Flagstar Financial (FLG) S-4/A 24 Jun 21 Registration of securities issued in business combination transactions (amended) Financial data

Cover Page

Cover Page	3 Months Ended
	Mar. 31, 2021
Document Information [Line Items]
Document Type	S-4/A
Amendment Flag	true
Entity Central Index Key	0000910073
Entity Registrant Name	NEW YORK COMMUNITY BANCORP INC
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Amendment Description	Amendment No. 1

Consolidated Statements of Cond

Consolidated Statements of Condition - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Assets:
Cash and cash equivalents		$ 2,722,915	$ 1,947,931		$ 741,870
Securities:
Debt securities available-for-sale		6,177,905	5,813,333		5,853,057
Equity investments with readily determinable fair values, at fair value		15,801	31,576		32,830
Total securities		6,193,706	5,844,909		5,885,887
Loans held for sale	[1]	141,435	117,136	[2]
Loans and leases held for investment, net of deferred loan fees and costs		43,125,139	42,883,598		41,894,155
Less: Allowance for credit losses on loans and leases		(197,758)	(194,043)		(147,638)
Total loans and leases held for investment, net		42,927,381	42,689,555		41,746,517
Total loans and leases held for investment and held for sale, net		43,068,816	42,806,691		41,746,517
Federal Home Loan Bank stock, at cost	[3]	698,984	714,005		647,562
Premises and equipment, net		282,407	287,447		312,626
Operating lease right-of-use assets		262,196	266,864		286,194
Goodwill		2,426,379	2,426,379		2,426,379
Bank-owned life insurance		1,165,765	1,164,196		1,145,058
Other real estate owned and other repossessed assets		8,153	8,318		12,268
Other assets		827,571	839,380		436,460
Total assets		57,656,892	56,306,120		53,640,821
Deposits:
Interest-bearing checking and money market accounts		12,665,002	12,610,073		10,230,144
Savings accounts		7,043,602	6,415,608		4,780,007
Certificates of deposit		9,614,298	10,330,680		14,214,858
Non-interest-bearing accounts		4,874,234	3,080,452		2,432,123
Total deposits		34,197,136	32,436,813		31,657,132
Wholesale borrowings:
Federal Home Loan Bank advances		14,302,661	14,627,661		13,102,661
Repurchase agreements		800,000	800,000		800,000
Total wholesale borrowings		15,102,661	15,427,661		13,902,661
Junior subordinated debentures		360,362	360,259		359,866
Subordinated notes		295,764	295,624		295,066
Total borrowed funds		15,758,787	16,083,544		14,557,593
Operating lease liabilities		262,169	266,846		285,991
Other liabilities		642,360	677,273		428,411
Total liabilities		50,860,452	49,464,476		46,929,127
Stockholders' equity:
Preferred stock		502,840	502,840		502,840
Common stock		4,904	4,904		4,904
Paid-in capital in excess of par		6,103,251	6,122,690		6,115,487
Retained earnings		552,566	494,229		342,023
Treasury stock		(245,005)	(257,541)		(220,717)
Accumulated other comprehensive loss, net of tax:
Net unrealized gain (loss) on securities available for sale, net of tax		(41,809)	66,880		25,440
Net unrealized loss on pension and post-retirement obligations, net of tax		(54,855)	(59,345)		(59,136)
Net unrealized (loss) gain on cash flow hedges, net of tax		(25,452)	(33,013)		853
Total accumulated other comprehensive loss, net of tax		(122,116)	(25,478)		(32,843)
Total stockholders' equity		6,796,440	6,841,644		6,711,694
Total liabilities and stockholders' equity		$ 57,656,892	$ 56,306,120		$ 53,640,821
[1]	Includes deferred loan origination fees of $3.8 million and $1.7 million at March 31, 2021 and December 31, 2020, respectively.
[2]	Includes deferred loan origination fees of $1.7 million.
[3]	Carrying value and estimated fair value are at cost.

Consolidated Statements of Co_2

Consolidated Statements of Condition (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Securities Available-for-sale, pledged	$ 1,242,310	$ 1,278,177	$ 1,372,238
Debt Securities, allowance for credit losses	$ 0	$ 0
Preferred stock, par	$ 0.01	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000	5,000,000
Preferred stock, Series A shares issued	515,000	515,000	515,000
Preferred stock, Series A shares outstanding	515,000	515,000	515,000
Common stock, par	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized	900,000,000	900,000,000	900,000,000
Common stock, shares issued	490,439,070	490,439,070	490,439,070
Common stock, shares outstanding	465,074,384	463,901,808	467,346,781
Treasury stock, shares	25,364,686	26,537,262	23,092,289
Net unrealized gain (loss) on securities available for sale, tax	$ 16,051	$ (25,072)	$ (9,424)
Net unrealized loss on pension and post-retirement obligations, tax	20,198	21,898	22,191
Cash flow hedges tax component	$ 9,658	$ 12,519	$ (333)

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest Income:
Loans and leases	$ 383,430	$ 391,911	$ 1,542,215	$ 1,553,004	$ 1,467,944
Securities and money market investments	39,678	49,131	165,778	252,156	221,729
Total interest income	423,108	441,042	1,707,993	1,805,160	1,689,673
Interest Expense:
Interest-bearing checking and money market accounts	8,652	28,564	56,939	174,347	167,972
Savings accounts	6,255	8,934	31,650	35,705	28,994
Certificates of deposit	18,471	79,555	217,413	320,234	182,383
Borrowed funds	72,071	79,522	301,849	317,474	279,329
Total interest expense	105,449	196,575	607,851	847,760	658,678
Net interest income	317,659	244,467	1,100,142	957,400	1,030,995
Provision for credit losses	3,569	20,601	62,228	7,105	18,256
Net interest income after provision for credit loan losses	314,090	223,866	1,037,914	950,295	1,012,739
Non-Interest Income:
Fee income	5,539	7,018	22,026	29,297	29,765
Bank-owned life insurance	6,890	7,389	31,750	28,363	28,252
Net gain (loss) on securities	(483)	534	1,265	7,725	(1,994)
Other	2,461	1,958	6,039	18,845	35,535
Total non-interest income	14,407	16,899	61,080	84,230	91,558
Operating expenses:
Compensation and benefits	78,026	79,451	300,914	301,697	317,496
Occupancy and equipment	21,481	17,875	85,887	89,174	100,107
General and administrative	32,894	28,196	124,389	120,347	129,025
Total non-interest expense	132,401	125,522	511,190	511,218	546,628
Income before income taxes	196,096	115,243	587,804	523,307	557,669
Income tax expense	50,500	14,915	76,695	128,264	135,252
Net income	145,596	100,328	511,109	395,043	422,417
Preferred stock dividends	8,207	8,207	32,828	32,828	32,828
Net income available to common shareholders	$ 137,389	$ 92,121	$ 478,281	$ 362,215	$ 389,589
Basic earnings per common share	$ 0.29	$ 0.20	$ 1.02	$ 0.77	$ 0.79
Diluted earnings per common share	$ 0.29	$ 0.20	$ 1.02	$ 0.77	$ 0.79
Net income	$ 145,596	$ 100,328	$ 511,109	$ 395,043	$ 422,417
Other comprehensive income (loss), net of tax:
Change in net unrealized gain (loss) on securities available for sale, net of tax	(108,689)	(12,157)	41,935	45,934	(50,553)
Change in pension and post-retirement obligations, net of tax	3,271	45	(5,359)	4,756	(27,113)
Change in net unrealized (loss) gain on cash flow hedges, net of tax	3,287	(35,888)	(42,397)	964
Less: Reclassification adjustment for sales of available-for-sale securities, net of tax		(543)	(495)	(3,918)	10
Reclassification adjustment for defined benefit pension plan, net of tax	1,219	1,288	5,150	7,185	5,170
Reclassification adjustment for net gain on cash flow hedges included in net income, net of tax	4,274	(467)	8,531	(111)
Total other comprehensive income (loss), net of tax	(96,638)	(47,722)	7,365	54,810	(72,486)
Total comprehensive income, net of tax	$ 48,958	$ 52,606	$ 518,474	$ 449,853	$ 349,931

Consolidated Statements of In_2

Consolidated Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Change in net unrealized gain (loss) on securities available for sale, tax	$ 41,123	$ 4,611	$ (15,836)	$ (17,669)	$ 31,345
Change in pension and post-retirement obligations, tax	(1,238)	(19)	1,660	(2,307)	(2,829)
Cash flow hedge, (loss) gain, reclassification, tax	(1,245)	13,397	16,088	(376)
Reclassification adjustment for sales of available-for-sale securities, tax	0	206	188	1,527	(4)
Reclassification adjustment for defined benefit pension plan, net of tax	(462)	(487)	(1,953)	(2,726)	$ (2,068)
Cash flow hedges tax component	$ (1,617)	$ 178	$ (3,236)	$ 43

Consolidated Statement of Chang

Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment		Adjusted Balance	Common Stock (Par Value: $0.01)	Preferred Stock (Par Value: $0.01)	Paid-in Capital in Excess of Par	Retained Earnings	Retained EarningsCumulative Effect, Period of Adoption, Adjustment		Retained EarningsAdjusted Balance	Treasury Stock, at Cost	Accumulated Other Comprehensive Loss, Net of Tax	Accumulated Other Comprehensive Loss, Net of TaxCumulative Effect, Period of Adoption, Adjustment
Balance at Dec. 31, 2017	$ 6,795,376				$ 4,891	$ 502,840	$ 6,072,559	$ 237,868				$ (7,615)	$ (15,167)
Balance (ASU No. 2016-01) at Dec. 31, 2017		$ 260							$ 260
Balance (ASU No. 2018-02) at Dec. 31, 2017									2,546					$ (2,546)
Balance, shares at Dec. 31, 2017					488,490,352
Shares issued for restricted stock, net of forfeitures					$ 13		(8,879)					8,866
Shares issued for restricted stock, net of forfeitures, shares					2,039,603
Compensation expense related to restricted stock awards	36,260						36,260
Net income	422,417							422,417
Dividends paid on common stock	(333,061)							(333,061)
Dividends paid on preferred stock	(32,828)							(32,828)
Purchase of common stock	(163,249)											(163,249)
Purchase of common stock, shares					(16,993,351)
Other comprehensive income (loss), net of tax	(69,940)												(69,940)
Balance at Dec. 31, 2018	6,655,235				$ 4,904	502,840	6,099,940	297,202				(161,998)	(87,653)
Balance, shares at Dec. 31, 2018					473,536,604
Shares issued for restricted stock, net of forfeitures							(16,501)					16,501
Shares issued for restricted stock, net of forfeitures, shares					1,665,028
Compensation expense related to restricted stock awards	32,048						32,048
Net income	395,043							395,043
Dividends paid on common stock	(317,394)							(317,394)
Dividends paid on preferred stock	(32,828)							(32,828)
Purchase of common stock	(75,220)											(75,220)
Purchase of common stock, shares					(7,854,851)
Other comprehensive income (loss), net of tax	54,810												54,810
Balance at Dec. 31, 2019	6,711,694	$ (10,468)	[1],[2]	$ 6,701,226	$ 4,904	502,840	6,115,487	342,023	$ (10,468)	[1],[2]	$ 331,555	(220,717)	(32,843)
Balance, shares at Dec. 31, 2019					467,346,781
Accounting Standards Update [Extensible List]		Accounting Standards Update 2016-13							Accounting Standards Update 2016-13
Shares issued for restricted stock, net of forfeitures							(22,198)					22,198
Shares issued for restricted stock, net of forfeitures, shares					2,321,105
Compensation expense related to restricted stock awards	8,251						8,251
Net income	100,328							100,328
Dividends paid on common stock	(79,332)							(79,332)
Dividends paid on preferred stock	(8,207)							(8,207)
Purchase of common stock	(37,159)											(37,159)
Purchase of common stock, shares					(3,307,183)
Other comprehensive income (loss), net of tax	(47,722)												(47,722)
Balance at Mar. 31, 2020	6,637,385				$ 4,904	502,840	6,101,540	344,344				(235,678)	(80,565)
Balance, shares at Mar. 31, 2020					466,360,703
Balance at Dec. 31, 2019	$ 6,711,694	$ (10,468)	[1],[2]	$ 6,701,226	$ 4,904	502,840	6,115,487	342,023	$ (10,468)	[1],[2]	$ 331,555	(220,717)	(32,843)
Balance, shares at Dec. 31, 2019					467,346,781
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13	Accounting Standards Update 2016-13
Shares issued for restricted stock, net of forfeitures							(22,198)					22,198
Shares issued for restricted stock, net of forfeitures, shares					2,321,105
Compensation expense related to restricted stock awards	$ 29,401						29,401
Net income	511,109							511,109
Dividends paid on common stock	(315,607)							(315,607)
Dividends paid on preferred stock	(32,828)							(32,828)
Purchase of common stock	(59,022)											(59,022)
Purchase of common stock, shares					(5,766,078)
Other comprehensive income (loss), net of tax	7,365												7,365
Balance at Dec. 31, 2020	$ 6,841,644				$ 4,904	502,840	6,122,690	494,229				(257,541)	(25,478)
Balance, shares at Dec. 31, 2020					463,901,808
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13
Shares issued for restricted stock, net of forfeitures							(28,051)					28,051
Shares issued for restricted stock, net of forfeitures, shares					2,515,942
Compensation expense related to restricted stock awards	$ 8,612						8,612
Net income	145,596							145,596
Dividends paid on common stock	(79,052)							(79,052)
Dividends paid on preferred stock	(8,207)							(8,207)
Purchase of common stock	(15,515)											(15,515)
Purchase of common stock, shares					(1,343,366)
Other comprehensive income (loss), net of tax	(96,638)												(96,638)
Balance at Mar. 31, 2021	$ 6,796,440				$ 4,904	$ 502,840	$ 6,103,251	$ 552,566				$ (245,005)	$ (122,116)
Balance, shares at Mar. 31, 2021					465,074,384
[1]	Amount represents a $10.5 million cumulative adjustment, net of tax, to retained earnings as of January 1, 2020, as a result of the adoption of ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which became effective January 1, 2020.
[2]	Amount represents a $10.5 million cumulative adjustment, net of tax, to retained earnings as of January 1, 2020, as a result of the adoption of ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which became effective January 1, 2020.

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Balance		$ 6,841,644	$ 6,711,694	$ 6,711,694	$ 6,655,235	$ 6,795,376
Accounting Standards Update [Extensible List]		Accounting Standards Update 2016-13		Accounting Standards Update 2016-13
Cumulative Effect, Period of Adoption, Adjustment
Balance	[1],[2]		$ (10,468)	$ (10,468)
Accounting Standards Update [Extensible List]			Accounting Standards Update 2016-13	Accounting Standards Update 2016-13
Common Stock (Par Value: $0.01)
Dividends paid on common stock, per share		$ 0.17	$ 0.17	$ 0.68	$ 0.68	$ 0.68
Balance		$ 4,904	$ 4,904	$ 4,904	$ 4,904	$ 4,891
Preferred Stock (Par Value: $0.01)
Dividends paid on preferred stock, per share		$ 15.94	$ 15.94	$ 63.76	$ 63.76	$ 63.76
Balance		$ 502,840	$ 502,840	$ 502,840	$ 502,840	$ 502,840
Retained Earnings
Balance		$ 494,229	342,023	342,023	$ 297,202	$ 237,868
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment
Balance	[1],[2]		$ (10,468)	$ (10,468)
Accounting Standards Update [Extensible List]			Accounting Standards Update 2016-13
[1]	Amount represents a $10.5 million cumulative adjustment, net of tax, to retained earnings as of January 1, 2020, as a result of the adoption of ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which became effective January 1, 2020.
[2]	Amount represents a $10.5 million cumulative adjustment, net of tax, to retained earnings as of January 1, 2020, as a result of the adoption of ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which became effective January 1, 2020.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2021		Mar. 31, 2020		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Cash Flows from Operating Activities:
Net income	$ 145,596		$ 100,328		$ 511,109		$ 395,043		$ 422,417
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	3,569		20,601		62,228		7,105		18,256
Depreciation	5,357		6,407		23,871		27,096		32,323
Amortization of discounts and premiums, net	1,344		6,384		11,123		7,951		(3,891)
Net loss (gain) on securities	483		(534)		(1,265)		(7,725)		14
Gain on trading activity	(94)		0		(23)		(66)		(222)
Net (gain) loss on sales of loans	(744)		4				75		(111)
Net gain on sales of fixed assets							(7,402)
Stock-based compensation	8,612		8,251		29,401		32,048		36,260
Deferred tax expense	31,279		44,465		219,342		100,813		23,197
Changes in operating assets and liabilities:
Decrease (increase) in other assets	7,891	[1]	(34,397)	[1]	(411,074)	[2]	(55,825)	[2]	29,952	[2]
Increase (decrease) in other liabilities	(28,007)	[3]	(20,813)	[3]	8,619	[4]	10,571	[4]	(53,320)	[4]
Purchases of securities held for trading	(60,000)		0		(15,000)		(42,500)		(141,615)
Proceeds from sales of securities held for trading	60,094		0		15,023		42,566		141,837
Held for sale originations	(51,766)		0		(119,158)
Proceeds from sales of loans originated for sale									35,258
Net cash provided by operating activities	123,614		130,696		334,196		509,750		540,355
Cash Flows from Investing Activities:
Proceeds from repayment of securities available for sale	495,342		428,098		2,061,756		1,962,433		817,822
Proceeds from sales of securities available for sale			369,972		483,872		361,311		278,539
Purchase of securities available for sale	(985,594)		(483,789)		(2,513,853)		(2,503,248)		(3,288,204)
Redemption of Federal Home Loan Bank stock	15,601		72,567		172,544		135,906		120,220
Purchases of Federal Home Loan Bank stock	(580)		(88,875)		(238,987)		(138,878)		(160,991)
Proceeds from (purchases of) bank-owned life insurance, net	7,182		1,772		12,296		(138,119)		16,303
Proceeds from sales of loans	32,929		3,124		3,128		115,205		195,760
Purchases of loans	(20,723)		(26,300)		(95,618)		(864,299)
Other changes in loans, net	(225,019)		(380,427)		(911,805)		(998,515)		(1,990,068)
Dispositions (purchases) of premises and equipment, net	(317)		(438)		1,308		9,297		(9,847)
Net cash used in investing activities	(681,179)		(104,296)		(1,025,359)		(2,058,907)		(4,020,466)
Cash Flows from Financing Activities:
Net increase in deposits	1,760,323		315,634		779,681		892,702		1,662,267
Net increase in short-term borrowed funds			1,350,000		1,150,000		1,100,000
Proceeds from long-term borrowed funds	325,000		2,150,000		6,925,000		4,785,812		5,667,268
Repayments of long-term borrowed funds	(650,000)		(3,125,000)		(6,550,000)		(5,537,000)		(4,373,500)
Cash dividends paid on common stock	(79,052)		(79,332)		(315,607)		(317,394)		(333,061)
Cash dividends paid on preferred stock	(8,207)		(8,207)		(32,828)		(32,828)		(32,828)
Treasury stock repurchased			(28,924)		(50,190)		(67,125)		(160,767)
Payments relating to treasury shares received for restricted stock award tax payments	(15,515)		(8,235)		(8,832)		(8,095)		(2,482)
Net cash provided by financing activities	1,332,549		565,936		1,897,224		816,072		2,426,897
Net increase (decrease) in cash, cash equivalents, and restricted cash	774,984		592,336		1,206,061		(733,085)		(1,053,214)
Cash, cash equivalents, and restricted cash at beginning of year	1,947,931		741,870		741,870		1,474,955		2,528,169
Cash, cash equivalents, and restricted cash at end of year	2,722,915		1,334,206		1,947,931		741,870		1,474,955
Supplemental information:
Cash paid for interest	113,189		202,459		632,660		813,161		645,588
Cash paid for income taxes	14,005		10,000		117,873		75,680		44,123
Non-cash investing and financing activities:
Transfers to repossessed assets from loans			120		578		4,689		5,631
Operating lease liabilities arising from obtaining right-of-use assets as of January 1, 2019							324,360
Securitization of residential mortgage loans to mortgage-backed securities available for sale	20,723		26,300		53,199		93,531
Transfer of loans from held for investment to held for sale	47,745		3,124				115,280		195,649
Disposition of premises and equipment							1,245
Shares issued for restricted stock awards	$ 28,051		$ 22,198		$ 22,198		$ 16,501		$ 8,879
[1]	Includes $4.7 million and $4.1 million of amortization of operating lease right-of-use assets for the three months ended March 31, 2021 and 2020, respectively.
[2]	Includes $20.0 million and $38.4 million of net amortization of operating lease right-of-use assets for the twelve months ended December 31, 2020 and December 31, 2019, respectively.
[3]	Includes $4.7 million and $4.1 million of amortization of operating lease liability for the three months ended March 31, 2021 and 2020, respectively.
[4]	Includes $20.0 million and $38.4 million of net amortization of operating lease liability for the twelve months ended December 31, 2020 and December 31, 2019, respectively.

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Statement Of Cash Flows [Abstract]
Amortization of operating lease right-of-use assets	$ 4.7	$ 4.1	$ 20	$ 38.4
Amortization of operating lease liability	$ 4.7	$ 4.1	$ 20	$ 38.4

Organization, Basis of Presenta

Organization, Basis of Presentation, and Impact of Recent Accounting Pronouncements	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Organization, Basis of Presentation, and Impact of Recent Accounting Pronouncements	Note 1. Organization, Basis of Presentation, and Impact of Recent Accounting Pronouncements Organization New York Community Bancorp, Inc. (on a stand-alone basis, the “Parent Company” or, collectively with its subsidiaries, the “Company”) was organized under Delaware law on July 20, 1993 and is the holding company for New York Community Bank (hereinafter referred to as the “Bank”). Founded on April 14, 1859 and formerly known as Queens County Savings Bank, the Bank converted from a state-chartered mutual savings bank to the capital stock form of ownership on November 23, 1993, at which date the Company issued its initial offering of common stock (par value: $0.01 per share) at a price of $25.00 per share ($0.93 per share on a split-adjusted basis, reflecting the impact of nine stock splits between 1994 and 2004). The Bank currently operates 237 branches, 19 of which operate directly under the Community Bank name. The remaining 218 Community Bank branches operate through eight divisional banks: Queens County Savings Bank, Roslyn Savings Bank, Richmond County Savings Bank, Roosevelt Savings Bank, and Atlantic Bank in New York; Garden State Community Bank in New Jersey; AmTrust Bank in Florida and Arizona; and Ohio Savings Bank in Ohio. Basis of Presentation The following is a description of the significant accounting and reporting policies that the Company and its subsidiaries follow in preparing and presenting their consolidated financial statements, which conform to U.S. generally accepted accounting principles (“GAAP”) and to general practices within the banking industry. The preparation of financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Estimates that are particularly susceptible to change in the near term are used in connection with the determination of the allowance for credit losses and the evaluation of goodwill for impairment. The accompanying consolidated financial statements include the accounts of the Company and other entities in which the Company has a controlling financial interest. All inter-company accounts and transactions are eliminated in consolidation. The Company currently has certain unconsolidated subsidiaries in the form of wholly-owned statutory business trusts, which were formed to issue guaranteed capital securities. See Note 7, Borrowed Funds, for additional information regarding these trusts. When necessary, certain reclassifications have been made to prior-year amounts to conform to the current-year presentation. Impact of Recent Accounting Pronouncements Recently Adopted Accounting Standards The Company adopted ASU No. 2020-04 The Company adopted ASU No. 2016-13, No. 2016-13”) No. 2016-13 available-for-sale No. 2016-13 and, instead, requires an entity to reflect its current estimate of all expected credit losses. The amendments in ASU No. 2016-13 available-for-sale off-balance The Company adopted ASU No. 2016-13 No. 2016-13. The Company adopted, on a prospective basis, ASU No. 2017-04, No. 2017-04 No. 2017-04 The adoption of ASU No. 2017-04 COVID-19 more-likely-than-not	NOTE 1: ORGANIZATION AND BASIS OF PRESENTATION Organization New York Community Bancorp, Inc. (on a stand-alone basis, the “Parent Company” or, collectively with its subsidiaries, the “Company”) was organized under Delaware law on July 20, 1993 and is the holding company for New York Community Bank (hereinafter referred to as the “Bank”). Founded on April 14, 1859 and formerly known as Queens County Savings Bank, the Bank converted from a state-chartered mutual savings bank to the capital stock form of ownership on November 23, 1993, at which date the Company issued its initial offering of common stock (par value: $0.01 per share) at a price of $25.00 per share ($0.93 per share on a split-adjusted basis, reflecting the impact of nine stock splits between 1994 and 2004). The Company currently operates 237 branches through eight local divisions, each with a history of service and strength: Queens County Savings Bank, Roslyn Savings Bank, Richmond County Savings Bank, Roosevelt Savings Bank, and Atlantic Bank in New York; Garden State Community Bank in New Jersey; Ohio Savings Bank in Ohio; and AmTrust Bank in Arizona and Florida. Basis of Presentation The following is a description of the significant accounting and reporting policies that the Company and its subsidiaries follow in preparing and presenting their consolidated financial statements, which conform to U.S. generally accepted accounting principles (“GAAP”) and to general practices within the banking industry. The preparation of financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Estimates that are used in connection with the determination of the allowance for loan and lease losses and the evaluation of goodwill for impairment, The accompanying consolidated financial statements include the accounts of the Company and other entities in which the Company has a controlling financial interest. All inter-company accounts and transactions are eliminated in consolidation. The Company currently has certain unconsolidated subsidiaries in the form of wholly-owned statutory business trusts, which were formed to issue guaranteed capital securities. See Note 9, “Borrowed Funds,” for additional information regarding these trusts. When necessary, certain reclassifications have been made to prior-year amounts to conform to the current-year presentation.

Computation of Earnings per Com

Computation of Earnings per Common Share	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Computation of Earnings per Common Share	Note 2. Computation of Earnings per Common Share Basic EPS is computed by dividing the net income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted EPS is computed using the same method as basic EPS, however, the computation reflects the potential dilution that would occur if outstanding in-the-money Unvested stock-based compensation awards containing non-forfeitable two-class two-class non-forfeitable, awards are considered participating securities and therefore have earnings allocated to them. The following table presents the Company’s computation of basic and diluted EPS for the periods indicated:​​​​​​​ For the Three Months Ended (in thousands, except share and per share amounts) 2021 2020 Net income available to common shareholders $ 137,389 $ 92,121 Less: Dividends paid on and earnings allocated to participating securities (1,795 ) (1,170 ) Earnings applicable to common stock $ 135,594 $ 90,951 Weighted average common shares outstanding 463,292,906 464,993,970 Basic earnings per common share $ 0.29 $ 0.20 Earnings applicable to common stock $ 135,594 $ 90,951 Weighted average common shares outstanding 463,292,906 464,993,970 Potential dilutive common shares 594,031 418,674 Total shares for diluted earnings per common share computation 463,886,937 465,412,644 Diluted earnings per common share and common share equivalents $ 0.29 $ 0.20

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	NOTE 2: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Cash and Cash Equivalents For cash flow reporting purposes, cash and cash equivalents include cash on hand, amounts due from banks, and money market investments, which include federal funds sold and reverse repurchase agreements. At December 31, 2020 and 2019, the Company’s cash and cash equivalents totaled $1.9 billion and $741.9 million, respectively. Included in cash and cash equivalents at those dates were $1.6 billion and $608.4 million, respectively, of interest-bearing deposits in other financial institutions, primarily consisting of balances due from the FRB-NY. Debt Securities and Equity Investments with Readily Determinable Fair Values The securities portfolio primarily consists of mortgage-related securities and, to a lesser extent, debt and equity securities. Securities that are classified as “available for sale” are carried at their estimated fair value, with any unrealized gains or losses, net of taxes, reported as accumulated other comprehensive income or loss in stockholders’ equity. Securities that the Company has the intent and ability to hold to maturity are classified as “held to maturity” and carried at amortized cost. The fair values of our securities—and particularly our fixed-rate securities—are affected by changes in market interest rates and credit spreads. In general, as interest rates rise and/or credit spreads widen, the fair value of fixed-rate securities will decline. As interest rates fall and/or credit spreads tighten, the fair value of fixed-rate securities will rise. The Company evaluates available-for-sale available-for-sale The Company first assess whether (i) it intends to sell, or (ii) it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis. If either of these criteria is met, any previously recognized allowances are charged off and the security’s amortized cost basis is written down to fair value through income. If neither of the aforementioned criteria are met, the Company evaluates whether the decline in fair value has resulted from credit losses or other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Management has made the accounting policy election to exclude accrued interest receivable on available-for-sale Available-for-sale non-accrual non-accrual Equity investments with readily determinable fair values are measured at fair value with changes in fair value recognized in net income. Premiums and discounts on securities are amortized to expense and accreted to income over the remaining period to contractual maturity using a method that approximates the interest method, and are adjusted for anticipated prepayments. Dividend and interest income are recognized when earned. The cost of securities sold is based on the specific identification method. Federal Home Loan Bank Stock As a member of the FHLB-NY, FHLB-NY FHLB-NY. The Company conducts a periodic review and evaluation of its FHLB-NY FHLB-NY FHLB-NY Loans Loans, net, are carried at unpaid principal balances, including unearned discounts, purchase accounting (i.e., acquisition-date fair value) adjustments, net deferred loan origination costs or fees, and the allowance for credit losses on loans. The Company recognizes interest income on loans using the interest method over the life of the loan. Accordingly, the Company defers certain loan origination and commitment fees, and certain loan origination costs, and amortizes the net fee or cost as an adjustment to the loan yield over the term of the related loan. When a loan is sold or repaid, the remaining net unamortized fee or cost is recognized in interest income. Prepayment income on loans is recorded in interest income and only when cash is received. Accordingly, there are no assumptions involved in the recognition of prepayment income. Two factors are considered in determining the amount of prepayment income: the prepayment penalty percentage set forth in the loan documents, and the principal balance of the loan at the time of prepayment. The volume of loans prepaying may vary from one period to another, often in connection with actual or perceived changes in the direction of market interest rates. When interest rates are declining, rising precipitously, or perceived to be on the verge of rising, prepayment income may increase as more borrowers opt to refinance and lock in current rates prior to further increases taking place. A loan generally is classified as a “non-accrual” non-accrual non-accrual Allowance for Credit Losses on Loans and Leases The Company’s January 1, 2020, adoption of ASU No. 2016-13, No. 2016-13 off-balance The allowance for credit losses on loans and leases is deducted from the amortized cost basis of a financial asset or a group of financial assets so that the balance sheet reflects the net amount the Company expects to collect. Amortized cost is the unpaid loan balance, net of deferred fees and expenses, and includes negative escrow. Subsequent changes (favorable and unfavorable) in expected credit losses are recognized immediately in net income as a credit loss expense or a reversal of credit loss expense. Management estimates the allowance by projecting and multiplying together the probability-of-default, exposure-at-default The allowance for credit losses on loans and leases is measured on a collective (pool) basis when similar risk characteristics exist. The portfolio segment represents the level at which a systematic methodology is applied to estimate credit losses. Management believes the products within each of the entity’s portfolio segments exhibit similar risk characteristics. Smaller pools of homogenous financing receivables with homogeneous risk characteristics were modeled using the methodology selected for the portfolio segment. The macroeconomic data used in the quantitative models are based on a reasonable and supportable forecast period of 24 months. The Company leverages economic projections including property market and prepayment forecasts from established independent third parties to inform its loss drivers in the forecast. Beyond this forecast period, the Company reverts to a historical average loss rate. This reversion to the historical average loss rate is performed on a straight-line basis over 12 months. Loans that do not share risk characteristics are evaluated on an individual basis. These include loans that are in nonaccrual status with balances above management determined materiality thresholds depending on loan class and also loans that are designated as TDR or “reasonably expected TDR” (criticized, classified, or maturing loans that will have a modification processed within the next three months). In addition, all taxi medallion loans are individually evaluated. If a loan is determined to be collateral dependent, or meets the criteria to apply the collateral dependent practical expedient, expected credit losses are determined based on the fair value of the collateral at the reporting date, less costs to sell as appropriate. The Company maintains an allowance for credit losses on off-balance off-balance fund-up fund-up fund-up Allowance for Loan and Lease Losses - 2019 At December 31, 2019, the methodology used for the allocation of the allowance for loan and lease losses the Bank segregated their loss factors (used for both criticized and non-criticized The allowance for loan and lease losses is established based on management’s evaluation of incurred losses in the portfolio in accordance with GAAP, and is comprised of both specific valuation allowances and a general valuation allowance. Specific valuation allowances are established based on management’s analyses of individual loans that are considered impaired. If a loan is deemed to be impaired, management measures the extent of the impairment and establishes a specific valuation allowance for that amount. A loan is classified as impaired when, based on current information and/or events, it is probable that the Company will be unable to collect all amounts due under the contractual terms of the loan agreement. The Company applies this classification as necessary to loans individually evaluated for impairment in our portfolios. Smaller-balance homogenous loans and loans carried at the lower of cost or fair value are evaluated for impairment on a collective, rather than individual, basis. Loans to certain borrowers who have experienced financial difficulty and for which the terms have been modified, resulting in a concession, are considered TDRs and are classified as impaired. The Company primarily measures impairment on an individual loan and determine the extent to which a specific valuation allowance is necessary by comparing the loan’s outstanding balance to either the fair value of the collateral, less the estimated cost to sell, or the present value of expected cash flows, discounted at the loan’s effective interest rate. Generally, when the fair value of the collateral, net of the estimated cost to sell, or the present value of the expected cash flows is less than the recorded investment in the loan, any shortfall is promptly charged off. The Company also follows a process to assign the general valuation allowance to loan categories. The general valuation allowance is established by applying our loan loss provisioning methodology, and reflect the inherent risk in outstanding held-for-investment charge-off The allocation methodology consists of the following components: First, the Company determines an allowance for loan and lease losses based on a quantitative loss factor for loans evaluated collectively for impairment. This quantitative loss factor is based primarily on historical loss rates, after considering loan type, historical loss and delinquency experience, and loss emergence periods. The quantitative loss factors applied in the methodology are periodically re-evaluated • Changes in lending policies and procedures, including changes in underwriting standards and collection, and charge-off • Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments; • Changes in the nature and volume of the portfolio and in the terms of loans; • Changes in the volume and severity of past-due non-accrual • Changes in the quality of our loan review system; • Changes in the value of the underlying collateral for collateral-dependent loans; • The existence and effect of any concentrations of credit, and changes in the level of such concentrations; • Changes in the experience, ability, and depth of lending management and other relevant staff; and • The effect of other external factors, such as competition and legal and regulatory requirements, on the level of estimated credit losses in the existing portfolio. By considering the factors discussed above, the Company determined an allowance for loan and lease losses that is applied to each significant loan portfolio segment to determine the total allowance for loan and lease losses. The historical loss period the Company uses to determine the allowance for loan and lease losses on loans is a rolling 36-quarter The process of establishing the allowance for losses on loans also involves: • Periodic inspections of the loan collateral by qualified in-house • Regular meetings of executive management with the pertinent Board committees, during which observable trends in the local economy and/or the real estate market are discussed; • Assessment of the aforementioned factors by the pertinent members of the Board of Directors and management when making a business judgment regarding the impact of anticipated changes on the future level of loan losses; and • Analysis of the portfolio in the aggregate, as well as on an individual loan basis, taking into consideration payment history, underwriting analyses, and internal risk ratings. In order to determine their overall adequacy, the loan loss allowance is reviewed quarterly by management Board Committees and the Board of Directors of the Bank, as applicable. An allowance for unfunded commitments is maintained separate from the allowance for loan and lease losses and is included in Other liabilities in the Consolidated Statements of Condition. Goodwill The Company adopted, on a prospective basis, ASU No. 2017-04, assets acquired and liabilities assumed are recorded at their estimated fair values. Goodwill represents the excess of the purchase price of its acquisitions over the fair value of identifiable net assets acquired, including other identified intangible assets. The Company tests goodwill for impairment at the reporting unit level. The Company has identified one reporting unit which is the same as its operating segment and reportable segment. If the Company changes its strategy or if market conditions shift, its judgments may change, which may result in adjustments to the recorded goodwill balance. The Company performs its goodwill impairment test in the fourth quarter of each year, or more often if events or circumstances warrant. For annual goodwill impairment testing, the Company has the option to first perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill and other intangible assets. If the Company concludes that this is the case, it would compare the fair value the reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. The loss recognized, however, would not exceed the total amount of goodwill allocated to that reporting unit. Additionally, the Company would consider income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. As of December 31, 2020, the Company’s goodwill was not impaired. Premises and Equipment, Net Premises, furniture, fixtures, and equipment are carried at cost, less the accumulated depreciation computed on a straight-line basis over the estimated useful lives of the respective assets (generally 20 years for premises and three Depreciation is included in “Occupancy and equipment expense” in the Consolidated Statements of Income and Comprehensive Income, and amounted to $23.9 million, $27.1 million, and $32.3 million, respectively, in the years ended December 31, 2020, 2019, and 2018. Bank-Owned Life Insurance The Company has purchased life insurance policies on certain employees. These BOLI policies are recorded in the Consolidated Statements of Condition at their cash surrender value. Income from these policies and changes in the cash surrender value are recorded in “Non-interest Repossessed Assets and OREO Repossessed assets consist of any property or other assets acquired through, or in lieu of, foreclosure are sold or rented, and are recorded at fair value, less the estimated selling costs, at the date of acquisition. Following foreclosure, management periodically performs a valuation of the asset, and the assets are carried at the lower of the carrying amount or fair value, less the estimated selling costs. Expenses and revenues from operations and changes in valuation, if any, are included in “General and administrative expense” in the Consolidated Statements of Income and Comprehensive Income. At December 31, 2020, the Company had $1.8 million of OREO and $6.5 million of taxi medallions. At December 31, 2019, the Company had $2.0 million of OREO and $10.3 million of taxi medallions. Income Taxes Income tax expense consists of income taxes that are currently payable and deferred income taxes. Deferred income tax expense is determined by recognizing deferred tax assets and liabilities for future tax consequences attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates that are expected to apply to taxable income in years in which those temporary differences are expected to be recovered or settled. The Company assesses the deferred tax assets and establishes a valuation allowance when realization of a deferred asset is not considered to be “more likely than not.” The Company considers its expectation of future taxable income in evaluating the need for a valuation allowance. The Company estimates income taxes payable based on the amount it expects to owe the various tax authorities (i.e., federal, state, and local). Income taxes represent the net estimated amount due to, or to be received from, such tax authorities. In estimating income taxes, management assesses the relative merits and risks of the appropriate tax treatment of transactions, taking into account statutory, judicial, and regulatory guidance in the context of the Company’s tax position. In this process, management also relies on tax opinions, recent audits, and historical experience. Although the Company uses the best available information to record income taxes, underlying estimates and assumptions can change over time as a result of unanticipated events or circumstances such as changes in tax laws and judicial guidance influencing its overall tax position.​​​​​​​ Derivative Instruments and Hedging Activities The Company records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge. The Company may enter into derivative contracts that are intended to economically hedge certain of its risks, even though hedge accounting does not apply or the Company elects not to apply hedge accounting. Stock-Based Compensation Under the New York Community Bancorp, Inc. 2020 Omnibus Incentive Plan (the “2020 Incentive Plan”), which was approved by the Company’s shareholders at its Annual Meeting on June 3, 2020, shares are available for grant as restricted stock or other forms of related rights. At December 31, 2020, the Company had 11,913,461 shares available for grant under the 2020 Incentive Plan. Compensation cost related to restricted stock grants is recognized on a straight-line basis over the vesting period. For a more detailed discussion of the Company’s stock-based compensation, see Note 15, “Stock-Related Benefit Plans.” Retirement Plans The Company’s pension benefit obligations and post-retirement health and welfare benefit obligations, and the related costs, are calculated using actuarial concepts in accordance with GAAP. The measurement of such obligations and expenses requires that certain assumptions be made regarding several factors, most notably including the discount rate and the expected rate of return on plan assets. The Company evaluates these assumptions on an annual basis. Other factors considered by the Company in its evaluation include retirement patterns, mortality rates, turnover, and the rate of compensation increase. Under GAAP, actuarial gains and losses, prior service costs or credits, and any remaining transition assets or obligations that have not been recognized under previous accounting standards must be recognized in AOCL until they are amortized as a component of net periodic benefit cost. Earnings per Common Share (Basic and Diluted) Basic EPS is computed by dividing the net income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted EPS is computed using the same method as basic EPS, however, the computation reflects the potential dilution that would occur if outstanding in-the-money Unvested stock-based compensation awards containing non-forfeitable two-class two-class securities based on their respective rights to receive dividends on the common stock. The Company grants restricted stock to certain employees under its stock-based compensation plan. Recipients receive cash dividends during the vesting periods of these awards, including on the unvested portion of such awards. Since these dividends are non-forfeitable, The following table presents the Company’s computation of basic and diluted earnings per common share for the years ended December 31, 2020, 2019, and 2018: Years Ended December 31, (in thousands, except share and per share amounts) 2020 2019 2018 Net income available to common shareholders $ 478,281 $ 362,215 $ 389,589 Less: Dividends paid on and earnings allocated to participating securities (5,798 ) (4,333 ) (4,871 ) Earnings applicable to common stock $ 472,483 $ 357,882 $ 384,718 Weighted average common shares outstanding 462,605,341 465,380,010 487,287,872 Basic earnings per common share $ 1.02 $ 0.77 $ 0.79 Earnings applicable to common stock $ 472,483 $ 357,882 $ 384,718 Weighted average common shares outstanding 462,605,341 465,380,010 487,287,872 Potential dilutive common shares 676,061 283,322 — Total shares for diluted earnings per common share computation 463,281,402 465,663,332 487,287,872 Diluted earnings per common share and common share equivalents $ 1.02 $ 0.77 $ 0.79 Impact of Recent Accounting Pronouncements Recently Adopted Accounting Standards The Company adopted ASU No. 2020-04 The Company adopted ASU No. 2016-13, No. 2016-13”) No. 2016-13 available-for-sale No. 2016-13 No. 2016-13 available-for-sale off-balance The Company adopted ASU No. 2016-13 No. 2016-13. comprehensive income (loss) as of the date of adoption that relate to improvements in cash flows expected to be collected continue to be accreted into income over the remaining life of the asset. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption are recorded in earnings when received. The Company adopted ASU No. 2018-13, No. 2018-13 No. 2018-13 The Company adopted, on a prospective basis, ASU No. 2017-04, No. 2017-04 No. 2017-04 The adoption of ASU No. 2017-04 COVID-19 more-likely-than-not

Reclassifications Out of Accumu

Reclassifications Out of Accumulated Other Comprehensive Loss	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Reclassifications Of Accumulated Other Comprehensive Loss [Abstract]
Reclassifications Out of Accumulated Other Comprehensive Loss	Note 3: Reclassifications out of Accumulated Other Comprehensive Loss (in thousands) For the Three Months Ended March 31, 2021 Details about Accumulated Other Comprehensive Loss Amount (1) Affected Line Item in the Unrealized gains (losses) on available-for-sale $ — Net gain (losses) on securities — Income tax expense $ — Net gain (losses) on securities, net of tax Unrealized loss on cash flow hedges: $ (5,891 ) Interest expense 1,617 Income tax benefit $ (4,274 ) Net loss on cash flow hedges, net of tax Amortization of defined benefit pension plan items: Past service liability $ 62 Included in the computation of net periodic credit (2) Actuarial losses (1,743 ) Included in the computation of net periodic cost (2) (1,681 ) Total before tax 462 Income tax benefit $ (1,219 ) Amortization of defined benefit pension plan items, net of tax Total reclassifications for the period $ (5,493 ) (1) Amounts in parentheses indicate expense items. (2) See Note 8, “Pension and Other Post-Retirement Benefits,” for additional information.	NOTE 3: RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE LOSS (in thousands) For the Twelve Months Ended December 31, 2020 Details about Amount (1) Affected Line Item in the Unrealized gains on available-for-sale $ 683 Net gain on securities (188 ) Income tax expense $ 495 Net gain on securities, net of tax Unrealized gains on cash flow hedges: $ (11,767 ) Interest expense 3,236 Income tax benefit $ (8,531 ) Net gain on cash flow hedges, net of tax Amortization of defined benefit pension plan items: Past service liability $ 249 Included in the computation of net (2) Actuarial losses (7,352 ) Included in the computation of net (2) (7,103 ) Total before tax 1,953 Income tax benefit $ (5,150 ) Amortization of defined benefit pension Total reclassifications for the period $ (13,186 ) (1) Amounts in parentheses indicate expense items. (2) See Note 14, “Employee Benefits,” for additional information.

Securities

Securities	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Securities	Note 4. Securities The following tables summarize the Company’s portfolio of debt securities available for sale and equity investments with readily determinable fair values at March 31, 2021 and December 31, 2020: March 31, 2021 (in thousands) Amortized Gross Gross Fair Value Debt securities available-for-sale Mortgage-Related Debt Securities: GSE certificates $ 1,183,746 $ 40,473 $ 14,901 $ 1,209,318 GSE CMOs 2,007,855 28,837 50,422 1,986,270 Total mortgage-related debt securities $ 3,191,601 $ 69,310 $ 65,323 $ 3,195,588 Other Debt Securities: U. S. Treasury obligations $ 64,993 $ 5 $ — $ 64,998 GSE debentures 1,433,280 2,693 67,632 1,368,341 Asset-backed securities (1) 520,111 4,030 3,368 520,773 Municipal bonds 25,715 482 186 26,011 Corporate bonds 870,886 16,594 5,410 882,070 Foreign notes 25,000 993 — 25,993 Capital trust notes 95,621 6,823 8,313 94,131 Total other debt securities $ 3,035,606 $ 31,620 $ 84,909 $ 2,982,317 Total debt securities available for sale $ 6,227,207 $ 100,930 $ 150,232 $ 6,177,905 Equity Securities: Mutual funds 15,814 116 129 15,801 Total equity securities $ 15,814 $ 116 $ 129 $ 15,801 Total securities (2) $ 6,243,021 $ 101,046 $ 150,361 $ 6,193,706 (1) The underlying assets of the asset-backed securities are substantially guaranteed by the U.S. Government. (2) Excludes accrued interest receivable of $14.8 million included in other assets in the Consolidated Statements of Condition. December 31, 2020 (in thousands) Amortized Gross Gross Fair Value Debt securities available-for-sale Mortgage-Related Debt Securities: GSE certificates $ 1,155,436 $ 54,310 $ 136 $ 1,209,610 GSE CMOs 1,786,896 44,691 2,872 1,828,715 Total mortgage-related debt securities $ 2,942,332 $ 99,001 $ 3,008 $ 3,038,325 Other Debt Securities: U.S. Treasury obligations $ 64,984 $ 1 $ — $ 64,985 GSE debentures 1,158,253 3,998 3,949 1,158,302 Asset-backed securities (1) 530,226 2,576 5,703 527,099 Municipal bonds 25,776 625 90 26,311 Corporate bonds 870,745 17,928 6,447 882,226 Foreign notes 25,000 538 — 25,538 Capital trust notes 95,507 5,540 10,500 90,547 Total other debt securities $ 2,770,491 $ 31,206 $ 26,689 $ 2,775,008 Total other securities available for sale $ 5,712,823 $ 130,207 $ 29,697 $ 5,813,333 Equity Securities: Preferred stock $ 15,292 $ 201 $ — $ 15,493 Mutual funds 15,814 269 — 16,083 Total equity securities $ 31,106 $ 470 $ — $ 31,576 Total securities (2) $ 5,743,929 $ 130,677 $ 29,697 $ 5,844,909 (1) The underlying assets of the asset-backed securities are substantially guaranteed by the U.S. Government. (2) Excludes accrued interest receivable of $14.9 million included in other assets in the Consolidated Statements of Condition. At March 31, 2021 and December 31, 2020, respectively, the Company had $699.0 million and $714.0 million of FHLB-NY FHLB-NY The following table summarizes the gross proceeds, gross realized gains, and gross realized losses from the sale of available-for-sale For the Three (in thousands) 2021 2020 Gross proceeds — $ 369,972 Gross realized gains — 1,811 Gross realized losses — 1,062 Net losses on equity securities recognized in earnings for the three months ended March 31, 2021 and 2020 were $483,000 and $215,000, respectively. The following table summarizes, by contractual maturity, the amortized cost of securities at March 31, 2021: (dollars in thousands) Mortgage- Average U.S. Average State, Average (1) Other Debt (2) Average Fair Available-for-Sale Due within one year $ 23,017 3.76 % $ 75,943 0.54 % $ — — % $ 49,817 3.01 % $ 149,348 Due from one to five years 361,118 3.18 21,924 3.52 — — 223,181 1.87 637,035 Due from five to ten years 175,554 2.48 238,052 2.16 19,840 3.51 706,390 2.03 1,146,853 Due after ten years 2,631,912 1.98 1,162,354 1.53 5,875 3.33 532,230 1.25 4,244,669 Total debt securities available for sale $ 3,191,601 2.16 % $ 1,498,273 1.61 % $ 25,715 3.47 % $ 1,511,618 1.76 % $ 6,177,905 (1) Not presented on a tax-equivalent (2) Includes corporate bonds, capital trust notes, and asset-backed securities. The following table presents securities with no related allowance having a continuous unrealized loss position for less than twelve months and for twelve months or longer as of March 31, 2021: Less than Twelve Months Twelve Months or Total (in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Temporarily Impaired Securities: GSE certificates $ 323,281 $ 14,901 $ — $ — $ 323,281 $ 14,901 GSE CMOs 918,257 50,422 — — 918,257 50,422 GSE debentures 1,244,721 67,633 — — 1,244,721 67,633 Asset-backed securities 112,149 405 179,063 2,962 291,212 3,367 Municipal bonds — — 8,744 186 8,744 186 Corporate bonds — — 319,590 5,410 319,590 5,410 Capital trust notes — — 35,601 8,313 35,601 8,313 Equity securities 11,676 129 — — 11,676 129 Total temporarily impaired securities $ 2,610,084 $ 133,490 $ 542,998 $ 16,871 $ 3,153,082 $ 150,361 The following table presents securities having a continuous unrealized loss position for less than twelve months and for twelve months or longer as of December 31, 2020: Less than Twelve Months Twelve Months or Total (in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Temporarily Impaired Securities: U. S. Treasury obligations $ — $ — $ — $ — $ — $ — U. S. Government agency and GSE obligations 58,876 136 — — 58,876 136 GSE certificates 442,207 2,807 73,568 65 515,775 2,872 GSE CMOs 522,441 3,949 — — 522,441 3,949 Asset-backed securities — — 363,618 5,703 363,618 5,703 Municipal bonds — — 8,891 90 8,891 90 Corporate bonds 72,024 2,976 246,528 3,471 318,552 6,447 Foreign notes — — — — — — Capital trust notes — — 33,393 10,500 33,393 10,500 Equity securities — — — — — — Total temporarily impaired securities $ 1,095,548 $ 9,868 $ 725,998 $ 19,829 $ 1,821,546 $ 29,697 The investment securities designated as having a continuous loss position for twelve months or more at March 31, 2021 consisted of five capital trusts notes, five asset-backed securities, five corporate bonds, and one municipal bond. The investment securities designated as having a continuous loss position for twelve months or more at December 31, 2020 consisted of four agency collateralized mortgage obligations, five capital trusts notes, seven asset-backed securities, three corporate bonds, and one municipal bond. The Company evaluates available-for-sale available-for-sale We first assess whether (i) we intend to sell, or (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis. If either of these criteria is met, any previously recognized allowances are charged off and the security’s amortized cost basis is written down to fair value through income. If neither of the aforementioned criteria is met, we evaluate whether the decline in fair value has resulted from credit losses or other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. None of the unrealized losses identified as of March 31, 2021 or December 31, 2020 relates to the marketability of the securities or the issuers’ ability to honor redemption obligations. Rather, the unrealized losses relate to changes in interest rates relative to when the investment securities were purchased, and do not indicate credit-related impairment. Management based this conclusion on an analysis of each issuer including a detailed credit assessment of each issuer. The Company does not intend to sell, and it is not more likely than not that the Company will be required to sell the positions before the recovery of their amortized cost basis, which may be at maturity. As such, no allowance for credit losses was recorded with respect to debt securities as of or during the three months ended March 31, 2021. Management has made the accounting policy election to exclude accrued interest receivable on available-for-sale Available-for-sale non-accrual non-accrual	NOTE 4: SECURITIES The following tables summarize the Company’s portfolio of debt securities available for sale and equity investments with readily determinable fair values at December 31, 2020 and 2019: December 31, 2020 (in thousands) Amortized Gross Gross Fair Value Debt securities available-for-sale Mortgage-Related Debt Securities: GSE certificates $ 1,155,436 $ 54,310 $ 136 $ 1,209,610 GSE CMOs 1,786,896 44,691 2,872 1,828,715 Total mortgage-related debt securities $ 2,942,332 $ 99,001 $ 3,008 $ 3,038,325 Other Debt Securities: U. S. Treasury obligations $ 64,984 $ 1 $ — $ 64,985 GSE debentures 1,158,253 3,998 3,949 1,158,302 Asset-backed securities (1) 530,226 2,576 5,703 527,099 Municipal bonds 25,776 625 90 26,311 Corporate bonds 870,745 17,928 6,447 882,226 Foreign notes 25,000 538 — 25,538 Capital trust notes 95,507 5,540 10,500 90,547 Total other debt securities $ 2,770,491 $ 31,206 $ 26,689 $ 2,775,008 Total debt securities available for sale $ 5,712,823 $ 130,207 $ 29,697 $ 5,813,333 Equity securities: Preferred stock 15,292 201 — 15,493 Mutual funds 15,814 269 — 16,083 Total equity securities $ 31,106 $ 470 $ — $ 31,576 Total securities (2) $ 5,743,929 $ 130,677 $ 29,697 $ 5,844,909 (1) The underlying assets of the asset-backed securities are substantially guaranteed by the U.S. Government.. (2) Excludes accrued interest receivable of $14.9 million included in other assets in the Consolidated Statements of Condition. December 31, 2019 (in thousands) Amortized Gross Gross Fair Debt securities available-for-sale Mortgage-Related Debt Securities: GSE certificates $ 1,530,317 $ 26,069 $ 3,763 $ 1,552,623 GSE CMOs 1,783,440 21,213 3,541 1,801,112 Total mortgage-related debt securities $ 3,313,757 $ 47,282 $ 7,304 $ 3,353,735 Other Debt Securities: U. S. Treasury obligations $ 41,820 $ 19 $ — $ 41,839 GSE debentures 1,093,845 5,707 5,312 1,094,240 Asset-backed securities (1) 384,108 — 10,854 373,254 Municipal bonds 26,808 559 475 26,892 Corporate bonds 854,195 15,970 2,983 867,182 Capital trust notes 95,100 7,121 6,306 95,915 Total other debt securities $ 2,495,876 $ 29,376 $ 25,930 $ 2,499,322 Total other securities available for sale $ 5,809,633 $ 76,658 $ 33,234 $ 5,853,057 Equity securities: Preferred stock 15,292 122 — 15,414 Mutual funds and common stock (2) 16,871 718 173 17,416 Total equity securities $ 32,163 $ 840 $ 173 $ 32,830 Total securities (3) $ 5,841,796 $ 77,498 $ 33,407 $ 5,885,887 (1) The underlying assets of the asset-backed securities are substantially guaranteed by the U.S. Government. (2) Primarily consists of mutual funds that are CRA-qualified (3) Excludes accrued interest receivable of $24.4 million included in other assets in the Consolidated Statements of Condition. At December 31, 2020 and 2019, respectively, the Company had $714.0 million and $647.6 million of FHLB-NY FHLB-NY The following table summarizes the gross proceeds, gross realized gains, and gross realized losses from the sale of available-for-sale December 31, (in thousands) 2020 2019 2018 Gross proceeds $ 483,872 $ 361,311 $ 278,539 Gross realized gains 1,945 5,445 967 Gross realized losses 1,262 — 981 Net unrealized gains on equity securities recognized in earnings for the years ended December 31, 2020 and 2019, were $582,000 and $2.3 million, respectively. Net unrealized losses on equity securities recognized in earnings for the year ended December 31, 2018 were $2.0 million. The following table summarizes, by contractual maturity, the amortized cost of securities at December 31, 2020: Mortgage- Average U.S. Average State, Average (1) Other (2) Average Fair Value (dollars in thousands) Available-for-Sale Due within one year $ 49,797 3.03 % $ 75,934 0.56 % $ — — % $ 49,704 3.02 $ 176,720 Due from one to five years 405,157 3.16 21,924 3.52 — — 151,873 2.22 615,048 Due from five to ten years 175,689 2.48 138,053 2.37 19,898 3.51 779,401 1.88 1,130,037 Due after ten years 2,311,689 2.15 987,326 1.60 5,878 3.33 540,500 1.29 3,891,528 Total debt securities available for sale $ 2,942,332 2.32 $ 1,223,237 1.66 $ 25,776 3.47 $ 1,521,478 1.74 $ 5,813,333 (1) Not presented on a tax-equivalent (2) Includes corporate bonds, capital trust notes, foreign notes, and asset-backed securities. The following table presents securities having a continuous unrealized loss position for less than twelve months and for twelve months or longer as of December 31, 2020: Less than Twelve Months Twelve Months or Longer Total (in thousands) Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized Temporarily Impaired Securities: U. S. Treasury obligations $ — $ — $ — $ — $ — $ — GSE certificates 58,876 136 — — 58,876 136 GSE CMOs 442,207 2,807 73,568 65 515,775 2,872 GSE debenture 522,441 3,949 — — 522,441 3,949 Asset-backed securities — — 363,618 5,703 363,618 5,703 Municipal bonds — — 8,891 90 8,891 90 Corporate bonds 72,024 2,976 246,528 3,471 318,552 6,447 Foreign notes — — — — — — Capital trust notes — — 33,393 10,500 33,393 10,500 Equity securities — — — — — — Total temporarily impaired securities $ 1,095,548 $ 9,868 $ 725,998 $ 19,829 $ 1,821,546 $ 29,697 The following table presents securities having a continuous unrealized loss position for less than twelve months and for twelve months or longer as of December 31, 2019: Less than Twelve Months Twelve Months or Longer Total (in thousands) Fair Value Unrealized Fair Unrealized Fair Value Unrealized Temporarily Impaired Securities: U. S. Treasury Obligations $ 11,917 $ — $ — $ — $ 11,917 $ — GSE debentures 297,179 3,916 138,189 1,396 435,368 5,312 GSE certificates 396,930 3,718 7,542 45 404,472 3,763 GSE CMOs 609,502 2,582 133,955 959 743,457 3,541 Asset-backed securities 256,619 7,701 116,635 3,154 373,254 10,855 Municipal bonds — — 9,349 475 9,349 475 Corporate bonds 99,300 700 172,717 2,282 272,017 2,982 Capital trust notes — — 37,525 6,306 37,525 6,306 Equity securities — — 11,633 173 11,633 173 Total temporarily impaired securities $ 1,671,447 $ 18,617 $ 627,545 $ 14,790 $ 2,298,992 $ 33,407 The investment securities designated as having a continuous loss position for twelve months or more at December 31, 2020 consisted of four agency collateralized mortgage obligations, five capital trusts notes, seven asset-backed securities, three corporate bonds, and one municipal bond. The investment securities designated as having a continuous loss position for twelve months or more at December 31, 2019 consisted of seven US Government agency securities, five capital trusts notes, three agency mortgage-related securities, three agency CMOs, three asset-backed securities, two corporate bonds, one municipal bond, and one mutual fund. The Company evaluates available-for-sale available-for-sale We first assess whether (i) we intend to sell, or (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis. If either of these criteria is met, any previously recognized allowances are charged off and the security’s amortized cost basis is written down to fair value through income. If neither of the aforementioned criteria are met, we evaluate whether the decline in fair value has resulted from credit losses or other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. None of the unrealized losses identified as of December 31, 2020 or December 31, 2019 relates to the marketability of the securities or the issuers’ ability to honor redemption obligations. Rather, the unrealized losses relate to changes in interest rates relative to when the investment securities were purchased, and do not indicate credit-related impairment. Management based this conclusion on an analysis of each issuer including a detailed credit assessment of each issuer. The Company does not intend to sell, and it is not more likely than not that the Company will be required to sell the positions before the recovery of their amortized cost basis, which may be at maturity. As such, no allowance for credit losses was recorded with respect to debt securities as of or during the nine months ended December 31, 2020. Management has made the accounting policy election to exclude accrued interest receivable on available-for-sale Available-for-sale non-accrual non-accrual

Loans and Leases

Loans and Leases	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Loans and Leases	Note 5. Loans and Leases The following table sets forth the composition of the loan portfolio at the dates indicated: March 31, 2021 December 31, 2020 (dollars in thousands) Amount Percent of Amount Percent of Loans and Leases Held for Investment: Mortgage Loans: Multi-family $ 32,195,256 74.77 % $ 32,236,385 75.28 % Commercial real estate 7,027,236 16.32 6,835,763 15.96 One-to-four 208,108 0.48 235,989 0.55 Acquisition, development, and construction 115,947 0.27 89,790 0.21 Total mortgage loans held for investment (1) 39,546,547 91.84 $ 39,397,927 92.00 Other Loans: Commercial and industrial 1,610,550 3.74 1,682,519 3.93 Lease financing, net of unearned income of $110,582 and $116,366, respectively 1,898,980 4.41 1,734,824 4.05 Total commercial and industrial loans (2) 3,509,530 8.15 3,417,343 7.98 Other 5,593 0.01 6,520 0.02 Total other loans held for investment (1) 3,515,123 8.16 3,423,863 8.00 Total loans and leases held for investment $ 43,061,670 100.00 % $ 42,821,790 100.00 % Net deferred loan origination costs 63,469 61,808 Allowance for credit losses loans and leases (197,758 ) (194,043 ) Total loans and leases held for investment, net $ 42,927,381 $ 42,689,555 Loans held for sale (3) 141,435 117,136 Total loans and leases, net $ 43,068,816 $ 42,806,691 (1) Excludes accrued interest receivable of $219.0 million and $219.1 million at March 31, 2021 and December 31, 2020, respectively, which is included in other assets in the Consolidated Statements of Condition. (2) Includes specialty finance loans and leases of $3.2 billion and $3.0 billion, respectively, at March 31, 2021 and December 31, 2020, and other C&I loans of $350.8 million and $393.3 million, respectively, at March 31, 2021 and December 31, 2020. (3) Includes deferred loan origination fees of $3.8 million and $1.7 million at March 31, 2021 and December 31, 2020, respectively. Loans Held for Investment The majority of the loans the Company originates for investment are multi-family loans, most of which are collateralized by non-luxury mixed-use To a lesser extent, the Company also originates ADC loans for investment. One-to-four ADC loans are primarily originated for multi-family and residential tract projects in New York City and on Long Island. C&I loans consist of asset-based loans, equipment loans and leases, and dealer floor-plan loans (together, specialty finance loans and leases) that generally are made to large corporate obligors, many of which are publicly traded, carry investment grade or near-investment grade ratings, and participate in stable industries nationwide; and other C&I loans that primarily are made to small and mid-size The repayment of multi-family and CRE loans generally depends on the income produced by the underlying properties which, in turn, depends on their successful operation and management. To mitigate the potential for credit losses, the Company underwrites its loans in accordance with credit standards it considers to be prudent, looking first at the consistency of the cash flows being produced by the underlying property. In addition, multi-family buildings, CRE properties, and ADC projects are inspected as a prerequisite to approval, and independent appraisers, whose appraisals are carefully reviewed by the Company’s in-house To further manage its credit risk, the Company’s lending policies limit the amount of credit granted to any one borrower and typically require conservative debt service coverage ratios and loan-to-value ADC loans typically involve a higher degree of credit risk than loans secured by improved or owner-occupied real estate. Accordingly, borrowers are required to provide a guarantee of repayment and completion, and loan proceeds are disbursed as construction progresses, as certified by in-house To minimize the risk involved in specialty finance lending and leasing, the Company participates in syndicated loans that are brought to it, and equipment loans and leases that are assigned to it, by a select group of nationally recognized sources who have long-term relationships with its experienced lending officers. Each of these credits is secured with a perfected first security interest in or outright ownership of the underlying collateral, and structured as senior debt or as a non-cancelable re-underwritten. To minimize the risks involved in other C&I lending, the Company underwrites such loans on the basis of the cash flows produced by the business; requires that such loans be collateralized by various business assets, including inventory, equipment, and accounts receivable, among others; and typically requires personal guarantees. However, the capacity of a borrower to repay such a C&I loan is substantially dependent on the degree to which the business is successful. In addition, the collateral underlying such loans may depreciate over time, may not be conducive to appraisal, or may fluctuate in value, based upon the results of operations of the business. Included in loans held for investment at March 31, 2021 and December 31, 2020, were loans of $7.0 million and $37.5 million, respectively, to certain officers, directors, and their related interests and parties. There were no loans to principal shareholders at that date. Asset Quality A loan generally is classified as a non-accrual non-accrual non-accrual non-performing non-accrual The following table presents information regarding the quality of the Company’s loans held for investment at March 31, 2021: (in thousands) Loans 30-89 Non- Loans Total Current Total Loans Multi-family $ 961 $ 9,888 $ — $ 10,849 $ 32,184,407 $ 32,195,256 Commercial real estate 19,371 11,573 — 30,944 6,996,292 7,027,236 One-to-four — 1,466 — 1,466 206,642 208,108 Acquisition, development, and construction — — — — 115,947 115,947 Commercial and industrial (1)(2) — 10,247 — 10,247 3,499,283 3,509,530 Other 13 4 — 17 5,576 5,593 Total loans and leases held for investment $ 20,345 $ 33,178 $ — $ 53,523 $ 43,008,147 $ 43,061,670 (1) Includes $10.1 million of taxi medallion-related loans that were 90 days or more past due. There were no taxi medallion-related loans that were 30 to 89 days past due. (2) Includes lease financing receivables, all of which were current. The following table presents information regarding the quality of the Company’s loans held for investment at December 31, 2020: (in thousands) Loans 30-89 Non- Loans Total Current Total Loans Multi-family $ 4,091 $ 4,068 $ — $ 8,159 $ 32,228,226 $ 32,236,385 Commercial real estate 9,989 12,142 — 22,131 6,813,632 6,835,763 One-to-four 1,575 1,696 — 3,271 232,718 235,989 Acquisition, development, and construction — — — — 89,790 89,790 Commercial and industrial (1)(2) — 19,866 — 19,866 3,397,477 3,417,343 Other 3 13 — 16 6,504 6,520 Total $ 15,658 $ 37,785 $ — $ 53,443 $ 42,768,347 $ 42,821,790 (1) Includes $18.6 million of taxi medallion-related loans that were 90 days or more past due. There were no taxi medallion-related loans that were 30 to 89 days past due. (2) Includes lease financing receivables, all of which were current. The following table summarizes the Company’s portfolio of loans held for investment by credit quality indicator at March 31, 2021: Mortgage Loans Other Loans (in thousands) Multi- Commercial One-to- Acquisition, Total Commercial (1) Other Total Other Credit Quality Indicator: Pass $ 30,647,027 $ 5,867,168 $ 194,220 $ 101,958 $ 36,810,373 $ 3,450,432 $ 5,589 $ 3,456,021 Special mention 875,091 785,007 5,354 13,989 1,679,441 2,071 — 2,071 Substandard 673,138 375,061 8,534 — 1,056,733 57,027 4 57,031 Doubtful — — — — — — — — Total $ 32,195,256 $ 7,027,236 $ 208,108 $ 115,947 $ 39,546,547 $ 3,509,530 $ 5,593 $ 3,515,123 (1) Includes lease financing receivables, all of which were classified as Pass. The following table summarizes the Company’s portfolio of loans held for investment by credit quality indicator at December 31, 2020: Mortgage Loans Other Loans (in thousands) Multi- Commercial One-to- Acquisition, Total Commercial (1) Other Total Other Credit Quality Indicator: Pass $ 31,220,071 $ 5,884,244 $ 221,861 $ 68,233 $ 37,394,409 $ 3,388,293 $ 6,507 $ 3,394,800 Special mention 566,756 637,101 12,436 21,557 1,237,850 2,842 — 2,842 Substandard 449,558 314,418 1,692 — 765,668 26,208 13 26,221 Doubtful — — — — — — — — Total $ 32,236,385 $ 6,835,763 $ 235,989 $ 89,790 $ 39,397,927 $ 3,417,343 $ 6,520 $ 3,423,863 (1) Includes lease financing receivables, all of which were classified as Pass. The preceding classifications are the most current ones available and generally have been updated within the last twelve months. In addition, they follow regulatory guidelines and can generally be described as follows: pass loans are of satisfactory quality; special mention loans have potential weaknesses that deserve management’s close attention; substandard loans are inadequately protected by the current net worth and paying capacity of the borrower or of the collateral pledged (these loans have a well-defined weakness and there is a possibility that the Company will sustain some loss); and doubtful loans, based on existing circumstances, have weaknesses that make collection or liquidation in full highly questionable and improbable. In addition, one-to-four The following table presents, by credit quality indicator, loan class, and year of origination, the amortized cost basis of the Company’s loans and leases as of March 31, 2021. (in thousands) Vintage Year Risk Rating Group 2021 2020 2019 2018 2017 Prior To Revolving Total Pass $ 2,092,263 $ 9,587,201 $ 6,432,567 $ 5,472,277 $ 3,995,854 $ 9,238,124 $ 20,182 $ 36,838,468 Special Mention — 13,067 215,301 345,152 136,466 969,925 — 1,679,911 Substandard — — 193,116 249,729 109,848 503,900 — 1,056,593 Total mortgage loans $ 2,092,263 $ 9,600,268 $ 6,840,984 $ 6,067,158 $ 4,242,168 $ 10,711,949 $ 20,182 $ 39,574,972 Pass 249,885 1,004,860 679,606 149,190 195,499 235,594 976,916 3,491,550 Special Mention — — 71 — — — 2,000 2,071 Substandard — 2,132 3,723 1,840 8,688 13,844 26,319 56,546 Total other loans 249,885 1,006,992 683,400 151,030 204,187 249,438 1,005,235 3,550,167 Total $ 2,342,148 $ 10,607,260 $ 7,524,384 $ 6,218,188 $ 4,446,355 $ 10,961,387 $ 1,025,417 $ 43,125,139 When management determines that foreclosure is probable, expected credit losses are based on the fair value of the collateral adjusted for selling costs. When the borrower is experiencing financial difficulty at the reporting date and repayment is expected to be provided substantially through the operation or sale of the collateral, the collateral-dependent practical expedient has been elected and expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. For CRE loans, collateral properties include office buildings, warehouse/distribution buildings, shopping centers, apartment buildings, residential and commercial tract development. The primary source of repayment on these loans is expected to come from the sale, permanent financing or lease of the real property collateral. CRE loans are impacted by fluctuations in collateral values, as well as the ability of the borrower to obtain permanent financing. The following table summarizes the extent to which collateral secures the Company’s collateral-dependent loans held for investment by collateral type as of March 31, 2021: Collateral Type (in thousands) Real Property Other Multi-family $ 6,840 $ — Commercial real estate 25,386 — One-to-four 329 — Acquisition, development, and construction — — Commercial and industrial — 16,769 Other — — Total collateral-dependent loans held for investment $ 32,555 $ 16,769 Other collateral primarily consists of taxi medallions, cash, accounts receivable and inventory. There were no significant changes in the extent to which collateral secures the Company’s collateral-dependent financial assets during the three months ended March 31, 2021. Troubled Debt Restructurings The Company is required to account for certain loan modifications and restructurings as TDRs. In general, a modification or restructuring of a loan constitutes a TDR if the Company grants a concession to a borrower experiencing financial difficulty. A loan modified as a TDR generally is placed on non-accrual In an effort to proactively manage delinquent loans, the Company has selectively extended to certain borrowers concessions such as rate reductions, extension of maturity dates, and forbearance agreements. As of March 31, 2021, loans on which concessions were made with respect to rate reductions and/or extension of maturity dates amounted to $32.1 million; loans on which forbearance agreements were reached amounted to $146 thousand. The CARES Act was enacted on March 27, 2020. Under the CARES Act, the Company made the election to deem that loan modifications do not result in TDRs if they are (1) related to the novel coronavirus disease (“COVID-19”); COVID-19 The following table presents information regarding the Company’s TDRs as of March 31, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 (in thousands) Accruing Non-Accrual Total Accruing Non-Accrual Total Loan Category: Multi-family $ — $ 6,840 $ 6,840 $ — $ — $ — Commercial real estate 14,894 — 14,894 14,967 — 14,967 One-to-four — 330 330 — 557 557 Commercial and industrial (1) — 10,134 10,134 — 18,761 18,761 Total $ 14,894 $ 17,304 $ 32,198 $ 14,967 $ 19,318 $ 34,285 (1) Includes $10.0 million and $17.5 million of taxi medallion-related loans at March 31, 2021 and December 31, 2020, respectively. The eligibility of a borrower for work-out The financial effects of the Company’s TDRs for the three months ended March 31, 2021 and 2020 are summarized as follows: For the Three Months Ended March 31, 2021 Weighted Average (dollars in thousands) Number Pre- Post- Pre- Post- Charge- Capitalized Loan Category: Multi-family 1 $ 7,515 $ 7,515 3.13 % 3.25 % $ — $ — For the Three Months Ended March 31, 2020 Weighted Average (dollars in thousands) Number Pre- Post- Pre- Post- Charge- Capitalized Loan Category: Commercial and industrial 8 $ 1,920 $ 1,572 3.29 % 3.24 % $ 348 $ — At March 31, 2021, 17 C&I loans in the aggregate amount of $2.1 million have been modified as TDRs during the twelve months ended at that date, and were in payment default. At March 31, 2020, five C&I and one 1-4 The Company does not consider a payment to be in default when the loan is in forbearance, or otherwise granted a delay of payment, when the agreement to forebear or allow a delay of payment is part of a modification. Subsequent to the modification, the loan is not considered to be in default until payment is contractually past due in accordance with the modified terms. However, the Company may consider a loan with multiple modifications or forbearance periods to be in default, and would consider a loan to be in default if the borrower were in bankruptcy or if the loan were partially charged off subsequent to modification. Management takes into consideration all TDR modifications in determining the appropriate level of the allowance.	NOTE 5: LOANS AND LEASES The following table sets forth the composition of the loan and lease portfolio at the dates indicated: December 31, 2020 December 31, 2019 (dollars in thousands) Amount Percent of Amount Percent of Loans and Leases Held for Investment: Mortgage Loans: Multi-family $ 32,236,385 75.28 % $ 31,158,672 74.46 % Commercial real estate 6,835,763 15.96 7,081,910 16.93 One-to-four 235,989 0.55 380,361 0.91 Acquisition, development, and construction 89,790 0.21 200,596 0.48 Total mortgage loans held for investment (1) 39,397,927 92.00 38,821,539 92.78 Other Loans: Commercial and industrial 1,682,519 3.93 1,742,380 4.16 Lease financing, net of unearned income of $116,366 and $104,826, respectively 1,734,824 4.05 1,271,998 3.04 Total commercial and industrial loans (2) 3,417,343 7.98 3,014,378 7.20 Other 6,520 0.02 8,102 0.02 Total other loans held for investment 3,423,863 8.00 3,022,480 7.22 Total loans and leases held for investment (1) $ 42,821,790 100.00 % $ 41,844,019 100.00 % Net deferred loan origination costs 61,808 50,136 Allowance for loan and lease losses (194,043 ) (147,638 ) Total loans and leases held for investment, net $ 42,689,555 $ 41,746,517 Loans held for sale (3) 117,136 — Total loans and leases, net $ 42,806,691 $ 41,746,517 (1) Excludes accrued interest receivable of $219.1 million and $116.9 million at December 31, 2020 and December 31, 2019, respectively, which is included in other assets in the Consolidated Statements of Condition. (2) Includes specialty finance loans and leases of $3.0 billion and $2.6 billion, respectively, at December 31, 2020 and December 31, 2019, and other C&I loans of $393.3 million and $420.1 million, respectively, at December 31, 2020 and December 31, 2019. (3) Includes deferred loan origination fees of $1.7 million. Loans and Leases Loans and Leases Held for Investment The majority of the loans the Company originates for investment are multi-family loans, most of which are collateralized by non-luxury mixed-use To a lesser extent, the Company also originates ADC loans for investment. One-to-four ADC loans are primarily originated for multi-family and residential tract projects in New York City and on Long Island. C&I loans consist of asset-based loans, equipment loans and leases, and dealer floor-plan loans (together, specialty finance loans and leases) that generally are made to large corporate obligors, many of which are publicly traded, carry investment grade or near-investment grade ratings, and participate in stable industries nationwide; and other C&I loans that primarily are made to small and mid-size The repayment of multi-family and CRE loans generally depends on the income produced by the underlying properties which, in turn, depends on their successful operation and management. To mitigate the potential for credit losses, the Company underwrites its loans in accordance with credit standards it considers to be prudent, looking first at the consistency of the cash flows being produced by the underlying property. In addition, multi-family buildings, CRE properties, and ADC projects are inspected as a prerequisite to approval, and independent appraisers, whose appraisals are carefully reviewed by the Company’s in-house To further manage its credit risk, the Company’s lending policies limit the amount of credit granted to any one borrower and typically require conservative debt service coverage ratios and loan-to-value ADC loans typically involve a higher degree of credit risk than loans secured by improved or owner-occupied real estate. Accordingly, borrowers are required to provide a guarantee of repayment and completion, and loan proceeds are disbursed as construction progresses, as certified by in-house To minimize the risk involved in specialty finance lending and leasing, the Company participates in syndicated loans that are brought to it, and equipment loans and leases that are assigned to it, by a select group of nationally recognized sources who have had long-term relationships with its experienced lending officers. Each of these credits is secured with a perfected first security interest or outright ownership in the underlying collateral, and structured as senior debt or as a non-cancelable re-underwritten. To minimize the risks involved in other C&I lending, the Company underwrites such loans on the basis of the cash flows produced by the business; requires that such loans be collateralized by various business assets, including inventory, equipment, and accounts receivable, among others; and typically requires personal guarantees. However, the capacity of a borrower to repay such a C&I loan is substantially dependent on the degree to which the business is successful. In addition, the collateral underlying such loans may depreciate over time, may not be conducive to appraisal, or may fluctuate in value, based upon the results of operations of the business. Included in loans held for investment at December 31, 2020 and December 31, 2019, were loans of $37.5 million and $38.2 million, respectively, to officers, directors, and their related interests and parties. There were no loans to principal shareholders at that date. Asset Quality A loan generally is classified as a non-accrual non-accrual non-accrual non-performing non-accrual The following table presents information regarding the quality of the Company’s loans held for investment at December 31, 2020: (in thousands) Loans 30-89 Non- Loans 90 Total Current Total Multi-family $ 4,091 $ 4,068 $ — $ 8,159 $ 32,228,226 $ 32,236,385 Commercial real estate 9,989 12,142 — 22,131 6,813,632 6,835,763 One-to-four 1,575 1,696 — 3,271 232,718 235,989 Acquisition, development, and construction — — — — 89,790 89,790 Commercial and industrial (1) (2) — 19,866 — 19,866 3,397,477 3,417,343 Other 3 13 — 16 6,504 6,520 Total $ 15,658 $ 37,785 $ — $ 53,443 $ 42,768,347 $ 42,821,790 (1) Includes $18.6 million of taxi medallion-related loans that were 90 days or more past due. There were no taxi medallion-related loans that were 30 89 (2) Includes lease financing receivables, all of which were current. The following table presents information regarding the quality of the Company’s loans held for investment at December 31, 2019: (in thousands) Loans 30-89 Non- Loans 90 Total Current Total Multi-family $ 1,131 $ 5,407 $ — $ 6,538 $ 31,152,134 $ 31,158,672 Commercial real estate 2,545 14,830 — 17,375 7,064,535 7,081,910 One-to-four — 1,730 — 1,730 378,631 380,361 Acquisition, development, and construction — — — — 200,596 200,596 Commercial and industrial (1) (2) — 39,024 — 39,024 2,975,354 3,014,378 Other 44 252 — 296 7,806 8,102 Total $ 3,720 $ 61,243 $ — $ 64,963 $ 41,779,056 $ 41,844,019 (1) Includes $30.4 million of taxi medallion-related loans that were 90 days or more past due. There were no taxi medallion-related loans that were 30 to 89 days past due. (2) Includes lease financing receivables, all of which were current. The following table summarizes the Company’s portfolio of loans held for investment by credit quality indicator at December 31, 2020: Mortgage Loans Other Loans (in thousands) Multi- Commercial One-to- Acquisition, Total Commercial (1) Other Total Credit Quality Indicator: Pass $ 31,220,071 $ 5,884,244 $ 221,861 $ 68,233 $ 37,394,409 $ 3,388,293 $ 6,507 $ 3,394,800 Special mention 566,756 637,101 12,436 21,557 1,237,850 2,842 — 2,842 Substandard 449,558 314,418 1,692 — 765,668 26,208 13 26,221 Doubtful — — — — — — — — Total $ 32,236,385 $ 6,835,763 $ 235,989 $ 89,790 $ 39,397,927 $ 3,417,343 $ 6,520 $ 3,423,863 (1) Includes lease financing receivables, all of which were classified as Pass. The following table summarizes the Company’s portfolio of loans held for investment by credit quality indicator at December 31, 2019: Mortgage Loans Other Loans (in thousands) Multi- Commercial One-to- Acquisition, Total Commercial (1) Other Total Credit Quality Indicator: Pass $ 30,903,657 $ 6,902,218 $ 377,883 $ 158,751 $ 38,342,509 $ 2,960,557 $ 7,850 $ 2,968,407 Special mention 239,664 104,648 748 41,456 386,516 1,588 — 1,588 Substandard 15,351 75,044 1,730 389 92,514 52,233 252 52,485 Doubtful — — — — — — — Total $ 31,158,672 $ 7,081,910 $ 380,361 $ 200,596 $ 38,821,539 $ 3,014,378 $ 8,102 $ 3,022,480 (1) Includes lease financing receivables, all of which were classified as Pass. The preceding classifications are the most current ones available and generally have been updated within the last twelve months. In addition, they follow regulatory guidelines and can generally be described as follows: pass loans are of satisfactory quality; special mention loans have potential weaknesses that deserve management’s close attention; substandard loans are inadequately protected by the current net worth and paying capacity of the borrower or of the collateral pledged (these loans have a well-defined weakness and there is a possibility that the Company will sustain some loss); and doubtful loans, based on existing circumstances, have weaknesses that make collection or liquidation in full highly questionable and improbable. In addition, one-to-four The following table presents, by credit quality indicator, loan class, and year of origination, the amortized cost basis of the Company’s loans and leases as of December 31, 2020. (in thousands) Vintage Year Risk Rating Group 2020 2019 2018 2017 2016 Prior To Revolving Total Pass $ 9,819,431 $ 6,719,587 $ 5,986,476 $ 4,260,433 $ 3,062,012 $ 7,571,266 $ 24,608 $ 37,443,813 Special Mention 13,067 116,400 176,428 164,635 332,176 425,632 — 1,228,338 Substandard — 121,861 177,123 60,924 221,835 172,293 — 754,036 Total mortgage loans $ 9,832,498 $ 6,957,848 $ 6,340,027 $ 4,485,992 $ 3,616,023 $ 8,169,191 $ 24,608 $ 39,426,187 Pass 962,956 757,220 180,133 209,963 126,680 144,999 1,046,400 3,428,351 Special Mention — 42 — — — — 2,800 2,842 Substandard 2,987 5,284 3,103 12,558 1,252 1,034 — 26,218 Total other loans 965,943 762,546 183,236 222,521 127,932 146,033 1,049,200 3,457,411 Total $ 10,798,441 $ 7,720,394 $ 6,523,263 $ 4,708,513 $ 3,743,955 $ 8,315,224 $ 1,073,808 $ 42,883,598 When management determines that foreclosure is probable, expected credit losses are based on the fair value of the collateral adjusted for selling costs. When the borrower is experiencing financial difficulty at the reporting date and repayment is expected to be provided substantially through the operation or sale of the collateral, the collateral-dependent practical expedient has been elected and expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. For CRE loans, collateral properties include office buildings, warehouse/distribution buildings, shopping centers, apartment buildings, residential and commercial tract development. The primary source of repayment on these loans is expected to come from the sale, permanent financing or lease of the real property collateral. CRE loans are impacted by fluctuations in collateral values, as well as the ability of the borrower to obtain permanent financing. The following table summarizes the extent to which collateral secures the Company’s collateral-dependent loans held for investment by collateral type as of December 31, 2020: Collateral Type (in thousands) Real Other Multi-family $ 7,525 $ — Commercial real estate 25,462 — One-to-four 557 — Acquisition, development, and construction — — Commercial and industrial — 26,487 Other — — Total collateral-dependent loans held for investment $ 33,544 26,487 Other collateral primarily consists of taxi medallions, cash, accounts receivable and inventory. There were no At December 31, 2020 and December 31, 2019, the Company had no residential mortgage loans in the process of foreclosure. The interest income that would have been recorded under the original terms of non-accrual December 31, (in thousands) 2020 2019 2018 Interest income that would have been recorded $ 4,491 $ 5,599 $ 4,145 Interest income actually recorded (939 ) (3,409 ) (3,480 ) Interest income foregone $ 3,552 $ 2,190 $ 665 Troubled Debt Restructurings The Company is required to account for certain loan modifications and restructurings as TDRs. In general, a modification or restructuring of a loan constitutes a TDR if the Company grants a concession to a borrower experiencing financial difficulty. A loan modified as a TDR generally is placed on non-accrual In an effort to proactively manage delinquent loans, the Company has selectively extended to certain borrowers concessions such as rate reductions, extension of maturity dates, and forbearance agreements. As of December 31, 2020, loans on which concessions were made with respect to rate reductions and/or extension of maturity dates amounted to $18.1million; loans on which forbearance agreements were reached amounted to $16.2 million. The CARES Act was enacted on March 27, 2020. Under the CARES Act, the Company made the election to deem that loan modifications do not result in TDRs if they are (1) related to the novel coronavirus disease (“COVID-19”); The following table presents information regarding the Company’s TDRs as of December 31, 2020 and 2019: December 31, 2020 December 31, 2019 (in thousands) Accruing Non- Total Accruing Non- Total Loan Category: Multi-family $ — $ — $ — — 3,577 3,577 Commercial real estate 14,967 — 14,967 — — — One-to-four — 557 557 — 584 584 Acquisition, development, and construction — — — 389 — 389 Commercial and industrial (1) — 18,761 18,761 865 35,084 35,949 Total $ 14,967 $ 19,318 $ 34,285 1,254 39,245 40,499 (1) Includes $ 17.5 27.3 The eligibility of a borrower for work-out The financial effects of the Company’s TDRs for the twelve months ended December 31, 2020, 2019 and 2018 are summarized as follows: For the Twelve Months Ended December 31, 2020 Weighted Average (dollars in thousands) Number Pre- Post- Pre- Post- Charge- Capitalized Loan Category: Commercial real estate 1 $ 15,119 $ 15,119 8.00 % 3.50 % $ — $ — Commercial and industrial 42 8,912 7,471 2.36 2.23 1,441 — Total 43 $ 24,031 $ 22,590 $ 1,441 $ — For the Twelve Months Ended December 31, 2019 Weighted Average (dollars in thousands) Number Pre- Post- Pre- Post- Charge- Capitalized Loan Category: One-to-four 1 131 131 5.50 5.50 — 3 Commercial and industrial 72 35,156 30,685 4.31 4.37 4,471 — Total 73 $ 35,287 $ 30,816 $ 4,471 $ 3 For the Twelve Months Ended December 31, 2018 Weighted Average (dollars in thousands) Number Pre- Post- Pre- Post- Charge- Capitalized Loan Category: Acquisition, development, and construction 1 $ 900 $ 900 4.50 % 4.50 % $ — $ — Commercial and industrial 21 7,763 5,455 3.25 3.13 2,308 — Total 22 $ 8,663 $ 6,355 $ 2,308 $ — At December 31, 2020, C&I loans totaling $ 3.2 one-to-four 1.1 194,000 The Company does not consider a payment to be in default when the loan is in forbearance, or otherwise granted a delay of payment, when the agreement to forebear or allow a delay of payment is part of a modification. Subsequent to the modification, the loan is not considered to be in default until payment is contractually past due in accordance with the modified terms. However, the Company does consider a loan with multiple modifications or forbearance periods to be in default, and would also consider a loan to be in default if the borrower were in bankruptcy or if the loan were partially charged off subsequent to modification.

Allowance for Credit Losses on

Allowance for Credit Losses on Loans and Leases	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Allowance For Credit Losses On Loans And Leases [Abstract]
Allowance for Credit Losses on Loans and Leases	Note 6. Allowance for Credit Losses on Loans and Leases Allowance for Credit Losses on Loans and Leases The following table summarizes activity in the allowance for credit losses on loans and leases for the periods indicated: For the Three Months Ended March 31, 2021 2020 (in thousands) Mortgage Other Total Mortgage Other Total Balance, beginning of period $ 176,538 $ 17,505 $ 194,043 $ 122,695 $ 24,943 $ 147,638 Impact of CECL adoption — — — (178 ) 2,089 1,911 Adjusted balance, beginning of period 176,538 17,505 194,043 122,517 27,032 149,549 Charge-offs (658 ) (3,666 ) (4,324 ) — (10,385 ) (10,385 ) Recoveries 20 4,821 4,841 11 178 189 Provision for credit losses 527 2,671 3,198 18,786 4,105 22,891 Balance, end of period $ 176,427 $ 21,331 $ 197,758 $ 141,314 $ 20,930 $ 162,244 At March 31, 2021, the allowance for credit losses on loans and leases totaled $197.8 million, up $3.7 million compared to December 31, 2020, driven by a provision for credit losses of $3.6 million. Separately, at March 31, 2021, the Company had an allowance for unfunded commitments of $12.3 million. For the three months ended March 31, 2021, the allowance for credit losses on loans and leases increased modestly primarily due to qualitative adjustments surrounding the COVID-19 The Company charges off loans, or portions of loans, in the period that such loans, or portions thereof, are deemed uncollectible. The collectability of individual loans is determined through an assessment of the financial condition and repayment capacity of the borrower and/or through an estimate of the fair value of any underlying collateral. For non-real past-due (1) closed-end (2) open-end closed-end open-end The following table presents additional information about the Company’s nonaccrual loans at March 31, 2021: (in thousands) Recorded Related Interest Nonaccrual loans with no related allowance: Multi-family $ 6,840 $ — $ 81 Commercial real estate 10,491 — — One-to-four 330 — 3 Acquisition, development, and construction — — — Other 10,205 — 18 Total nonaccrual loans with no related allowance $ 27,866 $ — $ 102 Nonaccrual loans with an allowance recorded: Multi-family $ 3,048 $ 435 $ — Commercial real estate 1,082 84 2 One-to-four 1,137 365 3 Acquisition, development, and construction — — — Other 45 20 1 Total nonaccrual loans with an allowance recorded $ 5,312 $ 904 $ 6 Total nonaccrual loans: Multi-family $ 9,888 $ 435 $ 81 Commercial real estate 11,573 84 2 One-to-four 1,467 365 6 Acquisition, development, and construction — — — Other 10,250 20 19 Total nonaccrual loans $ 33,178 $ 904 $ 108 The following table presents additional information about the Company’s nonaccrual loans at December 31, 2020: (in thousands) Recorded Related Interest Nonaccrual loans with no related allowance: Multi-family $ — $ — $ — Commercial real estate 2,256 — — One-to-four 557 — 21 Acquisition, development, and construction — — — Other 19,821 — 820 Total nonaccrual loans with no related allowance $ 22,634 $ — $ 841 Nonaccrual loans with an allowance recorded: Multi-family $ 4,068 $ 589 $ 28 Commercial real estate 9,886 133 52 One-to-four 1,139 370 14 Acquisition, development, and construction — — — Other 58 18 5 Total nonaccrual loans with an allowance recorded $ 15,151 $ 1,110 $ 99 Total nonaccrual loans: Multi-family $ 4,068 $ 589 $ 28 Commercial real estate 12,142 133 52 One-to-four 1,696 370 35 Acquisition, development, and construction — — — Other 19,879 18 825 Total nonaccrual loans $ 37,785 $ 1,110 $ 940	NOTE 6: ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES Allowance for Credit Losses on Loans and Leases The following table summarizes activity in the allowance for loan and lease losses for the periods indicated: Twelve Months Ended December 31, 2020 2019 (in thousands) Mortgage Other Total Mortgage Other Total Balance, beginning of period $ 122,694 $ 24,944 $ 147,638 $ 130,983 $ 28,837 $ 159,820 Impact of CECL adoption 99 1,812 1,911 — — — Adjusted balance, beginning of period 122,793 26,756 149,549 130,983 28,837 159,820 Charge-offs (1,872 ) (20,306 ) (22,178 ) (1,613 ) (18,694 ) (20,307 ) Recoveries 1,172 2,221 3,393 61 959 1,020 Provision for (recovery of) credit losses on loans and leases 54,445 8,834 63,279 (6,737 ) 13,842 7,105 Balance, end of period $ 176,538 $ 17,505 $ 194,043 $ 122,694 $ 24,944 $ 147,638 At December 31, 2020, the allowance for credit losses on loans and leases totaled $194.0 million, up $46.4 million compared to December 31, 2019, driven by a provision for credit losses of $63.3 million that exceeded net charge-offs by $44.5 million during the year 2020. Separately, at December 31, 2019, the Company had an allowance for unfunded commitments of $461,000. With the adoption of CECL on January 1, 2020, The Company recognized a “Day 1” transition adjustment of $12.5 million. At December 31, 2020, the allowance for unfunded commitments totaled $11.9 million. For the year ended December 31, 2020 the allowance for credit losses on loans and leases increased primarily due to negative changes in the macroeconomic factors surrounding the COVID-19 The Company charges off loans, or portions of loans, in the period that such loans, or portions thereof, are deemed uncollectible. The collectability of individual loans is determined through an assessment of the financial condition and repayment capacity of the borrower and/or through an estimate of the fair value of any underlying collateral. For non-real past-due (1) closed-end (2) open-end closed-end open-end The following table presents additional information about the Company’s nonaccrual loans at December 31, 2020: (in thousands) Recorded Related Interest Nonaccrual loans with no related allowance: Multi-family $ — $ — $ — Commercial real estate 2,256 — — One-to-four 557 — 21 Acquisition, development, and construction — — — Other 19,821 — 820 Total nonaccrual loans with no related allowance $ 22,634 $ — $ 841 Nonaccrual loans with an allowance recorded: Multi-family $ 4,068 $ 589 $ 28 Commercial real estate 9,886 133 52 One-to-four 1,139 370 14 Acquisition, development, and construction — — — Other 58 18 5 Total nonaccrual loans with an allowance recorded $ 15,151 $ 1,110 $ 99 Total nonaccrual loans: Multi-family $ 4,068 $ 589 $ 28 Commercial real estate 12,142 133 52 One-to-four 1,696 370 35 Acquisition, development, and construction — — — Other 19,879 18 825 Total nonaccrual loans $ 37,785 $ 1,110 $ 940 The following table presents additional information about the Company’s impaired loans at December 31, 2019: (in thousands) Recorded Unpaid Related Average Interest Impaired loans with no related allowance: Multi-family $ 3,577 $ 6,790 $ — $ 4,336 $ 266 Commercial real estate 14,717 19,832 — 6,140 371 One-to-four 584 602 — 811 21 Acquisition, development, and construction 389 1,289 — 3,508 364 Other 37,669 114,636 — 39,598 2,494 Total impaired loans with no related allowance $ 56,936 $ 143,149 $ — $ 54,393 $ 3,516 Impaired loans with an allowance recorded: Multi-family $ — $ — $ — $ — $ — Commercial real estate — — — — — One-to-four — — — — — Acquisition, development, and construction — — — — — Other 1,445 4,173 116 4,111 13 Total impaired loans with an allowance recorded $ 1,445 $ 4,173 $ 116 $ 4,111 $ 13 Total impaired loans: Multi-family $ 3,577 $ 6,790 $ — $ 4,336 $ 266 Commercial real estate 14,717 19,832 — 6,140 371 One-to-four 584 602 — 811 21 Acquisition, development, and construction 389 1,289 — 3,508 364 Other 39,114 118,809 116 43,709 2,507 Total impaired loans $ 58,381 $ 147,322 $ 116 $ 58,504 $ 3,529

Leases

Leases	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Leases	Note 11. Leases Lessor Arrangements The Company is a lessor in the equipment finance business where it has executed direct financing leases (“lease finance receivables”). The Company produces lease finance receivables through a specialty finance subsidiary that participates in syndicated loans that are brought to them, and equipment loans and leases that are assigned to them, by a select group of nationally recognized sources, and are generally made to large corporate obligors, many of which are publicly traded, carry investment grade or near-investment grade ratings, and participate in stable industries nationwide. Lease finance receivables are carried at the aggregate of lease payments receivable plus the estimated residual value of the leased assets and any initial direct costs incurred to originate these leases, less unearned income, which is accreted to interest income over the lease term using the interest method. The standard leases are typically repayable on a level monthly basis with terms ranging from 24 to 120 months. At the end of the lease term, the lessee usually has the option to return the equipment, to renew the lease or purchase the equipment at the then fair market value (“FMV”) price. For leases with a FMV renewal/purchase option, the relevant residual value assumptions are based on the estimated value of the leased asset at the end of lease term, including evaluation of key factors, such as, the estimated remaining useful life of the leased asset, its historical secondary market value including history of the lessee executing the FMV option, overall credit evaluation and return provisions. The Company acquires the leased asset at fair market value and provides funding to the respective lessee at acquisition cost, less any volume or trade discounts, as applicable. Therefore, there is generally no selling profit or loss to recognize or defer at inception of a lease. The residual value component of a lease financing receivable represents the estimated fair value of the leased equipment at the end of the lease term. In establishing residual value estimates, the Company may rely on industry data, historical experience, and independent appraisals and, where appropriate, information regarding product life cycle, product upgrades and competing products. Upon expiration of a lease, residual assets are remarketed, resulting in an extension of the lease by the lessee, a lease to a new customer or purchase of the residual asset by the lessee or another party. Impairment of residual values arises if the expected fair value is less than the carrying amount. The Company assesses its net investment in lease financing receivables (including residual values) for impairment on an annual basis with any impairment losses recognized in accordance with the impairment guidance for financial instruments. As such, net investment in lease financing receivables may be reduced by an allowance for credit losses with changes recognized as provision expense. On certain lease financings, the Company obtains residual value insurance from third parties to manage and reduce the risk associated with the residual value of the leased assets. At March 31, 2021 and December 31, 2020, the carrying value of residual assets with third-party residual value insurance for at least a portion of the asset value was $63.0 million and $70.6 million, respectively. The Company uses the interest rate implicit in the lease to determine the present value of its lease financing receivables. The components of lease income were as follows: (in thousands) For the Three For the Three Interest income on lease financing (1) $ 13,871 $ 11,949 (1) Included in Interest Income – Loans and leases in the Consolidated Statements of Income and Comprehensive Income. At March 31, 2021 and December 31, 2020, the carrying value of net investment in leases was $2.0 billion and $1.9 billion. The components of net investment in direct financing leases, including the carrying amount of the lease receivables, as well as the unguaranteed residual asset were as follows: (in thousands) March 31, December 31, Net investment in the lease – lease payments receivable $ 1,929,213 $ 1,771,097 Net investment in the lease – unguaranteed 80,349 80,093 Total lease payments $ 2,009,562 $ 1,851,190 The following table presents the remaining maturity analysis of the undiscounted lease receivables as of March 31, 2021, as well as the reconciliation to the total amount of receivables recognized in the Consolidated Statements of Condition: (in thousands) March 31, 2021 $ 24,349 2022 111,308 2023 342,220 2024 236,013 2025 427,495 Thereafter 868,177 Total lease payments 2,009,562 Plus: deferred origination costs 30,823 Less: unearned income (110,582 ) Total lease finance receivables, net $ 1,929,803 Lessee Arrangements The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most leases do not provide an implicit rate, the incremental borrowing rate (FHLB borrowing rate) is used in determining the present value of lease payments. The implicit rate is used when readily determinable. The operating lease ROU asset is measured at cost, which includes the initial measurement of the lease liability, prepaid rent and initial direct costs incurred by the Company, less incentives received. The lease terms include options to extend the lease when it is reasonably certain that we will exercise that option. For the vast majority of the Company’s leases, we are reasonably certain we will exercise our options to renew to the end of all renewal option periods. As such, substantially all of our future options to extend the leases have been included in the lease liability and ROU assets. Variable costs such as the proportionate share of actual costs for utilities, common area maintenance, property taxes and insurance are not included in the lease liability and are recognized in the period in which they are incurred. Amortization of the ROU assets was $4.7 million and $4.1 million for the three months ended March 31, 2021 and March 31, 2020, respectively. The Company has operating leases for corporate offices, branch locations, and certain equipment. The Company’s leases have remaining lease terms of one year to approximately 25 years, the vast majority of which include one or more options to extend the leases for up to five years resulting in lease terms up to 40 years. The components of lease expense were as follows: (in thousands) For the Three For the Three Operating lease cost $ 6,750 $ 6,759 Sublease income (28 ) (11 ) Total lease cost $ 6,722 $ 6,748 Supplemental cash flow information related to the leases for the following periods: (in thousands) For the Three For the Three Cash paid for amounts included in the measurement Operating cash flows from operating leases $ 6,750 $ 6,759 Supplemental balance sheet information related to the leases for the following periods: (in thousands, except lease term and discount rate) March 31, December 31, Operating Leases: Operating lease right-of-use 262,196 $ 266,864 Operating lease liabilities 262,169 266,846 Weighted average remaining lease term 16 years 16 years Weighted average discount rate 3.08 % 3.12 % Maturities of lease liabilities: March 31, (in thousands) 2021 $ 20,099 2022 25,893 2023 25,435 2024 24,764 2025 24,073 Thereafter 222,215 Total lease payments 342,479 Less: imputed interest (80,310 ) Total present value of lease liabilities $ 262,169	NOTE 7. LEASES Lessor Arrangements The Company is a lessor in the equipment finance business where it has executed direct financing leases (“lease finance receivables”). The Company produces lease finance receivables through a specialty finance subsidiary that participates in syndicated loans that are brought to them, and equipment loans and leases that are assigned to them, by a select group of nationally recognized sources, and are generally made to large corporate obligors, many of which are publicly traded, carry investment grade or near-investment grade ratings, and participate in stable industries nationwide. Lease finance receivables are carried at the aggregate of lease payments receivable plus the estimated residual value of the leased assets and any initial direct costs incurred to originate these leases, less unearned income, which is accreted to interest income over the lease term using the interest method. The standard leases are typically repayable on a level monthly basis with terms ranging from 24 to 120 months. At the end of the lease term, the lessee usually has the option to return the equipment, to renew the lease or purchase the equipment at the then fair market value (“FMV”) price. For leases with a FMV renewal/purchase option, the relevant residual value assumptions are based on the estimated value of the leased asset at the end of lease term, including evaluation of key factors, such as, the estimated remaining useful life of the leased asset, its historical secondary market value including history of the lessee executing the FMV option, overall credit evaluation and return provisions. The Company acquires the leased asset at fair market value and provides funding to the respective lessee at acquisition cost, less any volume or trade discounts, as applicable. Therefore, there is generally no selling profit or loss to recognize or defer at inception of a lease. The residual value component of a lease financing receivable represents the estimated fair value of the leased equipment at the end of the lease term. In establishing residual value estimates, the Company may rely on industry data, historical experience, and independent appraisals and, where appropriate, information regarding product life cycle, product upgrades and competing products. Upon expiration of a lease, residual assets are remarketed, resulting in an extension of the lease by the lessee, a lease to a new customer or purchase of the residual asset by the lessee or another party. Impairment of residual values arises if the expected fair value is less than the carrying amount. The Company assesses its net investment in lease financing receivables (including residual values) for impairment on an annual basis with any impairment losses recognized in accordance with the impairment guidance for financial instruments. As such, net investment in lease financing receivables may be reduced by an allowance for credit losses with changes recognized as provision expense. On certain lease financings, the Company obtains residual value insurance from third parties to manage and reduce the risk associated with the residual value of the leased assets. At December 31, 2020 and December 31, 2019, the carrying value of residual assets with third-party residual value insurance for at least a portion of the asset value was $70.6 million and $70.1 million, respectively. The Company uses the interest rate implicit in the lease to determine the present value of its lease financing receivables. The components of lease income were as follows: (in thousands) For the For the Interest income on lease financing (1) $ 52,279 $ 38,087 (1) Included in Interest Income – Loans and leases in the Consolidated Statements of Income and Comprehensive Income. At December 31, 2020 and December 31, 2019, the carrying value of net investment in leases was $1.9 billion and $1.4 billion. The components of net investment in direct financing leases, including the carrying amount of the lease receivables, as well as the unguaranteed residual asset were as follows: (in thousands) December 31, December 31, Net investment in the lease - lease payments receivable $ 1,771,097 $ 1,302,760 Net investment in the lease - unguaranteed residual assets 80,093 74,064 Total lease payments $ 1,851,190 $ 1,376,824 The following table presents the remaining maturity analysis of the undiscounted lease receivables as of December 31, 2020, as well as the reconciliation to the total amount of receivables recognized in the Consolidated Statements of Condition: (in thousands) December 31, 2021 $ 37,373 2022 171,549 2023 277,468 2024 111,378 2025 430,585 Thereafter 822,837 Total lease payments 1,851,190 Plus: deferred origination costs 32,008 Less: unearned income (116,366 ) Total lease finance receivables, net $ 1,766,832 Lessee Arrangements The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most leases do not provide an implicit rate, the incremental borrowing rate (FHLB borrowing rate) is used based on the information available at adoption date in determining the present value of lease payments. The implicit rate is used when readily determinable. The operating lease ROU asset is measured at cost, which includes the initial measurement of the lease liability, prepaid rent and initial direct costs incurred by the Company, less incentives received. The lease terms include options to extend the lease when it is reasonably certain that we will exercise that option. For the vast majority of the Company’s leases, we are reasonably certain we will exercise our options to renew to the end of all renewal option periods. As such, substantially all of our future options to extend the leases have been included in the lease liability and ROU assets. Variable costs such as the proportionate share of actual costs for utilities, common area maintenance, property taxes and insurance are not included in the lease liability and are recognized in the period in which they are incurred. Amortization of the ROU assets was $20.0 million and $38.4 million for the twelve months ended December 31, 2020 and 2019, respectively. Included in the twelve months ended December 31, 2019, was $11.7 million that was due to the closing of certain locations. The Company has operating leases for corporate offices, branch locations, and certain equipment. The Company’s leases have remaining lease terms of one year to approximately 25 years, the vast majority of which include one or more options to extend the leases for up to five years resulting in lease terms up to 40 years. During the twelve months ended December 31, 2019, the Company entered into a sale-lease back transaction with an unrelated third party with a lease term of 20 years (including renewal options). The sale of the branch property in Florida resulted in a gain of $7.9 million in 2019, which is included in “Other income” in the Consolidated Statements of Income and Comprehensive Income for the twelve months ended December 31, 2019. The components of lease expense were as follows: (in thousands) For the Twelve For the Twelve Operating lease cost $ 22,721 $ 28,695 Sublease income (68 ) (105 ) Total lease cost $ 22,653 $ 28,590 Supplemental cash flow information related to the leases for the following periods: (in thousands) For the Twelve For the Twelve Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 22,721 $ 28,695 Supplemental balance sheet information related to the leases for the following periods: (in thousands, except lease term and discount rate) December 31, December 31, Operating Leases: Operating lease right-of-use 266,864 $ 286,194 Operating lease liabilities 266,846 285,991 Weighted average remaining lease term 16 years 17 years Weighted average discount rate% 3.12 % 3.23 % (in thousands) December 31, Maturities of lease liabilities: 2021 $ 26,961 2022 25,994 2023 25,545 2024 24,884 2025 24,113 Thereafter 223,503 Total lease payments 351,000 Less: imputed interest (84,154 ) Total present value of lease liabilities $ 266,846

Deposits

Deposits	12 Months Ended
	Dec. 31, 2020
Banking And Thrift Disclosure [Abstract]
Deposits	NOTE 8: DEPOSITS The following table sets forth the weighted average interest rates for each type of deposit at December 31, 2020 and 2019: December 31, 2020 2019 (dollars in thousands) Amount Percent Weighted Amount Percent Weighted Interest-bearing checking and money market accounts $ 12,610,073 38.87 % 0.28 % $ 10,230,144 32.32 % 1.30 % Savings accounts 6,415,608 19.78 0.41 4,780,007 15.10 0.75 Certificates of deposit 10,330,680 31.85 0.83 14,214,858 44.90 2.30 Non-interest-bearing 3,080,452 9.50 — 2,432,123 7.68 — Total deposits $ 32,436,813 100.00 % 0.45 % $ 31,657,132 100.00 % 1.57 % At December 31, 2020 and 2019, the aggregate amount of deposits that had been reclassified as loan balances (i.e., overdrafts) was $2.3 million and $2.4 million, respectively. The scheduled maturities of certificates of deposit (“CDs”) at December 31, 2020 were as follows: (in thousands) 1 year or less $ 9,120,243 More than 1 year through 2 years 708,342 More than 2 years through 3 years 313,682 More than 3 years through 4 years 187,089 More than 4 years through 5 years 1,009 Over 5 years 315 Total CDs $ 10,330,680 The following table presents a summary of CDs in amounts of $100,000 or more by remaining term to maturity, at December 31, 2020: CDs of $100,000 or More Maturing Within (in thousands) 3 Months Over 3 to Over 6 to Over Total Total $ 2,548,901 $ 3,094,530 $ 717,291 $ 384,860 $ 6,745,582 Included in total deposits at both December 31, 2020 and 2019 were brokered deposits of $5.3 billion and $5.2 billion with weighted average interest rates of 0.08% and 1.94% at the respective year-ends. Brokered money market accounts represented $3.0 billion and $1.5 billion, respectively, of the December 31, 2020 and 2019 totals, and brokered interest-bearing checking accounts represented $1.3 billion and $1.2 billion, respectively. Brokered CDs represented $1.0 billion and $2.5 billion of brokered deposits at December 31, 2020 and 2019, respectively.

Borrowed Funds

Borrowed Funds	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Borrowed Funds	Note 7. Borrowed Funds The following table summarizes the Company’s borrowed funds at the dates indicated: (in thousands) March 31, December 31, Wholesale Borrowings: FHLB advances $ 14,302,661 $ 14,627,661 Repurchase agreements 800,000 800,000 Total wholesale borrowings $ 15,102,661 $ 15,427,661 Junior subordinated debentures 360,362 360,259 Subordinated notes 295,764 295,624 Total borrowed funds $ 15,758,787 $ 16,083,544 The following table summarizes the Company’s repurchase agreements accounted for as secured borrowings at March 31, 2021: Remaining Contractual Maturity of the Agreements (in thousands) Overnight and Up to 30–90 Days Greater than GSE obligations $ — $ — $ — $ 800,000 Subordinated Notes At March 31, 2021 and December 31, 2020, the Company had $295.8 million and $295.6 million, respectively, of fixed-to-floating Date of Original Issue Stated Interest (1) Original (dollars in thousands) Nov. 6, 2018 Nov. 6, 2028 5.90 % $ 300,000 (1) From and including the date of original issuance to, but excluding November 6, 2023, the Notes will bear interest at an initial rate of 5.90% per annum payable semi-annually. Unless redeemed, from and including November 6, 2023 to but excluding the maturity date, the interest rate will reset quarterly to an annual interest rate equal to the then-current three-month LIBOR rate plus 278 basis points payable quarterly. Junior Subordinated Debentures At March 31, 2021 and December 31, 2020, the Company had $360.4 million and $360.3 million, respectively, of outstanding junior subordinated deferrable interest debentures (“junior subordinated debentures”) held by statutory business trusts (the “Trusts”) that issued guaranteed capital securities. The Trusts are accounted for as unconsolidated subsidiaries, in accordance with GAAP. The proceeds of each issuance were invested in a series of junior subordinated debentures of the Company and the underlying assets of each statutory business trust are the relevant debentures. The Company has fully and unconditionally guaranteed the obligations under each trust’s capital securities to the extent set forth in a guarantee by the Company to each trust. The Trusts’ capital securities are each subject to mandatory redemption, in whole or in part, upon repayment of the debentures at their stated maturity or earlier redemption. The following junior subordinated debentures were outstanding at March 31, 2021: Issuer Interest Junior Capital Date of Stated First (dollars in thousands) New York Community Capital Trust V 6.00 % $ 146,436 $ 140,085 Nov. 4, 2002 Nov. 1, 2051 Nov. 4, 2007 (1) New York Community Capital Trust X 1.78 123,712 120,000 Dec. 14, 2006 Dec. 15, 2036 Dec. 15, 2011 (2) PennFed Capital Trust III 3.43 30,928 30,000 June 2, 2003 June 15, 2033 June 15, 2008 (2) New York Community Capital Trust XI 1.85 59,286 57,500 April 16, 2007 June 30, 2037 June 30, 2012 (2) Total junior subordinated debentures $ 360,362 $ 347,585 (1) Callable subject to certain conditions as described in the prospectus filed with the SEC on November 4, 2002. (2) Callable from this date forward.	NOTE 9: BORROWED FUNDS The following table summarizes the Company’s borrowed funds at December 31, 2020 and 2019: December 31, (in thousands) 2020 2019 Wholesale borrowings: FHLB advances $ 14,627,661 $ 13,102,661 Repurchase agreements 800,000 800,000 Total wholesale borrowings $ 15,427,661 $ 13,902,661 Junior subordinated debentures 360,259 359,866 Subordinated notes 295,624 295,066 Total borrowed funds $ 16,083,544 $ 14,557,593 Accrued interest on borrowed funds is included in “Other liabilities” in the Consolidated Statements of Condition and amounted to $19.3 million and $23.4 million, respectively, at December 31, 2020 and 2019. FHLB Advances The contractual maturities and the next call dates of FHLB advances outstanding at December 31, 2020 were as follows: Contractual Earlier of Contractual (dollars in thousands) Year Amount Weighted (1) Amount Weighted (1) 2021 $ 3,272,661 0.87 % $ 8,952,661 1.73 % 2022 550,000 1.31 2,150,000 1.43 2023 2,525,000 0.85 2,725,000 0.91 2024 800,000 0.53 800,000 0.53 2028 4,350,000 2.40 — — 2029 3,130,000 1.55 — — Total FHLB advances $ 14,627,661 1.47 $ 14,627,661 1.47 (1) Does not included the effect interest rate swap agreements. FHLB advances include both straight fixed-rate advances and advances under the FHLB convertible advance program, which gives the FHLB the option of either calling the advance after an initial lock-out one-time The Company had $2.3 billion of short-term FHLB advances at December 31, 2020. During the twelve months ended December 31, 2020, the average balance of short-term FHLB advances were $2.1 billion, with a weighted average interest rate of .72%, generating interest expense of $15.3 million. The Company had $1.0 billion of short-term FHLB advances at December 31, 2019. During the twelve months ended December 31, 2019, the average balance of short-term FHLB advances were $52.4 million, with a weighted average interest rate of 1.9%, generating interest expense of $1.0 million. There were no short-term advances at December 31, 2018. At December 31, 2020 and 2019, respectively, the Bank had unused lines of available credit with the FHLB of up to $7.3 billion and $7.9 billion. The Company had no overnight advances at December 31, 2020, and $100.0 million overnight FHLB advances at December 31, 2019. During the twelve months ended December 31, 2020, the average balance of overnight advances amounted to $2.0 million, with a weighted average interest rate of 1.2%, generating interest expense of $24,000. During the twelve months ended December 31, 2019, the average balances of overnight advances amounted to $3.1 million, with weighted average interest rates of 2.1%, generating interest expense of $66,000. Total FHLB advances generated interest expense of $245.7 million, $259.0 million, and $248.0 million, in the years ended December 31, 2020, 2019, and 2018, respectively. Repurchase Agreements The following table presents an analysis of the contractual maturities and next call dates of the Company’s outstanding repurchase agreements accounted for as secured borrowings at December 31, 2020: Contractual Maturity Earlier of Contractual (dollars in thousands) Year Amount Weighted Amount Weighted 2021 $ — — % $ 400,000 2.31 % 2022 — — 400,000 2.16 2028 300,000 2.37 — — 2029 500,000 2.16 — — $ 800,000 2.24 $ 800,000 2.24 The following table provides the contractual maturity and weighted average interest rate of repurchase agreements, and the amortized cost and fair value of the securities collateralizing the repurchase agreements, at December 31, 2020: Mortgage-Related and GSE Debentures and U.S. (dollars in thousands) Period of Maturity Amount Weighted Amortized Fair Value Amortized Fair Value Greater than 90 days $ 800,000 2.24 % $ 286,198 $ 304,261 $ 571,182 $ 573,344 The Company had no short-term repurchase agreements outstanding at December 31, 2020 or 2019. At December 31, 2020 and 2019, the accrued interest on repurchase agreements amounted to $1.7 million. The interest expense on repurchase agreements was $18.2 million, $17.7 million, and $6.8 million, in the years ended December 31, 2020, 2019, and 2018, respectively. Federal Funds Purchased There were no federal funds purchased outstanding at December 31, 2020 or 2019. In 2020 and 2019, respectively, the average balances of federal funds purchased were $179.9 million and $6.8 million, with weighted average interest rates of 0.49% and 1.7%. In 2018, the average balance of federal funds purchased amounted to $620,000 with a weighted average interest rate of 2.2%. The interest expense produced by federal funds purchased was $886,000, $118,000 and $14,000 for the years ended December 31, 2020, 2019 and 2018, respectively. Junior Subordinated Debentures At December 31, 2020 and 2019, the Company had $360.3 million and $359.9 million, respectively, of outstanding junior subordinated deferrable interest debentures (“junior subordinated debentures”) held by statutory business trusts (the “Trusts”) that issued guaranteed capital securities. The Trusts are accounted for as unconsolidated subsidiaries, in accordance with GAAP. The proceeds of each issuance were invested in a series of junior subordinated debentures of the Company and the underlying assets of each statutory business trust are the relevant debentures. The Company has fully and unconditionally guaranteed the obligations under each trust’s capital securities to the extent set forth in a guarantee by the Company to each trust. The Trusts’ capital securities are each subject to mandatory redemption, in whole or in part, upon repayment of the debentures at their stated maturity or earlier redemption. The following junior subordinated debentures were outstanding at December 31, 2020: Issuer Interest Junior Capital Date of Stated First Optional (dollars in thousands) New York Community Capital Trust V (BONUSESSM Units) 6.00 % $ 146,333 $ 139,982 Nov. 4, 2002 Nov. 1, 2051 Nov. 4, 2007 (1) New York Community Capital Trust X 1.82 123,712 120,000 Dec. 14, 2006 Dec. 15, 2036 Dec. 15, 2011 (2) PennFed Capital Trust III 3.47 30,928 30,000 June 2, 2003 June 15, 2033 June 15, 2008 (2) New York Community Capital Trust XI 1.89 59,286 57,500 April 16, 2007 June 30, 2037 June 30, 2012 (2) Total junior subordinated debentures $ 360,259 $ 347,482 (1) Callable subject to certain conditions as described in the prospectus filed with the SEC on November 4, 2002. (2) Callable from this date forward. The Bifurcated Option Note Unit SecuritiES SM non-callable five-year The gross proceeds of the BONUSES units totaled $275.0 million and were allocated between the capital security and the warrant comprising such units in proportion to their relative values at the time of issuance. The value assigned to the warrants, $92.4 million, was recorded as a component of additional “paid-in 49-year The other three trust preferred securities noted in the preceding table were formed for the purpose of issuing Company Obligated Mandatorily Redeemable Capital Securities of Subsidiary Trusts Holding Solely Junior Subordinated Debentures (collectively, the “Capital Securities”). Dividends on the Capital Securities are payable either quarterly or semi-annually and are deferrable, at the Company’s option, for up to five years. As of December 31, 2020, all dividends were current. Interest expense on junior subordinated debentures was $18.8 million, $22.4 million, and $21.7 million, respectively, for the years ended December 31, 2020, 2019, and 2018. Subordinated Notes At December 31, 2020 and 2019, the Company had $295.6 million and $295.1 million, respectively, of fixed-to-floating Date of Original Issue Stated Maturity Interest Rate (1) Original Issue (dollars in thousands) Nov. 6, 2018 Nov. 6, 2028 5.90 % $ 300,000 (1) From and including the date of original issuance to, but excluding November 6, 2023, the Notes will bear interest at an initial rate of 5.90% per annum payable semi-annually. Unless redeemed, from and including November 6, 2023 to but excluding the maturity date, the interest rate will reset quarterly to an annual interest rate equal to the then-current three-month LIBOR rate plus 278 basis point payable quarterly. The interest expense on subordinated notes amounted to $18.3 million for the years ended December 31, 2020 and 2019. The interest expense on subordinated notes amounted to $2.8 million for the year ended December 31, 2018

Federal, State And Local Taxes

Federal, State And Local Taxes	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Federal, State & Local Taxes	NOTE 10: FEDERAL, STATE, AND LOCAL TAXES The following table summarizes the components of the Company’s net deferred tax asset (liability) at December 31, 2020 and 2019: December 31, (in thousands) 2020 2019 Deferred Tax Assets: Allowance for credit losses on loans and leases $ 53,260 $ 40,584 Compensation and related benefit obligations 20,760 19,401 Non-accrual 672 624 Net operating loss carryforwards 5,682 19,750 Other 17,240 12,169 Gross deferred tax assets 97,614 92,528 Valuation allowance — — Deferred tax asset after valuation allowance $ 97,614 $ 92,528 Deferred Tax Liabilities: Amortizable intangibles $ (2,775 ) $ (2,480 ) Acquisition accounting and fair value adjustments on securities (including OTTI) (12,407 ) (9,742 ) Premises and equipment (6,385 ) (7,578 ) Prepaid pension cost (24,412 ) (22,739 ) Fair value adjustments on loans (92,340 ) (3,209 ) Leases (370,305 ) (237,429 ) Other (8,880 ) (10,782 ) Gross deferred tax liabilities $ (517,504 ) $ (293,959 ) Net deferred tax liability $ (419,890 ) $ (201,431 ) The deferred tax liability represents the anticipated federal, state, and local tax expenses or benefits that are expected to be realized in future years upon the utilization of the underlying tax attributes comprising said balances. The net deferred tax liability is included in “Other liabilities” in the Consolidated Statements of Condition at December 31, 2020 and 2019. At December 31, 2020, the Company had a New York City net operating loss (“NOL”) carry forward of $83.9 million, which is available to offset future federal taxable income. The NOL may be carried forward for 20 years to any future calendar tax year after 2020. At December 31, 2019, the Company had a federal NOL carryforward that was fully utilized during 2020. The Company has determined that all deductible temporary differences and net operating loss carryforwards are more likely than not to provide a benefit in reducing future federal, state, and local tax liabilities, as applicable. The Company has reached this determination based on its history of reporting positive taxable income in all relevant tax jurisdictions, the length of time available to utilize the net operating loss carryforwards, and the recognition of taxable income in future periods from taxable temporary differences. The following table summarizes the Company’s income tax expense for the years ended December 31, 2020, 2019, and 2018: December 31, (in thousands) 2020 2019 2018 Federal – current $ (147,691 ) $ 4,069 $ 89,187 State and local – current 5,044 23,382 22,868 Total current (142,647 ) 27,451 112,055 Federal – deferred 189,826 100,971 13,058 State and local – deferred 29,516 (158 ) 10,139 Total deferred 219,342 100,813 23,197 Income tax expense reported in net income 76,695 128,264 135,252 Income tax expense reported in stockholders’ equity related to: Securities available-for-sale 15,648 16,142 (32,162 ) Pension liability adjustments 293 5,033 4,897 Cash flow hedge (12,852 ) 333 — Non-credit — — 821 Adoption of ASU 2016-13 (3,972 ) — — Total income taxes $ 75,812 149,772 108,808 The following table presents a reconciliation of statutory federal income tax expense (benefit) to combined actual income tax expense (benefit) reported in net income for the years ended December 31, 2020, 2019, and 2018: December 31, (in thousands) 2020 2019 2018 Statutory federal income tax at 21%, 21% and 21%, respectively $ 123,439 $ 109,894 $ 117,111 State and local income taxes, net of federal income tax effect 27,303 18,346 24,451 Effect of tax law changes (73,103 ) — 1,625 Non-deductible 7,857 6,938 8,852 Effect of tax deductibility of ESOP (3,208 ) (3,163 ) (3,116 ) Non-taxable (6,726 ) (5,981 ) (5,957 ) Federal tax credits (1,290 ) (750 ) (531 ) Adjustments relating to prior tax years 634 373 (7,246 ) Other, net 1,789 2,607 63 Total income tax expense $ 76,695 $ 128,264 $ 135,252 GAAP requires that the impact of tax legislation be recognized in the period in which the law was enacted. The CARES Act was enacted on March 27, 2020 to provide relief related to the COVID-19 The Company invests in affordable housing projects through limited partnerships that generate federal Low Income Housing Tax Credits. The balances of these investments, which are included in “Other assets” in the Consolidated Statements of Condition, were $84.5 million and $57.1 million, respectively, at December 31, 2020 and 2019, and included commitments of $54.2 million and $29.1 million that are expected to be funded over the next three years. The Company elected to apply the proportional amortization method to these investments. Recognized in the determination of income tax (benefit) expense from operations for the years ended December 31, 2020, 2019, and 2018 were $7.5 million, $5.9 million, and $5.2 million, respectively, of affordable housing tax credits and other tax benefits, and an offsetting $6.2 million, $5.2 million, and $4.7 million, respectively, for the amortization of the related investments. No impairment losses were recognized in relation to these investments for the years ended December 31, 2020, 2019, and 2018. GAAP prescribes a recognition threshold and measurement attribute for use in connection with the obligation of a company to recognize, measure, present, and disclose in its financial statements uncertain tax positions that the Company has taken or expects to take on a tax return. As of December 31, 2020, the Company had $37.8 million of unrecognized gross tax benefits. Gross tax benefits do not reflect the federal tax effect associated with state tax amounts. The total amount of net unrecognized tax benefits at December 31, 2020 that would have affected the effective tax rate, if recognized, was $29.9 million. Interest and penalties (if any) related to the underpayment of income taxes are classified as a component of income tax expense in the Consolidated Statements of Income and Comprehensive Income. During the years ended December 31, 2020, 2019, and 2018, the Company recognized income tax expense attributed to interest and penalties of $2.8 million, $2.5 million, and $1.7 million, respectively. Accrued interest and penalties on tax liabilities were $18.4 million and $14.5 million, respectively, at December 31, 2020 and 2019. The following table summarizes changes in the liability for unrecognized gross tax benefits for the years ended December 31, 2020, 2019, and 2018: December 31, (in thousands) 2020 2019 2018 Uncertain tax positions at beginning of year $ 35,749 $ 33,357 $ 33,681 Additions for tax positions relating to current-year operations 830 925 — Additions for tax positions relating to prior tax years 1,547 2,036 1,660 Subtractions for tax positions relating to prior tax years (306 ) (569 ) (1,984 ) Reductions in balance due to settlements — — — Uncertain tax positions at end of year $ 37,820 $ 35,749 $ 33,357 The Company and its subsidiaries have filed tax returns in many states. The following are the more significant tax filings that are open for examination: • Federal tax filings for tax years 2017 through the present; • New York State tax filings for tax years 2010 through the present; • New York City tax filings for tax years 2011 through the present; and • New Jersey tax filings for tax years 2016 through the present. In addition to other state audits, the Company is currently under examination by the following taxing jurisdictions of significance to the Company: • New York State for the tax years 2010 through 2014; and • New York City for the tax years 2011 and 2014. It is reasonably possible that there will be developments within the next twelve months that would necessitate an adjustment to the balance of unrecognized tax benefits, including decreases of up to $21 million due to completion of tax authorities’ exams and the expiration of statutes of limitations. As a savings institution, the Bank is subject to a special federal tax provision regarding its frozen tax bad debt reserve. At December 31, 2020, the Bank’s federal tax bad debt base-year reserve was $61.5 million, with a related federal deferred tax liability of $12.9 million, which has not been recognized since the Bank does not expect that this reserve will become taxable in the foreseeable future. Events that would result in taxation of this reserve include redemptions of the Bank’s stock or certain excess distributions by the Bank to the Company.

Derivative and Hedging Activiti

Derivative and Hedging Activities	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative and Hedging Activities	Note 12. Derivative and Hedging Activities The Company’s derivative financial instruments consist of interest rate swaps. The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposure to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate and liquidity risks, primarily by managing the amount, sources, and duration of its assets and liabilities and, from time to time, the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Title VII of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the “Dodd-Frank Act”) requires all standardized derivatives, including most interest rate swaps, to be submitted for clearing to central counterparties to reduce counterparty risk. Two of the central counterparties are the Chicago Mercantile Exchange (“CME”) and the London Clearing House (“LCH”). As of March 31, 2021, all of the Company’s $4.3 billion notional derivative contracts were cleared on the LCH. Daily variation margin payments on derivatives cleared through the LCH are accounted for as legal settlement. For derivatives cleared through LCH, the net gain (loss) position includes the variation margin amounts as settlement of the derivative and not collateral against the fair value of the derivative, which includes accrued interest; therefore, those interest rate and derivative contracts the Company clears through the LCH are reported at a fair value of approximately zero at March 31, 2021. The Company’s exposure is limited to the value of the derivative contracts in a gain position less any collateral held and plus any collateral posted. When there is a net negative exposure, we consider our exposure to the counterparty to be zero. At March 31, 2021, the Company had a net negative exposure. Fair Value of Hedges of Interest Rate Risk The Company is exposed to changes in the fair value of certain of its fixed-rate assets due to changes in benchmark interest rates. The Company uses interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in the designated benchmark interest rate. Interest rate swaps designated as fair value hedges involve the payment of fixed-rate amounts to a counterparty in exchange for the Company receiving variable-rate payments over the life of the agreements without the exchange of the underlying notional amount. Such derivatives were used to hedge the changes in fair value of certain of its pools of prepayable fixed rate assets. For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in interest income. The Company has entered into an interest rate swap with a notional amount of $2.0 billion to hedge certain real estate loans. For the three months ended March 31, 2021, the floating rate received related to the net settlement of this interest rate swap was less than the fixed rate payments. As such, interest income from Loans and leases in the accompanying Consolidated Statements of Income and Comprehensive Income was decreased by $12.0 million for the three months ended March 31, 2021. For the three months ended March 31, 2020, the floating rate received related to the net settlement of this interest rate swap was less than the fixed rate payments. As such, interest income from Loans and leases in the accompanying Consolidated Statements of Income and Comprehensive Income was decreased by $3.9 million. As of March 31, 2021, the following amounts were recorded on the balance sheet related to cumulative basis adjustment for fair value hedges: (in thousands) March 31, 2021 Line Item in the Consolidated Statements of Condition in which the Hedge Carrying Cumulative Amount of Fair Value Hedging Adjustments Total loans and leases, net (1) $ 2,047,999 $ 47,999 (1) These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At March 31, 2021, the amortized cost basis of the closed portfolios used in these hedging relationships was $3.4 billion; the cumulative basis adjustments associated with these hedging relationships was $48.0 million; and the amount of the designated hedged items was $2.0 billion. As of December 31, 2020, the following amounts were recorded on the balance sheet related to cumulative basis adjustment for fair value hedges: (in thousands) December 31, 2020 Line Item in the Consolidated Statements of Condition in which the Hedge Carrying Cumulative Amount of Fair Value Hedging Adjustments Total loans and leases, net (1) $ 2,073,214 $ 73,214 (1) These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At December 31, 2020 the amortized cost basis of the closed portfolios used in these hedging relationships was $3.6 billion; the cumulative basis adjustments associated with these hedging relationships was $73.2 million; and the amount of the designated hedged items was $2.0 billion. The following table sets forth information regarding the Company’s derivative financial instruments at March 31, 2021 and December 31, 2020: Notional Other Other Derivatives designated as fair value hedging instruments: Interest rate swap $ 2,000,000 $ — $ — Total derivatives designated as fair value hedging instruments $ 2,000,000 $ — $ — The following table sets forth the effect of derivative instruments on the Consolidated Statements of Income and Comprehensive Income for the periods indicated. (in thousands) For the Three For the Three Derivative – interest rate swap: Interest income $ 25,215 $ (28,130 ) Hedged item – loans: Interest income $ (25,215 ) $ 28,130 Cash Flow Hedges of Interest Rate Risk The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. Interest rate swaps designated as cash flow hedges involve the receipt of amounts subject to variability caused by changes in interest rates from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Changes in the fair value of derivatives designated and that qualify as cash flow hedges are initially recorded in other comprehensive income and are subsequently reclassified into earnings in the period that the hedged transaction affects earnings. Interest rate swaps with notional amounts totaling $2.3 billion as of March 31, 2021 and December 31, 2020, were designated as cash flow hedges of certain FHLB borrowings. The following table summarizes information about the interest rate swaps designated as cash flow hedges at March 31, 2021 and December 31, 2020: (dollars in thousands) March 31, December 31, Notional amounts $ 2,250,000 $ 2,250,000 Cash collateral posted 35,109 45,532 Weighted average pay rates 1.27 % 1.27 % Weighted average receive rates 0.20 % 0.23 % Weighted average maturity 1.7 years 1.9 years The following table presents the effect of the Company’s cash flow derivative instruments on AOCL for the three months ended March 31, 2021 and 2020: (in thousands) For the Three For the Three Amount of gain (loss) recognized in AOCL $ 4,532 $ (49,285 ) Amount of gain (loss) reclassified from AOCL to interest expense 5,891 (645 ) Gains (losses) included in the Consolidated Statements of Income related to interest rate derivatives designated as cash flow hedges during the three months ended March 31, 2021 was $5.9 million. Amounts reported in AOCL related to derivatives will be reclassified to interest expense as interest payments are made on the Company’s variable-rate borrowings. During the next twelve months, the Company estimates that an additional $24.1 million will be reclassified to interest expense.	NOTE 11. DERIVATIVE AND HEDGING ACTIVITIES The Company’s derivative financial instruments consist of interest rate swaps. The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposure to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate and liquidity risks, primarily by managing the amount, sources, and duration of its assets and liabilities and, from time to time, the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Title VII of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the “Dodd-Frank Act”) requires all standardized derivatives, including most interest rate swaps, to be submitted for clearing to central counterparties to reduce counterparty risk. Two of the central counterparties are the Chicago Mercantile Exchange (“CME”) and the London Clearing House (“LCH”). As of December 31, 2020, all of the Company’s $4.3billion notional derivative contracts were cleared on the LCH. Daily variation margin payments on derivatives cleared through the LCH are accounted for as legal settlement. For derivatives cleared through LCH, the net gain (loss) position includes the variation margin amounts as settlement of the derivative and not collateral against the fair value of the derivative, which includes accrued interest; therefore, those interest rate and derivative contracts the Company clears through the LCH are reported at a fair value of approximately zero at December 31, 2020. The Company’s exposure is limited to the value of the derivative contracts in a gain position less any collateral held and plus any collateral posted. When there is a net negative exposure, we consider our exposure to the counterparty to be zero. At December 31, 2020, the Company had a net negative exposure. Fair Value of Hedges of Interest Rate Risk The Company is exposed to changes in the fair value of certain of its fixed-rate assets due to changes in interest rates. The Company uses interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in the designated benchmark interest rate. Interest rate swaps designated as fair value hedges involve the payment of fixed-rate amounts to a counterparty in exchange for the Company receiving variable-rate payments over the life of the agreements without the exchange of the underlying notional amount. Such derivatives were used to hedge the changes in fair value of certain of its pools of prepayable fixed rate assets. For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in interest income. The Company has entered into an interest rate swap with a notional amount of $2.0 billion to hedge certain real estate loans. For the twelve months ended December 31, 2020, the floating rate received related to the net settlement of this interest rate swap was less than the fixed rate payments. As such, interest income from Loans and Leases in the accompanying Consolidated Statements of Income and Comprehensive Income was decreased by $34.6 million for the twelve months ended December 31, 2020, respectively. For the twelve months ended December 31, 2019, the floating rate received related to the net settlement of this interest rate swap was less than the fixed rate payments. As such, interest income from Loans and Leases in the accompanying Consolidated Statements of Income and Comprehensive Income was decreased by $3.4 million for the twelve months ended December 31, 2019, respectively. As of December 31, 2020, the following amounts were recorded on the balance sheet related to cumulative basis adjustment for fair value hedges. (in thousands) December 31, 2020 December 31, 2019 Line Item in the Consolidated Statements of Carrying Cumulative Carrying Cumulative Total loans and leases, net (1) $ 2,073,214 $ 73,214 $ 2,053,483 $ 53,483 (1) These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At December 31, 2020, the amortized cost basis of the closed portfolios used in these hedging relationships was $3.6 billion; the cumulative basis adjustments associated with these hedging relationships was $73.2 million; and the amount of the designated hedged items was $2.0 billion. The following table sets forth information regarding the Company’s derivative financial instruments at December 31, 2020. December 31, 2020 Fair Value (in thousands) Notional Other Other Derivatives designated as fair value hedging instruments: Interest rate swap $ 2,000,000 $ — $ — Total derivatives designated as fair value hedging instruments $ 2,000,000 $ — $ — The following table sets forth the effect of derivative instruments on the Consolidated Statements of Income and Comprehensive Income for the periods indicated. (in thousands) For the Twelve For the Twelve Derivative – interest rate swap: Interest income $ (19,731 ) $ (53,483 ) Hedged item – loans: Interest income $ 19,731 $ 53,483 Cash Flow Hedges of Interest Rate Risk The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. Interest rate swaps designated as cash flow hedges involve the receipt of amounts subject to variability caused by changes in interest rates from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Changes in the fair value of derivatives designated and that qualify as cash flow hedges are initially recorded in other comprehensive income and are subsequently reclassified into earnings in the period that the hedged transaction affects Interest rate swaps with notional amounts totaling $2.3 billion and $800.0 million as of December 31, 2020 and December 31, 2019, respectively, were designated as cash flow hedges of certain FHLB borrowings. The following table summarizes information about the interest rate swaps designated as cash flow hedges at December 31, 2020 and December 31, 2019: (dollars in thousands) December 31, December 31, Notional amounts $ 2,250,000 $ 800,000 Cash collateral posted 45,532 1,185 Weighted average pay rates 1.27 % 1.62 % Weighted average receive rates 0.23 % 1.90 % Weighted average maturity 1.9 years 2.5 years The following table presents the effect of the Company’s cash flow derivative instruments on AOCL for the year ending December 31, 2020: (in thousands) For the Twelve For the Twelve Amount of (loss) gain recognized in AOCL $ (58,484 ) $ 1,340 Amount of reclassified from AOCL to interest expense 11,768 (154 )

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 12: COMMITMENTS AND CONTINGENCIES Pledged Assets The Company pledges securities to serve as collateral for its repurchase agreements, among other purposes. At December 31, 2020, the Company had pledged available for sale mortgage-related securities and other debt securities with carrying values of $898.3 million and $379.8 million, respectively. At December 31, 2019, the Company had pledged available for sale mortgage-related securities and other debt securities with carrying values of $651.3 million and $721.0 million, respectively. In addition, the Company had $33.5 billion and $32.6 billion of loans pledged to the FHLB-NY Loan Commitments and Letters of Credit At December 31, 2020 and 2019, the Company had commitments to originate loans, including unused lines of credit, of $2.5 billion and $2.0 billion, respectively. The majority of the outstanding loan commitments at those dates were expected to close within 90 days. In addition, the Company had commitments to originate letters of credit totaling $375.9 million and $509.9 million at December 31, 2020 and 2019. The following table summarizes the Company’s off-balance (in thousands) Mortgage Loan Commitments: Multi-family and commercial real estate $ 310,261 One-to-four 801 Acquisition, development, and construction 100,599 Total mortgage loan commitments $ 411,661 Other loan commitments 2,063,559 Total loan commitments $ 2,475,220 Commercial, performance stand-by, stand-by 375,876 Total commitments $ 2,851,096 Financial Guarantees The Company provides guarantees and indemnifications to its customers to enable them to complete a variety of business transactions and to enhance their credit standings. These guarantees are recorded at their respective fair values in “Other liabilities” in the Consolidated Statements of Condition. The Company deems the fair value of the guarantees to equal the consideration received. The following table summarizes the Company’s guarantees and indemnifications at December 31, 2020: (in thousands) Expires Within One Year Expires After One Year Total Maximum Financial stand-by $ 164,498 $ 50,724 $ 215,222 $ 354,225 Performance stand-by 3,351 — 3,351 3,351 Commercial letters of credit 3,860 1,038 4,898 18,300 Total letters of credit $ 171,709 $ 51,762 $ 223,471 $ 375,876 The maximum potential amount of future payments represents the notional amounts that could be funded under the guarantees and indemnifications if there were a total default by the guaranteed parties or if indemnification provisions were triggered, as applicable, without consideration of possible recoveries under recourse provisions or from collateral held or pledged. The Company collects fees upon the issuance of commercial and stand-by stand-by stand-by At December 31, 2020, the Company had commitments to purchase securities totaling $19.8 million. Legal Proceedings The Company is involved in various legal actions arising in the ordinary course of its business. All such actions in the aggregate involve amounts that are believed by management to be immaterial to the financial condition and results of operations of the Company.

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	NOTE 13: INTANGIBLE ASSETS Goodwill Goodwill is presumed to have an indefinite useful life and is tested for impairment, rather than amortized, at the reporting unit level, at least once a year. There was no change in goodwill during the year ended December 31, 2020. During the year ended December 31, 2019, goodwill was reduced by $9.8 million related to the sale of the Company’s wealth management business, Peter B. Cannell & Co. Goodwill totaled $2.4 billion at each of these dates.

Pension and Other Post-Retireme

Pension and Other Post-Retirement Benefits And Employee Benefits	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Retirement Benefits, Description [Abstract]
Pension and Other Post-Retirement Benefits And Employee Benefits	Note 8. Pension and Other Post-Retirement Benefits The following table sets forth certain disclosures for the Company’s pension and post-retirement plans for the periods indicated: For the Three Months Ended March 31, 2021 2020 (in thousands) Pension Post- Pension Post- Components of net periodic (credit) expense: (1) Interest cost $ 912 $ 56 $ 1,173 $ 82 Expected return on plan assets (4,016 ) — (3,876 ) — Amortization of prior-service liability — (62 ) — (62 ) Amortization of net actuarial loss 1,732 11 1,831 6 Net periodic (credit) expense $ (1,372 ) $ 5 $ (872 ) $ 26 (1) Amounts are included in G&A expense on the Consolidated Statements of Income and Comprehensive Income. The Company expects to contribute $915,000 to its post-retirement plan to pay premiums and claims for the fiscal year ending December 31, 2021. The Company does not expect to make any contributions to its pension plan in 2021.	NOTE 14: EMPLOYEE BENEFITS Retirement Plan The New York Community Bancorp, Inc. Retirement Plan (the “Retirement Plan”) covers substantially all employees who had attained minimum age, service, and employment status requirements prior to the date when the individual plans were frozen by the banks of origin. Once frozen, the individual plans ceased to accrue additional benefits, service, and compensation factors, and became closed to employees who would otherwise have met eligibility requirements after the “freeze” date. The following table sets forth certain information regarding the Retirement Plan as of the dates indicated: December 31, (in thousands) 2020 2019 Change in Benefit Obligation: Benefit obligation at beginning of year $ 159,896 $ 143,235 Interest cost 4,692 5,660 Actuarial loss (gain) 14,629 18,806 Annuity payments (6,510 ) (6,473 ) Settlements (575 ) (1,332 ) Benefit obligation at end of year $ 172,132 $ 159,896 Change in Plan Assets: Fair value of assets at beginning of year $ 242,558 $ 210,246 Actual return (loss) on plan assets 25,557 40,117 Contributions — — Annuity payments (6,510 ) (6,473 ) Settlements (575 ) (1,332 ) Fair value of assets at end of year $ 261,030 $ 242,558 Funded status (included in “Other assets”) $ 88,898 $ 82,662 Changes recognized in other comprehensive income for the year ended December 31: Amortization of prior service cost $ — $ — Amortization of actuarial loss (7,327 ) (10,035 ) Net actuarial (gain) loss arising during the year 4,577 (7,378 ) Total recognized in other comprehensive income for the year (pre-tax) $ (2,750 ) $ (17,413 ) Accumulated other comprehensive loss (pre-tax) Prior service cost $ — $ — Actuarial loss, net 73,017 75,767 Total accumulated other comprehensive loss (pre-tax) $ 73,017 $ 75,767 In 2021, an estimated $6.9 million of unrecognized net actuarial loss for the Retirement Plan will be amortized from AOCL into net periodic benefit cost. The comparable amount recognized as net periodic benefit cost in 2020 was $7.3 million. No prior service cost will be amortized in 2021 and none was amortized in 2020. The discount rates used to determine the benefit obligation at December 31, 2020 and 2019 were 2.2% and 3.0%, respectively. The discount rate reflects rates at which the benefit obligation could be effectively settled. To determine this rate, the Company considers rates of return on high-quality fixed-income investments that are currently available and are expected to be available during the period until the pension benefits are paid. The expected future payments are discounted based on a portfolio of high-quality rated bonds (AA or better) for which the Company relies on the Financial Times Stock Exchange (“FTSE”) Pension Liability Index that is published as of the measurement date. The components of net periodic pension (credit) expense were as follows for the years indicated: Years Ended December 31, (in thousands) 2020 2019 2018 Components of net periodic pension expense (credit): Interest cost $ 4,692 $ 5,660 $ 5,085 Expected return on plan assets (15,505 ) (13,933 ) (16,139 ) Amortization of net actuarial loss 7,327 10,035 7,179 Net periodic pension (credit) expense $ (3,486 ) $ 1,762 $ (3,875 ) The following table indicates the weighted average assumptions used in determining the net periodic benefit cost for the years indicated: Years Ended December 31, 2020 2019 2018 Discount rate 3.0 % 4.1 % 3.4 % Expected rate of return on plan assets 6.5 6.8 7.0 As of December 31, 2020, Retirement Plan assets were invested in two diversified investment portfolios of the Pentegra Retirement Trust (the “Trust”), a private placement investment fund. The Company (in this context, the “Plan Sponsor”) chooses the specific asset allocation for the Retirement Plan within the parameters set forth in the Trust’s Investment Policy Statement. The long-term investment objectives are to maintain the Retirement Plan’s assets at a level that will sufficiently cover the Plan Sponsor’s long-term obligations, and to generate a return on those assets that will meet or exceed the rate at which the Plan Sponsor’s long-term obligations will grow. The Retirement Plan allocates its assets in accordance with the following targets: • To hold 55% of its assets in equity securities via investment in the Trust’s Long-Term Growth—Equity (“LTGE”) Portfolio, a diversified portfolio that invests in a number of actively and passively managed equity mutual funds and collective trusts in order to gain exposure to both U.S. and non-U.S. • To hold 44% of its assets in intermediate-term investment-grade bonds via investment in the Long-Term Growth—Fixed Income (“LTGFI”) Portfolio, a diversified portfolio that invests in a number of fixed-income mutual funds and collective investment trusts, primarily including intermediate-term bond funds with a focus on U.S. investment grade securities and opportunistic allocations to below-investment grade and non-U.S. • To hold 1% in a cash equivalents portfolio for liquidity purposes. In addition, the Retirement Plan holds Company shares, the value of which is approximately equal to 12% of the assets that are held by the Trust. The LTGE and LTGFI portfolios are designed to provide long-term growth of equity and fixed-income assets with the objective of achieving an investment return in excess of the cost of funding the active life, deferred vesting, and all 30-year The following table presents information about the fair value measurements of the investments held by the Retirement Plan as of December 31, 2020: (in thousands) Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable (Level 2) Significant Unobservable Inputs (Level 3) Equity: Large-cap (1) $ 23,206 $ — $ 23,206 $ — Large-cap (2) 22,997 — 22,997 — Large-cap (3) 15,146 — 15,146 — Mid-cap (4) 4,509 — 4,509 — Mid-cap (5) 6,316 — 6,316 — Mid-cap (6) 5,113 — 5,113 — Small-cap (7) 3,307 — 3,307 — Small-cap (8) 8,674 — 8,674 — Small-cap (9) 3,400 — 3,400 — International equity (10) 32,248 — 32,248 — Fixed Income Funds: Fixed Income – U.S. Core (11) 74,523 — 74,523 — Intermediate duration (12) 24,953 — 24,953 — Equity Securities: Company common stock 31,401 31,401 — — Cash Equivalents: Money market * 5,237 2,321 2,916 — $261,030 $33,722 $227,308 $— * Includes cash equivalent investments in equity and fixed income strategies. (1) This category contains large-cap (2) This category seeks long-term capital appreciation by investing primarily in large growth companies based in the U.S. (3) This fund tracks the performance of the S&P 500 Index by purchasing the securities represented in the Index in approximately the same weightings as the Index. (4) This category employs an indexing investment approach designed to track the performance of the CRSP US Mid-Cap (5) This category employs an indexing investment approach designed to track the performance of the CRSP US Mid-Cap (6) This category seeks to track the performance of the S&P Midcap 400 Index. (7) This category consists of a selection of investments based on the Russell 2000 Value Index. (8) This category consists of a mutual fund invested in small cap growth companies along with a fund invested in a selection of investments based on the Russell 2000 Growth Index. (9) This category consists of a mutual fund investing in readily marketable securities of U.S. companies with market capitalizations within the smallest 10% of the market universe, or smaller than the 1000th largest US company. (10) This category invests primarily in medium to large non-US (11) This category currently includes equal investments in three mutual funds, two of which usually hold at least 80% of fund assets in investment grade fixed income securities, seeking to outperform the Barclays US Aggregate Bond Index while maintaining a similar duration to that index. The third fund targets investments of 50% or more in mortgage-backed securities guaranteed by the US government and its agencies. (12) This category consists of a mutual fund which invest in a diversified portfolio of high-quality bonds and other fixed income securities, including U.S. Government obligations, mortgage-related and asset backed securities, corporate and municipal bonds, CMOs, and other securities mostly rated A or better. Current Asset Allocation The asset allocations for the Retirement Plan as of December 31, 2020 and 2019 were as follows: At December 31, 2020 2019 Equity securities 60 % 58 % Debt securities 38 40 Cash equivalents 2 2 Total 100 % 100 % Determination of Long-Term Rate of Return The long-term rate of return on Retirement Plan assets assumption was based on historical returns earned by equities and fixed income securities, and adjusted to reflect expectations of future returns as applied to the Retirement Plan’s target allocation of asset classes. Equities and fixed income securities were assumed to earn long-term rates of return in the ranges of 6% to 8% and 3% to 5%, respectively, with an assumed long-term inflation rate of 2.5% reflected within these ranges. When these overall return expectations are applied to the Retirement Plan’s target allocations, the result is an expected rate of return of 5% to 7%. Expected Contributions The Company does not expect to contribute to the Retirement Plan in 2021. Expected Future Annuity Payments The following annuity payments, which reflect expected future service, as appropriate, are expected to be paid by the Retirement Plan during the years indicated: (in thousands) 2021 $ 7,995 2022 8,073 2023 8,060 2024 8,302 2025 8,567 2026 and thereafter 43,728 Total $ 84,725 Qualified Savings Plan The Company maintains a defined contribution qualified savings plan in which all full-time employees are able to participate after three months of service and having attained age 21. The Company instituted a safe harbor matching contribution program during the year ended December 31, 2020. These Company contributions totaled $5.7 million in 2020. The Company did not make any contributions in 2019. Post-Retirement Health and Welfare Benefits The Company offers certain post-retirement benefits, including medical, dental, and life insurance (the “Health & Welfare Plan”) to retired employees, depending on age and years of service at the time of retirement. The costs of such benefits are accrued during the years that an employee renders the necessary service. The Health & Welfare Plan is an unfunded plan and is not expected to hold assets for investment at any time. Any contributions made to the Health & Welfare Plan are used to immediately pay plan premiums and claims as they come due. The following table sets forth certain information regarding the Health & Welfare Plan as of the dates indicated: December 31, (in thousands) 2020 2019 Change in benefit obligation: Benefit obligation at beginning of year $ 11,898 $ 13,583 Interest cost 327 512 Actuarial gain 238 (1,233 ) Premiums and claims paid (614 ) (964 ) Benefit obligation at end of year $ 11,849 11,898 Change in plan assets: Fair value of assets at beginning of year $ — $ — Employer contribution 614 964 Premiums and claims paid (614 ) (964 ) Fair value of assets at end of year $ — $ — Funded status (included in “Other liabilities”) $ (11,849 ) (11,898 ) Changes recognized in other comprehensive income for the year ended December 31: Amortization of prior service cost $ 249 $ 249 Amortization of actuarial gain (25 ) (124 ) Net actuarial (gain) loss arising during the year 238 (1,234 ) Total recognized in other comprehensive income for the year (pre-tax) $ 462 $ (1,109 ) Accumulated other comprehensive loss (pre-tax) Prior service cost $ (287 ) $ (536 ) Actuarial loss, net 1,679 1,466 Total accumulated other comprehensive income (pre-tax) $ 1,392 $ 930 The discount rates used in the preceding table were 2.0% and 2.9%, respectively, at December 31, 2020 and 2019. The estimated net actuarial loss and the prior service liability that will be amortized from AOCL into net periodic benefit cost in 2021 are $46,000 and $249,000, respectively. The following table presents the components of net periodic benefit cost for the years indicated: Years Ended December 31, (in thousands) 2020 2019 2018 Components of Net Periodic Benefit Cost: Service cost $ — $ — $ — Interest cost 327 512 513 Amortization of past-service liability (249 ) (249 ) (249 ) Amortization of net actuarial loss 25 124 309 Net periodic benefit cost $ 103 $ 387 $ 573 The following table presents the weighted average assumptions used in determining the net periodic benefit cost for the years indicated: Years Ended December 31, 2020 2019 2018 Discount rate 2.9 % 3.9 % 3.3 % Current medical trend rate 6.5 6.5 6.5 Ultimate trend rate 5.0 5.0 5.0 Year when ultimate trend rate will be reached 2026 2025 2024 Expected Contributions The Company expects to contribute $915,000 to the Health & Welfare Plan to pay premiums and claims in the fiscal year ending December 31, 2021. Expected Future Payments for Premiums and Claims The following amounts are currently expected to be paid for premiums and claims during the years indicated under the Health & Welfare Plan: (in thousands) 2021 $ 915 2022 881 2023 851 2024 820 2025 789 2026 and thereafter 3,451 Total $ 7,707

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	Note 9. Stock-Based Compensation At March 31, 2021, the Company had a total of 8,481,554 shares available for grants as restricted stock, options, or other forms of related rights. The Company granted 3,029,949 shares of restricted stock, with an average fair value of $11.15 per share on the date of grant, during the three months ended March 31, 2021. During the three months ended March 31, 2020, the Company granted 2,387,645 shares of restricted stock, with an average fair value of $11.64 per share. The shares of restricted stock that were granted during the three months ended March 31, 2021 and 2020, vest over a on e The following table provides a summary of activity with regard to restricted stock awards in the three months ended March 31, 2021: Number of Weighted Average Unvested at beginning of year 6,228,048 $ 12.43 Granted 3,029,949 11.15 Vested (1,918,654 ) 13.21 Canceled (59,260 ) 11.65 Unvested at end of period 7,280,083 11.70 As of March 31, 2021, unrecognized compensation cost relating to unvested restricted stock totaled $77.6 million. This amount will be recognized over a remaining weighted average period of 3.6 years. The following table provides a summary of activity with regard to Performance-Based Restricted Stock Units (“PSUs”) in the three months ended March 31, 2021: Number of Performance Expected Outstanding at beginning of year 477,872 Granted 307,479 January 1, 2021 - December 31, 2023 March 31, 2024 Outstanding at end of period 785,351 PSUs are subject to adjustment or forfeiture, based upon the achievement by the Company of certain performance standards. Compensation and benefits expense related to PSUs is recognized using the fair value as of the date the units were approved, on a straight-line basis over the vesting period and totaled $586,000 and $407,000 for the three months ended March 31, 2021 and March 31, 2020, respectively. As of March 31, 2021, unrecognized compensation cost relating to unvested restricted stock totaled $6.3 million. This amount will be recognized over a remaining weighted average period of 2.1 years. As of March 31, 2021, the Company believes it is probable that the performance conditions will be met. The Company matches a portion of employee 401(k) plan contributions. Such expense totaled $1.7 million and $1.6 million for the three months ended March 31, 2021 and 2020, respectively.	NOTE 15: STOCK-RELATED BENEFIT PLANS New York Community Bank Employee Stock Ownership Plan All full-time employees who have attained 21 years of age and have completed twelve consecutive months of credited service are eligible to participate in the ESOP, with benefits vesting on a six-year In 2020, 2019, and 2018, the Company allocated 405,167, 349,356, and 529,531 shares, respectively, to participants in the ESOP. For the years ended December 31, 2020, 2019, and 2018, the Company recorded ESOP-related compensation expense of $4.3 million, $4.2 million, and $5.0 million, respectively. Supplemental Executive Retirement Plan The Bank has established a Supplemental Executive Retirement Plan (“SERP”), which provided additional unfunded, non-qualified paid-in Stock Based Compensation At December 31, 2020, the Company had a total of 11,913,461 shares available for grants as restricted stock, options, or other forms of related rights under the 2020 Incentive Plan, which was approved by the Company’s shareholders at its Annual Meeting on June 3, 2020. The Company granted 2,421,345 shares of restricted stock, with an average fair value of $11.61 per share on the date of grant, during the twelve months ended December 31, 2020. During 2019 and 2018, the Company granted 2,031,198 shares and 2,543,023 shares, respectively, of restricted stock, which had average fair values of $10.45 and $13.50 per share on the respective grant dates. The shares of restricted stock that were granted during the years ended December 31, 2020, 2019, and 2018 vest over a period of five years. Compensation and benefits expense related to the restricted stock grants is recognized on a straight-line basis over the vesting period and totaled $28.4 million, $30.9 million, and $36.3 million, respectively, for the years ended December 31, 2020, 2019, and 2018. The following table provides a summary of activity with regard to restricted stock awards in the year ended December 31, 2020: For the Year Ended Number of Weighted Unvested at beginning of year 6,516,101 $ 13.31 Granted 2,421,345 11.61 Vested (2,180,891 ) 14.06 Canceled (528,507 ) 12.88 Unvested at end of year 6,228,048 12.43 As of December 31, 2020, unrecognized compensation cost relating to unvested restricted stock totaled $52.5 million. This amount will be recognized over a remaining weighted average period of 2.8 years. In addition, the Company has granted a total of 477,872 Performance-Based Restricted Stock Units (“PSUs”). Included in this total are 446,181 shares granted during the twelve months ended December 31, 2020, which have a performance period of January 1, 2020 to December 31, 2022 and vest on April 1, 2023, subject to adjustment or forfeiture, based upon the achievement by the Company of certain performance standards. During the twelve months ended December 31, 2020, 386,983 shares were forfeited. The Company granted 418,674 PSUs during 2019, which have a performance period of January 1, 2019 to December 31, 2021 and vest on April 1, 2022, subject to adjustment or forfeiture, based upon the achievement by the Company of certain performance standards. Compensation and benefits expense related to PSUs is recognized using the fair value as of the date the units were approved, on a straight-line basis over the vesting period and totaled $1.0 million and $1.1 million for the twelve months ended December 31, 2020 and 2019, respectively. As of December 31, 2020, unrecognized compensation cost relating to unvested PSUs totaled $3.1 million. This amount will be recognized over a remaining weighted average period of 1.8 years. As of December 31, 2020, the Company believes it is probable that the performance conditions will be met.

Fair Value Measurements

Fair Value Measurements	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 10. Fair Value Measurements GAAP sets forth a definition of fair value, establishes a consistent framework for measuring fair value, and requires disclosure for each major asset and liability category measured at fair value on either a recurring or non-recurring • Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. • Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. • Level 3 – Inputs to the valuation methodology are significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants use in pricing an asset or liability. A financial instrument’s categorization within this valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following tables present assets and liabilities that were measured at fair value on a recurring basis as of March 31, 2021 and December 31, 2020, and that were included in the Company’s Consolidated Statements of Condition at those dates: Fair Value Measurements at March 31, 2021 (in thousands) Quoted Prices Significant Significant Netting Total Fair Assets: Mortgage-Related Debt Securities Available for Sale: GSE certificates $ — $ 1,209,318 $ — $ — $ 1,209,318 GSE CMOs — 1,986,270 — — 1,986,270 Total mortgage-related debt securities $ — $ 3,195,588 $ — $ — $ 3,195,588 Other Debt Securities Available for Sale: U. S. Treasury obligations $ 64,998 $ — $ — $ — $ 64,998 GSE debentures — 1,368,341 — — 1,368,341 Asset-backed securities — 520,773 — — 520,773 Municipal bonds — 26,011 — — 26,011 Corporate bonds — 882,070 — — 882,070 Foreign notes — 25,993 25,993 Capital trust notes — 94,131 — — 94,131 Total other debt securities $ 64,998 $ 2,917,319 $ — $ — $ 2,982,317 Total debt securities available for sale $ 64,998 $ 6,112,907 $ — $ — $ 6,177,905 Equity securities: Mutual funds — 15,801 — — 15,801 Total equity securities $ — $ 15,801 $ — $ — $ 15,801 Total securities $ 64,998 $ 6,128,708 $ — $ — $ 6,193,706 Th e A description of the methods and significant assumptions utilized in estimating the fair values of securities follows: Where quoted prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy. Level 1 securities include highly liquid government securities and exchange-traded securities. If quoted market prices are not available for a specific security, then fair values are estimated by using pricing models. These pricing models primarily use market-based or independently sourced market parameters as inputs, including, but not limited to, yield curves, interest rates, equity or debt prices, and credit spreads. In addition to observable market information, models incorporate transaction details such as maturity and cash flow assumptions. Securities valued in this manner would generally be classified within Level 2 of the valuation hierarchy, and primarily include such instruments as mortgage-related and corporate debt securities. Periodically, the Company uses fair values supplied by independent pricing services to corroborate the fair values derived from the pricing models. In addition, the Company reviews the fair values supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness. The Company challenges pricing service valuations that appear to be unusual or unexpected. While the Company believes its valuation methods are appropriate, and consistent with those of other market participants, the use of different methodologies or assumptions to determine the fair values of certain financial instruments could result in different estimates of fair values at a reporting date. Assets Measured at Fair Value on a Non-Recurring Certain assets are measured at fair value on a non-recurring non-recurring Fair Value Measurements at March 31, 2021 Using (in thousands) Quoted Prices in Significant Other Significant Total Fair Certain nonaccrual loans (1) $ — $ — $ 23,172 $ 23,172 Other assets (2) — — 10,583 10,583 Total $ — $ — $ 33,755 $ 33,755 (1) Represents the fair value of impaired loans, based on the value of the collateral. (2) Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets and equity investments without readily determinable fair values. These equity investments are classified as Level 3 due to the infrequency of the observable prices and/or the restrictions on the shares. Fair Value Measurements at December 31, 2020 Using (in thousands) Quoted Prices in Significant Other Significant Total Fair Certain nonaccrual loans (1) $ — $ — $ 41,066 $ 41,066 Other assets (2) — — 5,655 5,655 Total $ — $ — $ 46,721 $ 46,721 (1) Represents the fair value of impaired loans, based on the value of the collateral. (2) Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets and equity investments without readily determinable fair values. These equity investments are classified as Level 3 due to the infrequency of the observable prices and/or the restrictions on the shares. The fair values of collateral-dependent impaired loans are determined using various valuation techniques, including consideration of appraised values and other pertinent real estate and other market data. Other Fair Value Disclosures For the disclosure of fair value information about the Company’s on- off-balance Because assumptions are inherently subjective in nature, estimated fair values cannot be substantiated by comparison to independent market quotes. Furthermore, in many cases, the estimated fair values provided would not necessarily be realized in an immediate sale or settlement of such instruments. The following tables summarize the carrying values, estimated fair values, and fair value measurement levels of financial instruments that were not carried at fair value on the Company’s Consolidated Statements of Condition at March 31, 2021 and December 31, 2020: March 31, 2021 Fair Value Measurement Using (in thousands) Carrying Estimated Quoted Prices Significant Significant Financial Assets: Cash and cash equivalents $ 2,722,915 $ 2,722,915 $ 2,722,915 $ — $ — FHLB stock (1) 698,984 698,984 — 698,984 — Loans, net 43,068,816 42,433,118 — — 42,433,118 Financial Liabilities: Deposits $ 34,197,136 $ 34,215,071 $ 24,582,838 (2) $ 9,632,233 (3) $ — Borrowed funds 15,758,787 16,475,503 — 16,475,503 — (1) Carrying value and estimated fair value are at cost. (2) Interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing (3) Certificates of deposit. December 31, 2020 Fair Value Measurement Using (in thousands) Carrying Estimated Quoted Prices Significant Significant Financial Assets: Cash and cash equivalents $ 1,947,931 $ 1,947,931 $ 1,947,931 $ — $ — FHLB stock (1) 714,005 714,005 — 714,005 — Loans, net 42,806,691 42,376,214 — $ — 42,376,214 Financial Liabilities: Deposits $ 32,436,813 $ 32,466,013 $ 22,106,133 (2) $ 10,359,880 (3) $ — Borrowed funds 16,083,544 16,794,338 — 16,794,338 — (1) Carrying value and estimated fair value are at cost. (2) Interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing (3) Certificates of deposit. The methods and significant assumptions used to estimate fair values for the Company’s financial instruments follow: Cash and Cash Equivalents Cash and cash equivalents include cash and due from banks and federal funds sold. The estimated fair values of cash and cash equivalents are assumed to equal their carrying values, as these financial instruments are either due on demand or have short-term maturities. Securities If quoted market prices are not available for a specific security, then fair values are estimated by using pricing models, quoted prices of securities with similar characteristics, or discounted cash flows. These pricing models primarily use market-based or independently sourced market parameters as inputs, including, but not limited to, yield curves, interest rates, equity or debt prices, and credit spreads. In addition to observable market information, pricing models also incorporate transaction details such as maturities and cash flow assumptions. Federal Home Loan Bank Stock Ownership in equity securities of the FHLB-NY Loans The Company discloses the fair value of loans measured at amortized cost using an exit price notion. The Company determined the fair value on substantially all of its loans for disclosure purposes, on an individual loan basis. The discount rates reflect current market rates for loans with similar terms to borrowers having similar credit quality on an exit price basis. The estimated fair values of non-performing Deposits The fair values of deposit liabilities with no stated maturity (i.e., interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing Borrowed Funds The estimated fair value of borrowed funds is based either on bid quotations received from securities dealers or the discounted value of contractual cash flows with interest rates currently in effect for borrowed funds with similar maturities and structures. Off-Balance The fair values of commitments to extend credit and unadvanced lines of credit are estimated based on an analysis of the interest rates and fees currently charged to enter into similar transactions, considering the remaining terms of the commitments and the creditworthiness of the potential borrowers. The estimated fair values of such off-balance	NOTE 16: FAIR VALUE MEASUREMENTS GAAP sets forth a definition of fair value, establishes a consistent framework for measuring fair value, and requires disclosure for each major asset and liability category measured at fair value on either a recurring or non-recurring • Level 1 — Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. • Level 2 — Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. • Level 3 — Inputs to the valuation methodology are significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants use in pricing an asset or liability. A financial instrument’s categorization within this valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following tables present assets and liabilities that were measured at fair value on a recurring basis as of December 31, 2020 and 2019, and that were included in the Company’s Consolidated Statements of Condition at those dates: Fair Value Measurements at December 31, 2020 (in thousands) Quoted Significant Significant Netting Total Assets: Mortgage-related Debt Securities Available for Sale: GSE certificates $ — $ 1,209,610 $ — $ — $ 1,209,610 GSE CMOs — 1,828,715 — — 1,828,715 Total mortgage-related debt securities $ — $ 3,038,325 $ — $ — $ 3,038,325 Other Debt Securities Available for Sale: U. S. Treasury obligations $ 64,985 $ — $ — $ — $ 64,985 GSE debentures — 1,158,302 — — 1,158,302 Asset-backed securities — 527,099 — — 527,099 Municipal bonds — 26,311 — — 26,311 Corporate bonds — 882,226 — — 882,226 Foreign notes — 25,538 — — 25,538 Capital trust notes — 90,547 — — 90,547 Total other debt securities $ 64,985 $ 2,710,023 $ — $ — $ 2,775,008 Total debt securities available for sale $ 64,985 $ 5,748,348 $ — $ — $ 5,813,333 Equity securities: — — Preferred stock $ 15,493 $ — $ — $ — $ 15,493 Mutual funds — 16,083 — — 16,083 Total equity securities $ 15,493 $ 16,083 $ — $ — $ 31,576 Total securities $ 80,478 $ 5,764,431 $ — $ — $ 5,844,909 Fair Value Measurements at December 31, 2019 (in thousands) Quoted Significant Significant Netting Total Assets: Mortgage-Related Debt Securities Available for Sale: GSE certificates $ — $ 1,552,623 $ — $ — $ 1,552,623 GSE CMOs — 1,801,112 — — 1,801,112 Total mortgage-related debt securities $ — $ 3,353,735 $ — $ — $ 3,353,735 Other Debt Securities Available for Sale: U.S. Treasury obligations $ 41,839 $ — $ — $ — $ 41,839 GSE debentures — 1,094,240 — — 1,094,240 Asset-backed securities — 373,254 — — 373,254 Municipal bonds — 26,892 — — 26,892 Corporate bonds — 867,182 — — 867,182 Capital trust notes — 95,915 — — 95,915 Total other debt securities $ 41,839 $ 2,457,483 $ — $ — $ 2,499,322 Total debt securities available for sale $ 41,839 $ 5,811,218 $ — $ — $ 5,853,057 Equity securities: — — Preferred stock $ 15,414 $ — $ — $ — $ 15,414 Mutual funds and common stock — 17,416 — — 17,416 Total equity securities $ 15,414 $ 17,416 $ — $ — $ 32,830 Total securities $ 57,253 $ 5,828,634 $ — $ — $ 5,885,887 The Company reviews and updates the fair value hierarchy classifications for its assets on a quarterly basis. Changes from one quarter to the next that are related to the observability of inputs for a fair value measurement may result in a reclassification from one hierarchy level to another. A description of the methods and significant assumptions utilized in estimating the fair values of securities follows: Where quoted prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy. Level 1 securities include highly liquid government securities and exchange-traded securities. If quoted market prices are not available for a specific security, then fair values are estimated by using pricing models. These pricing models primarily use market-based or independently sourced market parameters as inputs, including, but not limited to, yield curves, interest rates, equity or debt prices, and credit spreads. In addition to observable market information, models incorporate transaction details such as maturity and cash flow assumptions. Securities valued in this manner would generally be classified within Level 2 of the valuation hierarchy, and primarily include such instruments as mortgage-related and corporate debt securities. Periodically, the Company uses fair values supplied by independent pricing services to corroborate the fair values derived from the pricing models. In addition, the Company reviews the fair values supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness. The Company challenges pricing service valuations that appear to be unusual or unexpected. While the Company believes its valuation methods are appropriate, and consistent with those of other market participants, the use of different methodologies or assumptions to determine the fair values of certain financial instruments could result in different estimates of fair values at a reporting date. Fair Value Option Gains and Losses Included in Income for Assets Where the Fair Value Option Has Been Elected The assets accounted for under the fair value option are initially measured at fair value. Gains and losses from the initial measurement and subsequent changes in fair value are recognized in earnings. The following table presents the changes in fair value related to initial measurement, and the subsequent changes in fair value included in earnings, for MSRs for the periods indicated: (Loss) Gain Included in Mortgage Banking (1) For the Twelve Months Ended December 31, (in thousands) 2020 2019 2018 Loans held for sale $ — $ — $ — Mortgage servicing rights — — (224 ) Total loss $ — $ — $ (224 ) (1) Included in “Non-interest Assets Measured at Fair Value on a Non-Recurring Certain assets are measured at fair value on a non-recurring non-recurring Fair Value Measurements at December 31, 2020 Using (in thousands) Quoted Prices Significant Significant Total Fair Certain loans (1) $ — $ — $ 41,066 $ 41,066 Other assets (2) — — 5,655 5,655 Total $ — $ — $ 46,721 $ 46,721 (1) Represents the fair value of certain loans individually assessed for impairment, based on the value of the collateral. (2) Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets and equity securities without readily determinable fair values. These equity securities are classified as Level 3 due to the infrequency of the observable prices and/or the restrictions on the shares. Fair Value Measurements at December 31, 2019 Using (in thousands) Quoted Prices Significant Significant Total Fair Certain impaired loans (1) $ — $ — $ 42,767 $ 42,767 Other assets (2) — — 1,481 1,481 Total $ — $ — $ 44,248 $ 44,248 (1) Represents the fair value of impaired loans, based on the value of the collateral. (2) Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets. The fair values of collateral-dependent impaired loans are determined using various valuation techniques, including consideration of appraised values and other pertinent real estate and other market data. Other Fair Value Disclosures For the disclosure of fair value information about the Company’s on- off-balance Because assumptions are inherently subjective in nature, estimated fair values cannot be substantiated by comparison to independent market quotes. Furthermore, in many cases, the estimated fair values provided would not necessarily be realized in an immediate sale or settlement of such instruments. The following tables summarize the carrying values, estimated fair values, and fair value measurement levels of financial instruments that were not carried at fair value on the Company’s Consolidated Statements of Condition at December 31, 2020 and 2019: December 31, 2020 Fair Value Measurement Using (in thousands) Carrying Value Estimated Quoted Prices Significant Significant Financial Assets: Cash and cash equivalents $ 1,947,931 $ 1,947,931 $ 1,947,931 $ — $ — FHLB stock (1) 714,005 714,005 — 714,005 — Loans and leases, net 42,806,691 42,376,214 — — 42,376,214 Financial Liabilities: Deposits $ 32,436,813 $ 32,466,013 $ 22,106,133 (2) $ 10,359,880 (3) $ — Borrowed funds 16,083,544 16,794,338 — 16,794,338 — (1) Carrying value and estimated fair value are at cost. (2) Interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing (3) Certificates of deposit. December 31, 2019 Fair Value Measurement Using (in thousands) Carrying Estimated Quoted Prices Significant Significant Financial Assets: Cash and cash equivalents $ 741,870 $ 741,870 $ 741,870 $ — $ — FHLB stock (1) 647,562 647,562 — 647,562 — Loans and leases, net 41,746,517 41,699,929 — — 41,699,929 Financial Liabilities: Deposits $ 31,657,132 $ 31,713,945 $ 17,442,274 (2) $ 14,271,671 (3) $ — Borrowed funds 14,557,593 14,882,776 — 14,882,776 — (1) Carrying value and estimated fair value are at cost. (2) Interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing (3) Certificates of deposit. The methods and significant assumptions used to estimate fair values for the Company’s financial instruments follow: Cash and Cash Equivalents Cash and cash equivalents include cash and due from banks and federal funds sold. The estimated fair values of cash and cash equivalents are assumed to equal their carrying values, as these financial instruments are either due on demand or have short-term maturities. Securities If quoted market prices are not available for a specific security, then fair values are estimated by using pricing models, quoted prices of securities with similar characteristics, or discounted cash flows. These pricing models primarily use market-based or independently sourced market parameters as inputs, including, but not limited to, yield curves, interest rates, equity or debt prices, and credit spreads. In addition to observable market information, pricing models also incorporate transaction details such as maturities and cash flow assumptions. Federal Home Loan Bank Stock Ownership in equity securities of the FHLB is generally restricted and there is no established liquid market for their resale. The carrying amount approximates the fair value. Loans The Company discloses the fair value of loans measured at amortized cost using an exit price notion. The Company determined the fair value on substantially all of its loans for disclosure purposes, on an individual loan basis. The discount rates reflect current market rates for loans with similar terms to borrowers having similar credit quality on an exit price basis. The estimated fair values of non-performing Deposits The fair values of deposit liabilities with no stated maturity (i.e., interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing Borrowed Funds The estimated fair value of borrowed funds is based either on bid quotations received from securities dealers or the discounted value of contractual cash flows with interest rates currently in effect for borrowed funds with similar maturities and structures. Off-Balance The fair values of commitments to extend credit and unadvanced lines of credit are estimated based on an analysis of the interest rates and fees currently charged to enter into similar transactions, considering the remaining terms of the commitments and the creditworthiness of the potential borrowers. The estimated fair values of such off-balance

Dividend Restrictions

Dividend Restrictions	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Dividend Restrictions	NOTE 17: DIVIDEND RESTRICTIONS The Parent Company is a separate legal entity from the Bank and must provide for its own liquidity. In addition to operating expenses and any share repurchases, the Parent Company is responsible for paying any dividends declared to the Company’s shareholders. As a Delaware corporation, the Parent Company is able to pay dividends either from surplus or, in case there is no surplus, from net profits for the fiscal year in which the dividend is declared and/or the preceding fiscal year. Various legal restrictions limit the extent to which the Company’s subsidiary bank can supply funds to the Parent Company and its non-bank paid-in

Parent Company Only Financial I

Parent Company Only Financial Information	12 Months Ended
	Dec. 31, 2020
Condensed Financial Information Disclosure [Abstract]
Parent Company Only Financial Information	NOTE 18: PARENT COMPANY-ONLY FINANCIAL INFORMATIO N The following tables present the condensed financial statements for New York Community Bancorp, Inc. (Parent Company only): Condensed Statements of Condition December 31, (in thousands) 2020 2019 ASSETS: Cash and cash equivalents $ 151,205 $ 183,063 Investments in subsidiaries 7,333,764 7,169,066 Receivables from subsidiaries — 2,249 Other assets 23,342 23,338 Total assets $ 7,508,311 $ 7,377,716 LIABILITIES AND STOCKHOLDERS’ EQUITY: Junior subordinated debentures $ 360,259 $ 359,866 Subordinated notes 295,624 295,066 Other liabilities 10,784 11,090 Total liabilities 666,667 666,022 Stockholders’ equity 6,841,644 6,711,694 Total liabilities and stockholders’ equity $ 7,508,311 $ 7,377,716 Condensed Statements of Income Years Ended December 31, (in thousands) 2020 2019 2018 Interest income $ 293 $ 668 $ 500 Dividends received from subsidiaries 380,000 380,000 380,000 Other income 582 716 793 Gross income 380,875 381,384 381,293 Operating expenses 51,730 49,926 59,372 Income before income tax benefit and equity in underdistributed earnings of subsidiaries 329,145 331,458 321,921 Income tax benefit 14,163 13,669 16,616 Income before equity in underdistributed earnings of subsidiaries 343,308 345,127 338,537 Equity in underdistributed earnings of subsidiaries 167,801 49,916 83,880 Net income $ 511,109 $ 395,043 $ 422,417 Condensed Statements of Cash Flows Years Ended December 31, (in thousands) 2020 2019 2018 CASH FLOWS FROM OPERATING ACTIVITIES: Net income $ 511,109 $ 395,043 $ 422,417 Change in other assets (4 ) 386 256 Change in other liabilities (306 ) (2,608 ) (1,152 ) Other, net 30,352 32,776 36,677 Equity in underdistributed earnings of subsidiaries (167,801 ) (49,916 ) (83,880 ) Net cash provided by operating activities 373,350 375,681 374,318 CASH FLOWS FROM INVESTING ACTIVITIES: Change in receivable from subsidiaries, net 2,249 4,206 (1,705 ) Net cash provided by (used in) investing activities 2,249 4,206 (1,705 ) CASH FLOWS FROM FINANCING ACTIVITIES: Treasury stock repurchased (59,022 ) (75,220 ) (163,249 ) Cash dividends paid on common and preferred stock (348,435 ) (350,222 ) (365,889 ) Proceeds from issuance of subordinated notes — — 294,607 Net cash used in financing activities (407,457 ) (425,442 ) (234,531 ) Net (decrease) increase in cash and cash equivalents (31,858 ) (45,555 ) 138,082 Cash and cash equivalents at beginning of year 183,063 228,618 90,536 Cash and cash equivalents at end of year $ 151,205 $ 183,063 $ 228,618

Capital

Capital	12 Months Ended
	Dec. 31, 2020
Banking Regulation, Total Capital [Abstract]
Capital	NOTE 19: CAPITAL The Company is subject to examination, regulation, and periodic reporting under the Bank Holding Company Act of 1956, as amended, which is administered by the FRB. The FRB has adopted capital adequacy guidelines for bank holding companies (on a consolidated basis) that are substantially similar to those of the FDIC for the Bank. The following tables present the regulatory capital ratios for the Company at December 31, 2020 and 2019, in comparison with the minimum amounts and ratios required by the FRB for capital adequacy purposes: Risk-Based Capital At December 31, 2020 Common Equity Tier 1 Total Leverage Capital (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio Total capital $ 3,962,399 9.72 % $ 4,465,239 10.95 % $ 5,289,611 12.97 % $ 4,465,239 8.52 % Minimum for capital adequacy purposes 1,834,858 4.50 2,446,478 6.00 3,261,970 8.00 2,095,846 4.00 Excess $ 2,127,541 5.22 % $ 2,018,761 4.95 % $ 2,027,641 4.97 % $ 2,369,393 4.52 % Risk-Based Capital At December 31, 2019 Common Equity Tier 1 Total Leverage Capital (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio Total capital $ 3,818,311 9.91 % $ 4,321,151 11.22 % $ 5,111,990 13.27 % $ 4,321,151 8.66 % Minimum for capital adequacy purposes 1,733,826 4.50 2,311,768 6.00 3,082,358 8.00 1,996,966 4.00 Excess $ 2,084,485 5.41 % $ 2,009,383 5.22 % $ 2,029,632 5.27 % $ 2,324,185 4.66 % At December 31, 2020, our total risk-based capital ratio exceeded the minimum requirement for capital adequacy purposes by 497 basis points and the fully phased-in The Bank is subject to regulation, examination, and supervision by the NYSDFS and the FDIC (the “Regulators”). The Bank is also governed by numerous federal and state laws and regulations, including the FDIC Improvement Act of 1991, which established five categories of capital adequacy ranging from “well capitalized” to “critically undercapitalized.” Such classifications are used by the FDIC to determine various matters, including prompt corrective action and each institution’s FDIC deposit insurance premium assessments. Capital amounts and classifications are also subject to the Regulators’ qualitative judgments about the components of capital and risk weightings, among other factors. The quantitative measures established to ensure capital adequacy require that banks maintain minimum amounts and ratios of leverage capital to average assets and of common equity tier 1 capital, tier 1 capital, and total capital to risk-weighted assets (as such measures are defined in the regulations). At December 31, 2020, the Bank exceeded all the capital adequacy requirements to which they were subject. As of December 31, 2020, the Company and the Bank are categorized as “well capitalized” under the regulatory framework for prompt corrective action. To be categorized as well capitalized, a bank must maintain a minimum common equity tier 1 risk-based capital ratio of 6.50%; a minimum tier 1 risk-based capital ratio of 8.00%; a minimum total risk-based capital ratio of 10.00%; and a minimum leverage capital ratio of 5.00%. In the opinion of management, no conditions or events have transpired since December 31, 2020 to change these capital adequacy classifications. The following tables present the actual capital amounts and ratios for the Bank at December 31, 2020 and 2019 in comparison to the minimum amounts and ratios required for capital adequacy purposes. Risk-Based Capital At December 31, 2020 Common Tier 1 Total Leverage (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio Total capital $ 4,964,055 12.18 % $ 4,964,055 12.18 % $ 5,145,321 12.62 % $ 4,964,055 9.48 % Minimum for capital adequacy purposes 1,834,112 4.50 2,445,483 6.00 3,260,643 8.00 2,095,175 4.00 Excess $ 3,129,943 7.68 % $ 2,518,572 6.18 % $ 1,884,678 4.62 % $ 2,868,880 5.48 % Risk-Based Capital At December 31, 2019 Common Tier 1 Total Leverage (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio Total capital $ 4,785,217 12.42 % $ 4,785,217 12.42 % $ 4,933,900 12.81 % $ 4,785,217 9.59 % Minimum for capital adequacy purposes 1,733,085 4.50 2,310,780 6.00 3,081,040 8.00 1,996,288 4.00 Excess $ 3,052,132 7.92 % $ 2,474,437 6.42 % $ 1,852,860 4.81 % $ 2,788,929 5.59 % Preferred Stock On March 17, 2017, the Company issued 20,600,000 depositary shares, each representing a 1/40th interest in a share of the Company’s Fixed-to-Floating Treasury Stock Repurchases On October 23, 2018, the Board of Directors approved the repurchase of up to $300 million of the Company’s outstanding common stock. As of December 31, 2020, the Company has repurchased a total of 28.9 million shares at an average price of $9.63 or an aggregate purchase of $278.1 million. During the years ended December 31, 2020 and 2019, the Company repurchased 5.0 million and 7.1 million shares, at a cost of $50.2 million and $67.1 million, respectively.

Subsequent Event

Subsequent Event	3 Months Ended
	Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Event	Note 13. Subsequent Event Pending Acquisition of Flagstar Bancorp, Inc. On April 26, 2021, the Company announced that it had entered into a definitive merger agreement under which we would acquire Flagstar Bancorp, Inc. (“Flagstar”) in a 100% stock transaction valued at the time at $2.6 billion. Under terms of the agreement, which was unanimously approved by the Boards of Directors of both companies, Flagstar shareholders will receive 4.0151 shares of New York Community common stock for each Flagstar share they own. Following completion of the transaction, New York Community shareholders are expected to own 68% of the combined company, while Flagstar shareholders are expected to own 32% of the combined company. The new company will have over $87 billion in total assets, operate nearly 400 traditional branches in nine states, and 87 retail home lending offices across a 28-state

Organization, Basis of Presen_2

Organization, Basis of Presentation, and Impact of Recent Accounting Pronouncements (Policies)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Organization	Organization New York Community Bancorp, Inc. (on a stand-alone basis, the “Parent Company” or, collectively with its subsidiaries, the “Company”) was organized under Delaware law on July 20, 1993 and is the holding company for New York Community Bank (hereinafter referred to as the “Bank”). Founded on April 14, 1859 and formerly known as Queens County Savings Bank, the Bank converted from a state-chartered mutual savings bank to the capital stock form of ownership on November 23, 1993, at which date the Company issued its initial offering of common stock (par value: $0.01 per share) at a price of $25.00 per share ($0.93 per share on a split-adjusted basis, reflecting the impact of nine stock splits between 1994 and 2004). The Bank currently operates 237 branches, 19 of which operate directly under the Community Bank name. The remaining 218 Community Bank branches operate through eight divisional banks: Queens County Savings Bank, Roslyn Savings Bank, Richmond County Savings Bank, Roosevelt Savings Bank, and Atlantic Bank in New York; Garden State Community Bank in New Jersey; AmTrust Bank in Florida and Arizona; and Ohio Savings Bank in Ohio.	Organization New York Community Bancorp, Inc. (on a stand-alone basis, the “Parent Company” or, collectively with its subsidiaries, the “Company”) was organized under Delaware law on July 20, 1993 and is the holding company for New York Community Bank (hereinafter referred to as the “Bank”). Founded on April 14, 1859 and formerly known as Queens County Savings Bank, the Bank converted from a state-chartered mutual savings bank to the capital stock form of ownership on November 23, 1993, at which date the Company issued its initial offering of common stock (par value: $0.01 per share) at a price of $25.00 per share ($0.93 per share on a split-adjusted basis, reflecting the impact of nine stock splits between 1994 and 2004). The Company currently operates 237 branches through eight local divisions, each with a history of service and strength: Queens County Savings Bank, Roslyn Savings Bank, Richmond County Savings Bank, Roosevelt Savings Bank, and Atlantic Bank in New York; Garden State Community Bank in New Jersey; Ohio Savings Bank in Ohio; and AmTrust Bank in Arizona and Florida.
Basis of Presentation	Basis of Presentation The following is a description of the significant accounting and reporting policies that the Company and its subsidiaries follow in preparing and presenting their consolidated financial statements, which conform to U.S. generally accepted accounting principles (“GAAP”) and to general practices within the banking industry. The preparation of financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Estimates that are particularly susceptible to change in the near term are used in connection with the determination of the allowance for credit losses and the evaluation of goodwill for impairment. The accompanying consolidated financial statements include the accounts of the Company and other entities in which the Company has a controlling financial interest. All inter-company accounts and transactions are eliminated in consolidation. The Company currently has certain unconsolidated subsidiaries in the form of wholly-owned statutory business trusts, which were formed to issue guaranteed capital securities. See Note 7, Borrowed Funds, for additional information regarding these trusts. When necessary, certain reclassifications have been made to prior-year amounts to conform to the current-year presentation.	Basis of Presentation The following is a description of the significant accounting and reporting policies that the Company and its subsidiaries follow in preparing and presenting their consolidated financial statements, which conform to U.S. generally accepted accounting principles (“GAAP”) and to general practices within the banking industry. The preparation of financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Estimates that are used in connection with the determination of the allowance for loan and lease losses and the evaluation of goodwill for impairment, The accompanying consolidated financial statements include the accounts of the Company and other entities in which the Company has a controlling financial interest. All inter-company accounts and transactions are eliminated in consolidation. The Company currently has certain unconsolidated subsidiaries in the form of wholly-owned statutory business trusts, which were formed to issue guaranteed capital securities. See Note 9, “Borrowed Funds,” for additional information regarding these trusts. When necessary, certain reclassifications have been made to prior-year amounts to conform to the current-year presentation.
Recently Adopted Accounting Standards	Impact of Recent Accounting Pronouncements Recently Adopted Accounting Standards The Company adopted ASU No. 2020-04 The Company adopted ASU No. 2016-13, No. 2016-13”) No. 2016-13 available-for-sale No. 2016-13 and, instead, requires an entity to reflect its current estimate of all expected credit losses. The amendments in ASU No. 2016-13 available-for-sale off-balance The Company adopted ASU No. 2016-13 No. 2016-13. The Company adopted, on a prospective basis, ASU No. 2017-04, No. 2017-04 No. 2017-04 The adoption of ASU No. 2017-04 COVID-19 more-likely-than-not	Impact of Recent Accounting Pronouncements Recently Adopted Accounting Standards The Company adopted ASU No. 2020-04 The Company adopted ASU No. 2016-13, No. 2016-13”) No. 2016-13 available-for-sale No. 2016-13 No. 2016-13 available-for-sale off-balance The Company adopted ASU No. 2016-13 No. 2016-13. comprehensive income (loss) as of the date of adoption that relate to improvements in cash flows expected to be collected continue to be accreted into income over the remaining life of the asset. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption are recorded in earnings when received. The Company adopted ASU No. 2018-13, No. 2018-13 No. 2018-13 The Company adopted, on a prospective basis, ASU No. 2017-04, No. 2017-04 No. 2017-04 The adoption of ASU No. 2017-04 COVID-19 more-likely-than-not

Summary Of Significant Accoun_2

Summary Of Significant Accounting Policies (Policies)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Organization	Organization New York Community Bancorp, Inc. (on a stand-alone basis, the “Parent Company” or, collectively with its subsidiaries, the “Company”) was organized under Delaware law on July 20, 1993 and is the holding company for New York Community Bank (hereinafter referred to as the “Bank”). Founded on April 14, 1859 and formerly known as Queens County Savings Bank, the Bank converted from a state-chartered mutual savings bank to the capital stock form of ownership on November 23, 1993, at which date the Company issued its initial offering of common stock (par value: $0.01 per share) at a price of $25.00 per share ($0.93 per share on a split-adjusted basis, reflecting the impact of nine stock splits between 1994 and 2004). The Bank currently operates 237 branches, 19 of which operate directly under the Community Bank name. The remaining 218 Community Bank branches operate through eight divisional banks: Queens County Savings Bank, Roslyn Savings Bank, Richmond County Savings Bank, Roosevelt Savings Bank, and Atlantic Bank in New York; Garden State Community Bank in New Jersey; AmTrust Bank in Florida and Arizona; and Ohio Savings Bank in Ohio.	Organization New York Community Bancorp, Inc. (on a stand-alone basis, the “Parent Company” or, collectively with its subsidiaries, the “Company”) was organized under Delaware law on July 20, 1993 and is the holding company for New York Community Bank (hereinafter referred to as the “Bank”). Founded on April 14, 1859 and formerly known as Queens County Savings Bank, the Bank converted from a state-chartered mutual savings bank to the capital stock form of ownership on November 23, 1993, at which date the Company issued its initial offering of common stock (par value: $0.01 per share) at a price of $25.00 per share ($0.93 per share on a split-adjusted basis, reflecting the impact of nine stock splits between 1994 and 2004). The Company currently operates 237 branches through eight local divisions, each with a history of service and strength: Queens County Savings Bank, Roslyn Savings Bank, Richmond County Savings Bank, Roosevelt Savings Bank, and Atlantic Bank in New York; Garden State Community Bank in New Jersey; Ohio Savings Bank in Ohio; and AmTrust Bank in Arizona and Florida.
Basis of Presentation	Basis of Presentation The following is a description of the significant accounting and reporting policies that the Company and its subsidiaries follow in preparing and presenting their consolidated financial statements, which conform to U.S. generally accepted accounting principles (“GAAP”) and to general practices within the banking industry. The preparation of financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Estimates that are particularly susceptible to change in the near term are used in connection with the determination of the allowance for credit losses and the evaluation of goodwill for impairment. The accompanying consolidated financial statements include the accounts of the Company and other entities in which the Company has a controlling financial interest. All inter-company accounts and transactions are eliminated in consolidation. The Company currently has certain unconsolidated subsidiaries in the form of wholly-owned statutory business trusts, which were formed to issue guaranteed capital securities. See Note 7, Borrowed Funds, for additional information regarding these trusts. When necessary, certain reclassifications have been made to prior-year amounts to conform to the current-year presentation.	Basis of Presentation The following is a description of the significant accounting and reporting policies that the Company and its subsidiaries follow in preparing and presenting their consolidated financial statements, which conform to U.S. generally accepted accounting principles (“GAAP”) and to general practices within the banking industry. The preparation of financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Estimates that are used in connection with the determination of the allowance for loan and lease losses and the evaluation of goodwill for impairment, The accompanying consolidated financial statements include the accounts of the Company and other entities in which the Company has a controlling financial interest. All inter-company accounts and transactions are eliminated in consolidation. The Company currently has certain unconsolidated subsidiaries in the form of wholly-owned statutory business trusts, which were formed to issue guaranteed capital securities. See Note 9, “Borrowed Funds,” for additional information regarding these trusts. When necessary, certain reclassifications have been made to prior-year amounts to conform to the current-year presentation.
Cash and Cash Equivalents		Cash and Cash Equivalents For cash flow reporting purposes, cash and cash equivalents include cash on hand, amounts due from banks, and money market investments, which include federal funds sold and reverse repurchase agreements. At December 31, 2020 and 2019, the Company’s cash and cash equivalents totaled $1.9 billion and $741.9 million, respectively. Included in cash and cash equivalents at those dates were $1.6 billion and $608.4 million, respectively, of interest-bearing deposits in other financial institutions, primarily consisting of balances due from the FRB-NY.
Securities Available for Sale and Held to Maturity		Debt Securities and Equity Investments with Readily Determinable Fair Values The securities portfolio primarily consists of mortgage-related securities and, to a lesser extent, debt and equity securities. Securities that are classified as “available for sale” are carried at their estimated fair value, with any unrealized gains or losses, net of taxes, reported as accumulated other comprehensive income or loss in stockholders’ equity. Securities that the Company has the intent and ability to hold to maturity are classified as “held to maturity” and carried at amortized cost. The fair values of our securities—and particularly our fixed-rate securities—are affected by changes in market interest rates and credit spreads. In general, as interest rates rise and/or credit spreads widen, the fair value of fixed-rate securities will decline. As interest rates fall and/or credit spreads tighten, the fair value of fixed-rate securities will rise. The Company evaluates available-for-sale available-for-sale The Company first assess whether (i) it intends to sell, or (ii) it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis. If either of these criteria is met, any previously recognized allowances are charged off and the security’s amortized cost basis is written down to fair value through income. If neither of the aforementioned criteria are met, the Company evaluates whether the decline in fair value has resulted from credit losses or other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Management has made the accounting policy election to exclude accrued interest receivable on available-for-sale Available-for-sale non-accrual non-accrual Equity investments with readily determinable fair values are measured at fair value with changes in fair value recognized in net income. Premiums and discounts on securities are amortized to expense and accreted to income over the remaining period to contractual maturity using a method that approximates the interest method, and are adjusted for anticipated prepayments. Dividend and interest income are recognized when earned. The cost of securities sold is based on the specific identification method.
Federal Home Loan Bank Stock		Federal Home Loan Bank Stock As a member of the FHLB-NY, FHLB-NY FHLB-NY. The Company conducts a periodic review and evaluation of its FHLB-NY FHLB-NY FHLB-NY
Loans		Loans Loans, net, are carried at unpaid principal balances, including unearned discounts, purchase accounting (i.e., acquisition-date fair value) adjustments, net deferred loan origination costs or fees, and the allowance for credit losses on loans. The Company recognizes interest income on loans using the interest method over the life of the loan. Accordingly, the Company defers certain loan origination and commitment fees, and certain loan origination costs, and amortizes the net fee or cost as an adjustment to the loan yield over the term of the related loan. When a loan is sold or repaid, the remaining net unamortized fee or cost is recognized in interest income. Prepayment income on loans is recorded in interest income and only when cash is received. Accordingly, there are no assumptions involved in the recognition of prepayment income. Two factors are considered in determining the amount of prepayment income: the prepayment penalty percentage set forth in the loan documents, and the principal balance of the loan at the time of prepayment. The volume of loans prepaying may vary from one period to another, often in connection with actual or perceived changes in the direction of market interest rates. When interest rates are declining, rising precipitously, or perceived to be on the verge of rising, prepayment income may increase as more borrowers opt to refinance and lock in current rates prior to further increases taking place. A loan generally is classified as a “non-accrual” non-accrual non-accrual
Allowance for Credit Losses on Loans and Leases		Allowance for Credit Losses on Loans and Leases The Company’s January 1, 2020, adoption of ASU No. 2016-13, No. 2016-13 off-balance The allowance for credit losses on loans and leases is deducted from the amortized cost basis of a financial asset or a group of financial assets so that the balance sheet reflects the net amount the Company expects to collect. Amortized cost is the unpaid loan balance, net of deferred fees and expenses, and includes negative escrow. Subsequent changes (favorable and unfavorable) in expected credit losses are recognized immediately in net income as a credit loss expense or a reversal of credit loss expense. Management estimates the allowance by projecting and multiplying together the probability-of-default, exposure-at-default The allowance for credit losses on loans and leases is measured on a collective (pool) basis when similar risk characteristics exist. The portfolio segment represents the level at which a systematic methodology is applied to estimate credit losses. Management believes the products within each of the entity’s portfolio segments exhibit similar risk characteristics. Smaller pools of homogenous financing receivables with homogeneous risk characteristics were modeled using the methodology selected for the portfolio segment. The macroeconomic data used in the quantitative models are based on a reasonable and supportable forecast period of 24 months. The Company leverages economic projections including property market and prepayment forecasts from established independent third parties to inform its loss drivers in the forecast. Beyond this forecast period, the Company reverts to a historical average loss rate. This reversion to the historical average loss rate is performed on a straight-line basis over 12 months. Loans that do not share risk characteristics are evaluated on an individual basis. These include loans that are in nonaccrual status with balances above management determined materiality thresholds depending on loan class and also loans that are designated as TDR or “reasonably expected TDR” (criticized, classified, or maturing loans that will have a modification processed within the next three months). In addition, all taxi medallion loans are individually evaluated. If a loan is determined to be collateral dependent, or meets the criteria to apply the collateral dependent practical expedient, expected credit losses are determined based on the fair value of the collateral at the reporting date, less costs to sell as appropriate. The Company maintains an allowance for credit losses on off-balance off-balance fund-up fund-up fund-up Allowance for Loan and Lease Losses - 2019 At December 31, 2019, the methodology used for the allocation of the allowance for loan and lease losses the Bank segregated their loss factors (used for both criticized and non-criticized The allowance for loan and lease losses is established based on management’s evaluation of incurred losses in the portfolio in accordance with GAAP, and is comprised of both specific valuation allowances and a general valuation allowance. Specific valuation allowances are established based on management’s analyses of individual loans that are considered impaired. If a loan is deemed to be impaired, management measures the extent of the impairment and establishes a specific valuation allowance for that amount. A loan is classified as impaired when, based on current information and/or events, it is probable that the Company will be unable to collect all amounts due under the contractual terms of the loan agreement. The Company applies this classification as necessary to loans individually evaluated for impairment in our portfolios. Smaller-balance homogenous loans and loans carried at the lower of cost or fair value are evaluated for impairment on a collective, rather than individual, basis. Loans to certain borrowers who have experienced financial difficulty and for which the terms have been modified, resulting in a concession, are considered TDRs and are classified as impaired. The Company primarily measures impairment on an individual loan and determine the extent to which a specific valuation allowance is necessary by comparing the loan’s outstanding balance to either the fair value of the collateral, less the estimated cost to sell, or the present value of expected cash flows, discounted at the loan’s effective interest rate. Generally, when the fair value of the collateral, net of the estimated cost to sell, or the present value of the expected cash flows is less than the recorded investment in the loan, any shortfall is promptly charged off. The Company also follows a process to assign the general valuation allowance to loan categories. The general valuation allowance is established by applying our loan loss provisioning methodology, and reflect the inherent risk in outstanding held-for-investment charge-off The allocation methodology consists of the following components: First, the Company determines an allowance for loan and lease losses based on a quantitative loss factor for loans evaluated collectively for impairment. This quantitative loss factor is based primarily on historical loss rates, after considering loan type, historical loss and delinquency experience, and loss emergence periods. The quantitative loss factors applied in the methodology are periodically re-evaluated • Changes in lending policies and procedures, including changes in underwriting standards and collection, and charge-off • Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments; • Changes in the nature and volume of the portfolio and in the terms of loans; • Changes in the volume and severity of past-due non-accrual • Changes in the quality of our loan review system; • Changes in the value of the underlying collateral for collateral-dependent loans; • The existence and effect of any concentrations of credit, and changes in the level of such concentrations; • Changes in the experience, ability, and depth of lending management and other relevant staff; and • The effect of other external factors, such as competition and legal and regulatory requirements, on the level of estimated credit losses in the existing portfolio. By considering the factors discussed above, the Company determined an allowance for loan and lease losses that is applied to each significant loan portfolio segment to determine the total allowance for loan and lease losses. The historical loss period the Company uses to determine the allowance for loan and lease losses on loans is a rolling 36-quarter The process of establishing the allowance for losses on loans also involves: • Periodic inspections of the loan collateral by qualified in-house • Regular meetings of executive management with the pertinent Board committees, during which observable trends in the local economy and/or the real estate market are discussed; • Assessment of the aforementioned factors by the pertinent members of the Board of Directors and management when making a business judgment regarding the impact of anticipated changes on the future level of loan losses; and • Analysis of the portfolio in the aggregate, as well as on an individual loan basis, taking into consideration payment history, underwriting analyses, and internal risk ratings. In order to determine their overall adequacy, the loan loss allowance is reviewed quarterly by management Board Committees and the Board of Directors of the Bank, as applicable. An allowance for unfunded commitments is maintained separate from the allowance for loan and lease losses and is included in Other liabilities in the Consolidated Statements of Condition.
Goodwill		Goodwill The Company adopted, on a prospective basis, ASU No. 2017-04, assets acquired and liabilities assumed are recorded at their estimated fair values. Goodwill represents the excess of the purchase price of its acquisitions over the fair value of identifiable net assets acquired, including other identified intangible assets. The Company tests goodwill for impairment at the reporting unit level. The Company has identified one reporting unit which is the same as its operating segment and reportable segment. If the Company changes its strategy or if market conditions shift, its judgments may change, which may result in adjustments to the recorded goodwill balance. The Company performs its goodwill impairment test in the fourth quarter of each year, or more often if events or circumstances warrant. For annual goodwill impairment testing, the Company has the option to first perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill and other intangible assets. If the Company concludes that this is the case, it would compare the fair value the reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. The loss recognized, however, would not exceed the total amount of goodwill allocated to that reporting unit. Additionally, the Company would consider income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. As of December 31, 2020, the Company’s goodwill was not impaired.
Premises and Equipment, Net		Premises and Equipment, Net Premises, furniture, fixtures, and equipment are carried at cost, less the accumulated depreciation computed on a straight-line basis over the estimated useful lives of the respective assets (generally 20 years for premises and three Depreciation is included in “Occupancy and equipment expense” in the Consolidated Statements of Income and Comprehensive Income, and amounted to $23.9 million, $27.1 million, and $32.3 million, respectively, in the years ended December 31, 2020, 2019, and 2018.
Bank-Owned Life Insurance		Bank-Owned Life Insurance The Company has purchased life insurance policies on certain employees. These BOLI policies are recorded in the Consolidated Statements of Condition at their cash surrender value. Income from these policies and changes in the cash surrender value are recorded in “Non-interest
Repossessed Assets and OREO		Repossessed Assets and OREO Repossessed assets consist of any property or other assets acquired through, or in lieu of, foreclosure are sold or rented, and are recorded at fair value, less the estimated selling costs, at the date of acquisition. Following foreclosure, management periodically performs a valuation of the asset, and the assets are carried at the lower of the carrying amount or fair value, less the estimated selling costs. Expenses and revenues from operations and changes in valuation, if any, are included in “General and administrative expense” in the Consolidated Statements of Income and Comprehensive Income. At December 31, 2020, the Company had $1.8 million of OREO and $6.5 million of taxi medallions. At December 31, 2019, the Company had $2.0 million of OREO and $10.3 million of taxi medallions.
Income Taxes		Income Taxes Income tax expense consists of income taxes that are currently payable and deferred income taxes. Deferred income tax expense is determined by recognizing deferred tax assets and liabilities for future tax consequences attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates that are expected to apply to taxable income in years in which those temporary differences are expected to be recovered or settled. The Company assesses the deferred tax assets and establishes a valuation allowance when realization of a deferred asset is not considered to be “more likely than not.” The Company considers its expectation of future taxable income in evaluating the need for a valuation allowance. The Company estimates income taxes payable based on the amount it expects to owe the various tax authorities (i.e., federal, state, and local). Income taxes represent the net estimated amount due to, or to be received from, such tax authorities. In estimating income taxes, management assesses the relative merits and risks of the appropriate tax treatment of transactions, taking into account statutory, judicial, and regulatory guidance in the context of the Company’s tax position. In this process, management also relies on tax opinions, recent audits, and historical experience. Although the Company uses the best available information to record income taxes, underlying estimates and assumptions can change over time as a result of unanticipated events or circumstances such as changes in tax laws and judicial guidance influencing its overall tax position.​​​​​​​
Derivative Instruments and Hedging Activities		Derivative Instruments and Hedging Activities The Company records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge. The Company may enter into derivative contracts that are intended to economically hedge certain of its risks, even though hedge accounting does not apply or the Company elects not to apply hedge accounting.
Stock-Based Compensation		Stock-Based Compensation Under the New York Community Bancorp, Inc. 2020 Omnibus Incentive Plan (the “2020 Incentive Plan”), which was approved by the Company’s shareholders at its Annual Meeting on June 3, 2020, shares are available for grant as restricted stock or other forms of related rights. At December 31, 2020, the Company had 11,913,461 shares available for grant under the 2020 Incentive Plan. Compensation cost related to restricted stock grants is recognized on a straight-line basis over the vesting period. For a more detailed discussion of the Company’s stock-based compensation, see Note 15, “Stock-Related Benefit Plans.”
Retirement Plans		Retirement Plans The Company’s pension benefit obligations and post-retirement health and welfare benefit obligations, and the related costs, are calculated using actuarial concepts in accordance with GAAP. The measurement of such obligations and expenses requires that certain assumptions be made regarding several factors, most notably including the discount rate and the expected rate of return on plan assets. The Company evaluates these assumptions on an annual basis. Other factors considered by the Company in its evaluation include retirement patterns, mortality rates, turnover, and the rate of compensation increase. Under GAAP, actuarial gains and losses, prior service costs or credits, and any remaining transition assets or obligations that have not been recognized under previous accounting standards must be recognized in AOCL until they are amortized as a component of net periodic benefit cost.
Earnings per Common Share (Basic and Diluted)		Earnings per Common Share (Basic and Diluted) Basic EPS is computed by dividing the net income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted EPS is computed using the same method as basic EPS, however, the computation reflects the potential dilution that would occur if outstanding in-the-money Unvested stock-based compensation awards containing non-forfeitable two-class two-class securities based on their respective rights to receive dividends on the common stock. The Company grants restricted stock to certain employees under its stock-based compensation plan. Recipients receive cash dividends during the vesting periods of these awards, including on the unvested portion of such awards. Since these dividends are non-forfeitable, The following table presents the Company’s computation of basic and diluted earnings per common share for the years ended December 31, 2020, 2019, and 2018: Years Ended December 31, (in thousands, except share and per share amounts) 2020 2019 2018 Net income available to common shareholders $ 478,281 $ 362,215 $ 389,589 Less: Dividends paid on and earnings allocated to participating securities (5,798 ) (4,333 ) (4,871 ) Earnings applicable to common stock $ 472,483 $ 357,882 $ 384,718 Weighted average common shares outstanding 462,605,341 465,380,010 487,287,872 Basic earnings per common share $ 1.02 $ 0.77 $ 0.79 Earnings applicable to common stock $ 472,483 $ 357,882 $ 384,718 Weighted average common shares outstanding 462,605,341 465,380,010 487,287,872 Potential dilutive common shares 676,061 283,322 — Total shares for diluted earnings per common share computation 463,281,402 465,663,332 487,287,872 Diluted earnings per common share and common share equivalents $ 1.02 $ 0.77 $ 0.79
Recently Adopted Accounting Standards	Impact of Recent Accounting Pronouncements Recently Adopted Accounting Standards The Company adopted ASU No. 2020-04 The Company adopted ASU No. 2016-13, No. 2016-13”) No. 2016-13 available-for-sale No. 2016-13 and, instead, requires an entity to reflect its current estimate of all expected credit losses. The amendments in ASU No. 2016-13 available-for-sale off-balance The Company adopted ASU No. 2016-13 No. 2016-13. The Company adopted, on a prospective basis, ASU No. 2017-04, No. 2017-04 No. 2017-04 The adoption of ASU No. 2017-04 COVID-19 more-likely-than-not	Impact of Recent Accounting Pronouncements Recently Adopted Accounting Standards The Company adopted ASU No. 2020-04 The Company adopted ASU No. 2016-13, No. 2016-13”) No. 2016-13 available-for-sale No. 2016-13 No. 2016-13 available-for-sale off-balance The Company adopted ASU No. 2016-13 No. 2016-13. comprehensive income (loss) as of the date of adoption that relate to improvements in cash flows expected to be collected continue to be accreted into income over the remaining life of the asset. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption are recorded in earnings when received. The Company adopted ASU No. 2018-13, No. 2018-13 No. 2018-13 The Company adopted, on a prospective basis, ASU No. 2017-04, No. 2017-04 No. 2017-04 The adoption of ASU No. 2017-04 COVID-19 more-likely-than-not

Computation of Earnings per C_2

Computation of Earnings per Common Share (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Computation of Basic and Diluted EPS	The following table presents the Company’s computation of basic and diluted EPS for the periods indicated: For the Three Months Ended (in thousands, except share and per share amounts) 2021 2020 Net income available to common shareholders $ 137,389 $ 92,121 Less: Dividends paid on and earnings allocated to participating securities (1,795 ) (1,170 ) Earnings applicable to common stock $ 135,594 $ 90,951 Weighted average common shares outstanding 463,292,906 464,993,970 Basic earnings per common share $ 0.29 $ 0.20 Earnings applicable to common stock $ 135,594 $ 90,951 Weighted average common shares outstanding 463,292,906 464,993,970 Potential dilutive common shares 594,031 418,674 Total shares for diluted earnings per common share computation 463,886,937 465,412,644 Diluted earnings per common share and common share equivalents $ 0.29 $ 0.20	The following table presents the Company’s computation of basic and diluted earnings per common share for the years ended December 31, 2020, 2019, and 2018: Years Ended December 31, (in thousands, except share and per share amounts) 2020 2019 2018 Net income available to common shareholders $ 478,281 $ 362,215 $ 389,589 Less: Dividends paid on and earnings allocated to participating securities (5,798 ) (4,333 ) (4,871 ) Earnings applicable to common stock $ 472,483 $ 357,882 $ 384,718 Weighted average common shares outstanding 462,605,341 465,380,010 487,287,872 Basic earnings per common share $ 1.02 $ 0.77 $ 0.79 Earnings applicable to common stock $ 472,483 $ 357,882 $ 384,718 Weighted average common shares outstanding 462,605,341 465,380,010 487,287,872 Potential dilutive common shares 676,061 283,322 — Total shares for diluted earnings per common share computation 463,281,402 465,663,332 487,287,872 Diluted earnings per common share and common share equivalents $ 1.02 $ 0.77 $ 0.79

Summary Of Significant Accoun_3

Summary Of Significant Accounting Policies (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Computation of Basic and Diluted Earnings (Loss) Per Common Share	The following table presents the Company’s computation of basic and diluted EPS for the periods indicated: For the Three Months Ended (in thousands, except share and per share amounts) 2021 2020 Net income available to common shareholders $ 137,389 $ 92,121 Less: Dividends paid on and earnings allocated to participating securities (1,795 ) (1,170 ) Earnings applicable to common stock $ 135,594 $ 90,951 Weighted average common shares outstanding 463,292,906 464,993,970 Basic earnings per common share $ 0.29 $ 0.20 Earnings applicable to common stock $ 135,594 $ 90,951 Weighted average common shares outstanding 463,292,906 464,993,970 Potential dilutive common shares 594,031 418,674 Total shares for diluted earnings per common share computation 463,886,937 465,412,644 Diluted earnings per common share and common share equivalents $ 0.29 $ 0.20	The following table presents the Company’s computation of basic and diluted earnings per common share for the years ended December 31, 2020, 2019, and 2018: Years Ended December 31, (in thousands, except share and per share amounts) 2020 2019 2018 Net income available to common shareholders $ 478,281 $ 362,215 $ 389,589 Less: Dividends paid on and earnings allocated to participating securities (5,798 ) (4,333 ) (4,871 ) Earnings applicable to common stock $ 472,483 $ 357,882 $ 384,718 Weighted average common shares outstanding 462,605,341 465,380,010 487,287,872 Basic earnings per common share $ 1.02 $ 0.77 $ 0.79 Earnings applicable to common stock $ 472,483 $ 357,882 $ 384,718 Weighted average common shares outstanding 462,605,341 465,380,010 487,287,872 Potential dilutive common shares 676,061 283,322 — Total shares for diluted earnings per common share computation 463,281,402 465,663,332 487,287,872 Diluted earnings per common share and common share equivalents $ 1.02 $ 0.77 $ 0.79

Reclassifications Out of Accu_2

Reclassifications Out of Accumulated Other Comprehensive Loss (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Reclassifications Of Accumulated Other Comprehensive Loss [Abstract]
Reclassifications Out of Accumulated Other Comprehensive Loss	(in thousands) For the Three Months Ended March 31, 2021 Details about Accumulated Other Comprehensive Loss Amount (1) Affected Line Item in the Unrealized gains (losses) on available-for-sale $ — Net gain (losses) on securities — Income tax expense $ — Net gain (losses) on securities, net of tax Unrealized loss on cash flow hedges: $ (5,891 ) Interest expense 1,617 Income tax benefit $ (4,274 ) Net loss on cash flow hedges, net of tax Amortization of defined benefit pension plan items: Past service liability $ 62 Included in the computation of net periodic credit (2) Actuarial losses (1,743 ) Included in the computation of net periodic cost (2) (1,681 ) Total before tax 462 Income tax benefit $ (1,219 ) Amortization of defined benefit pension plan items, net of tax Total reclassifications for the period $ (5,493 ) (1) Amounts in parentheses indicate expense items. (2) See Note 8, “Pension and Other Post-Retirement Benefits,” for additional information.	(in thousands) For the Twelve Months Ended December 31, 2020 Details about Amount (1) Affected Line Item in the Unrealized gains on available-for-sale $ 683 Net gain on securities (188 ) Income tax expense $ 495 Net gain on securities, net of tax Unrealized gains on cash flow hedges: $ (11,767 ) Interest expense 3,236 Income tax benefit $ (8,531 ) Net gain on cash flow hedges, net of tax Amortization of defined benefit pension plan items: Past service liability $ 249 Included in the computation of net (2) Actuarial losses (7,352 ) Included in the computation of net (2) (7,103 ) Total before tax 1,953 Income tax benefit $ (5,150 ) Amortization of defined benefit pension Total reclassifications for the period $ (13,186 ) (1) Amounts in parentheses indicate expense items. (2) See Note 14, “Employee Benefits,” for additional information.

Securities (Tables)

Securities (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Summary of Portfolio of Securities Available for Sale	The following tables summarize the Company’s portfolio of debt securities available for sale and equity investments with readily determinable fair values at March 31, 2021 and December 31, 2020: March 31, 2021 (in thousands) Amortized Gross Gross Fair Value Debt securities available-for-sale Mortgage-Related Debt Securities: GSE certificates $ 1,183,746 $ 40,473 $ 14,901 $ 1,209,318 GSE CMOs 2,007,855 28,837 50,422 1,986,270 Total mortgage-related debt securities $ 3,191,601 $ 69,310 $ 65,323 $ 3,195,588 Other Debt Securities: U. S. Treasury obligations $ 64,993 $ 5 $ — $ 64,998 GSE debentures 1,433,280 2,693 67,632 1,368,341 Asset-backed securities (1) 520,111 4,030 3,368 520,773 Municipal bonds 25,715 482 186 26,011 Corporate bonds 870,886 16,594 5,410 882,070 Foreign notes 25,000 993 — 25,993 Capital trust notes 95,621 6,823 8,313 94,131 Total other debt securities $ 3,035,606 $ 31,620 $ 84,909 $ 2,982,317 Total debt securities available for sale $ 6,227,207 $ 100,930 $ 150,232 $ 6,177,905 Equity Securities: Mutual funds 15,814 116 129 15,801 Total equity securities $ 15,814 $ 116 $ 129 $ 15,801 Total securities (2) $ 6,243,021 $ 101,046 $ 150,361 $ 6,193,706 (1) The underlying assets of the asset-backed securities are substantially guaranteed by the U.S. Government. (2) Excludes accrued interest receivable of $14.8 million included in other assets in the Consolidated Statements of Condition. December 31, 2020 (in thousands) Amortized Gross Gross Fair Value Debt securities available-for-sale Mortgage-Related Debt Securities: GSE certificates $ 1,155,436 $ 54,310 $ 136 $ 1,209,610 GSE CMOs 1,786,896 44,691 2,872 1,828,715 Total mortgage-related debt securities $ 2,942,332 $ 99,001 $ 3,008 $ 3,038,325 Other Debt Securities: U.S. Treasury obligations $ 64,984 $ 1 $ — $ 64,985 GSE debentures 1,158,253 3,998 3,949 1,158,302 Asset-backed securities (1) 530,226 2,576 5,703 527,099 Municipal bonds 25,776 625 90 26,311 Corporate bonds 870,745 17,928 6,447 882,226 Foreign notes 25,000 538 — 25,538 Capital trust notes 95,507 5,540 10,500 90,547 Total other debt securities $ 2,770,491 $ 31,206 $ 26,689 $ 2,775,008 Total other securities available for sale $ 5,712,823 $ 130,207 $ 29,697 $ 5,813,333 Equity Securities: Preferred stock $ 15,292 $ 201 $ — $ 15,493 Mutual funds 15,814 269 — 16,083 Total equity securities $ 31,106 $ 470 $ — $ 31,576 Total securities (2) $ 5,743,929 $ 130,677 $ 29,697 $ 5,844,909 (1) The underlying assets of the asset-backed securities are substantially guaranteed by the U.S. Government. (2) Excludes accrued interest receivable of $14.9 million included in other assets in the Consolidated Statements of Condition.	The following tables summarize the Company’s portfolio of debt securities available for sale and equity investments with readily determinable fair values at December 31, 2020 and 2019: December 31, 2020 (in thousands) Amortized Gross Gross Fair Value Debt securities available-for-sale Mortgage-Related Debt Securities: GSE certificates $ 1,155,436 $ 54,310 $ 136 $ 1,209,610 GSE CMOs 1,786,896 44,691 2,872 1,828,715 Total mortgage-related debt securities $ 2,942,332 $ 99,001 $ 3,008 $ 3,038,325 Other Debt Securities: U. S. Treasury obligations $ 64,984 $ 1 $ — $ 64,985 GSE debentures 1,158,253 3,998 3,949 1,158,302 Asset-backed securities (1) 530,226 2,576 5,703 527,099 Municipal bonds 25,776 625 90 26,311 Corporate bonds 870,745 17,928 6,447 882,226 Foreign notes 25,000 538 — 25,538 Capital trust notes 95,507 5,540 10,500 90,547 Total other debt securities $ 2,770,491 $ 31,206 $ 26,689 $ 2,775,008 Total debt securities available for sale $ 5,712,823 $ 130,207 $ 29,697 $ 5,813,333 Equity securities: Preferred stock 15,292 201 — 15,493 Mutual funds 15,814 269 — 16,083 Total equity securities $ 31,106 $ 470 $ — $ 31,576 Total securities (2) $ 5,743,929 $ 130,677 $ 29,697 $ 5,844,909 (1) The underlying assets of the asset-backed securities are substantially guaranteed by the U.S. Government.. (2) Excludes accrued interest receivable of $14.9 million included in other assets in the Consolidated Statements of Condition. December 31, 2019 (in thousands) Amortized Gross Gross Fair Debt securities available-for-sale Mortgage-Related Debt Securities: GSE certificates $ 1,530,317 $ 26,069 $ 3,763 $ 1,552,623 GSE CMOs 1,783,440 21,213 3,541 1,801,112 Total mortgage-related debt securities $ 3,313,757 $ 47,282 $ 7,304 $ 3,353,735 Other Debt Securities: U. S. Treasury obligations $ 41,820 $ 19 $ — $ 41,839 GSE debentures 1,093,845 5,707 5,312 1,094,240 Asset-backed securities (1) 384,108 — 10,854 373,254 Municipal bonds 26,808 559 475 26,892 Corporate bonds 854,195 15,970 2,983 867,182 Capital trust notes 95,100 7,121 6,306 95,915 Total other debt securities $ 2,495,876 $ 29,376 $ 25,930 $ 2,499,322 Total other securities available for sale $ 5,809,633 $ 76,658 $ 33,234 $ 5,853,057 Equity securities: Preferred stock 15,292 122 — 15,414 Mutual funds and common stock (2) 16,871 718 173 17,416 Total equity securities $ 32,163 $ 840 $ 173 $ 32,830 Total securities (3) $ 5,841,796 $ 77,498 $ 33,407 $ 5,885,887 (1) The underlying assets of the asset-backed securities are substantially guaranteed by the U.S. Government. (2) Primarily consists of mutual funds that are CRA-qualified (3) Excludes accrued interest receivable of $24.4 million included in other assets in the Consolidated Statements of Condition.
Summary of Gross Proceeds and Gross Realized Gains and Losses from Sale of Available-for-Sale Securities	The following table summarizes the gross proceeds, gross realized gains, and gross realized losses from the sale of available-for-sale For the Three (in thousands) 2021 2020 Gross proceeds — $ 369,972 Gross realized gains — 1,811 Gross realized losses — 1,062	The following table summarizes the gross proceeds, gross realized gains, and gross realized losses from the sale of available-for-sale December 31, (in thousands) 2020 2019 2018 Gross proceeds $ 483,872 $ 361,311 $ 278,539 Gross realized gains 1,945 5,445 967 Gross realized losses 1,262 — 981
Summary of Amortized Cost of Available-for-Sale Securities by Contractual Maturity	The following table summarizes, by contractual maturity, the amortized cost of securities at March 31, 2021: (dollars in thousands) Mortgage- Average U.S. Average State, Average (1) Other Debt (2) Average Fair Available-for-Sale Due within one year $ 23,017 3.76 % $ 75,943 0.54 % $ — — % $ 49,817 3.01 % $ 149,348 Due from one to five years 361,118 3.18 21,924 3.52 — — 223,181 1.87 637,035 Due from five to ten years 175,554 2.48 238,052 2.16 19,840 3.51 706,390 2.03 1,146,853 Due after ten years 2,631,912 1.98 1,162,354 1.53 5,875 3.33 532,230 1.25 4,244,669 Total debt securities available for sale $ 3,191,601 2.16 % $ 1,498,273 1.61 % $ 25,715 3.47 % $ 1,511,618 1.76 % $ 6,177,905 (1) Not presented on a tax-equivalent (2) Includes corporate bonds, capital trust notes, and asset-backed securities.	The following table summarizes, by contractual maturity, the amortized cost of securities at December 31, 2020: Mortgage- Average U.S. Average State, Average (1) Other (2) Average Fair Value (dollars in thousands) Available-for-Sale Due within one year $ 49,797 3.03 % $ 75,934 0.56 % $ — — % $ 49,704 3.02 $ 176,720 Due from one to five years 405,157 3.16 21,924 3.52 — — 151,873 2.22 615,048 Due from five to ten years 175,689 2.48 138,053 2.37 19,898 3.51 779,401 1.88 1,130,037 Due after ten years 2,311,689 2.15 987,326 1.60 5,878 3.33 540,500 1.29 3,891,528 Total debt securities available for sale $ 2,942,332 2.32 $ 1,223,237 1.66 $ 25,776 3.47 $ 1,521,478 1.74 $ 5,813,333 (1) Not presented on a tax-equivalent (2) Includes corporate bonds, capital trust notes, foreign notes, and asset-backed securities.
Summary of Held-to-Maturity and Available-for-Sale Securities having Continuous Unrealized Loss Position	The following table presents securities with no related allowance having a continuous unrealized loss position for less than twelve months and for twelve months or longer as of March 31, 2021: Less than Twelve Months Twelve Months or Total (in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Temporarily Impaired Securities: GSE certificates $ 323,281 $ 14,901 $ — $ — $ 323,281 $ 14,901 GSE CMOs 918,257 50,422 — — 918,257 50,422 GSE debentures 1,244,721 67,633 — — 1,244,721 67,633 Asset-backed securities 112,149 405 179,063 2,962 291,212 3,367 Municipal bonds — — 8,744 186 8,744 186 Corporate bonds — — 319,590 5,410 319,590 5,410 Capital trust notes — — 35,601 8,313 35,601 8,313 Equity securities 11,676 129 — — 11,676 129 Total temporarily impaired securities $ 2,610,084 $ 133,490 $ 542,998 $ 16,871 $ 3,153,082 $ 150,361 The following table presents securities having a continuous unrealized loss position for less than twelve months and for twelve months or longer as of December 31, 2020: Less than Twelve Months Twelve Months or Total (in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Temporarily Impaired Securities: U. S. Treasury obligations $ — $ — $ — $ — $ — $ — U. S. Government agency and GSE obligations 58,876 136 — — 58,876 136 GSE certificates 442,207 2,807 73,568 65 515,775 2,872 GSE CMOs 522,441 3,949 — — 522,441 3,949 Asset-backed securities — — 363,618 5,703 363,618 5,703 Municipal bonds — — 8,891 90 8,891 90 Corporate bonds 72,024 2,976 246,528 3,471 318,552 6,447 Foreign notes — — — — — — Capital trust notes — — 33,393 10,500 33,393 10,500 Equity securities — — — — — — Total temporarily impaired securities $ 1,095,548 $ 9,868 $ 725,998 $ 19,829 $ 1,821,546 $ 29,697	The following table presents securities having a continuous unrealized loss position for less than twelve months and for twelve months or longer as of December 31, 2020: Less than Twelve Months Twelve Months or Longer Total (in thousands) Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized Temporarily Impaired Securities: U. S. Treasury obligations $ — $ — $ — $ — $ — $ — GSE certificates 58,876 136 — — 58,876 136 GSE CMOs 442,207 2,807 73,568 65 515,775 2,872 GSE debenture 522,441 3,949 — — 522,441 3,949 Asset-backed securities — — 363,618 5,703 363,618 5,703 Municipal bonds — — 8,891 90 8,891 90 Corporate bonds 72,024 2,976 246,528 3,471 318,552 6,447 Foreign notes — — — — — — Capital trust notes — — 33,393 10,500 33,393 10,500 Equity securities — — — — — — Total temporarily impaired securities $ 1,095,548 $ 9,868 $ 725,998 $ 19,829 $ 1,821,546 $ 29,697 The following table presents securities having a continuous unrealized loss position for less than twelve months and for twelve months or longer as of December 31, 2019: Less than Twelve Months Twelve Months or Longer Total (in thousands) Fair Value Unrealized Fair Unrealized Fair Value Unrealized Temporarily Impaired Securities: U. S. Treasury Obligations $ 11,917 $ — $ — $ — $ 11,917 $ — GSE debentures 297,179 3,916 138,189 1,396 435,368 5,312 GSE certificates 396,930 3,718 7,542 45 404,472 3,763 GSE CMOs 609,502 2,582 133,955 959 743,457 3,541 Asset-backed securities 256,619 7,701 116,635 3,154 373,254 10,855 Municipal bonds — — 9,349 475 9,349 475 Corporate bonds 99,300 700 172,717 2,282 272,017 2,982 Capital trust notes — — 37,525 6,306 37,525 6,306 Equity securities — — 11,633 173 11,633 173 Total temporarily impaired securities $ 1,671,447 $ 18,617 $ 627,545 $ 14,790 $ 2,298,992 $ 33,407

Loans and Leases (Tables)

Loans and Leases (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Composition of Loan and Lease Portfolio	The following table sets forth the composition of the loan portfolio at the dates indicated: March 31, 2021 December 31, 2020 (dollars in thousands) Amount Percent of Amount Percent of Loans and Leases Held for Investment: Mortgage Loans: Multi-family $ 32,195,256 74.77 % $ 32,236,385 75.28 % Commercial real estate 7,027,236 16.32 6,835,763 15.96 One-to-four 208,108 0.48 235,989 0.55 Acquisition, development, and construction 115,947 0.27 89,790 0.21 Total mortgage loans held for investment (1) 39,546,547 91.84 $ 39,397,927 92.00 Other Loans: Commercial and industrial 1,610,550 3.74 1,682,519 3.93 Lease financing, net of unearned income of $110,582 and $116,366, respectively 1,898,980 4.41 1,734,824 4.05 Total commercial and industrial loans (2) 3,509,530 8.15 3,417,343 7.98 Other 5,593 0.01 6,520 0.02 Total other loans held for investment (1) 3,515,123 8.16 3,423,863 8.00 Total loans and leases held for investment $ 43,061,670 100.00 % $ 42,821,790 100.00 % Net deferred loan origination costs 63,469 61,808 Allowance for credit losses loans and leases (197,758 ) (194,043 ) Total loans and leases held for investment, net $ 42,927,381 $ 42,689,555 Loans held for sale (3) 141,435 117,136 Total loans and leases, net $ 43,068,816 $ 42,806,691 (1) Excludes accrued interest receivable of $219.0 million and $219.1 million at March 31, 2021 and December 31, 2020, respectively, which is included in other assets in the Consolidated Statements of Condition. (2) Includes specialty finance loans and leases of $3.2 billion and $3.0 billion, respectively, at March 31, 2021 and December 31, 2020, and other C&I loans of $350.8 million and $393.3 million, respectively, at March 31, 2021 and December 31, 2020. (3) Includes deferred loan origination fees of $3.8 million and $1.7 million at March 31, 2021 and December 31, 2020, respectively.	The following table sets forth the composition of the loan and lease portfolio at the dates indicated: December 31, 2020 December 31, 2019 (dollars in thousands) Amount Percent of Amount Percent of Loans and Leases Held for Investment: Mortgage Loans: Multi-family $ 32,236,385 75.28 % $ 31,158,672 74.46 % Commercial real estate 6,835,763 15.96 7,081,910 16.93 One-to-four 235,989 0.55 380,361 0.91 Acquisition, development, and construction 89,790 0.21 200,596 0.48 Total mortgage loans held for investment (1) 39,397,927 92.00 38,821,539 92.78 Other Loans: Commercial and industrial 1,682,519 3.93 1,742,380 4.16 Lease financing, net of unearned income of $116,366 and $104,826, respectively 1,734,824 4.05 1,271,998 3.04 Total commercial and industrial loans (2) 3,417,343 7.98 3,014,378 7.20 Other 6,520 0.02 8,102 0.02 Total other loans held for investment 3,423,863 8.00 3,022,480 7.22 Total loans and leases held for investment (1) $ 42,821,790 100.00 % $ 41,844,019 100.00 % Net deferred loan origination costs 61,808 50,136 Allowance for loan and lease losses (194,043 ) (147,638 ) Total loans and leases held for investment, net $ 42,689,555 $ 41,746,517 Loans held for sale (3) 117,136 — Total loans and leases, net $ 42,806,691 $ 41,746,517 (1) Excludes accrued interest receivable of $219.1 million and $116.9 million at December 31, 2020 and December 31, 2019, respectively, which is included in other assets in the Consolidated Statements of Condition. (2) Includes specialty finance loans and leases of $3.0 billion and $2.6 billion, respectively, at December 31, 2020 and December 31, 2019, and other C&I loans of $393.3 million and $420.1 million, respectively, at December 31, 2020 and December 31, 2019. (3) Includes deferred loan origination fees of $1.7 million.
Quality of Loans Held for Investment	The following table presents information regarding the quality of the Company’s loans held for investment at March 31, 2021: (in thousands) Loans 30-89 Non- Loans Total Current Total Loans Multi-family $ 961 $ 9,888 $ — $ 10,849 $ 32,184,407 $ 32,195,256 Commercial real estate 19,371 11,573 — 30,944 6,996,292 7,027,236 One-to-four — 1,466 — 1,466 206,642 208,108 Acquisition, development, and construction — — — — 115,947 115,947 Commercial and industrial (1)(2) — 10,247 — 10,247 3,499,283 3,509,530 Other 13 4 — 17 5,576 5,593 Total loans and leases held for investment $ 20,345 $ 33,178 $ — $ 53,523 $ 43,008,147 $ 43,061,670 (1) Includes $10.1 million of taxi medallion-related loans that were 90 days or more past due. There were no taxi medallion-related loans that were 30 to 89 days past due. (2) Includes lease financing receivables, all of which were current. The following table presents information regarding the quality of the Company’s loans held for investment at December 31, 2020: (in thousands) Loans 30-89 Non- Loans Total Current Total Loans Multi-family $ 4,091 $ 4,068 $ — $ 8,159 $ 32,228,226 $ 32,236,385 Commercial real estate 9,989 12,142 — 22,131 6,813,632 6,835,763 One-to-four 1,575 1,696 — 3,271 232,718 235,989 Acquisition, development, and construction — — — — 89,790 89,790 Commercial and industrial (1)(2) — 19,866 — 19,866 3,397,477 3,417,343 Other 3 13 — 16 6,504 6,520 Total $ 15,658 $ 37,785 $ — $ 53,443 $ 42,768,347 $ 42,821,790 (1) Includes $18.6 million of taxi medallion-related loans that were 90 days or more past due. There were no taxi medallion-related loans that were 30 to 89 days past due. (2) Includes lease financing receivables, all of which were current.	The following table presents information regarding the quality of the Company’s loans held for investment at December 31, 2020: (in thousands) Loans 30-89 Non- Loans 90 Total Current Total Multi-family $ 4,091 $ 4,068 $ — $ 8,159 $ 32,228,226 $ 32,236,385 Commercial real estate 9,989 12,142 — 22,131 6,813,632 6,835,763 One-to-four 1,575 1,696 — 3,271 232,718 235,989 Acquisition, development, and construction — — — — 89,790 89,790 Commercial and industrial (1) (2) — 19,866 — 19,866 3,397,477 3,417,343 Other 3 13 — 16 6,504 6,520 Total $ 15,658 $ 37,785 $ — $ 53,443 $ 42,768,347 $ 42,821,790 (1) Includes $18.6 million of taxi medallion-related loans that were 90 days or more past due. There were no taxi medallion-related loans that were 30 89 (2) Includes lease financing receivables, all of which were current. The following table presents information regarding the quality of the Company’s loans held for investment at December 31, 2019: (in thousands) Loans 30-89 Non- Loans 90 Total Current Total Multi-family $ 1,131 $ 5,407 $ — $ 6,538 $ 31,152,134 $ 31,158,672 Commercial real estate 2,545 14,830 — 17,375 7,064,535 7,081,910 One-to-four — 1,730 — 1,730 378,631 380,361 Acquisition, development, and construction — — — — 200,596 200,596 Commercial and industrial (1) (2) — 39,024 — 39,024 2,975,354 3,014,378 Other 44 252 — 296 7,806 8,102 Total $ 3,720 $ 61,243 $ — $ 64,963 $ 41,779,056 $ 41,844,019 (1) Includes $30.4 million of taxi medallion-related loans that were 90 days or more past due. There were no taxi medallion-related loans that were 30 to 89 days past due. (2) Includes lease financing receivables, all of which were current.
Portfolio of Loans Held for Investment by Credit Quality Indicator	The following table summarizes the Company’s portfolio of loans held for investment by credit quality indicator at March 31, 2021: Mortgage Loans Other Loans (in thousands) Multi- Commercial One-to- Acquisition, Total Commercial (1) Other Total Other Credit Quality Indicator: Pass $ 30,647,027 $ 5,867,168 $ 194,220 $ 101,958 $ 36,810,373 $ 3,450,432 $ 5,589 $ 3,456,021 Special mention 875,091 785,007 5,354 13,989 1,679,441 2,071 — 2,071 Substandard 673,138 375,061 8,534 — 1,056,733 57,027 4 57,031 Doubtful — — — — — — — — Total $ 32,195,256 $ 7,027,236 $ 208,108 $ 115,947 $ 39,546,547 $ 3,509,530 $ 5,593 $ 3,515,123 (1) Includes lease financing receivables, all of which were classified as Pass. The following table summarizes the Company’s portfolio of loans held for investment by credit quality indicator at December 31, 2020: Mortgage Loans Other Loans (in thousands) Multi- Commercial One-to- Acquisition, Total Commercial (1) Other Total Other Credit Quality Indicator: Pass $ 31,220,071 $ 5,884,244 $ 221,861 $ 68,233 $ 37,394,409 $ 3,388,293 $ 6,507 $ 3,394,800 Special mention 566,756 637,101 12,436 21,557 1,237,850 2,842 — 2,842 Substandard 449,558 314,418 1,692 — 765,668 26,208 13 26,221 Doubtful — — — — — — — — Total $ 32,236,385 $ 6,835,763 $ 235,989 $ 89,790 $ 39,397,927 $ 3,417,343 $ 6,520 $ 3,423,863 (1) Includes lease financing receivables, all of which were classified as Pass.	The following table summarizes the Company’s portfolio of loans held for investment by credit quality indicator at December 31, 2020: Mortgage Loans Other Loans (in thousands) Multi- Commercial One-to- Acquisition, Total Commercial (1) Other Total Credit Quality Indicator: Pass $ 31,220,071 $ 5,884,244 $ 221,861 $ 68,233 $ 37,394,409 $ 3,388,293 $ 6,507 $ 3,394,800 Special mention 566,756 637,101 12,436 21,557 1,237,850 2,842 — 2,842 Substandard 449,558 314,418 1,692 — 765,668 26,208 13 26,221 Doubtful — — — — — — — — Total $ 32,236,385 $ 6,835,763 $ 235,989 $ 89,790 $ 39,397,927 $ 3,417,343 $ 6,520 $ 3,423,863 (1) Includes lease financing receivables, all of which were classified as Pass. The following table summarizes the Company’s portfolio of loans held for investment by credit quality indicator at December 31, 2019: Mortgage Loans Other Loans (in thousands) Multi- Commercial One-to- Acquisition, Total Commercial (1) Other Total Credit Quality Indicator: Pass $ 30,903,657 $ 6,902,218 $ 377,883 $ 158,751 $ 38,342,509 $ 2,960,557 $ 7,850 $ 2,968,407 Special mention 239,664 104,648 748 41,456 386,516 1,588 — 1,588 Substandard 15,351 75,044 1,730 389 92,514 52,233 252 52,485 Doubtful — — — — — — — Total $ 31,158,672 $ 7,081,910 $ 380,361 $ 200,596 $ 38,821,539 $ 3,014,378 $ 8,102 $ 3,022,480 (1) Includes lease financing receivables, all of which were classified as Pass.
Schedule of Credit Quality Indicator, Loan Class, and Year of Origination, the Amortized Cost Basis of Loans and Leases	The following table presents, by credit quality indicator, loan class, and year of origination, the amortized cost basis of the Company’s loans and leases as of March 31, 2021. (in thousands) Vintage Year Risk Rating Group 2021 2020 2019 2018 2017 Prior To Revolving Total Pass $ 2,092,263 $ 9,587,201 $ 6,432,567 $ 5,472,277 $ 3,995,854 $ 9,238,124 $ 20,182 $ 36,838,468 Special Mention — 13,067 215,301 345,152 136,466 969,925 — 1,679,911 Substandard — — 193,116 249,729 109,848 503,900 — 1,056,593 Total mortgage loans $ 2,092,263 $ 9,600,268 $ 6,840,984 $ 6,067,158 $ 4,242,168 $ 10,711,949 $ 20,182 $ 39,574,972 Pass 249,885 1,004,860 679,606 149,190 195,499 235,594 976,916 3,491,550 Special Mention — — 71 — — — 2,000 2,071 Substandard — 2,132 3,723 1,840 8,688 13,844 26,319 56,546 Total other loans 249,885 1,006,992 683,400 151,030 204,187 249,438 1,005,235 3,550,167 Total $ 2,342,148 $ 10,607,260 $ 7,524,384 $ 6,218,188 $ 4,446,355 $ 10,961,387 $ 1,025,417 $ 43,125,139	The following table presents, by credit quality indicator, loan class, and year of origination, the amortized cost basis of the Company’s loans and leases as of December 31, 2020. (in thousands) Vintage Year Risk Rating Group 2020 2019 2018 2017 2016 Prior To Revolving Total Pass $ 9,819,431 $ 6,719,587 $ 5,986,476 $ 4,260,433 $ 3,062,012 $ 7,571,266 $ 24,608 $ 37,443,813 Special Mention 13,067 116,400 176,428 164,635 332,176 425,632 — 1,228,338 Substandard — 121,861 177,123 60,924 221,835 172,293 — 754,036 Total mortgage loans $ 9,832,498 $ 6,957,848 $ 6,340,027 $ 4,485,992 $ 3,616,023 $ 8,169,191 $ 24,608 $ 39,426,187 Pass 962,956 757,220 180,133 209,963 126,680 144,999 1,046,400 3,428,351 Special Mention — 42 — — — — 2,800 2,842 Substandard 2,987 5,284 3,103 12,558 1,252 1,034 — 26,218 Total other loans 965,943 762,546 183,236 222,521 127,932 146,033 1,049,200 3,457,411 Total $ 10,798,441 $ 7,720,394 $ 6,523,263 $ 4,708,513 $ 3,743,955 $ 8,315,224 $ 1,073,808 $ 42,883,598
Summary of Collateral-Dependent Loans Held for Investment by Collateral Type	The following table summarizes the extent to which collateral secures the Company’s collateral-dependent loans held for investment by collateral type as of March 31, 2021: Collateral Type (in thousands) Real Property Other Multi-family $ 6,840 $ — Commercial real estate 25,386 — One-to-four 329 — Acquisition, development, and construction — — Commercial and industrial — 16,769 Other — — Total collateral-dependent loans held for investment $ 32,555 $ 16,769	The following table summarizes the extent to which collateral secures the Company’s collateral-dependent loans held for investment by collateral type as of December 31, 2020: Collateral Type (in thousands) Real Other Multi-family $ 7,525 $ — Commercial real estate 25,462 — One-to-four 557 — Acquisition, development, and construction — — Commercial and industrial — 26,487 Other — — Total collateral-dependent loans held for investment $ 33,544 26,487
Details of Interest Income on Non-Accrual Loans		The interest income that would have been recorded under the original terms of non-accrual December 31, (in thousands) 2020 2019 2018 Interest income that would have been recorded $ 4,491 $ 5,599 $ 4,145 Interest income actually recorded (939 ) (3,409 ) (3,480 ) Interest income foregone $ 3,552 $ 2,190 $ 665
Information Regarding Troubled Debt Restructurings	The following table presents information regarding the Company’s TDRs as of March 31, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 (in thousands) Accruing Non-Accrual Total Accruing Non-Accrual Total Loan Category: Multi-family $ — $ 6,840 $ 6,840 $ — $ — $ — Commercial real estate 14,894 — 14,894 14,967 — 14,967 One-to-four — 330 330 — 557 557 Commercial and industrial (1) — 10,134 10,134 — 18,761 18,761 Total $ 14,894 $ 17,304 $ 32,198 $ 14,967 $ 19,318 $ 34,285 (1) Includes $10.0 million and $17.5 million of taxi medallion-related loans at March 31, 2021 and December 31, 2020, respectively.	The following table presents information regarding the Company’s TDRs as of December 31, 2020 and 2019: December 31, 2020 December 31, 2019 (in thousands) Accruing Non- Total Accruing Non- Total Loan Category: Multi-family $ — $ — $ — — 3,577 3,577 Commercial real estate 14,967 — 14,967 — — — One-to-four — 557 557 — 584 584 Acquisition, development, and construction — — — 389 — 389 Commercial and industrial (1) — 18,761 18,761 865 35,084 35,949 Total $ 14,967 $ 19,318 $ 34,285 1,254 39,245 40,499 (1) Includes $ 17.5 27.3
Financial Effects of Troubled Debt Restructurings	The eligibility of a borrower for work-out The financial effects of the Company’s TDRs for the three months ended March 31, 2021 and 2020 are summarized as follows: For the Three Months Ended March 31, 2021 Weighted Average (dollars in thousands) Number Pre- Post- Pre- Post- Charge- Capitalized Loan Category: Multi-family 1 $ 7,515 $ 7,515 3.13 % 3.25 % $ — $ — For the Three Months Ended March 31, 2020 Weighted Average (dollars in thousands) Number Pre- Post- Pre- Post- Charge- Capitalized Loan Category: Commercial and industrial 8 $ 1,920 $ 1,572 3.29 % 3.24 % $ 348 $ —	The financial effects of the Company’s TDRs for the twelve months ended December 31, 2020, 2019 and 2018 are summarized as follows: For the Twelve Months Ended December 31, 2020 Weighted Average (dollars in thousands) Number Pre- Post- Pre- Post- Charge- Capitalized Loan Category: Commercial real estate 1 $ 15,119 $ 15,119 8.00 % 3.50 % $ — $ — Commercial and industrial 42 8,912 7,471 2.36 2.23 1,441 — Total 43 $ 24,031 $ 22,590 $ 1,441 $ — For the Twelve Months Ended December 31, 2019 Weighted Average (dollars in thousands) Number Pre- Post- Pre- Post- Charge- Capitalized Loan Category: One-to-four 1 131 131 5.50 5.50 — 3 Commercial and industrial 72 35,156 30,685 4.31 4.37 4,471 — Total 73 $ 35,287 $ 30,816 $ 4,471 $ 3 For the Twelve Months Ended December 31, 2018 Weighted Average (dollars in thousands) Number Pre- Post- Pre- Post- Charge- Capitalized Loan Category: Acquisition, development, and construction 1 $ 900 $ 900 4.50 % 4.50 % $ — $ — Commercial and industrial 21 7,763 5,455 3.25 3.13 2,308 — Total 22 $ 8,663 $ 6,355 $ 2,308 $ —

Allowance for Credit Losses o_2

Allowance for Credit Losses on Loans and Leases (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Summary of Additional Information about Nonaccrual Loans	The following table presents additional information about the Company’s nonaccrual loans at March 31, 2021: (in thousands) Recorded Related Interest Nonaccrual loans with no related allowance: Multi-family $ 6,840 $ — $ 81 Commercial real estate 10,491 — — One-to-four 330 — 3 Acquisition, development, and construction — — — Other 10,205 — 18 Total nonaccrual loans with no related allowance $ 27,866 $ — $ 102 Nonaccrual loans with an allowance recorded: Multi-family $ 3,048 $ 435 $ — Commercial real estate 1,082 84 2 One-to-four 1,137 365 3 Acquisition, development, and construction — — — Other 45 20 1 Total nonaccrual loans with an allowance recorded $ 5,312 $ 904 $ 6 Total nonaccrual loans: Multi-family $ 9,888 $ 435 $ 81 Commercial real estate 11,573 84 2 One-to-four 1,467 365 6 Acquisition, development, and construction — — — Other 10,250 20 19 Total nonaccrual loans $ 33,178 $ 904 $ 108 The following table presents additional information about the Company’s nonaccrual loans at December 31, 2020: (in thousands) Recorded Related Interest Nonaccrual loans with no related allowance: Multi-family $ — $ — $ — Commercial real estate 2,256 — — One-to-four 557 — 21 Acquisition, development, and construction — — — Other 19,821 — 820 Total nonaccrual loans with no related allowance $ 22,634 $ — $ 841 Nonaccrual loans with an allowance recorded: Multi-family $ 4,068 $ 589 $ 28 Commercial real estate 9,886 133 52 One-to-four 1,139 370 14 Acquisition, development, and construction — — — Other 58 18 5 Total nonaccrual loans with an allowance recorded $ 15,151 $ 1,110 $ 99 Total nonaccrual loans: Multi-family $ 4,068 $ 589 $ 28 Commercial real estate 12,142 133 52 One-to-four 1,696 370 35 Acquisition, development, and construction — — — Other 19,879 18 825 Total nonaccrual loans $ 37,785 $ 1,110 $ 940	The following table presents additional information about the Company’s nonaccrual loans at December 31, 2020: (in thousands) Recorded Related Interest Nonaccrual loans with no related allowance: Multi-family $ — $ — $ — Commercial real estate 2,256 — — One-to-four 557 — 21 Acquisition, development, and construction — — — Other 19,821 — 820 Total nonaccrual loans with no related allowance $ 22,634 $ — $ 841 Nonaccrual loans with an allowance recorded: Multi-family $ 4,068 $ 589 $ 28 Commercial real estate 9,886 133 52 One-to-four 1,139 370 14 Acquisition, development, and construction — — — Other 58 18 5 Total nonaccrual loans with an allowance recorded $ 15,151 $ 1,110 $ 99 Total nonaccrual loans: Multi-family $ 4,068 $ 589 $ 28 Commercial real estate 12,142 133 52 One-to-four 1,696 370 35 Acquisition, development, and construction — — — Other 19,879 18 825 Total nonaccrual loans $ 37,785 $ 1,110 $ 940
Summary of Additional Information about Impaired Loans		The following table presents additional information about the Company’s impaired loans at December 31, 2019: (in thousands) Recorded Unpaid Related Average Interest Impaired loans with no related allowance: Multi-family $ 3,577 $ 6,790 $ — $ 4,336 $ 266 Commercial real estate 14,717 19,832 — 6,140 371 One-to-four 584 602 — 811 21 Acquisition, development, and construction 389 1,289 — 3,508 364 Other 37,669 114,636 — 39,598 2,494 Total impaired loans with no related allowance $ 56,936 $ 143,149 $ — $ 54,393 $ 3,516 Impaired loans with an allowance recorded: Multi-family $ — $ — $ — $ — $ — Commercial real estate — — — — — One-to-four — — — — — Acquisition, development, and construction — — — — — Other 1,445 4,173 116 4,111 13 Total impaired loans with an allowance recorded $ 1,445 $ 4,173 $ 116 $ 4,111 $ 13 Total impaired loans: Multi-family $ 3,577 $ 6,790 $ — $ 4,336 $ 266 Commercial real estate 14,717 19,832 — 6,140 371 One-to-four 584 602 — 811 21 Acquisition, development, and construction 389 1,289 — 3,508 364 Other 39,114 118,809 116 43,709 2,507 Total impaired loans $ 58,381 $ 147,322 $ 116 $ 58,504 $ 3,529
Non-Covered Loans
Summary of Activity in Allowance for Loan and Lease Losses	The following table summarizes activity in the allowance for credit losses on loans and leases for the periods indicated: For the Three Months Ended March 31, 2021 2020 (in thousands) Mortgage Other Total Mortgage Other Total Balance, beginning of period $ 176,538 $ 17,505 $ 194,043 $ 122,695 $ 24,943 $ 147,638 Impact of CECL adoption — — — (178 ) 2,089 1,911 Adjusted balance, beginning of period 176,538 17,505 194,043 122,517 27,032 149,549 Charge-offs (658 ) (3,666 ) (4,324 ) — (10,385 ) (10,385 ) Recoveries 20 4,821 4,841 11 178 189 Provision for credit losses 527 2,671 3,198 18,786 4,105 22,891 Balance, end of period $ 176,427 $ 21,331 $ 197,758 $ 141,314 $ 20,930 $ 162,244	The following table summarizes activity in the allowance for loan and lease losses for the periods indicated: Twelve Months Ended December 31, 2020 2019 (in thousands) Mortgage Other Total Mortgage Other Total Balance, beginning of period $ 122,694 $ 24,944 $ 147,638 $ 130,983 $ 28,837 $ 159,820 Impact of CECL adoption 99 1,812 1,911 — — — Adjusted balance, beginning of period 122,793 26,756 149,549 130,983 28,837 159,820 Charge-offs (1,872 ) (20,306 ) (22,178 ) (1,613 ) (18,694 ) (20,307 ) Recoveries 1,172 2,221 3,393 61 959 1,020 Provision for (recovery of) credit losses on loans and leases 54,445 8,834 63,279 (6,737 ) 13,842 7,105 Balance, end of period $ 176,538 $ 17,505 $ 194,043 $ 122,694 $ 24,944 $ 147,638

Leases (Tables)

Leases (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Components of Lease Income	The components of lease income were as follows: (in thousands) For the Three For the Three Interest income on lease financing (1) $ 13,871 $ 11,949 (1) Included in Interest Income – Loans and leases in the Consolidated Statements of Income and Comprehensive Income.	The components of lease income were as follows: (in thousands) For the For the Interest income on lease financing (1) $ 52,279 $ 38,087 (1) Included in Interest Income – Loans and leases in the Consolidated Statements of Income and Comprehensive Income.
Components of Net Investment in Direct Financing Leases	At March 31, 2021 and December 31, 2020, the carrying value of net investment in leases was $2.0 billion and $1.9 billion. The components of net investment in direct financing leases, including the carrying amount of the lease receivables, as well as the unguaranteed residual asset were as follows: (in thousands) March 31, December 31, Net investment in the lease – lease payments receivable $ 1,929,213 $ 1,771,097 Net investment in the lease – unguaranteed 80,349 80,093 Total lease payments $ 2,009,562 $ 1,851,190	At December 31, 2020 and December 31, 2019, the carrying value of net investment in leases was $1.9 billion and $1.4 billion. The components of net investment in direct financing leases, including the carrying amount of the lease receivables, as well as the unguaranteed residual asset were as follows: (in thousands) December 31, December 31, Net investment in the lease - lease payments receivable $ 1,771,097 $ 1,302,760 Net investment in the lease - unguaranteed residual assets 80,093 74,064 Total lease payments $ 1,851,190 $ 1,376,824
Summary of Remaining Maturity of Undiscounted Lease Receivables	The following table presents the remaining maturity analysis of the undiscounted lease receivables as of March 31, 2021, as well as the reconciliation to the total amount of receivables recognized in the Consolidated Statements of Condition: (in thousands) March 31, 2021 $ 24,349 2022 111,308 2023 342,220 2024 236,013 2025 427,495 Thereafter 868,177 Total lease payments 2,009,562 Plus: deferred origination costs 30,823 Less: unearned income (110,582 ) Total lease finance receivables, net $ 1,929,803	The following table presents the remaining maturity analysis of the undiscounted lease receivables as of December 31, 2020, as well as the reconciliation to the total amount of receivables recognized in the Consolidated Statements of Condition: (in thousands) December 31, 2021 $ 37,373 2022 171,549 2023 277,468 2024 111,378 2025 430,585 Thereafter 822,837 Total lease payments 1,851,190 Plus: deferred origination costs 32,008 Less: unearned income (116,366 ) Total lease finance receivables, net $ 1,766,832
Summary of Components of Lease Expense	The components of lease expense were as follows: (in thousands) For the Three For the Three Operating lease cost $ 6,750 $ 6,759 Sublease income (28 ) (11 ) Total lease cost $ 6,722 $ 6,748	The components of lease expense were as follows: (in thousands) For the Twelve For the Twelve Operating lease cost $ 22,721 $ 28,695 Sublease income (68 ) (105 ) Total lease cost $ 22,653 $ 28,590
Summary of Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to the leases for the following periods: (in thousands) For the Three For the Three Cash paid for amounts included in the measurement Operating cash flows from operating leases $ 6,750 $ 6,759	Supplemental cash flow information related to the leases for the following periods: (in thousands) For the Twelve For the Twelve Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 22,721 $ 28,695
Summary of Supplemental Balance Sheet Information Related to Leases	Supplemental balance sheet information related to the leases for the following periods: (in thousands, except lease term and discount rate) March 31, December 31, Operating Leases: Operating lease right-of-use 262,196 $ 266,864 Operating lease liabilities 262,169 266,846 Weighted average remaining lease term 16 years 16 years Weighted average discount rate 3.08 % 3.12 %	Supplemental balance sheet information related to the leases for the following periods: (in thousands, except lease term and discount rate) December 31, December 31, Operating Leases: Operating lease right-of-use 266,864 $ 286,194 Operating lease liabilities 266,846 285,991 Weighted average remaining lease term 16 years 17 years Weighted average discount rate% 3.12 % 3.23 %
Summary of Maturities of Lease Liabilities	Maturities of lease liabilities: March 31, (in thousands) 2021 $ 20,099 2022 25,893 2023 25,435 2024 24,764 2025 24,073 Thereafter 222,215 Total lease payments 342,479 Less: imputed interest (80,310 ) Total present value of lease liabilities $ 262,169	(in thousands) December 31, Maturities of lease liabilities: 2021 $ 26,961 2022 25,994 2023 25,545 2024 24,884 2025 24,113 Thereafter 223,503 Total lease payments 351,000 Less: imputed interest (84,154 ) Total present value of lease liabilities $ 266,846

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2020
Banking And Thrift Disclosure [Abstract]
Weighted Average Interest Rates for Each Type of Deposit	The following table sets forth the weighted average interest rates for each type of deposit at December 31, 2020 and 2019: December 31, 2020 2019 (dollars in thousands) Amount Percent Weighted Amount Percent Weighted Interest-bearing checking and money market accounts $ 12,610,073 38.87 % 0.28 % $ 10,230,144 32.32 % 1.30 % Savings accounts 6,415,608 19.78 0.41 4,780,007 15.10 0.75 Certificates of deposit 10,330,680 31.85 0.83 14,214,858 44.90 2.30 Non-interest-bearing 3,080,452 9.50 — 2,432,123 7.68 — Total deposits $ 32,436,813 100.00 % 0.45 % $ 31,657,132 100.00 % 1.57 %
Scheduled Maturities of Certificates of Deposit Intangibles	The scheduled maturities of certificates of deposit (“CDs”) at December 31, 2020 were as follows: (in thousands) 1 year or less $ 9,120,243 More than 1 year through 2 years 708,342 More than 2 years through 3 years 313,682 More than 3 years through 4 years 187,089 More than 4 years through 5 years 1,009 Over 5 years 315 Total CDs $ 10,330,680
Core Deposit Intangibles in Amounts of One Hundred Thousand or more, by Remaining Term to Maturity	The following table presents a summary of CDs in amounts of $100,000 or more by remaining term to maturity, at December 31, 2020: CDs of $100,000 or More Maturing Within (in thousands) 3 Months Over 3 to Over 6 to Over Total Total $ 2,548,901 $ 3,094,530 $ 717,291 $ 384,860 $ 6,745,582

Borrowed Funds (Tables)

Borrowed Funds (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Summary of Borrowed Funds	The following table summarizes the Company’s borrowed funds at the dates indicated: (in thousands) March 31, December 31, Wholesale Borrowings: FHLB advances $ 14,302,661 $ 14,627,661 Repurchase agreements 800,000 800,000 Total wholesale borrowings $ 15,102,661 $ 15,427,661 Junior subordinated debentures 360,362 360,259 Subordinated notes 295,764 295,624 Total borrowed funds $ 15,758,787 $ 16,083,544	The following table summarizes the Company’s borrowed funds at December 31, 2020 and 2019: December 31, (in thousands) 2020 2019 Wholesale borrowings: FHLB advances $ 14,627,661 $ 13,102,661 Repurchase agreements 800,000 800,000 Total wholesale borrowings $ 15,427,661 $ 13,902,661 Junior subordinated debentures 360,259 359,866 Subordinated notes 295,624 295,066 Total borrowed funds $ 16,083,544 $ 14,557,593
Summary of Repurchase Agreements Accounted for Secured Borrowings	The following table summarizes the Company’s repurchase agreements accounted for as secured borrowings at March 31, 2021: Remaining Contractual Maturity of the Agreements (in thousands) Overnight and Up to 30–90 Days Greater than GSE obligations $ — $ — $ — $ 800,000
Analysis of Contractual Maturities of Outstanding Federal Home Loan Bank Advances		The contractual maturities and the next call dates of FHLB advances outstanding at December 31, 2020 were as follows: Contractual Earlier of Contractual (dollars in thousands) Year Amount Weighted (1) Amount Weighted (1) 2021 $ 3,272,661 0.87 % $ 8,952,661 1.73 % 2022 550,000 1.31 2,150,000 1.43 2023 2,525,000 0.85 2,725,000 0.91 2024 800,000 0.53 800,000 0.53 2028 4,350,000 2.40 — — 2029 3,130,000 1.55 — — Total FHLB advances $ 14,627,661 1.47 $ 14,627,661 1.47 (1) Does not included the effect interest rate swap agreements.
Analysis of Contractual Maturities of Outstanding Repurchase Agreements Accounted for as Secured Borrowings		The following table presents an analysis of the contractual maturities and next call dates of the Company’s outstanding repurchase agreements accounted for as secured borrowings at December 31, 2020: Contractual Maturity Earlier of Contractual (dollars in thousands) Year Amount Weighted Amount Weighted 2021 $ — — % $ 400,000 2.31 % 2022 — — 400,000 2.16 2028 300,000 2.37 — — 2029 500,000 2.16 — — $ 800,000 2.24 $ 800,000 2.24
Details of Repurchase Agreements		The following table provides the contractual maturity and weighted average interest rate of repurchase agreements, and the amortized cost and fair value of the securities collateralizing the repurchase agreements, at December 31, 2020: Mortgage-Related and GSE Debentures and U.S. (dollars in thousands) Period of Maturity Amount Weighted Amortized Fair Value Amortized Fair Value Greater than 90 days $ 800,000 2.24 % $ 286,198 $ 304,261 $ 571,182 $ 573,344
Junior Subordinated Debentures Outstanding	The following junior subordinated debentures were outstanding at March 31, 2021: Issuer Interest Junior Capital Date of Stated First (dollars in thousands) New York Community Capital Trust V 6.00 % $ 146,436 $ 140,085 Nov. 4, 2002 Nov. 1, 2051 Nov. 4, 2007 (1) New York Community Capital Trust X 1.78 123,712 120,000 Dec. 14, 2006 Dec. 15, 2036 Dec. 15, 2011 (2) PennFed Capital Trust III 3.43 30,928 30,000 June 2, 2003 June 15, 2033 June 15, 2008 (2) New York Community Capital Trust XI 1.85 59,286 57,500 April 16, 2007 June 30, 2037 June 30, 2012 (2) Total junior subordinated debentures $ 360,362 $ 347,585 (1) Callable subject to certain conditions as described in the prospectus filed with the SEC on November 4, 2002. (2) Callable from this date forward.	The following junior subordinated debentures were outstanding at December 31, 2020: Issuer Interest Junior Capital Date of Stated First Optional (dollars in thousands) New York Community Capital Trust V (BONUSESSM Units) 6.00 % $ 146,333 $ 139,982 Nov. 4, 2002 Nov. 1, 2051 Nov. 4, 2007 (1) New York Community Capital Trust X 1.82 123,712 120,000 Dec. 14, 2006 Dec. 15, 2036 Dec. 15, 2011 (2) PennFed Capital Trust III 3.47 30,928 30,000 June 2, 2003 June 15, 2033 June 15, 2008 (2) New York Community Capital Trust XI 1.89 59,286 57,500 April 16, 2007 June 30, 2037 June 30, 2012 (2) Total junior subordinated debentures $ 360,259 $ 347,482 (1) Callable subject to certain conditions as described in the prospectus filed with the SEC on November 4, 2002. (2) Callable from this date forward.
Subordinated Debt
Junior Subordinated Debentures Outstanding	At March 31, 2021 and December 31, 2020, the Company had $295.8 million and $295.6 million, respectively, of fixed-to-floating Date of Original Issue Stated Interest (1) Original (dollars in thousands) Nov. 6, 2018 Nov. 6, 2028 5.90 % $ 300,000 (1) From and including the date of original issuance to, but excluding November 6, 2023, the Notes will bear interest at an initial rate of 5.90% per annum payable semi-annually. Unless redeemed, from and including November 6, 2023 to but excluding the maturity date, the interest rate will reset quarterly to an annual interest rate equal to the then-current three-month LIBOR rate plus 278 basis points payable quarterly.	At December 31, 2020 and 2019, the Company had $295.6 million and $295.1 million, respectively, of fixed-to-floating Date of Original Issue Stated Maturity Interest Rate (1) Original Issue (dollars in thousands) Nov. 6, 2018 Nov. 6, 2028 5.90 % $ 300,000 (1) From and including the date of original issuance to, but excluding November 6, 2023, the Notes will bear interest at an initial rate of 5.90% per annum payable semi-annually. Unless redeemed, from and including November 6, 2023 to but excluding the maturity date, the interest rate will reset quarterly to an annual interest rate equal to the then-current three-month LIBOR rate plus 278 basis point payable quarterly.

Federal, State And Local Taxes

Federal, State And Local Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Components of Net Deferred Tax Asset (Liability)	The following table summarizes the components of the Company’s net deferred tax asset (liability) at December 31, 2020 and 2019: December 31, (in thousands) 2020 2019 Deferred Tax Assets: Allowance for credit losses on loans and leases $ 53,260 $ 40,584 Compensation and related benefit obligations 20,760 19,401 Non-accrual 672 624 Net operating loss carryforwards 5,682 19,750 Other 17,240 12,169 Gross deferred tax assets 97,614 92,528 Valuation allowance — — Deferred tax asset after valuation allowance $ 97,614 $ 92,528 Deferred Tax Liabilities: Amortizable intangibles $ (2,775 ) $ (2,480 ) Acquisition accounting and fair value adjustments on securities (including OTTI) (12,407 ) (9,742 ) Premises and equipment (6,385 ) (7,578 ) Prepaid pension cost (24,412 ) (22,739 ) Fair value adjustments on loans (92,340 ) (3,209 ) Leases (370,305 ) (237,429 ) Other (8,880 ) (10,782 ) Gross deferred tax liabilities $ (517,504 ) $ (293,959 ) Net deferred tax liability $ (419,890 ) $ (201,431 )
Income Tax Expense (Benefit)	The following table summarizes the Company’s income tax expense for the years ended December 31, 2020, 2019, and 2018: December 31, (in thousands) 2020 2019 2018 Federal – current $ (147,691 ) $ 4,069 $ 89,187 State and local – current 5,044 23,382 22,868 Total current (142,647 ) 27,451 112,055 Federal – deferred 189,826 100,971 13,058 State and local – deferred 29,516 (158 ) 10,139 Total deferred 219,342 100,813 23,197 Income tax expense reported in net income 76,695 128,264 135,252 Income tax expense reported in stockholders’ equity related to: Securities available-for-sale 15,648 16,142 (32,162 ) Pension liability adjustments 293 5,033 4,897 Cash flow hedge (12,852 ) 333 — Non-credit — — 821 Adoption of ASU 2016-13 (3,972 ) — — Total income taxes $ 75,812 149,772 108,808
Reconciliation of Statutory Federal Income Tax Expense (Benefit) Reported in Net Income to Combined Actual Income Tax Expense (Benefit)	The following table presents a reconciliation of statutory federal income tax expense (benefit) to combined actual income tax expense (benefit) reported in net income for the years ended December 31, 2020, 2019, and 2018: December 31, (in thousands) 2020 2019 2018 Statutory federal income tax at 21%, 21% and 21%, respectively $ 123,439 $ 109,894 $ 117,111 State and local income taxes, net of federal income tax effect 27,303 18,346 24,451 Effect of tax law changes (73,103 ) — 1,625 Non-deductible 7,857 6,938 8,852 Effect of tax deductibility of ESOP (3,208 ) (3,163 ) (3,116 ) Non-taxable (6,726 ) (5,981 ) (5,957 ) Federal tax credits (1,290 ) (750 ) (531 ) Adjustments relating to prior tax years 634 373 (7,246 ) Other, net 1,789 2,607 63 Total income tax expense $ 76,695 $ 128,264 $ 135,252
Changes in Liability for Unrecognized Gross Tax Benefits	The following table summarizes changes in the liability for unrecognized gross tax benefits for the years ended December 31, 2020, 2019, and 2018: December 31, (in thousands) 2020 2019 2018 Uncertain tax positions at beginning of year $ 35,749 $ 33,357 $ 33,681 Additions for tax positions relating to current-year operations 830 925 — Additions for tax positions relating to prior tax years 1,547 2,036 1,660 Subtractions for tax positions relating to prior tax years (306 ) (569 ) (1,984 ) Reductions in balance due to settlements — — — Uncertain tax positions at end of year $ 37,820 $ 35,749 $ 33,357

Derivative and Hedging Activi_2

Derivative and Hedging Activities (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Cumulative Basis Adjustment for Fair Value Hedges	As of March 31, 2021, the following amounts were recorded on the balance sheet related to cumulative basis adjustment for fair value hedges: (in thousands) March 31, 2021 Line Item in the Consolidated Statements of Condition in which the Hedge Carrying Cumulative Amount of Fair Value Hedging Adjustments Total loans and leases, net (1) $ 2,047,999 $ 47,999 (1) These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At March 31, 2021, the amortized cost basis of the closed portfolios used in these hedging relationships was $3.4 billion; the cumulative basis adjustments associated with these hedging relationships was $48.0 million; and the amount of the designated hedged items was $2.0 billion. As of December 31, 2020, the following amounts were recorded on the balance sheet related to cumulative basis adjustment for fair value hedges: (in thousands) December 31, 2020 Line Item in the Consolidated Statements of Condition in which the Hedge Carrying Cumulative Amount of Fair Value Hedging Adjustments Total loans and leases, net (1) $ 2,073,214 $ 73,214 (1) These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At December 31, 2020 the amortized cost basis of the closed portfolios used in these hedging relationships was $3.6 billion; the cumulative basis adjustments associated with these hedging relationships was $73.2 million; and the amount of the designated hedged items was $2.0 billion.	As of December 31, 2020, the following amounts were recorded on the balance sheet related to cumulative basis adjustment for fair value hedges. (in thousands) December 31, 2020 December 31, 2019 Line Item in the Consolidated Statements of Carrying Cumulative Carrying Cumulative Total loans and leases, net (1) $ 2,073,214 $ 73,214 $ 2,053,483 $ 53,483 (1) These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At December 31, 2020, the amortized cost basis of the closed portfolios used in these hedging relationships was $3.6 billion; the cumulative basis adjustments associated with these hedging relationships was $73.2 million; and the amount of the designated hedged items was $2.0 billion.
Information Regarding Derivative Financial Instruments	The following table sets forth information regarding the Company’s derivative financial instruments at March 31, 2021 and December 31, 2020: Notional Other Other Derivatives designated as fair value hedging instruments: Interest rate swap $ 2,000,000 $ — $ — Total derivatives designated as fair value hedging instruments $ 2,000,000 $ — $ —	The following table sets forth information regarding the Company’s derivative financial instruments at December 31, 2020. December 31, 2020 Fair Value (in thousands) Notional Other Other Derivatives designated as fair value hedging instruments: Interest rate swap $ 2,000,000 $ — $ — Total derivatives designated as fair value hedging instruments $ 2,000,000 $ — $ —
Effect of Derivative Instruments on Consolidated Statements of Income and Comprehensive Income	The following table sets forth the effect of derivative instruments on the Consolidated Statements of Income and Comprehensive Income for the periods indicated. (in thousands) For the Three For the Three Derivative – interest rate swap: Interest income $ 25,215 $ (28,130 ) Hedged item – loans: Interest income $ (25,215 ) $ 28,130	The following table sets forth the effect of derivative instruments on the Consolidated Statements of Income and Comprehensive Income for the periods indicated. (in thousands) For the Twelve For the Twelve Derivative – interest rate swap: Interest income $ (19,731 ) $ (53,483 ) Hedged item – loans: Interest income $ 19,731 $ 53,483
Information about Interest Rate Swaps Designated as Cash Flow Hedges	The following table summarizes information about the interest rate swaps designated as cash flow hedges at March 31, 2021 and December 31, 2020: (dollars in thousands) March 31, December 31, Notional amounts $ 2,250,000 $ 2,250,000 Cash collateral posted 35,109 45,532 Weighted average pay rates 1.27 % 1.27 % Weighted average receive rates 0.20 % 0.23 % Weighted average maturity 1.7 years 1.9 years	The following table summarizes information about the interest rate swaps designated as cash flow hedges at December 31, 2020 and December 31, 2019: (dollars in thousands) December 31, December 31, Notional amounts $ 2,250,000 $ 800,000 Cash collateral posted 45,532 1,185 Weighted average pay rates 1.27 % 1.62 % Weighted average receive rates 0.23 % 1.90 % Weighted average maturity 1.9 years 2.5 years
Effect of Cash Flow Derivative Instruments on AOCL	The following table presents the effect of the Company’s cash flow derivative instruments on AOCL for the three months ended March 31, 2021 and 2020: (in thousands) For the Three For the Three Amount of gain (loss) recognized in AOCL $ 4,532 $ (49,285 ) Amount of gain (loss) reclassified from AOCL to interest expense 5,891 (645 )	The following table presents the effect of the Company’s cash flow derivative instruments on AOCL for the year ending December 31, 2020: (in thousands) For the Twelve For the Twelve Amount of (loss) gain recognized in AOCL $ (58,484 ) $ 1,340 Amount of reclassified from AOCL to interest expense 11,768 (154 )

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Off-Balance-Sheet Originate Loans and Letters of Credit	The following table summarizes the Company’s off-balance (in thousands) Mortgage Loan Commitments: Multi-family and commercial real estate $ 310,261 One-to-four 801 Acquisition, development, and construction 100,599 Total mortgage loan commitments $ 411,661 Other loan commitments 2,063,559 Total loan commitments $ 2,475,220 Commercial, performance stand-by, stand-by 375,876 Total commitments $ 2,851,096
Guarantees and Indemnifications	The following table summarizes the Company’s guarantees and indemnifications at December 31, 2020: (in thousands) Expires Within One Year Expires After One Year Total Maximum Financial stand-by $ 164,498 $ 50,724 $ 215,222 $ 354,225 Performance stand-by 3,351 — 3,351 3,351 Commercial letters of credit 3,860 1,038 4,898 18,300 Total letters of credit $ 171,709 $ 51,762 $ 223,471 $ 375,876

Pension and Other Post-Retire_2

Pension and Other Post-Retirement Benefits And Employee Benefits (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Components of Net Periodic Benefit Cost	The following table sets forth certain disclosures for the Company’s pension and post-retirement plans for the periods indicated: For the Three Months Ended March 31, 2021 2020 (in thousands) Pension Post- Pension Post- Components of net periodic (credit) expense: (1) Interest cost $ 912 $ 56 $ 1,173 $ 82 Expected return on plan assets (4,016 ) — (3,876 ) — Amortization of prior-service liability — (62 ) — (62 ) Amortization of net actuarial loss 1,732 11 1,831 6 Net periodic (credit) expense $ (1,372 ) $ 5 $ (872 ) $ 26 (1) Amounts are included in G&A expense on the Consolidated Statements of Income and Comprehensive Income.
Weighted Average Assumptions used in Determining Net Periodic Benefit Cost		The following table indicates the weighted average assumptions used in determining the net periodic benefit cost for the years indicated: Years Ended December 31, 2020 2019 2018 Discount rate 3.0 % 4.1 % 3.4 % Expected rate of return on plan assets 6.5 6.8 7.0
Fair Value Measurements of Investments Held by Retirement Plan		The following table presents information about the fair value measurements of the investments held by the Retirement Plan as of December 31, 2020: (in thousands) Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable (Level 2) Significant Unobservable Inputs (Level 3) Equity: Large-cap (1) $ 23,206 $ — $ 23,206 $ — Large-cap (2) 22,997 — 22,997 — Large-cap (3) 15,146 — 15,146 — Mid-cap (4) 4,509 — 4,509 — Mid-cap (5) 6,316 — 6,316 — Mid-cap (6) 5,113 — 5,113 — Small-cap (7) 3,307 — 3,307 — Small-cap (8) 8,674 — 8,674 — Small-cap (9) 3,400 — 3,400 — International equity (10) 32,248 — 32,248 — Fixed Income Funds: Fixed Income – U.S. Core (11) 74,523 — 74,523 — Intermediate duration (12) 24,953 — 24,953 — Equity Securities: Company common stock 31,401 31,401 — — Cash Equivalents: Money market * 5,237 2,321 2,916 — $261,030 $33,722 $227,308 $— * Includes cash equivalent investments in equity and fixed income strategies. (1) This category contains large-cap (2) This category seeks long-term capital appreciation by investing primarily in large growth companies based in the U.S. (3) This fund tracks the performance of the S&P 500 Index by purchasing the securities represented in the Index in approximately the same weightings as the Index. (4) This category employs an indexing investment approach designed to track the performance of the CRSP US Mid-Cap (5) This category employs an indexing investment approach designed to track the performance of the CRSP US Mid-Cap (6) This category seeks to track the performance of the S&P Midcap 400 Index. (7) This category consists of a selection of investments based on the Russell 2000 Value Index. (8) This category consists of a mutual fund invested in small cap growth companies along with a fund invested in a selection of investments based on the Russell 2000 Growth Index. (9) This category consists of a mutual fund investing in readily marketable securities of U.S. companies with market capitalizations within the smallest 10% of the market universe, or smaller than the 1000th largest US company. (10) This category invests primarily in medium to large non-US (11) This category currently includes equal investments in three mutual funds, two of which usually hold at least 80% of fund assets in investment grade fixed income securities, seeking to outperform the Barclays US Aggregate Bond Index while maintaining a similar duration to that index. The third fund targets investments of 50% or more in mortgage-backed securities guaranteed by the US government and its agencies. (12) This category consists of a mutual fund which invest in a diversified portfolio of high-quality bonds and other fixed income securities, including U.S. Government obligations, mortgage-related and asset backed securities, corporate and municipal bonds, CMOs, and other securities mostly rated A or better.
Weighted Average Asset Allocations for Retirement Plan		The asset allocations for the Retirement Plan as of December 31, 2020 and 2019 were as follows: At December 31, 2020 2019 Equity securities 60 % 58 % Debt securities 38 40 Cash equivalents 2 2 Total 100 % 100 %
Expected Future Annuity Payments by Retirement Plan		The following annuity payments, which reflect expected future service, as appropriate, are expected to be paid by the Retirement Plan during the years indicated: (in thousands) 2021 $ 7,995 2022 8,073 2023 8,060 2024 8,302 2025 8,567 2026 and thereafter 43,728 Total $ 84,725
Weighted Average Assumptions used in Determining Net Periodic Benefit Cost of Health and Welfare Plan		The following table presents the weighted average assumptions used in determining the net periodic benefit cost for the years indicated: Years Ended December 31, 2020 2019 2018 Discount rate 2.9 % 3.9 % 3.3 % Current medical trend rate 6.5 6.5 6.5 Ultimate trend rate 5.0 5.0 5.0 Year when ultimate trend rate will be reached 2026 2025 2024
Expected Future Payments for Premiums and Claims under Health and Welfare Plan		The following amounts are currently expected to be paid for premiums and claims during the years indicated under the Health & Welfare Plan: (in thousands) 2021 $ 915 2022 881 2023 851 2024 820 2025 789 2026 and thereafter 3,451 Total $ 7,707
Pension Benefits
Information Regarding Benefit Plan		The following table sets forth certain information regarding the Retirement Plan as of the dates indicated: December 31, (in thousands) 2020 2019 Change in Benefit Obligation: Benefit obligation at beginning of year $ 159,896 $ 143,235 Interest cost 4,692 5,660 Actuarial loss (gain) 14,629 18,806 Annuity payments (6,510 ) (6,473 ) Settlements (575 ) (1,332 ) Benefit obligation at end of year $ 172,132 $ 159,896 Change in Plan Assets: Fair value of assets at beginning of year $ 242,558 $ 210,246 Actual return (loss) on plan assets 25,557 40,117 Contributions — — Annuity payments (6,510 ) (6,473 ) Settlements (575 ) (1,332 ) Fair value of assets at end of year $ 261,030 $ 242,558 Funded status (included in “Other assets”) $ 88,898 $ 82,662 Changes recognized in other comprehensive income for the year ended December 31: Amortization of prior service cost $ — $ — Amortization of actuarial loss (7,327 ) (10,035 ) Net actuarial (gain) loss arising during the year 4,577 (7,378 ) Total recognized in other comprehensive income for the year (pre-tax) $ (2,750 ) $ (17,413 ) Accumulated other comprehensive loss (pre-tax) Prior service cost $ — $ — Actuarial loss, net 73,017 75,767 Total accumulated other comprehensive loss (pre-tax) $ 73,017 $ 75,767
Components of Net Periodic Benefit Cost		The components of net periodic pension (credit) expense were as follows for the years indicated: Years Ended December 31, (in thousands) 2020 2019 2018 Components of net periodic pension expense (credit): Interest cost $ 4,692 $ 5,660 $ 5,085 Expected return on plan assets (15,505 ) (13,933 ) (16,139 ) Amortization of net actuarial loss 7,327 10,035 7,179 Net periodic pension (credit) expense $ (3,486 ) $ 1,762 $ (3,875 )
Post-Retirement Benefits
Information Regarding Benefit Plan		The following table sets forth certain information regarding the Health & Welfare Plan as of the dates indicated: December 31, (in thousands) 2020 2019 Change in benefit obligation: Benefit obligation at beginning of year $ 11,898 $ 13,583 Interest cost 327 512 Actuarial gain 238 (1,233 ) Premiums and claims paid (614 ) (964 ) Benefit obligation at end of year $ 11,849 11,898 Change in plan assets: Fair value of assets at beginning of year $ — $ — Employer contribution 614 964 Premiums and claims paid (614 ) (964 ) Fair value of assets at end of year $ — $ — Funded status (included in “Other liabilities”) $ (11,849 ) (11,898 ) Changes recognized in other comprehensive income for the year ended December 31: Amortization of prior service cost $ 249 $ 249 Amortization of actuarial gain (25 ) (124 ) Net actuarial (gain) loss arising during the year 238 (1,234 ) Total recognized in other comprehensive income for the year (pre-tax) $ 462 $ (1,109 ) Accumulated other comprehensive loss (pre-tax) Prior service cost $ (287 ) $ (536 ) Actuarial loss, net 1,679 1,466 Total accumulated other comprehensive income (pre-tax) $ 1,392 $ 930
Components of Net Periodic Benefit Cost		The following table presents the components of net periodic benefit cost for the years indicated: Years Ended December 31, (in thousands) 2020 2019 2018 Components of Net Periodic Benefit Cost: Service cost $ — $ — $ — Interest cost 327 512 513 Amortization of past-service liability (249 ) (249 ) (249 ) Amortization of net actuarial loss 25 124 309 Net periodic benefit cost $ 103 $ 387 $ 573

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Summary of Activity for Restricted Stock Awards	The following table provides a summary of activity with regard to restricted stock awards in the three months ended March 31, 2021: Number of Weighted Average Unvested at beginning of year 6,228,048 $ 12.43 Granted 3,029,949 11.15 Vested (1,918,654 ) 13.21 Canceled (59,260 ) 11.65 Unvested at end of period 7,280,083 11.70	The following table provides a summary of activity with regard to restricted stock awards in the year ended December 31, 2020: For the Year Ended Number of Weighted Unvested at beginning of year 6,516,101 $ 13.31 Granted 2,421,345 11.61 Vested (2,180,891 ) 14.06 Canceled (528,507 ) 12.88 Unvested at end of year 6,228,048 12.43
Summary of Activity for Performance-Based Restricted Stock Units	The following table provides a summary of activity with regard to Performance-Based Restricted Stock Units (“PSUs”) in the three months ended March 31, 2021: Number of Performance Expected Outstanding at beginning of year 477,872 Granted 307,479 January 1, 2021 - December 31, 2023 March 31, 2024 Outstanding at end of period 785,351

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables present assets and liabilities that were measured at fair value on a recurring basis as of March 31, 2021 and December 31, 2020, and that were included in the Company’s Consolidated Statements of Condition at those dates: Fair Value Measurements at March 31, 2021 (in thousands) Quoted Prices Significant Significant Netting Total Fair Assets: Mortgage-Related Debt Securities Available for Sale: GSE certificates $ — $ 1,209,318 $ — $ — $ 1,209,318 GSE CMOs — 1,986,270 — — 1,986,270 Total mortgage-related debt securities $ — $ 3,195,588 $ — $ — $ 3,195,588 Other Debt Securities Available for Sale: U. S. Treasury obligations $ 64,998 $ — $ — $ — $ 64,998 GSE debentures — 1,368,341 — — 1,368,341 Asset-backed securities — 520,773 — — 520,773 Municipal bonds — 26,011 — — 26,011 Corporate bonds — 882,070 — — 882,070 Foreign notes — 25,993 25,993 Capital trust notes — 94,131 — — 94,131 Total other debt securities $ 64,998 $ 2,917,319 $ — $ — $ 2,982,317 Total debt securities available for sale $ 64,998 $ 6,112,907 $ — $ — $ 6,177,905 Equity securities: Mutual funds — 15,801 — — 15,801 Total equity securities $ — $ 15,801 $ — $ — $ 15,801 Total securities $ 64,998 $ 6,128,708 $ — $ — $ 6,193,706 Fair Value Measurements at December 31, 2020 (in thousands) Quoted Prices Significant Significant Netting Total Fair Assets: Mortgage-Related Debt Securities Available for Sale: GSE certificates $ — $ 1,209,610 $ — $ — $ 1,209,610 GSE CMOs — 1,828,715 — — 1,828,715 Total mortgage-related debt securities $ — $ 3,038,325 $ — $ — $ 3,038,325 Other Debt Securities Available for Sale: U.S. Treasury obligations $ 64,985 $ — $ — $ — $ 64,985 GSE debentures — 1,158,302 — — 1,158,302 Asset-backed securities — 527,099 — — 527,099 Municipal bonds — 26,311 — — 26,311 Corporate bonds — 882,226 — — 882,226 Foreign notes — 25,538 25,538 Capital trust notes — 90,547 — — 90,547 Total other debt securities $ 64,985 $ 2,710,023 $ — $ — $ 2,775,008 Total debt securities available for sale $ 64,985 $ 5,748,348 $ — $ — $ 5,813,333 Equity securities: Preferred stock $ 15,493 $ — $ — $ — $ 15,493 Mutual funds — 16,083 — — 16,083 Total equity securities $ 15,493 $ 16,083 $ — $ — $ 31,576 Total securities $ 80,478 $ 5,764,431 $ — $ — $ 5,844,909	The following tables present assets and liabilities that were measured at fair value on a recurring basis as of December 31, 2020 and 2019, and that were included in the Company’s Consolidated Statements of Condition at those dates: Fair Value Measurements at December 31, 2020 (in thousands) Quoted Significant Significant Netting Total Assets: Mortgage-related Debt Securities Available for Sale: GSE certificates $ — $ 1,209,610 $ — $ — $ 1,209,610 GSE CMOs — 1,828,715 — — 1,828,715 Total mortgage-related debt securities $ — $ 3,038,325 $ — $ — $ 3,038,325 Other Debt Securities Available for Sale: U. S. Treasury obligations $ 64,985 $ — $ — $ — $ 64,985 GSE debentures — 1,158,302 — — 1,158,302 Asset-backed securities — 527,099 — — 527,099 Municipal bonds — 26,311 — — 26,311 Corporate bonds — 882,226 — — 882,226 Foreign notes — 25,538 — — 25,538 Capital trust notes — 90,547 — — 90,547 Total other debt securities $ 64,985 $ 2,710,023 $ — $ — $ 2,775,008 Total debt securities available for sale $ 64,985 $ 5,748,348 $ — $ — $ 5,813,333 Equity securities: — — Preferred stock $ 15,493 $ — $ — $ — $ 15,493 Mutual funds — 16,083 — — 16,083 Total equity securities $ 15,493 $ 16,083 $ — $ — $ 31,576 Total securities $ 80,478 $ 5,764,431 $ — $ — $ 5,844,909 Fair Value Measurements at December 31, 2019 (in thousands) Quoted Significant Significant Netting Total Assets: Mortgage-Related Debt Securities Available for Sale: GSE certificates $ — $ 1,552,623 $ — $ — $ 1,552,623 GSE CMOs — 1,801,112 — — 1,801,112 Total mortgage-related debt securities $ — $ 3,353,735 $ — $ — $ 3,353,735 Other Debt Securities Available for Sale: U.S. Treasury obligations $ 41,839 $ — $ — $ — $ 41,839 GSE debentures — 1,094,240 — — 1,094,240 Asset-backed securities — 373,254 — — 373,254 Municipal bonds — 26,892 — — 26,892 Corporate bonds — 867,182 — — 867,182 Capital trust notes — 95,915 — — 95,915 Total other debt securities $ 41,839 $ 2,457,483 $ — $ — $ 2,499,322 Total debt securities available for sale $ 41,839 $ 5,811,218 $ — $ — $ 5,853,057 Equity securities: — — Preferred stock $ 15,414 $ — $ — $ — $ 15,414 Mutual funds and common stock — 17,416 — — 17,416 Total equity securities $ 15,414 $ 17,416 $ — $ — $ 32,830 Total securities $ 57,253 $ 5,828,634 $ — $ — $ 5,885,887
Changes in Fair Value of Loans Held For Sale		The following table presents the changes in fair value related to initial measurement, and the subsequent changes in fair value included in earnings, for MSRs for the periods indicated: (Loss) Gain Included in Mortgage Banking (1) For the Twelve Months Ended December 31, (in thousands) 2020 2019 2018 Loans held for sale $ — $ — $ — Mortgage servicing rights — — (224 ) Total loss $ — $ — $ (224 ) (1) Included in “Non-interest
Summary of Carrying Values, Estimated Fair Values and Fair Value Measurement Levels of Financial Instruments	The following tables present assets and liabilities that were measured at fair value on a non-recurring Fair Value Measurements at March 31, 2021 Using (in thousands) Quoted Prices in Significant Other Significant Total Fair Certain nonaccrual loans (1) $ — $ — $ 23,172 $ 23,172 Other assets (2) — — 10,583 10,583 Total $ — $ — $ 33,755 $ 33,755 (1) Represents the fair value of impaired loans, based on the value of the collateral. (2) Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets and equity investments without readily determinable fair values. These equity investments are classified as Level 3 due to the infrequency of the observable prices and/or the restrictions on the shares. Fair Value Measurements at December 31, 2020 Using (in thousands) Quoted Prices in Significant Other Significant Total Fair Certain nonaccrual loans (1) $ — $ — $ 41,066 $ 41,066 Other assets (2) — — 5,655 5,655 Total $ — $ — $ 46,721 $ 46,721 (1) Represents the fair value of impaired loans, based on the value of the collateral. (2) Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets and equity investments without readily determinable fair values. These equity investments are classified as Level 3 due to the infrequency of the observable prices and/or the restrictions on the shares.	The following tables present assets that were measured at fair value on a non-recurring Fair Value Measurements at December 31, 2020 Using (in thousands) Quoted Prices Significant Significant Total Fair Certain loans (1) $ — $ — $ 41,066 $ 41,066 Other assets (2) — — 5,655 5,655 Total $ — $ — $ 46,721 $ 46,721 (1) Represents the fair value of certain loans individually assessed for impairment, based on the value of the collateral. (2) Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets and equity securities without readily determinable fair values. These equity securities are classified as Level 3 due to the infrequency of the observable prices and/or the restrictions on the shares. Fair Value Measurements at December 31, 2019 Using (in thousands) Quoted Prices Significant Significant Total Fair Certain impaired loans (1) $ — $ — $ 42,767 $ 42,767 Other assets (2) — — 1,481 1,481 Total $ — $ — $ 44,248 $ 44,248 (1) Represents the fair value of impaired loans, based on the value of the collateral. (2) Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets.
Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	The following tables summarize the carrying values, estimated fair values, and fair value measurement levels of financial instruments that were not carried at fair value on the Company’s Consolidated Statements of Condition at March 31, 2021 and December 31, 2020: March 31, 2021 Fair Value Measurement Using (in thousands) Carrying Estimated Quoted Prices Significant Significant Financial Assets: Cash and cash equivalents $ 2,722,915 $ 2,722,915 $ 2,722,915 $ — $ — FHLB stock (1) 698,984 698,984 — 698,984 — Loans, net 43,068,816 42,433,118 — — 42,433,118 Financial Liabilities: Deposits $ 34,197,136 $ 34,215,071 $ 24,582,838 (2) $ 9,632,233 (3) $ — Borrowed funds 15,758,787 16,475,503 — 16,475,503 — (1) Carrying value and estimated fair value are at cost. (2) Interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing (3) Certificates of deposit. December 31, 2020 Fair Value Measurement Using (in thousands) Carrying Estimated Quoted Prices Significant Significant Financial Assets: Cash and cash equivalents $ 1,947,931 $ 1,947,931 $ 1,947,931 $ — $ — FHLB stock (1) 714,005 714,005 — 714,005 — Loans, net 42,806,691 42,376,214 — $ — 42,376,214 Financial Liabilities: Deposits $ 32,436,813 $ 32,466,013 $ 22,106,133 (2) $ 10,359,880 (3) $ — Borrowed funds 16,083,544 16,794,338 — 16,794,338 — (1) Carrying value and estimated fair value are at cost. (2) Interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing (3) Certificates of deposit.	The following tables summarize the carrying values, estimated fair values, and fair value measurement levels of financial instruments that were not carried at fair value on the Company’s Consolidated Statements of Condition at December 31, 2020 and 2019: December 31, 2020 Fair Value Measurement Using (in thousands) Carrying Value Estimated Quoted Prices Significant Significant Financial Assets: Cash and cash equivalents $ 1,947,931 $ 1,947,931 $ 1,947,931 $ — $ — FHLB stock (1) 714,005 714,005 — 714,005 — Loans and leases, net 42,806,691 42,376,214 — — 42,376,214 Financial Liabilities: Deposits $ 32,436,813 $ 32,466,013 $ 22,106,133 (2) $ 10,359,880 (3) $ — Borrowed funds 16,083,544 16,794,338 — 16,794,338 — (1) Carrying value and estimated fair value are at cost. (2) Interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing (3) Certificates of deposit. December 31, 2019 Fair Value Measurement Using (in thousands) Carrying Estimated Quoted Prices Significant Significant Financial Assets: Cash and cash equivalents $ 741,870 $ 741,870 $ 741,870 $ — $ — FHLB stock (1) 647,562 647,562 — 647,562 — Loans and leases, net 41,746,517 41,699,929 — — 41,699,929 Financial Liabilities: Deposits $ 31,657,132 $ 31,713,945 $ 17,442,274 (2) $ 14,271,671 (3) $ — Borrowed funds 14,557,593 14,882,776 — 14,882,776 — (1) Carrying value and estimated fair value are at cost. (2) Interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing (3) Certificates of deposit.

Parent Company Only Financial_2

Parent Company Only Financial Information (Tables)	12 Months Ended
	Dec. 31, 2020
Condensed Financial Information Disclosure [Abstract]
Condensed Statements of Condition	Condensed Statements of Condition December 31, (in thousands) 2020 2019 ASSETS: Cash and cash equivalents $ 151,205 $ 183,063 Investments in subsidiaries 7,333,764 7,169,066 Receivables from subsidiaries — 2,249 Other assets 23,342 23,338 Total assets $ 7,508,311 $ 7,377,716 LIABILITIES AND STOCKHOLDERS’ EQUITY: Junior subordinated debentures $ 360,259 $ 359,866 Subordinated notes 295,624 295,066 Other liabilities 10,784 11,090 Total liabilities 666,667 666,022 Stockholders’ equity 6,841,644 6,711,694 Total liabilities and stockholders’ equity $ 7,508,311 $ 7,377,716
Condensed Statements of Income (Loss)	Condensed Statements of Income Years Ended December 31, (in thousands) 2020 2019 2018 Interest income $ 293 $ 668 $ 500 Dividends received from subsidiaries 380,000 380,000 380,000 Other income 582 716 793 Gross income 380,875 381,384 381,293 Operating expenses 51,730 49,926 59,372 Income before income tax benefit and equity in underdistributed earnings of subsidiaries 329,145 331,458 321,921 Income tax benefit 14,163 13,669 16,616 Income before equity in underdistributed earnings of subsidiaries 343,308 345,127 338,537 Equity in underdistributed earnings of subsidiaries 167,801 49,916 83,880 Net income $ 511,109 $ 395,043 $ 422,417
Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Years Ended December 31, (in thousands) 2020 2019 2018 CASH FLOWS FROM OPERATING ACTIVITIES: Net income $ 511,109 $ 395,043 $ 422,417 Change in other assets (4 ) 386 256 Change in other liabilities (306 ) (2,608 ) (1,152 ) Other, net 30,352 32,776 36,677 Equity in underdistributed earnings of subsidiaries (167,801 ) (49,916 ) (83,880 ) Net cash provided by operating activities 373,350 375,681 374,318 CASH FLOWS FROM INVESTING ACTIVITIES: Change in receivable from subsidiaries, net 2,249 4,206 (1,705 ) Net cash provided by (used in) investing activities 2,249 4,206 (1,705 ) CASH FLOWS FROM FINANCING ACTIVITIES: Treasury stock repurchased (59,022 ) (75,220 ) (163,249 ) Cash dividends paid on common and preferred stock (348,435 ) (350,222 ) (365,889 ) Proceeds from issuance of subordinated notes — — 294,607 Net cash used in financing activities (407,457 ) (425,442 ) (234,531 ) Net (decrease) increase in cash and cash equivalents (31,858 ) (45,555 ) 138,082 Cash and cash equivalents at beginning of year 183,063 228,618 90,536 Cash and cash equivalents at end of year $ 151,205 $ 183,063 $ 228,618

Capital (Tables)

Capital (Tables)	12 Months Ended
	Dec. 31, 2020
Banking Regulation, Total Capital [Abstract]
Regulatory Capital Ratios for Company in Comparison With Minimum Amounts and Ratios Required by Federal Reserve Board of Governors	The following tables present the regulatory capital ratios for the Company at December 31, 2020 and 2019, in comparison with the minimum amounts and ratios required by the FRB for capital adequacy purposes: Risk-Based Capital At December 31, 2020 Common Equity Tier 1 Total Leverage Capital (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio Total capital $ 3,962,399 9.72 % $ 4,465,239 10.95 % $ 5,289,611 12.97 % $ 4,465,239 8.52 % Minimum for capital adequacy purposes 1,834,858 4.50 2,446,478 6.00 3,261,970 8.00 2,095,846 4.00 Excess $ 2,127,541 5.22 % $ 2,018,761 4.95 % $ 2,027,641 4.97 % $ 2,369,393 4.52 % Risk-Based Capital At December 31, 2019 Common Equity Tier 1 Total Leverage Capital (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio Total capital $ 3,818,311 9.91 % $ 4,321,151 11.22 % $ 5,111,990 13.27 % $ 4,321,151 8.66 % Minimum for capital adequacy purposes 1,733,826 4.50 2,311,768 6.00 3,082,358 8.00 1,996,966 4.00 Excess $ 2,084,485 5.41 % $ 2,009,383 5.22 % $ 2,029,632 5.27 % $ 2,324,185 4.66 % At December 31, 2020, our total risk-based capital ratio exceeded the minimum requirement for capital adequacy purposes by 497 basis points and the fully phased-in
Actual Capital Amounts and Ratios for Community Bank in Comparison to Minimum Amounts and Ratios Required	The following tables present the actual capital amounts and ratios for the Bank at December 31, 2020 and 2019 in comparison to the minimum amounts and ratios required for capital adequacy purposes. Risk-Based Capital At December 31, 2020 Common Tier 1 Total Leverage (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio Total capital $ 4,964,055 12.18 % $ 4,964,055 12.18 % $ 5,145,321 12.62 % $ 4,964,055 9.48 % Minimum for capital adequacy purposes 1,834,112 4.50 2,445,483 6.00 3,260,643 8.00 2,095,175 4.00 Excess $ 3,129,943 7.68 % $ 2,518,572 6.18 % $ 1,884,678 4.62 % $ 2,868,880 5.48 % Risk-Based Capital At December 31, 2019 Common Tier 1 Total Leverage (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio Total capital $ 4,785,217 12.42 % $ 4,785,217 12.42 % $ 4,933,900 12.81 % $ 4,785,217 9.59 % Minimum for capital adequacy purposes 1,733,085 4.50 2,310,780 6.00 3,081,040 8.00 1,996,288 4.00 Excess $ 3,052,132 7.92 % $ 2,474,437 6.42 % $ 1,852,860 4.81 % $ 2,788,929 5.59 %

Organization, Basis of Presen_3

Organization, Basis of Presentation, and Impact of Recent Accounting Pronouncements - Additional Information (Details) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2021USD ($)Branch$ / shares	Dec. 31, 2020Branch$ / shares	Dec. 31, 2019$ / shares	Nov. 23, 1993$ / shares
Organization and Basis of Presentation [Line Items]
Common stock, par | $ / shares	$ 0.01	$ 0.01	$ 0.01
Description of nine stock splits	($0.93 per share on a split-adjusted basis, reflecting the impact of nine stock splits between 1994 and 2004)	($0.93 per share on a split-adjusted basis, reflecting the impact of nine stock splits between 1994 and 2004).
Cumulative effect on retained earnings, reduction in tax | $	$ 10.5
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13	Accounting Standards Update 2016-13
New York Community Bank
Organization and Basis of Presentation [Line Items]
Number of branches | Branch	237	237
New York Community Bank | Corporate Segment
Organization and Basis of Presentation [Line Items]
Number of branches | Branch	19
New York Community Bank | Corporate and Other
Organization and Basis of Presentation [Line Items]
Number of branches | Branch	218
IPO
Organization and Basis of Presentation [Line Items]
Shares issued, price per share | $ / shares	$ 25			$ 25
Shares issued, price per share, split adjusted basis | $ / shares	$ 0.93	$ 0.93

Computation of Earnings per C_3

Computation of Earnings per Common Share - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 137,389	$ 92,121	$ 478,281	$ 362,215	$ 389,589
Less: Dividends paid on and earnings allocated to participating securities	(1,795)	(1,170)	(5,798)	(4,333)	(4,871)
Earnings applicable to common stock	$ 135,594	$ 90,951	$ 472,483	$ 357,882	$ 384,718
Weighted average common shares outstanding	463,292,906	464,993,970	462,605,341	465,380,010	487,287,872
Basic earnings per common share	$ 0.29	$ 0.20	$ 1.02	$ 0.77	$ 0.79
Earnings applicable to common stock	$ 135,594	$ 90,951	$ 472,483	$ 357,882	$ 384,718
Potential dilutive common shares	594,031	418,674	676,061	283,322
Total shares for diluted earnings per common share computation	463,886,937	465,412,644	463,281,402	465,663,332	487,287,872
Diluted earnings per common share and common share equivalents	$ 0.29	$ 0.20	$ 1.02	$ 0.77	$ 0.79

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail)	Jan. 01, 2020USD ($)	Mar. 31, 2021USD ($)shares	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)Segmentshares	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Significant Accounting Policies [Line Items]
Cash and cash equivalents, interest-bearing deposits in other financial institutions		$ 2,722,915,000		$ 1,947,931,000	$ 741,870,000	$ 1,474,955,000	$ 2,528,169,000
Cash and cash equivalents, interest-bearing deposits in other financial institutions, Federal Reserve Bank of New York				1,600,000,000	608,400,000
Cash and cash equivalents, federal funds sold				0	1,700,000
Cash and cash equivalents, outstanding reverse repurchase agreements				193,500,000	0
Allowance for loan and lease losses		197,758,000	$ 162,244,000	194,043,000	147,638,000	159,820,000
Retained earnings		552,566,000		494,229,000	342,023,000
Increase in allowance for credit losses on loans and leases	$ 1,900,000	4,841,000	189,000	3,393,000	1,020,000
Off-balance sheet credit exposures before adoption of CECL	12,500,000
Goodwill		2,426,379,000		$ 2,426,379,000	2,426,379,000
Number of operating segments | Segment				1
Number of reportable segments | Segment				1
Goodwill impairment				$ 0
Depreciation		5,357,000	6,407,000	23,871,000	27,096,000	32,323,000
Bank-owned life insurance		1,165,765,000		1,164,196,000	1,145,058,000
Additional purchases of BOLI					150,000,000
Bank-owned life insurance income		$ 6,890,000	$ 7,389,000	31,750,000	28,363,000	$ 28,252,000
Other real estate owned				$ 1,800,000	2,000,000
Shares available for grant | shares		8,481,554		11,913,461
Cumulative Effect, Period of Adoption, Adjustment
Significant Accounting Policies [Line Items]
Allowance for loan and lease losses					1,911,000
Taxi Medallion Loans
Significant Accounting Policies [Line Items]
Other real estate owned				$ 6,500,000	10,300,000
Premises
Significant Accounting Policies [Line Items]
Premises, furniture, fixtures, and equipment, estimated useful lives (in years)				20 years
Furniture, Fixtures and Equipment | Minimum
Significant Accounting Policies [Line Items]
Premises, furniture, fixtures, and equipment, estimated useful lives (in years)				3 years
Furniture, Fixtures and Equipment | Maximum
Significant Accounting Policies [Line Items]
Premises, furniture, fixtures, and equipment, estimated useful lives (in years)				10 years
Unfunded Commitments
Significant Accounting Policies [Line Items]
Allowance for credit losses		$ 12,300,000		$ 11,900,000	$ 461,000
Accounting Standards Update 2016-13
Significant Accounting Policies [Line Items]
Retained earnings	$ (1,900,000)
Change in accounting principle, accounting standards update, adopted [true false]				true
Change in accounting principle, accounting standards update, adoption date				Jan. 1, 2020
Accounting Standards Update 2016-13 | Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment
Significant Accounting Policies [Line Items]
Retained earnings				$ (10,500,000)
Accounting Standards Update 2020-04
Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]				true
Change in accounting principle, accounting standards update, adoption date				Mar. 31, 2020
Change in accounting principle, accounting standards update, immaterial effect [true false]				true
Accounting Standards Update 2018-13
Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]				true
Change in accounting principle, accounting standards update, adoption date				Jan. 1, 2020
Change in accounting principle, accounting standards update, immaterial effect [true false]				true
Accounting Standards Update 2017-04
Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]				true
Change in accounting principle, accounting standards update, adoption date				Jan. 1, 2020
Change in accounting principle, accounting standards update, immaterial effect [true false]				true

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Computation of Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 137,389	$ 92,121	$ 478,281	$ 362,215	$ 389,589
Less: Dividends paid on and earnings allocated to participating securities	(1,795)	(1,170)	(5,798)	(4,333)	(4,871)
Earnings applicable to common stock	$ 135,594	$ 90,951	$ 472,483	$ 357,882	$ 384,718
Weighted average common shares outstanding	463,292,906	464,993,970	462,605,341	465,380,010	487,287,872
Basic earnings per common share	$ 0.29	$ 0.20	$ 1.02	$ 0.77	$ 0.79
Earnings applicable to common stock	$ 135,594	$ 90,951	$ 472,483	$ 357,882	$ 384,718
Potential dilutive common shares	594,031	418,674	676,061	283,322
Total shares for diluted earnings per common share computation	463,886,937	465,412,644	463,281,402	465,663,332	487,287,872
Diluted earnings per common share and common share equivalents	$ 0.29	$ 0.20	$ 1.02	$ 0.77	$ 0.79

Reclassifications Out of Accu_3

Reclassifications Out of Accumulated Other Comprehensive Loss - Reclassifications of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended			12 Months Ended
		Mar. 31, 2021		Mar. 31, 2020	Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax (expense) benefit		$ 50,500		$ 14,915	$ 76,695		$ 128,264	$ 135,252
Net income		145,596		100,328	511,109		395,043	422,417
Interest expense		105,449		$ 196,575	607,851		$ 847,760	$ 658,678
Reclassifications, net of tax	[1]	(5,493)			(13,186)
Past service liability
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, before tax	[1]	62	[2]		249	[3]
Actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, before tax	[1]	(1,743)	[2]		(7,352)	[3]
Amortization of defined benefit pension
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, before tax	[1]	(1,681)			(7,103)
Tax benefit	[1]	462			1,953
Reclassifications, net of tax	[1]	(1,219)			(5,150)
Reclassification out of Accumulated Other Comprehensive Income (loss) | Unrealized gains on available-for-sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net gain on securities	[1]				683
Income tax (expense) benefit	[1]				(188)
Net income	[1]				495
Reclassification out of Accumulated Other Comprehensive Income (loss) | Unrealized gains on cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax (expense) benefit	[1]	1,617			3,236
Net income	[1]	(4,274)			(8,531)
Interest expense	[1]	$ (5,891)			$ (11,767)
[1]	Amounts in parentheses indicate expense items.
[2]	See Note 8, “Pension and Other Post-Retirement Benefits,” for additional information.
[3]	See Note 14, “Employee Benefits,” for additional information.

Securities - Summary of Portfol

Securities - Summary of Portfolio of Securities Available for Sale (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		$ 6,243,021	$ 5,743,929	[1]	$ 5,841,796	[2]
Gross Unrealized Gain		101,046	130,677	[1]	77,498	[2]
Gross Unrealized Loss		150,361	29,697	[1]	33,407	[2]
Fair Value		6,193,706	5,844,909	[1]	5,885,887	[2]
Asset-backed Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[3]		530,226		384,108
Gross Unrealized Gain	[3]		2,576
Gross Unrealized Loss	[3]		5,703		10,854
Fair Value	[3]		527,099		373,254
Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		15,814	15,814
Gross Unrealized Gain		116	269
Gross Unrealized Loss		129
Fair Value		15,801	16,083
Mutual Funds and Common Stock
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[4]				16,871
Gross Unrealized Gain	[4]				718
Gross Unrealized Loss	[4]				173
Fair Value	[4]				17,416
Mortgage-Related Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		3,191,601	2,942,332		3,313,757
Gross Unrealized Gain		69,310	99,001		47,282
Gross Unrealized Loss		65,323	3,008		7,304
Fair Value		3,195,588	3,038,325		3,353,735
Mortgage-Related Securities | GSE Certificates
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		1,183,746	1,155,436		1,530,317
Gross Unrealized Gain		40,473	54,310		26,069
Gross Unrealized Loss		14,901	136		3,763
Fair Value		1,209,318	1,209,610		1,552,623
Mortgage-Related Securities | GSE CMOs
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		2,007,855	1,786,896		1,783,440
Gross Unrealized Gain		28,837	44,691		21,213
Gross Unrealized Loss		50,422	2,872		3,541
Fair Value		1,986,270	1,828,715		1,801,112
Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		3,035,606	2,770,491		2,495,876
Gross Unrealized Gain		31,620	31,206		29,376
Gross Unrealized Loss		84,909	26,689		25,930
Fair Value		2,982,317	2,775,008		2,499,322
Debt Securities | U. S. Treasury Obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		64,993	64,984		41,820
Gross Unrealized Gain		5	1		19
Gross Unrealized Loss					0
Fair Value		64,998	64,985		41,839
Debt Securities | GSE Debentures
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		1,433,280	1,158,253		1,093,845
Gross Unrealized Gain		2,693	3,998		5,707
Gross Unrealized Loss		67,632	3,949		5,312
Fair Value		1,368,341	1,158,302		1,094,240
Debt Securities | Asset-backed Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		520,111	530,226
Gross Unrealized Gain		4,030	2,576
Gross Unrealized Loss		3,368	5,703
Fair Value		520,773	527,099
Debt Securities | Municipal Bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		25,715	25,776		26,808
Gross Unrealized Gain		482	625		559
Gross Unrealized Loss		186	90		475
Fair Value		26,011	26,311		26,892
Debt Securities | Corporate Bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		870,886	870,745		854,195
Gross Unrealized Gain		16,594	17,928		15,970
Gross Unrealized Loss		5,410	6,447		2,983
Fair Value		882,070	882,226		867,182
Debt Securities | Foreign Notes
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		25,000	25,000
Gross Unrealized Gain		993	538
Fair Value		25,993	25,538
Debt Securities | Capital Trust Notes
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		95,621	95,507		95,100
Gross Unrealized Gain		6,823	5,540		7,121
Gross Unrealized Loss		8,313	10,500		6,306
Fair Value		94,131	90,547		95,915
Mortgage Backed Securities And Other Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		6,227,207	5,712,823		5,809,633
Gross Unrealized Gain		100,930	130,207		76,658
Gross Unrealized Loss		150,232	29,697		33,234
Fair Value		6,177,905	5,813,333		5,853,057
Equity Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		15,814	31,106		32,163
Gross Unrealized Gain		116	470		840
Gross Unrealized Loss		129			173
Fair Value		$ 15,801	31,576		32,830
Equity Securities | Preferred Stock
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost			15,292		15,292
Gross Unrealized Gain			201		122
Gross Unrealized Loss					0
Fair Value			$ 15,493		$ 15,414
[1]	Excludes accrued interest receivable of $14.9 million included in other assets in the Consolidated Statements of Condition.
[2]	Excludes accrued interest receivable of $24.4 million included in other assets in the Consolidated Statements of Condition.
[3]	The underlying assets of the asset-backed securities are substantially guaranteed by the U.S. Government.
[4]	Primarily consists of mutual funds that are CRA-qualified investments.

Securities - Summary of Portf_2

Securities - Summary of Portfolio of Securities Available for Sale (Parenthetical) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Available-for-sale Securities
Schedule of Available-for-sale Securities [Line Items]
Accrued interest receivable	$ 14.8	$ 14.9	$ 24.4

Securities - Additional Informa

Securities - Additional Information (Details) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2021USD ($)Investment	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)Investment	Dec. 31, 2019USD ($)Investment	Dec. 31, 2018USD ($)
Schedule of Investments [Line Items]
Federal Home Loan Bank stock, at cost | $	[1]	$ 698,984		$ 714,005	$ 647,562
Net gains on equity securities | $		$ 483,000	$ 215,000	$ 582,000	$ 2,300	$ 2,000
Collateralized Mortgage Obligations
Schedule of Investments [Line Items]
Number of investment securities designated as having a continuous loss position for twelve months or more		4		4	3
Capital Trust Notes
Schedule of Investments [Line Items]
Number of investment securities designated as having a continuous loss position for twelve months or more		5		5	5
Asset-backed Securities
Schedule of Investments [Line Items]
Number of investment securities designated as having a continuous loss position for twelve months or more		5		7	3
Corporate Bonds
Schedule of Investments [Line Items]
Number of investment securities designated as having a continuous loss position for twelve months or more		5		3	2
Municipal Bonds
Schedule of Investments [Line Items]
Number of investment securities designated as having a continuous loss position for twelve months or more		1		1	1
US Government Agencies Securities
Schedule of Investments [Line Items]
Number of investment securities designated as having a continuous loss position for twelve months or more					7
Mortgage-Related Securities
Schedule of Investments [Line Items]
Number of investment securities designated as having a continuous loss position for twelve months or more					3
Mutual Fund
Schedule of Investments [Line Items]
Number of investment securities designated as having a continuous loss position for twelve months or more					1
[1]	Carrying value and estimated fair value are at cost.

Securities - Summary of Gross P

Securities - Summary of Gross Proceeds and Gross Realized Gains and Losses from Sale of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Gross proceeds		$ 369,972	$ 483,872	$ 361,311	$ 278,539
Gross realized gains		1,811	1,945	5,445	967
Gross realized losses		$ 1,062	$ 1,262		$ 981

Securities - Summary of Amortiz

Securities - Summary of Amortized Cost of Available-for-Sale Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Available-for-Sale Debt Securities:
Due within one year	$ 149,348	$ 176,720
Due from one to five years	637,035	615,048
Due from five to ten years	1,146,853	1,130,037
Due after ten years	4,244,669	3,891,528
Total debt securities available for sale	6,177,905	5,813,333
Mortgage-Related Securities
Available-for-Sale Debt Securities:
Due within one year	23,017	49,797
Due from one to five years	361,118	405,157
Due from five to ten years	175,554	175,689
Due after ten years	2,631,912	2,311,689
Total debt securities available for sale	$ 3,191,601	$ 2,942,332
Available-for-Sale Securities, Average Yield
Due within one year, Average Yield	3.76%	3.03%
Due from one to five years, Average Yield	3.18%	3.16%
Due from five to ten years, Average Yield	2.48%	2.48%
Due after ten years, Average Yield	1.98%	2.15%
Total securities available for sale, Average Yield	2.16%	2.32%
U.S. Government and GSE obligations
Available-for-Sale Debt Securities:
Due within one year	$ 75,943	$ 75,934
Due from one to five years	21,924	21,924
Due from five to ten years	238,052	138,053
Due after ten years	1,162,354	987,326
Total debt securities available for sale	$ 1,498,273	$ 1,223,237
Available-for-Sale Securities, Average Yield
Due within one year, Average Yield	0.54%	0.56%
Due from one to five years, Average Yield	3.52%	3.52%
Due from five to ten years, Average Yield	2.16%	2.37%
Due after ten years, Average Yield	1.53%	1.60%
Total securities available for sale, Average Yield	1.61%	1.66%
State, County, and Municipal
Available-for-Sale Debt Securities:
Due from five to ten years	$ 19,840	$ 19,898
Due after ten years	5,875	5,878
Total debt securities available for sale	$ 25,715	$ 25,776
Available-for-Sale Securities, Average Yield
Due from five to ten years, Average Yield	3.51%	3.51%	[1]
Due after ten years, Average Yield	3.33%	3.33%	[1]
Total securities available for sale, Average Yield	3.47%	3.47%	[1]
Other Debt Securities
Available-for-Sale Debt Securities:
Due within one year	$ 49,817	$ 49,704	[2]
Due from one to five years	223,181	151,873	[2]
Due from five to ten years	706,390	779,401	[2]
Due after ten years	532,230	540,500	[2]
Total debt securities available for sale	$ 1,511,618	$ 1,521,478	[2]
Available-for-Sale Securities, Average Yield
Due within one year, Average Yield	3.01%	3.02%
Due from one to five years, Average Yield	1.87%	2.22%
Due from five to ten years, Average Yield	2.03%	1.88%
Due after ten years, Average Yield	1.25%	1.29%
Total securities available for sale, Average Yield	1.76%	1.74%
[1]	Not presented on a tax-equivalent basis.
[2]	Includes corporate bonds, capital trust notes, foreign notes, and asset-backed securities.

Securities - Summary of Held-to

Securities - Summary of Held-to-Maturity and Available-for-Sale Securities Having Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value	$ 2,610,084	$ 1,095,548	$ 1,671,447
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss	133,490	9,868	18,617
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value	542,998	725,998	627,545
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss	16,871	19,829	14,790
Temporarily Impaired Available-for-Sale Securities, Total Fair Value	3,153,082	1,821,546	2,298,992
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss	150,361	29,697	33,407
Debt Securities | U.S. Government and GSE obligations
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value		58,876
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss		136
Temporarily Impaired Available-for-Sale Securities, Total Fair Value		58,876
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss		136
Debt Securities | U. S. Treasury Obligations
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value			11,917
Temporarily Impaired Available-for-Sale Securities, Total Fair Value			11,917
Debt Securities | GSE Certificates
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value	323,281	58,876	396,930
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss	14,901	136	3,718
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value			7,542
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss			45
Temporarily Impaired Available-for-Sale Securities, Total Fair Value	323,281	58,876	404,472
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss	14,901	136	3,763
Debt Securities | GSE CMOs
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value	918,257	442,207	609,502
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss	50,422	2,807	2,582
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value		73,568	133,955
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss		65	959
Temporarily Impaired Available-for-Sale Securities, Total Fair Value	918,257	515,775	743,457
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss	50,422	2,872	3,541
Debt Securities | GSE Debentures
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value	1,244,721	522,441	297,179
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss	67,633	3,949	3,916
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value			138,189
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss			1,396
Temporarily Impaired Available-for-Sale Securities, Total Fair Value	1,244,721	522,441	435,368
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss	67,633	3,949	5,312
Debt Securities | Asset-backed Securities
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value	112,149		256,619
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss	405		7,701
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value	179,063	363,618	116,635
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss	2,962	5,703	3,154
Temporarily Impaired Available-for-Sale Securities, Total Fair Value	291,212	363,618	373,254
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss	3,367	5,703	10,855
Debt Securities | Municipal Bonds
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value	8,744	8,891	9,349
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss	186	90	475
Temporarily Impaired Available-for-Sale Securities, Total Fair Value	8,744	8,891	9,349
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss	186	90	475
Debt Securities | Corporate Bonds
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value		72,024	99,300
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss		2,976	700
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value	319,590	246,528	172,717
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss	5,410	3,471	2,282
Temporarily Impaired Available-for-Sale Securities, Total Fair Value	319,590	318,552	272,017
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss	5,410	6,447	2,982
Debt Securities | Capital Trust Notes
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value	35,601	33,393	37,525
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss	8,313	10,500	6,306
Temporarily Impaired Available-for-Sale Securities, Total Fair Value	35,601	33,393	37,525
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss	8,313	$ 10,500	6,306
Equity Securities
Schedule of Investments [Line Items]
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value	11,676
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss	129
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value			11,633
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss			173
Temporarily Impaired Available-for-Sale Securities, Total Fair Value	11,676		11,633
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss	$ 129		$ 173

Loans and Leases - Composition

Loans and Leases - Composition of Loan and Lease Portfolio (Details) - USD ($) $ in Thousands		Mar. 31, 2021		Dec. 31, 2020		Mar. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 43,061,670		$ 42,821,790	[1]		$ 41,844,019	[1]
Non-Covered Loans, Percentage		100.00%		100.00%	[1]		100.00%	[1]
Net deferred loan origination costs		$ 63,469		$ 61,808			$ 50,136
Allowance for loan and lease losses		(197,758)		(194,043)		$ (162,244)	(147,638)		$ (159,820)
Total loans and leases held for investment, net		42,927,381		42,689,555			41,746,517
Loans held for sale	[2]	141,435		117,136	[3]
Total loans and leases held for investment and held for sale, net		43,068,816		42,806,691			41,746,517
Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 32,195,256		$ 32,236,385			$ 31,158,672
Non-Covered Loans, Percentage		74.77%		75.28%			74.46%
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 7,027,236		$ 6,835,763			$ 7,081,910
Non-Covered Loans, Percentage		16.32%		15.96%			16.93%
One-to-Four Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 208,108		$ 235,989			$ 380,361
Non-Covered Loans, Percentage		0.48%		0.55%			0.91%
Acquisition, Development, and Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 115,947		$ 89,790			$ 200,596
Non-Covered Loans, Percentage		0.27%		0.21%			0.48%
Mortgage Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 39,546,547	[4]	$ 39,397,927	[1],[4]		$ 38,821,539	[1]
Non-Covered Loans, Percentage		91.84%	[4]	92.00%	[1],[4]		92.78%	[1]
Allowance for loan and lease losses		$ (176,427)		$ (176,538)		$ (141,314)	$ (122,694)		$ (130,983)
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 3,509,530	[5]	$ 3,417,343	[5],[6],[7]		$ 3,014,378	[6],[7]
Non-Covered Loans, Percentage		8.15%	[5]	7.98%	[5],[7]		7.20%	[7]
Commercial and Industrial | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 1,610,550		$ 1,682,519			$ 1,742,380
Non-Covered Loans, Percentage		3.74%		3.93%			4.16%
Lease Financing, Unearned Income
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 1,898,980		$ 1,734,824			$ 1,271,998
Non-Covered Loans, Percentage		4.41%		4.05%			3.04%
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 5,593		$ 6,520			$ 8,102
Non-Covered Loans, Percentage		0.01%		0.02%			0.02%
Total Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 3,515,123		$ 3,423,863			$ 3,022,480
Total Other Loans | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 3,515,123	[4]	$ 3,423,863	[4]		$ 3,022,480
Non-Covered Loans, Percentage		8.16%	[4]	8.00%	[4]		7.22%
[1]	Excludes accrued interest receivable of $219.1 million and $116.9 million at December 31, 2020 and December 31, 2019, respectively, which is included in other assets in the Consolidated Statements of Condition.
[2]	Includes deferred loan origination fees of $3.8 million and $1.7 million at March 31, 2021 and December 31, 2020, respectively.
[3]	Includes deferred loan origination fees of $1.7 million.
[4]	Excludes accrued interest receivable of $219.0 million and $219.1 million at March 31, 2021 and December 31, 2020, respectively, which is included in other assets in the Consolidated Statements of Condition.
[5]	Includes specialty finance loans and leases of $3.2 billion and $3.0 billion, respectively, at March 31, 2021 and December 31, 2020, and other C&I loans of $350.8 million and $393.3 million, respectively, at March 31, 2021 and December 31, 2020.
[6]	Includes lease financing receivables, all of which were classified as Pass.
[7]	Includes specialty finance loans and leases of $3.0 billion and $2.6 billion, respectively, at December 31, 2020 and December 31, 2019, and other C&I loans of $393.3 million and $420.1 million, respectively, at December 31, 2020 and December 31, 2019.

Loans and Leases - Compositio_2

Loans and Leases - Composition of Loan and Lease Portfolio (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2021		Mar. 31, 2020	Dec. 31, 2020		Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans	$ 43,061,670			$ 42,821,790	[1]	$ 41,844,019	[1]
Deferred loan origination fees	3,800		$ 1,700	1,700
Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	219,000			219,100		116,900
Lease Financing, Unearned Income
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income	110,582			116,366		104,826
Non-Covered Loans	1,898,980			1,734,824		1,271,998
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans	3,509,530	[2]		3,417,343	[2],[3],[4]	3,014,378	[3],[4]
Commercial and Industrial | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans	1,610,550			1,682,519		1,742,380
Commercial and Industrial | Specialty Finance Loans | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans	3,200,000			3,000,000		2,600,000
Commercial and Industrial | Other Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans	$ 350,800			$ 393,300		$ 420,100
[1]	Excludes accrued interest receivable of $219.1 million and $116.9 million at December 31, 2020 and December 31, 2019, respectively, which is included in other assets in the Consolidated Statements of Condition.
[2]	Includes specialty finance loans and leases of $3.2 billion and $3.0 billion, respectively, at March 31, 2021 and December 31, 2020, and other C&I loans of $350.8 million and $393.3 million, respectively, at March 31, 2021 and December 31, 2020.
[3]	Includes lease financing receivables, all of which were classified as Pass.
[4]	Includes specialty finance loans and leases of $3.0 billion and $2.6 billion, respectively, at December 31, 2020 and December 31, 2019, and other C&I loans of $393.3 million and $420.1 million, respectively, at December 31, 2020 and December 31, 2019.

Loans and Leases - Additional I

Loans and Leases - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Outstanding loans to Executive officers, directors, principal shareholders, related interest and parties	$ 7,000,000		$ 37,500,000	$ 38,200,000
Delinquent loans selectively extended to certain borrowers, rate reductions, forbearance of arrears, and extension of maturity dates			$ 22,590,000	30,816,000	$ 6,355,000
CARES act of 2020 aid, election description			the Company made the election to deem that loan modifications do not result in TDRs if they are (1) related to the novel coronavirus disease (“COVID-19”); (2) executed on a loan that was not more than 30 days past due as of December 31, 2019; and (3) executed between March 1, 2020, and the earlier of (A) 60 days after the date of termination of the National Emergency or (B) December 31, 2020. This includes short-term (e.g., up to six months) modifications such as payment deferrals, fee waivers, extensions of repayment terms, or delays in payment that are insignificant. Borrowers considered current are those that are less than 30 days past due on their contractual payments at the time a modification program is implemented.
Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Delinquent loans selectively extended to certain borrowers, rate reductions, forbearance of arrears, and extension of maturity dates		$ 1,572,000	$ 7,471,000	30,685,000	5,455,000
Loan classified as non accrual TDRs	2,100,000	600,000	3,200,000		$ 194,000
C&I and One-to-Four Family
Financing Receivable, Recorded Investment [Line Items]
Loan classified as non accrual TDRs		$ 140,000		1,100,000
Residential Mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, loans in process of foreclosure			0	$ 0
Financing Receivable Troubled Debt Restructurings Rate Reductions
Financing Receivable, Recorded Investment [Line Items]
Delinquent loans selectively extended to certain borrowers, rate reductions, forbearance of arrears, and extension of maturity dates	32,100,000		18,100,000
Financing Receivable Troubled Debt Restructurings Forbearance of Arrears
Financing Receivable, Recorded Investment [Line Items]
Delinquent loans selectively extended to certain borrowers, rate reductions, forbearance of arrears, and extension of maturity dates	$ 146,000		$ 16,200,000

Loans and Leases - Quality of L

Loans and Leases - Quality of Loans Held for Investment (Details) - USD ($)	Mar. 31, 2021		Dec. 31, 2020		Mar. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Receivable	$ 43,061,670,000		$ 42,821,790,000	[1]		$ 41,844,019,000	[1]
Multi-Family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Receivable	32,195,256,000		32,236,385,000			31,158,672,000
Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Receivable	7,027,236,000		6,835,763,000			7,081,910,000
One-to-Four Family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Receivable	208,108,000		235,989,000			380,361,000
Acquisition, Development, and Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Receivable	115,947,000		89,790,000			200,596,000
Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- Accrual Loans	2,100,000		3,200,000		$ 600,000			$ 194,000
Total Loans Receivable	3,509,530,000	[2]	3,417,343,000	[2],[3],[4]		3,014,378,000	[3],[4]
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Receivable	5,593,000		6,520,000			8,102,000
Non-Covered Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	53,523,000		53,443,000			64,963,000
Non- Accrual Loans	33,178,000		37,785,000			61,243,000
Current Loans	43,008,147,000		42,768,347,000			41,779,056,000
Total Loans Receivable	43,061,670,000		42,821,790,000			41,844,019,000
Non-Covered Loans | Financing Receivable, 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	20,345,000		15,658,000			3,720,000
Non-Covered Loans | Multi-Family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	10,849,000		8,159,000			6,538,000
Non- Accrual Loans	9,888,000		4,068,000			5,407,000
Current Loans	32,184,407,000		32,228,226,000			31,152,134,000
Total Loans Receivable	32,195,256,000		32,236,385,000			31,158,672,000
Non-Covered Loans | Multi-Family | Financing Receivable, 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	961,000		4,091,000			1,131,000
Non-Covered Loans | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	30,944,000		22,131,000			17,375,000
Non- Accrual Loans	11,573,000		12,142,000			14,830,000
Current Loans	6,996,292,000		6,813,632,000			7,064,535,000
Total Loans Receivable	7,027,236,000		6,835,763,000			7,081,910,000
Non-Covered Loans | Commercial Real Estate | Financing Receivable, 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	19,371,000		9,989,000			2,545,000
Non-Covered Loans | One-to-Four Family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	1,466,000		3,271,000			1,730,000
Non- Accrual Loans	1,466,000		1,696,000			1,730,000
Current Loans	206,642,000		232,718,000			378,631,000
Total Loans Receivable	208,108,000		235,989,000			380,361,000
Non-Covered Loans | One-to-Four Family | Financing Receivable, 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans			1,575,000
Non-Covered Loans | Acquisition, Development, and Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	115,947,000		89,790,000			200,596,000
Total Loans Receivable	115,947,000		89,790,000			200,596,000
Non-Covered Loans | Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	10,247,000		19,866,000			39,024,000
Non- Accrual Loans	10,247,000		19,866,000			39,024,000
Current Loans	3,499,283,000		3,397,477,000			2,975,354,000
Total Loans Receivable	3,509,530,000		3,417,343,000			3,014,378,000
Non-Covered Loans | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	17,000		16,000			296,000
Non- Accrual Loans	4,000		13,000			252,000
Current Loans	5,576,000		6,504,000			7,806,000
Total Loans Receivable	5,593,000		6,520,000			8,102,000
Non-Covered Loans | Other | Financing Receivable, 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	$ 13,000		$ 3,000			$ 44,000
[1]	Excludes accrued interest receivable of $219.1 million and $116.9 million at December 31, 2020 and December 31, 2019, respectively, which is included in other assets in the Consolidated Statements of Condition.
[2]	Includes specialty finance loans and leases of $3.2 billion and $3.0 billion, respectively, at March 31, 2021 and December 31, 2020, and other C&I loans of $350.8 million and $393.3 million, respectively, at March 31, 2021 and December 31, 2020.
[3]	Includes lease financing receivables, all of which were classified as Pass.
[4]	Includes specialty finance loans and leases of $3.0 billion and $2.6 billion, respectively, at December 31, 2020 and December 31, 2019, and other C&I loans of $393.3 million and $420.1 million, respectively, at December 31, 2020 and December 31, 2019.

Loans and Leases - Quality of_2

Loans and Leases - Quality of Loans Held for Investment (Parenthetical) (Details) - Taxi Medallion Loans - Commercial and Industrial - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loans 90 Days Or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	$ 10.1	$ 18.6	$ 30.4
Financing Receivable, 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans		$ 0	$ 0

Loans and Leases - Portfolio of

Loans and Leases - Portfolio of Loans Held for Investment by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Mar. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	$ 43,061,670		$ 42,821,790	[1]	$ 41,844,019	[1]
Multi-Family
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	32,195,256		32,236,385		31,158,672
Multi-Family | Pass
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	30,647,027		31,220,071		30,903,657
Multi-Family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	875,091		566,756		239,664
Multi-Family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	673,138		449,558		15,351
Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	7,027,236		6,835,763		7,081,910
Commercial Real Estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	5,867,168		5,884,244		6,902,218
Commercial Real Estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	785,007		637,101		104,648
Commercial Real Estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	375,061		314,418		75,044
One-to-Four Family
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	208,108		235,989		380,361
One-to-Four Family | Pass
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	194,220		221,861		377,883
One-to-Four Family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	5,354		12,436		748
One-to-Four Family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	8,534		1,692		1,730
Acquisition, Development, and Construction
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	115,947		89,790		200,596
Acquisition, Development, and Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	101,958		68,233		158,751
Acquisition, Development, and Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	13,989		21,557		41,456
Acquisition, Development, and Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans					389
Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	39,546,547	[2]	39,397,927	[1],[2]	38,821,539	[1]
Mortgage Receivable | Pass
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	36,810,373		37,394,409		38,342,509
Mortgage Receivable | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	1,679,441		1,237,850		386,516
Mortgage Receivable | Substandard
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	1,056,733		765,668		92,514
Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	3,509,530	[3]	3,417,343	[3],[4],[5]	3,014,378	[4],[5]
Commercial and Industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	3,450,432		3,388,293	[4]	2,960,557	[4]
Commercial and Industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	2,071		2,842	[4]	1,588	[4]
Commercial and Industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	57,027		26,208	[4]	52,233	[4]
Other
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	5,593		6,520		8,102
Other | Pass
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	5,589		6,507		7,850
Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	4		13		252
Total Other Loans
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	3,515,123		3,423,863		3,022,480
Total Other Loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	3,456,021		3,394,800		2,968,407
Total Other Loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	2,071		2,842		1,588
Total Other Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Non-Covered Loans	$ 57,031		$ 26,221		$ 52,485
[1]	Excludes accrued interest receivable of $219.1 million and $116.9 million at December 31, 2020 and December 31, 2019, respectively, which is included in other assets in the Consolidated Statements of Condition.
[2]	Excludes accrued interest receivable of $219.0 million and $219.1 million at March 31, 2021 and December 31, 2020, respectively, which is included in other assets in the Consolidated Statements of Condition.
[3]	Includes specialty finance loans and leases of $3.2 billion and $3.0 billion, respectively, at March 31, 2021 and December 31, 2020, and other C&I loans of $350.8 million and $393.3 million, respectively, at March 31, 2021 and December 31, 2020.
[4]	Includes lease financing receivables, all of which were classified as Pass.
[5]	Includes specialty finance loans and leases of $3.0 billion and $2.6 billion, respectively, at December 31, 2020 and December 31, 2019, and other C&I loans of $393.3 million and $420.1 million, respectively, at December 31, 2020 and December 31, 2019.

Loans and Leases - Schedule of

Loans and Leases - Schedule of Credit Quality Indicator, Loan Class and Year of Origination the Amortized Cost Basis of Loans And Leases (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	$ 43,125,139,000	$ 42,883,598,000
Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	39,574,972,000	39,426,187,000
Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	3,550,167,000	3,457,411,000
Pass | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	36,838,468,000	37,443,813
Pass | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	3,491,550,000	3,428,351,000
Special Mention | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	1,679,911,000	1,228,338
Special Mention | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	2,071,000	2,842,000
Substandard | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	1,056,593,000	754,036,000
Substandard | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	56,546,000	26,218,000
2021
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	2,342,148,000
2021 | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	2,092,263,000
2021 | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	249,885,000
2021 | Pass | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	2,092,263,000
2021 | Pass | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	249,885,000
Prior to 2017
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	10,961,387,000
Prior to 2017 | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	10,711,949,000
Prior to 2017 | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	249,438,000
Prior to 2017 | Pass | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	9,238,124,000
Prior to 2017 | Pass | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	235,594,000
Prior to 2017 | Special Mention | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	969,925,000
Prior to 2017 | Substandard | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	503,900,000
Prior to 2017 | Substandard | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	13,844,000
2020
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	10,607,260,000	10,798,441,000
2020 | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	9,600,268,000	9,832,498,000
2020 | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	1,006,992,000	965,943,000
2020 | Pass | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	9,587,201,000	9,819,431,000
2020 | Pass | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	1,004,860,000	962,956,000
2020 | Special Mention | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	13,067,000	13,067
2020 | Substandard | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	2,132,000	2,987,000
2019
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	7,524,384,000	7,720,394,000
2019 | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	6,840,984,000	6,957,848
2019 | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	683,400,000	762,546,000
2019 | Pass | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	6,432,567,000	6,719,587,000
2019 | Pass | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	679,606,000	757,220,000
2019 | Special Mention | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	215,301,000	116,400
2019 | Special Mention | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	71,000	42,000
2019 | Substandard | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	193,116,000	121,861
2019 | Substandard | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	3,723,000	5,284,000
2018
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	6,218,188,000	6,523,263,000
2018 | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	6,067,158,000	6,340,027
2018 | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	151,030,000	183,236,000
2018 | Pass | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	5,472,277,000	5,986,476,000
2018 | Pass | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	149,190,000	180,133,000
2018 | Special Mention | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	345,152,000	176,428
2018 | Substandard | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	249,729,000	177,123
2018 | Substandard | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	1,840,000	3,103,000
2017
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	4,446,355,000	4,708,513,000
2017 | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	4,242,168,000	4,485,992,000
2017 | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	204,187,000	222,521,000
2017 | Pass | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	3,995,854,000	4,260,433,000
2017 | Pass | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	195,499,000	209,963,000
2017 | Special Mention | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	136,466,000	164,635
2017 | Substandard | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	109,848,000	60,924
2017 | Substandard | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	8,688,000	12,558,000
2016
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		3,743,955,000
2016 | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		3,616,023,000
2016 | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		127,932,000
2016 | Pass | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		3,062,012,000
2016 | Pass | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		126,680,000
2016 | Special Mention | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		332,176
2016 | Substandard | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		221,835,000
2016 | Substandard | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		1,252,000
Prior to 2016
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		8,315,224,000
Prior to 2016 | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		8,169,191,000
Prior to 2016 | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		146,033,000
Prior to 2016 | Pass | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		7,571,266,000
Prior to 2016 | Pass | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		144,999,000
Prior to 2016 | Special Mention | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		425,632
Prior to 2016 | Substandard | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		172,293,000
Prior to 2016 | Substandard | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis		1,034,000
Revolving Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	1,025,417,000	1,073,808,000
Revolving Loans | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	20,182,000	24,608,000
Revolving Loans | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	1,005,235,000	1,049,200,000
Revolving Loans | Pass | Mortgage Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	20,182,000	24,608
Revolving Loans | Pass | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	976,916,000	1,046,400,000
Revolving Loans | Special Mention | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	2,000,000	$ 2,800,000
Revolving Loans | Substandard | Other Loans
Financing Receivable, Recorded Investment [Line Items]
Loans and lease receivable amortized cost basis	$ 26,319,000

Loans and Leases - Summary of C

Loans and Leases - Summary of Collateral-Dependent Loans Held for Investment by Collateral Type (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Real Estate
Disclosure Of Summary Of Collateral Dependent Loans Held For Investment By Collateral Type [Line Items]
Assets received as collateral	$ 32,555	$ 33,544
Real Estate | Multi-Family
Disclosure Of Summary Of Collateral Dependent Loans Held For Investment By Collateral Type [Line Items]
Loans and leases receivable, collateral for secured borrowings	6,840	7,525
Real Estate | Commercial Real Estate
Disclosure Of Summary Of Collateral Dependent Loans Held For Investment By Collateral Type [Line Items]
Loans and leases receivable, collateral for secured borrowings	25,386	25,462
Real Estate | One-to-Four Family
Disclosure Of Summary Of Collateral Dependent Loans Held For Investment By Collateral Type [Line Items]
Loans and leases receivable, collateral for secured borrowings	329	557
Other
Disclosure Of Summary Of Collateral Dependent Loans Held For Investment By Collateral Type [Line Items]
Loans and leases receivable, collateral for secured borrowings	16,769
Assets received as collateral		26,487
Other | Commercial and Industrial
Disclosure Of Summary Of Collateral Dependent Loans Held For Investment By Collateral Type [Line Items]
Loans and leases receivable, collateral for secured borrowings	$ 16,769	$ 26,487

Loans and Leases - Summary of I

Loans and Leases - Summary of Interest Income on Non accrual loans (Details) - Non-Covered Loans - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income that would have been recorded	$ 4,491	$ 5,599	$ 4,145
Interest income actually recorded	(939)	(3,409)	(3,480)
Interest income foregone	$ 3,552	$ 2,190	$ 665

Loans and Leases - Information

Loans and Leases - Information Regarding Troubled Debt Restructurings (Details) - Non-Covered Loans - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		$ 32,198	$ 34,285		$ 40,499
Accruing
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		14,894	14,967		1,254
Non-Accrual
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		17,304	19,318		39,245
Multi-Family
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		6,840			3,577
Multi-Family | Non-Accrual
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		6,840			3,577
Commercial Real Estate
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		14,894	14,967
Commercial Real Estate | Accruing
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		14,894	14,967
One-to-Four Family
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		330	557		584
One-to-Four Family | Non-Accrual
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		330	557		584
Acquisition, Development, and Construction
Financing Receivable Modifications [Line Items]
Troubled debt restructurings					389
Acquisition, Development, and Construction | Accruing
Financing Receivable Modifications [Line Items]
Troubled debt restructurings					389
Commercial and Industrial
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		10,134	18,761	[1]	35,949	[1]
Commercial and Industrial | Accruing
Financing Receivable Modifications [Line Items]
Troubled debt restructurings	[1]				865
Commercial and Industrial | Non-Accrual
Financing Receivable Modifications [Line Items]
Troubled debt restructurings		$ 10,134	$ 18,761	[1]	$ 35,084	[1]
[1]	Includes $17.5 million and $27.3 million of taxi medallion-related loans at December 31, 2020 and 2019, respectively.

Loans and Leases - Informatio_2

Loans and Leases - Information Regarding Troubled Debt Restructurings (Parenthetical) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Taxi Medallion Loans
Financing Receivable Modifications [Line Items]
Troubled debt restructurings	$ 10	$ 17.5	$ 27.3

Loans and Leases - Summary of F

Loans and Leases - Summary of Financial Effects of Troubled Debt Restructurings (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2021USD ($)Investment	Mar. 31, 2020USD ($)Investment	Dec. 31, 2020USD ($)Investment	Dec. 31, 2019USD ($)Investment	Dec. 31, 2018USD ($)Investment
Financing Receivable Modifications [Line Items]
Number of loans classified as a non-accrual TDRs | Investment			43,000	73,000	22,000
Pre-Modification Recorded Investment			$ 24,031,000	$ 35,287,000	$ 8,663,000
Post-Modification Recorded Investment			22,590,000	30,816,000	6,355,000
Trouble debt restructuring, charge-off amount			$ 1,441,000	4,471,000	$ 2,308,000
Capitalized interest				$ 3,000
Multi-Family
Financing Receivable Modifications [Line Items]
Number of loans classified as a non-accrual TDRs | Investment	1
Pre-Modification Recorded Investment	$ 7,515,000
Post-Modification Recorded Investment	$ 7,515,000
Weighted Average Interest Rate, Pre-Modification	3.13%
Weighted Average Interest Rate, Post-Modification	3.25%
Trouble debt restructuring, charge-off amount	$ 0
Capitalized interest	$ 0
Commercial Real Estate
Financing Receivable Modifications [Line Items]
Number of loans classified as a non-accrual TDRs | Investment			1,000
Pre-Modification Recorded Investment			$ 15,119,000
Post-Modification Recorded Investment			$ 15,119,000
Weighted Average Interest Rate, Pre-Modification			8.00%
Weighted Average Interest Rate, Post-Modification			3.50%
Commercial and Industrial
Financing Receivable Modifications [Line Items]
Number of loans classified as a non-accrual TDRs | Investment		8	42,000	72,000	21,000
Pre-Modification Recorded Investment		$ 1,920,000	$ 8,912,000	$ 35,156,000	$ 7,763,000
Post-Modification Recorded Investment		$ 1,572,000	$ 7,471,000	$ 30,685,000	$ 5,455,000
Weighted Average Interest Rate, Pre-Modification		3.29%	2.36%	4.31%	3.25%
Weighted Average Interest Rate, Post-Modification		3.24%	2.23%	4.37%	3.13%
Trouble debt restructuring, charge-off amount		$ 348,000	$ 1,441,000	$ 4,471,000	$ 2,308,000
Capitalized interest		$ 0
One-to-Four Family
Financing Receivable Modifications [Line Items]
Number of loans classified as a non-accrual TDRs | Investment				1,000
Pre-Modification Recorded Investment				$ 131,000
Post-Modification Recorded Investment				$ 131,000
Weighted Average Interest Rate, Pre-Modification				5.50%
Weighted Average Interest Rate, Post-Modification				5.50%
Capitalized interest				$ 3,000
Acquisition, Development, and Construction
Financing Receivable Modifications [Line Items]
Number of loans classified as a non-accrual TDRs | Investment					1,000
Pre-Modification Recorded Investment					$ 900,000
Post-Modification Recorded Investment					$ 900,000
Weighted Average Interest Rate, Pre-Modification					4.50%
Weighted Average Interest Rate, Post-Modification					4.50%

Allowance for Credit Losses o_3

Allowance for Credit Losses on Loans and Leases - Summary of Activity in Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	Jan. 01, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Valuation Allowance [Line Items]
Balance, beginning of period	$ 147,638	$ 194,043	$ 147,638	$ 147,638	$ 159,820
Accounting Standards Update [Extensible List]		Accounting Standards Update 2016-13		Accounting Standards Update 2016-13
Charge-offs		$ (4,324)	(10,385)	$ (22,178)	(20,307)
Recoveries	1,900	4,841	189	3,393	1,020
Balance, end of period		197,758	162,244	194,043	147,638
Cumulative Effect, Period of Adoption, Adjustment
Valuation Allowance [Line Items]
Balance, beginning of period	1,911		$ 1,911	$ 1,911
Accounting Standards Update [Extensible List]			Accounting Standards Update 2016-13	Accounting Standards Update 2016-13
Balance, end of period					1,911
Adjusted Balance
Valuation Allowance [Line Items]
Balance, beginning of period	149,549	194,043	$ 149,549	$ 149,549	159,820
Balance, end of period				194,043	149,549
Mortgage Receivable
Valuation Allowance [Line Items]
Balance, beginning of period	122,694	176,538	$ 122,694	$ 122,694	130,983
Accounting Standards Update [Extensible List]			Accounting Standards Update 2016-13	Accounting Standards Update 2016-13
Charge-offs		(658)		$ (1,872)	(1,613)
Recoveries		20	$ 11	1,172	61
Balance, end of period		176,427	141,314	176,538	122,694
Mortgage Receivable | Cumulative Effect, Period of Adoption, Adjustment
Valuation Allowance [Line Items]
Balance, beginning of period	99		99	99
Balance, end of period					99
Mortgage Receivable | Adjusted Balance
Valuation Allowance [Line Items]
Balance, beginning of period	122,793	176,538	122,793	122,793	130,983
Balance, end of period				176,538	122,793
Other Loans
Valuation Allowance [Line Items]
Balance, beginning of period	24,944	17,505	$ 24,944	$ 24,944	28,837
Accounting Standards Update [Extensible List]			Accounting Standards Update 2016-13	Accounting Standards Update 2016-13
Charge-offs		(3,666)	$ (10,385)	$ (20,306)	(18,694)
Recoveries		4,821	178	2,221	959
Balance, end of period		21,331	20,930	17,505	24,944
Other Loans | Cumulative Effect, Period of Adoption, Adjustment
Valuation Allowance [Line Items]
Balance, beginning of period	1,812		1,812	1,812
Balance, end of period					1,812
Other Loans | Adjusted Balance
Valuation Allowance [Line Items]
Balance, beginning of period	26,756	17,505	26,756	26,756	28,837
Balance, end of period				17,505	26,756
Allowance for Credit Losses | Mortgage Receivable
Valuation Allowance [Line Items]
Balance, beginning of period	122,695		122,695	122,695
Balance, end of period					122,695
Allowance for Credit Losses | Mortgage Receivable | Cumulative Effect, Period of Adoption, Adjustment
Valuation Allowance [Line Items]
Balance, beginning of period	(178)		(178)	(178)
Balance, end of period					(178)
Allowance for Credit Losses | Mortgage Receivable | Adjusted Balance
Valuation Allowance [Line Items]
Balance, beginning of period	122,517		122,517	122,517
Balance, end of period					122,517
Allowance for Credit Losses | Other Loans
Valuation Allowance [Line Items]
Balance, beginning of period	24,943		24,943	24,943
Balance, end of period					24,943
Allowance for Credit Losses | Other Loans | Cumulative Effect, Period of Adoption, Adjustment
Valuation Allowance [Line Items]
Balance, beginning of period	2,089		2,089	2,089
Balance, end of period					2,089
Allowance for Credit Losses | Other Loans | Adjusted Balance
Valuation Allowance [Line Items]
Balance, beginning of period	$ 27,032		27,032	27,032
Balance, end of period					27,032
Non-Covered Loans
Valuation Allowance [Line Items]
Provision for (recovery of) credit losses on loans and leases		3,198	22,891	63,279	7,105
Non-Covered Loans | Mortgage Receivable
Valuation Allowance [Line Items]
Provision for (recovery of) credit losses on loans and leases		527	18,786	54,445	(6,737)
Non-Covered Loans | Other Loans
Valuation Allowance [Line Items]
Provision for (recovery of) credit losses on loans and leases		$ 2,671	$ 4,105	$ 8,834	$ 13,842

Allowance for Credit Losses o_4

Allowance for Credit Losses on Loans and Leases - Additional Information (Details) - USD ($)	Jan. 01, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for credit losses on loans and leases		$ 197,758,000	$ 162,244,000	$ 194,043,000	$ 147,638,000	$ 159,820,000
Increase in allowance for credit losses on loans and leases	$ 1,900,000	4,841,000	189,000	3,393,000	1,020,000
Provision for loan losses		3,569,000	20,601,000	62,228,000	7,105,000	$ 18,256,000
Charge-offs		4,324,000	$ 10,385,000	22,178,000	20,307,000
Off-balance sheet credit exposures before adoption of CECL	$ 12,500,000
Unfunded Loan Commitment
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for credit losses		12,300,000		11,900,000	$ 461,000
CARES Act
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for credit losses on loans and leases		197,800,000		194,000,000
Increase in allowance for credit losses on loans and leases		3,700,000		46,400,000
Provision for loan losses		$ 3,600,000		63,300,000
Charge-offs				$ 44,500,000

Allowance for Credit Losses o_5

Allowance for Credit Losses on Loans and Leases - Summary of Additional Information about Nonaccrual Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	$ 27,866	$ 22,634	$ 56,936
Impaired loans with no related allowance, Interest Income Recognized	102	841	3,516
Impaired loans with an allowance recorded, Recorded Investment	5,312	15,151	1,445
Impaired loans with an allowance recorded, Related Allowance	904	1,110	116
Impaired loans with an allowance recorded, Interest Income Recognized	6	99	13
Total impaired loans, Recorded Investment	33,178	37,785	58,381
Total impaired loans, Interest Income Recognized	108	940	3,529
Multi-Family
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	6,840		3,577
Impaired loans with no related allowance, Interest Income Recognized	81		266
Impaired loans with an allowance recorded, Recorded Investment	3,048	4,068
Impaired loans with an allowance recorded, Related Allowance	435	589
Impaired loans with an allowance recorded, Interest Income Recognized	0	28
Total impaired loans, Recorded Investment	9,888	4,068	3,577
Total impaired loans, Interest Income Recognized	81	28	266
Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	10,491	2,256	14,717
Impaired loans with no related allowance, Interest Income Recognized			371
Impaired loans with an allowance recorded, Recorded Investment	1,082	9,886
Impaired loans with an allowance recorded, Related Allowance	84	133
Impaired loans with an allowance recorded, Interest Income Recognized	2	52
Total impaired loans, Recorded Investment	11,573	12,142	14,717
Total impaired loans, Interest Income Recognized	2	52	371
One-to-Four Family
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	330	557	584
Impaired loans with no related allowance, Interest Income Recognized	3	21	21
Impaired loans with an allowance recorded, Recorded Investment	1,137	1,139
Impaired loans with an allowance recorded, Related Allowance	365	370
Impaired loans with an allowance recorded, Interest Income Recognized	3	14
Total impaired loans, Recorded Investment	1,467	1,696	584
Total impaired loans, Interest Income Recognized	6	35	21
Acquisition, Development, and Construction
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment			389
Impaired loans with no related allowance, Interest Income Recognized			364
Total impaired loans, Recorded Investment			389
Total impaired loans, Interest Income Recognized			364
Other Loans
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	10,205	19,821	37,669
Impaired loans with no related allowance, Interest Income Recognized	18	820	2,494
Impaired loans with an allowance recorded, Recorded Investment	45	58	1,445
Impaired loans with an allowance recorded, Related Allowance	20	18	116
Impaired loans with an allowance recorded, Interest Income Recognized	1	5	13
Total impaired loans, Recorded Investment	10,250	19,879	39,114
Total impaired loans, Interest Income Recognized	$ 19	$ 825	$ 2,507

Allowance for Credit Losses o_6

Allowance for Credit Losses on Loans and Leases - Summary of Additional Information about Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	$ 27,866	$ 22,634	$ 56,936
Impaired loans with no related allowance, Unpaid Principal Balance			143,149
Impaired loans with no related allowance, Average Recorded Investment			54,393
Impaired loans with no related allowance, Interest Income Recognized	102	841	3,516
Impaired loans with an allowance recorded, Recorded Investment	5,312	15,151	1,445
Impaired loans with an allowance recorded, Unpaid Principal Balance			4,173
Impaired loans with an allowance recorded, Related Allowance	904	1,110	116
Impaired loans with an allowance recorded, Average Recorded Investment			4,111
Impaired loans with an allowance recorded, Interest Income Recognized	6	99	13
Total impaired loans, Recorded Investment	33,178	37,785	58,381
Total impaired loans, Unpaid Principal Balance			147,322
Total impaired loans, Average Recorded Investment			58,504
Total impaired loans, Interest Income Recognized	108	940	3,529
Multi-Family
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	6,840		3,577
Impaired loans with no related allowance, Unpaid Principal Balance			6,790
Impaired loans with no related allowance, Average Recorded Investment			4,336
Impaired loans with no related allowance, Interest Income Recognized	81		266
Impaired loans with an allowance recorded, Recorded Investment	3,048	4,068
Impaired loans with an allowance recorded, Related Allowance	435	589
Impaired loans with an allowance recorded, Interest Income Recognized	0	28
Total impaired loans, Recorded Investment	9,888	4,068	3,577
Total impaired loans, Unpaid Principal Balance			6,790
Total impaired loans, Average Recorded Investment			4,336
Total impaired loans, Interest Income Recognized	81	28	266
Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	10,491	2,256	14,717
Impaired loans with no related allowance, Unpaid Principal Balance			19,832
Impaired loans with no related allowance, Average Recorded Investment			6,140
Impaired loans with no related allowance, Interest Income Recognized			371
Impaired loans with an allowance recorded, Recorded Investment	1,082	9,886
Impaired loans with an allowance recorded, Related Allowance	84	133
Impaired loans with an allowance recorded, Interest Income Recognized	2	52
Total impaired loans, Recorded Investment	11,573	12,142	14,717
Total impaired loans, Unpaid Principal Balance			19,832
Total impaired loans, Average Recorded Investment			6,140
Total impaired loans, Interest Income Recognized	2	52	371
One-to-Four Family
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	330	557	584
Impaired loans with no related allowance, Unpaid Principal Balance			602
Impaired loans with no related allowance, Average Recorded Investment			811
Impaired loans with no related allowance, Interest Income Recognized	3	21	21
Impaired loans with an allowance recorded, Recorded Investment	1,137	1,139
Impaired loans with an allowance recorded, Related Allowance	365	370
Impaired loans with an allowance recorded, Interest Income Recognized	3	14
Total impaired loans, Recorded Investment	1,467	1,696	584
Total impaired loans, Unpaid Principal Balance			602
Total impaired loans, Average Recorded Investment			811
Total impaired loans, Interest Income Recognized	6	35	21
Acquisition, Development, and Construction
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment			389
Impaired loans with no related allowance, Unpaid Principal Balance			1,289
Impaired loans with no related allowance, Average Recorded Investment			3,508
Impaired loans with no related allowance, Interest Income Recognized			364
Total impaired loans, Recorded Investment			389
Total impaired loans, Unpaid Principal Balance			1,289
Total impaired loans, Average Recorded Investment			3,508
Total impaired loans, Interest Income Recognized			364
Other Loans
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	10,205	19,821	37,669
Impaired loans with no related allowance, Unpaid Principal Balance			114,636
Impaired loans with no related allowance, Average Recorded Investment			39,598
Impaired loans with no related allowance, Interest Income Recognized	18	820	2,494
Impaired loans with an allowance recorded, Recorded Investment	45	58	1,445
Impaired loans with an allowance recorded, Unpaid Principal Balance			4,173
Impaired loans with an allowance recorded, Related Allowance	20	18	116
Impaired loans with an allowance recorded, Average Recorded Investment			4,111
Impaired loans with an allowance recorded, Interest Income Recognized	1	5	13
Total impaired loans, Recorded Investment	10,250	19,879	39,114
Total impaired loans, Unpaid Principal Balance			118,809
Total impaired loans, Average Recorded Investment			43,709
Total impaired loans, Interest Income Recognized	$ 19	$ 825	$ 2,507

Leases - Additional Information

Leases - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Lessor, operating lease, term of contract				20 years
Residual value of leased asset	$ 63		$ 70.6	$ 70.1
Carrying value of investment lease	2,000		1,900	1,400
Amortization of ROU assets	$ 4.7	$ 4.1	$ 20	38.4
Operating Lease, extension terms	the vast majority of which include one or more options to extend the leases for up to five years resulting in lease terms up to 40 years.		the vast majority of which include one or more options to extend the leases for up to five years resulting in lease terms up to 40 years
Other Income
Gain on sale of branch property				7.9
Discontinued Operations
Amortization of ROU assets				$ 11.7
Minimum
Lessor, operating lease, term of contract	24 years		24 months
Operating lease, remaining lease term	1 year		1 year
Maximum
Lessor, operating lease, term of contract	120 years		120 months
Operating lease, remaining lease term	25 years		25 years

Leases - Components of Lease In

Leases - Components of Lease Income (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Interest income on lease financing	[1]	$ 13,871	$ 11,949	$ 52,279	$ 38,087
[1]	Included in Interest Income – Loans and leases in the Consolidated Statements of Income and Comprehensive Income.

Leases - Components of Net Inve

Leases - Components of Net Investment in Direct Financing Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Net investment in the lease - lease payments receivable	$ 1,929,213	$ 1,771,097	$ 1,302,760
Net investment in the lease - unguaranteed residual assets	80,349	80,093	74,064
Total lease payments	$ 2,009,562	$ 1,851,190	$ 1,376,824

Leases - Summary of Remaining M

Leases - Summary of Remaining Maturity of Undiscounted Lease Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
2021	$ 24,349	$ 37,373
2022	111,308	171,549
2023	342,220	277,468
2024	236,013	111,378
2025	427,495	430,585
Thereafter	868,177	822,837
Total lease payments	2,009,562	1,851,190
Plus: deferred origination costs	30,823	32,008
Less: unearned income	(110,582)	(116,366)
Total lease finance receivables, net	$ 1,929,803	$ 1,766,832

Leases - Summary of Components

Leases - Summary of Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 6,750	$ 6,759	$ 22,721	$ 28,695
Sublease income	(28)	(11)	(68)	(105)
Total lease cost	$ 6,722	$ 6,748	$ 22,653	$ 28,590

Leases - Summary of Supplementa

Leases - Summary of Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 6,750	$ 6,759	$ 22,721	$ 28,695

Leases - Summary of Supplemen_2

Leases - Summary of Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 262,196	$ 266,864	$ 286,194
Operating lease liabilities	$ 262,169	$ 266,846	$ 285,991
Weighted average remaining lease term	16 years	16 years	17 years
Weighted average discount rate%	3.08%	3.12%	3.23%

Leases - Summary of Maturities

Leases - Summary of Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
2021	$ 20,099	$ 26,961
2022	25,893	25,994
2023	25,435	25,545
2024	24,764	24,884
2025	24,073	24,113
Thereafter	222,215	223,503
Total lease payments	342,479	351,000
Less: imputed interest	(80,310)	(84,154)
Total present value of lease liabilities	$ 262,169	$ 266,846	$ 285,991

Deposits - Weighted Average Int

Deposits - Weighted Average Interest Rates for Each Type of Deposit (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deposits:
Interest-bearing checking and money market accounts	$ 12,665,002	$ 12,610,073	$ 10,230,144
Savings accounts	7,043,602	6,415,608	4,780,007
Certificates of deposit	9,614,298	10,330,680	14,214,858
Non-interest-bearing accounts	4,874,234	3,080,452	2,432,123
Total deposits	$ 34,197,136	$ 32,436,813	$ 31,657,132
Percent of Total
Interest-bearing checking and money market accounts		38.87%	32.32%
Savings accounts		19.78%	15.10%
Certificates of deposit		31.85%	44.90%
Non-interest-bearing accounts		9.50%	7.68%
Total deposits		100.00%	100.00%
Weighted Average Interest Rate
Interest-bearing checking and money market accounts, weighted average interest rate		0.28%	1.30%
Savings accounts, weighted average interest rate		0.41%	0.75%
Certificates of deposit, weighted average interest rate		0.83%	2.30%
Total deposits, weighted average interest rate		0.45%	1.57%

Deposits - Additional Informati

Deposits - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Schedule of Investments [Line Items]
Aggregate amounts of deposits reclassified as loan balances	$ 2.3	$ 2.4
Brokered deposits	$ 5,300	$ 5,200
Brokered deposits, weighted average interest rates	0.08%	1.94%
Money Market
Schedule of Investments [Line Items]
Brokered deposits	$ 3,000	$ 1,500
Interest Bearing Checking Accounts
Schedule of Investments [Line Items]
Brokered deposits	1,300	1,200
Certificates of Deposits
Schedule of Investments [Line Items]
Brokered deposits	$ 1,000	$ 2,500

Deposits - Scheduled Maturities

Deposits - Scheduled Maturities of Certificates of Deposit Intangibles (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Time deposits by maturity
1 year or less		$ 9,120,243
More than 1 year through 2 years		708,342
More than 2 years through 3 years		313,682
More than 3 years through 4 years		187,089
More than 4 years through 5 years		1,009
Over 5 years		315
Total CDs	$ 9,614,298	$ 10,330,680	$ 14,214,858

Deposits - Core Deposit Intangi

Deposits - Core Deposit Intangibles in Amounts of One Hundred Thousand or more, by Remaining Term to Maturity (Details) $ in Thousands	Dec. 31, 2020USD ($)
Banking And Thrift Disclosure [Abstract]
CDs of $100,000 or More Maturing Within, 3 Months or Less	$ 2,548,901
CDs of $100,000 or More Maturing Within, Over 3 to 6 Months	3,094,530
CDs of $100,000 or More Maturing Within, Over 6 to 12 Months	717,291
CDs of $100,000 or More Maturing Within, Over 12 Months	384,860
CDs of $100,000 or More Maturing Within, Total	$ 6,745,582

Borrowed Funds - Summary of Bor

Borrowed Funds - Summary of Borrowed Funds (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
FHLB advances	$ 14,302,661	$ 14,627,661	$ 13,102,661
Repurchase agreements	800,000	800,000	800,000
Total wholesale borrowings	15,102,661	15,427,661	13,902,661
Junior subordinated debentures	360,362	360,259	359,866
Subordinated notes	295,764	295,624	295,066
Total borrowed funds	$ 15,758,787	$ 16,083,544	$ 14,557,593

Borrowed Funds - Summary of Rep

Borrowed Funds - Summary of Repurchase Agreements Accounted for Secured Borrowings (Details) $ in Thousands	Mar. 31, 2021USD ($)
Greater than 90 Days | GSE obligations
Remaining Contractual Maturity of the Agreements	$ 800,000

Borrowed Funds - Additional Inf

Borrowed Funds - Additional Information (Details)	Nov. 04, 2002USD ($)AGE$ / sharesshares	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
Accrued interest				$ 19,300,000	$ 23,400,000
Short-term FHLB advances				2,300,000,000	1,000,000,000	$ 0
Short-term FHLB advances, average balance				$ 2,100,000,000	$ 52,400,000
Short-term FHLB advances, average balance, weighted average interest rate				0.72%	1.90%
Short-term FHLB advances, interest expense				$ 15,300,000	$ 1,000,000
Interest expense		$ 72,071,000	$ 79,522,000	301,849,000	317,474,000	279,329,000
Federal funds purchased outstanding amount				0	0
Federal funds purchased, average balance				$ 179,900,000	$ 6,800,000	$ 620,000
Federal fund purchased Weighted average interest rate				0.49%	1.70%	2.20%
Federal fund purchased, interest expenses				$ 886,000	$ 118,000	$ 14,000
Junior subordinated debentures		360,362,000		360,259,000	359,866,000
Gross proceeds of BONUSES, debt		325,000,000	$ 2,150,000,000	6,925,000,000	4,785,812,000	5,667,268,000
Subordinated notes outstanding		$ 295,764,000		295,624,000	295,066,000
Interest expense on subordinated notes				18,300,000	18,300,000	2,800,000
Repurchase Agreements
Debt Instrument [Line Items]
Accrued interest				1,700,000	1,700,000
Interest expense				18,200,000	17,700,000	6,800,000
Short-term debt outstanding amount				0	0
Federal Home Loan Bank Advances
Debt Instrument [Line Items]
Interest expense				245,700,000	259,000,000	248,000,000
BONUSESSM units | New York Community Capital Trust V (BONUSESSM Units)
Debt Instrument [Line Items]
Public offering of Bifurcated Option Note Unit Securities ("BONUSES units") | shares	5,500,000
Public offering of units, offering price per share | $ / shares	$ 50
Warrants and capital securities non-callable period	5 years
Gross proceeds of BONUSES, debt	$ 275,000,000
Difference between the assigned value and the stated liquidation amount of the capital securities is treated as an original issue discount	$ 92,400,000
Original issue discount amortized amount				65,400,000
BONUSESSM units | New York Community Capital Trust V (BONUSESSM Units) | Capital Units
Debt Instrument [Line Items]
Warrant to purchase, number of shares | AGE	2.4953
Warrant to purchase, total number of shares | shares	13,700,000
Warrant to purchase, exercise price per share | $ / shares	$ 20.04
Capital security, term (in years)	49 years
Capital security, coupon or distribution rate	6.00%
Capital security, per share liquidation amount | $ / shares	$ 50
BONUSESSM units | New York Community Capital Trust V (BONUSESSM Units) | Warrant
Debt Instrument [Line Items]
Gross proceeds of BONUSES	$ 92,400,000
Junior Subordinated Debt
Debt Instrument [Line Items]
Interest expense				18,800,000	22,400,000	$ 21,700,000
Junior Subordinated Debt | New York Community Capital Trust V (BONUSESSM Units) | Capital Units
Debt Instrument [Line Items]
Gross proceeds of BONUSES	$ 182,600,000
FHLB - NY
Debt Instrument [Line Items]
Unused line of credit				7,300,000,000	7,900,000,000
Overnight FHLB advances				0	100,000,000
Line of credit, average balance				$ 2,000,000	$ 3,100,000
Line of credit, weighted average interest rate				1.20%	2.10%
Interest expense				$ 24,000	$ 66,000

Borrowed Funds - Analysis of Co

Borrowed Funds - Analysis of Contractual Maturities of Outstanding Federal Home Loan Bank Advances (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Year of Maturity
Total FHLB advances		$ 14,302,661	$ 14,627,661	$ 13,102,661
Contractual Maturity
Year of Maturity
2021			3,272,661
2022			550,000
2023			2,525,000
2024			800,000
2028			4,350,000
2029			3,130,000
Total FHLB advances			$ 14,627,661
Weighted Average Interest Rate
2021	[1]		0.87%
2022	[1]		1.31%
2023	[1]		0.85%
2024	[1]		0.53%
2028	[1]		2.40%
2029	[1]		1.55%
Total FHLB advances	[1]		1.47%
Earlier of Contractual Maturity or Next Call Date
Year of Maturity
2021			$ 8,952,661
2022			2,150,000
2023			2,725,000
2024			800,000
Total FHLB advances			$ 14,627,661
Weighted Average Interest Rate
2021	[1]		1.73%
2022	[1]		1.43%
2023	[1]		0.91%
2024	[1]		0.53%
Total FHLB advances	[1]		1.47%
[1]	Does not included the effect interest rate swap agreements.

Borrowed Funds - Analysis of _2

Borrowed Funds - Analysis of Contractual Maturities of Outstanding Repurchase Agreements Accounted for as Secured Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Amount
Repurchase agreements	$ 800,000	$ 800,000	$ 800,000
Contractual Maturity
Amount
2028		300,000
2029		500,000
Repurchase agreements		$ 800,000
Weighted Average Interest Rate
2028		2.37%
2029		2.16%
Contractual Maturity Over 90 days, Weighted Average Interest Rate		2.24%
Earlier of Contractual Maturity or Next Call Date
Amount
2021		$ 400,000
2022		400,000
Repurchase agreements		$ 800,000
Weighted Average Interest Rate
2021		2.31%
2022		2.16%
Contractual Maturity Over 90 days, Weighted Average Interest Rate		2.24%

Borrowed Funds - Details of Rep

Borrowed Funds - Details of Repurchase Agreements (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Contractual Maturity Over 90 days, amount	$ 800,000	$ 800,000	$ 800,000
Maturity Greater than 90 Days [Member]
Debt Instrument [Line Items]
Contractual Maturity Over 90 days, amount		$ 800,000
Contractual Maturity Over 90 days, Weighted Average Interest Rate		2.24%
Mortgage-Related Securities | Maturity Greater than 90 Days [Member]
Debt Instrument [Line Items]
Contractual Maturity Over 90 days, Amortized Cost		$ 286,198
Contractual Maturity Over 90 days, Fair Value		304,261
U.S. Treasury and GSE Obligations | Maturity Greater than 90 Days [Member]
Debt Instrument [Line Items]
Contractual Maturity Over 90 days, Amortized Cost		571,182
Contractual Maturity Over 90 days, Fair Value		$ 573,344

Borrowed Funds - Junior Subordi

Borrowed Funds - Junior Subordinated Debentures Outstanding (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Subordinated Borrowing [Line Items]
Junior Subordinated Debentures Amount Outstanding		$ 360,362	$ 360,259	$ 359,866
Capital Securities Amount Outstanding		$ 347,585	$ 347,482
New York Community Capital Trust V (BONUSESSM Units)
Subordinated Borrowing [Line Items]
Interest Rate of Capital Securities and Debentures		6.00%	6.00%
Junior Subordinated Debentures Amount Outstanding		$ 146,436	$ 146,333
Capital Securities Amount Outstanding		$ 140,085	$ 139,982
Date of Original Issue		Nov. 4, 2002	Nov. 4, 2002
Stated Maturity		Nov. 1, 2051	Nov. 1, 2051
First Optional Redemption Date	[1]	Nov. 4, 2007	Nov. 4, 2007
New York Community Capital Trust X
Subordinated Borrowing [Line Items]
Interest Rate of Capital Securities and Debentures		1.78%	1.82%
Junior Subordinated Debentures Amount Outstanding		$ 123,712	$ 123,712
Capital Securities Amount Outstanding		$ 120,000	$ 120,000
Date of Original Issue		Dec. 14, 2006	Dec. 14, 2006
Stated Maturity		Dec. 15, 2036	Dec. 15, 2036
First Optional Redemption Date	[2]	Dec. 15, 2011	Dec. 15, 2011
PennFed Capital Trust III
Subordinated Borrowing [Line Items]
Interest Rate of Capital Securities and Debentures		3.43%	3.47%
Junior Subordinated Debentures Amount Outstanding		$ 30,928	$ 30,928
Capital Securities Amount Outstanding		$ 30,000	$ 30,000
Date of Original Issue		Jun. 2, 2003	Jun. 2, 2003
Stated Maturity		Jun. 15, 2033	Jun. 15, 2033
First Optional Redemption Date	[2]	Jun. 15, 2008	Jun. 15, 2008
New York Community Capital Trust XI
Subordinated Borrowing [Line Items]
Interest Rate of Capital Securities and Debentures		1.85%	1.89%
Junior Subordinated Debentures Amount Outstanding		$ 59,286	$ 59,286
Capital Securities Amount Outstanding		$ 57,500	$ 57,500
Date of Original Issue		Apr. 16, 2007	Apr. 16, 2007
Stated Maturity		Jun. 30, 2037	Jun. 30, 2037
First Optional Redemption Date	[2]	Jun. 30, 2012	Jun. 30, 2012
[1]	Callable subject to certain conditions as described in the prospectus filed with the SEC on November 4, 2002.
[2]	Callable from this date forward.

Borrowed Funds - Summary of Fix

Borrowed Funds - Summary of Fixed-To-Floating Rate Subordinated Notes Outstanding (Details) - Subordinated Debt - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Debt Outstanding [Line Items]
Stated Maturity	Nov. 6, 2028	Nov. 6, 2028
Interest rate of subordinated note	5.90%	5.90%	[1]
Principal amount of Subordinated Notes	$ 300,000	$ 300,000
[1]	From and including the date of original issuance to, but excluding November 6, 2023, the Notes will bear interest at an initial rate of 5.90% per annum payable semi-annually. Unless redeemed, from and including November 6, 2023 to but excluding the maturity date, the interest rate will reset quarterly to an annual interest rate equal to the then-current three-month LIBOR rate plus 278 basis point payable quarterly.

Borrowed Funds - Summary of F_2

Borrowed Funds - Summary of Fixed-To-Floating Rate Subordinated Notes Outstanding (Parenthetical) (Details) - Subordinated Debt	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Interest rate of subordinated note	5.90%	5.90%	[1]
Description of variable rate basis	LIBOR rate plus 278 basis points	LIBOR rate plus 278 basis point
Debt instrument spread on variable rate	278.00%	278.00%
[1]	From and including the date of original issuance to, but excluding November 6, 2023, the Notes will bear interest at an initial rate of 5.90% per annum payable semi-annually. Unless redeemed, from and including November 6, 2023 to but excluding the maturity date, the interest rate will reset quarterly to an annual interest rate equal to the then-current three-month LIBOR rate plus 278 basis point payable quarterly.

Federal, State and Local Taxe_2

Federal, State and Local Taxes - Components of Net Deferred Tax Asset (Liability) (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred Tax Assets:
Allowance for credit losses on loans and leases	$ 53,260	$ 40,584
Compensation and related benefit obligations	20,760	19,401
Non-accrual interest	672	624
Net operating loss carryforwards	5,682	19,750
Other	17,240	12,169
Gross deferred tax assets	97,614	92,528
Deferred tax asset after valuation allowance	97,614	92,528
Deferred Tax Liabilities:
Amortizable intangibles	(2,775)	(2,480)
Acquisition accounting and fair value adjustments on securities (including OTTI)	(12,407)	(9,742)
Premises and equipment	(6,385)	(7,578)
Prepaid pension cost	(24,412)	(22,739)
Fair value adjustments on loans	(92,340)	(3,209)
Leases	(370,305)	(237,429)
Other	(8,880)	(10,782)
Gross deferred tax liabilities	(517,504)	(293,959)
Net deferred tax liability	$ (419,890)	$ (201,431)

Federal, State and Local Taxe_3

Federal, State and Local Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Income tax expense	$ 50,500,000	$ 14,915,000	$ 76,695,000	$ 128,264,000	$ 135,252,000
CARES Act allowance of net operating losses			5 years
Outstanding amount of the investment			$ 84,500,000	57,100,000
Other commitments of additional anticipated equity contributions relating to current investments			54,200,000	29,100,000
Affordable housing tax credits and other tax benefits recognized			7,500,000	5,900,000	5,200,000
Affordable housing tax credits and other tax benefits, related amortization recognized			6,200,000	5,200,000	4,700,000
Impairment losses on other assets			0	0	0
Unrecognized gross tax benefits			37,820,000	35,749,000	33,357,000	$ 33,681,000
Total amount of net unrecognized tax benefits that would affect the effective tax rate, if recognized			29,900,000
Income tax benefit attributed to interest and penalties			2,800,000	2,500,000	1,700,000
Accrued interest and penalties on tax liabilities			18,400,000	14,500,000
Net deferred tax liabilities			419,890,000	$ 201,431,000
Special Federal Tax Provision
Income Taxes [Line Items]
Tax bad debt base-year reserves			61,500,000
Net deferred tax liabilities			12,900,000
Maximum
Income Taxes [Line Items]
Estimated change in balance of unrecognized tax benefit, within next twelve months			21,000,000
CARES Act
Income Taxes [Line Items]
Income tax expense			68,400,000
New Jersey Division of Taxation [Member]
Income Taxes [Line Items]
Income tax expense					$ 2,100,000
Domestic Tax Authority
Income Taxes [Line Items]
Net operating loss carryforward			$ 83,900,000
Operating loss carryforward period			20 years

Federal, State and Local Taxe_4

Federal, State and Local Taxes - Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Federal – current			$ (147,691)	$ 4,069	$ 89,187
State and local – current			5,044	23,382	22,868
Total current			(142,647)	27,451	112,055
Federal – deferred			189,826	100,971	13,058
State and local – deferred			29,516	(158)	10,139
Total deferred	$ 31,279	$ 44,465	219,342	100,813	23,197
Income tax expense reported in net income	$ 50,500	$ 14,915	76,695	128,264	135,252
Securities available-for-sale			15,648	16,142	(32,162)
Pension liability adjustments			293	5,033	4,897
Cash flow hedge			(12,852)	333
Non-credit portion of OTTI losses				0	821
Adoption of ASU 2016-13			$ (3,972)
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13		Accounting Standards Update 2016-13
Total income taxes			$ 75,812	$ 149,772	$ 108,808

Federal, State and Local Taxe_5

Federal, State and Local Taxes - Reconciliation of Statutory Federal Income Tax Expense (Benefit) Reported in Net Income to Combined Actual Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Statutory federal income tax at 21%, 21% and 21%, respectively			$ 123,439	$ 109,894	$ 117,111
State and local income taxes, net of federal income tax effect			27,303	18,346	24,451
Effect of tax law changes			(73,103)		1,625
Non-deductible FDIC deposit insurance premiums			7,857	6,938	8,852
Effect of tax deductibility of ESOP			(3,208)	(3,163)	(3,116)
Non-taxable income and expense of BOLI			(6,726)	(5,981)	(5,957)
Federal tax credits			(1,290)	(750)	(531)
Adjustments relating to prior tax years			634	373	(7,246)
Other, net			1,789	2,607	63
Income tax expense reported in net income	$ 50,500	$ 14,915	$ 76,695	$ 128,264	$ 135,252

Federal, State and Local Taxe_6

Federal, State and Local Taxes - Reconciliation of Statutory Federal Income Tax Expense (Benefit) Reported in Net Income to Combined Actual Income Tax Expense (Benefit) (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%	21.00%	21.00%

Federal, State and Local Taxe_7

Federal, State and Local Taxes - Changes in Liability for Unrecognized Gross Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Uncertain tax positions at beginning of year	$ 35,749	$ 33,357	$ 33,681
Additions for tax positions relating to current-year operations	830	925
Additions for tax positions relating to prior tax years	1,547	2,036	1,660
Subtractions for tax positions relating to prior tax years	(306)	(569)	(1,984)
Uncertain tax positions at end of year	$ 37,820	$ 35,749	$ 33,357

Derivative and Hedging Activi_3

Derivative and Hedging Activities - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Interest income	$ 317,659	$ 244,467	$ 1,100,142	$ 957,400	$ 1,030,995
Gain (losses) on interest rate derivatives designated as cash flow hedge	5,900		11,800
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net	24,100		23,500
Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	2,000,000		2,000,000
Interest income	12,000	$ 3,900	34,600	3,400
Interest Rate Swap | Cash Flow Hedging
Derivative [Line Items]
Derivative, notional amount	2,250,000		2,250,000	$ 800,000
Interest Rate Swap | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	2,000,000		2,000,000
Interest Rate Swap | Designated as Hedging Instrument | LCH
Derivative [Line Items]
Derivative, notional amount	$ 4,300,000		$ 4,300,000

Derivative and Hedging Activi_4

Derivative and Hedging Activities - Schedule of Cumulative Basis Adjustment for Fair Value Hedges (Details) - Loans and Leases - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020		Dec. 31, 2019	[1]
Derivative [Line Items]
Cumulative Amount of Fair Value Hedging Adjustments Included in the Carrying Amount of the Hedged Assets	$ 48,000	$ 73,200
Fair Value Hedging
Derivative [Line Items]
Carrying Amount of the Hedged Assets	2,047,999	2,073,214	[1]	$ 2,053,483
Cumulative Amount of Fair Value Hedging Adjustments Included in the Carrying Amount of the Hedged Assets	$ 47,999	$ 73,214	[1]	$ 53,483
[1]	These amounts include the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the last layer expected to be remaining at the end of the hedging relationship. At December 31, 2020, the amortized cost basis of the closed portfolios used in these hedging relationships was $3.6 billion; the cumulative basis adjustments associated with these hedging relationships was $73.2 million; and the amount of the designated hedged items was $2.0 billion.

Derivative and Hedging Activi_5

Derivative and Hedging Activities - Schedule of Cumulative Basis Adjustment for Fair Value Hedges (Parenthetical) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	$ 2,000	$ 2,000
Loans and Leases
Derivative [Line Items]
Amortized cost basis	3,400	3,600
Cumulative basis adjustment associated with hedging relationships	$ 48	$ 73.2

Derivative and Hedging Activi_6

Derivative and Hedging Activities - Information Regarding Derivative Financial Instruments (Details) - Designated as Hedging Instrument - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Amount of designated hedged items	$ 2,000,000	$ 2,000,000
Fair Value Hedging
Derivative [Line Items]
Amount of designated hedged items	2,000,000	2,000,000
Fair Value Hedging | Other Assets
Derivative [Line Items]
Derivative Asset	0
Fair Value Hedging | Other Liabilities
Derivative [Line Items]
Derivative Liabilities	0
Interest Rate Swap
Derivative [Line Items]
Amount of designated hedged items	2,000,000	2,000,000
Interest Rate Swap | Fair Value Hedging
Derivative [Line Items]
Amount of designated hedged items	2,000,000	$ 2,000,000
Interest Rate Swap | Fair Value Hedging | Other Assets
Derivative [Line Items]
Derivative Asset	0
Interest Rate Swap | Fair Value Hedging | Other Liabilities
Derivative [Line Items]
Derivative Liabilities	$ 0

Derivative and Hedging Activi_7

Derivative and Hedging Activities - Effect of Derivative Instruments on Consolidated Statements of Income and Comprehensive Income (Details) - Interest Income - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Interest Rate Swap
Derivative [Line Items]
Interest income	$ 25,215	$ (28,130)	$ (19,731)	$ (53,483)
Hedged Item - Loans
Derivative [Line Items]
Interest income	$ (25,215)	$ 28,130	$ 19,731	$ 53,483

Derivative and Hedging Activi_8

Derivative and Hedging Activities - Information about Interest Rate Swaps Designated as Cash Flow Hedges (Details) - Interest Rate Swap - Cash Flow Hedging - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Notional amounts	$ 2,250,000	$ 2,250,000	$ 800,000
Cash collateral posted	$ 35,109	$ 45,532	$ 1,185
Weighted average pay rates	1.27%	1.27%	1.62%
Weighted average receive rates	0.20%	0.23%	1.90%
Weighted average maturity	1 year 8 months 12 days	1 year 10 months 24 days	2 years 6 months

Derivative and Hedging Activi_9

Derivative and Hedging Activities - Effect of Cash Flow Derivative Instruments on AOCL (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Amount of gain (loss) recognized in AOCL	$ 4,532	$ (49,285)	$ (58,484)	$ 1,340
Amount of gain (loss) reclassified from AOCL to interest expense	$ 5,891	$ (645)	$ 11,768	$ (154)

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Securities held to maturity, mortgaged related securities, pledged	$ 898,300	$ 651,300
Securities available for sale, other securities, pledged	379,800	721,000
Loans pledged to FHLB, collateral for wholesale borrowings	33,500,000	32,600,000
Commitments	2,851,096
Commitments to purchase securities	19,800
Total loan commitments
Loss Contingencies [Line Items]
Commitments	2,475,220	2,000,000
Commercial, performance stand-by, and financial stand-by letters of credit
Loss Contingencies [Line Items]
Commitments	$ 375,876	$ 509,900

Commitments and Contingencies_2

Commitments and Contingencies - Off-Balance-Sheet Originate Loans and Letters of Credit (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Commitments	$ 2,851,096
Total loan commitments
Loss Contingencies [Line Items]
Commitments	2,475,220	$ 2,000,000
Commercial, performance stand-by, and financial stand-by letters of credit
Loss Contingencies [Line Items]
Commitments	375,876	$ 509,900
Multi-family and commercial real estate
Loss Contingencies [Line Items]
Commitments	411,661
Multi-family and commercial real estate | Multifamily And Commercial Real Estate Loans
Loss Contingencies [Line Items]
Commitments	310,261
Multi-family and commercial real estate | One-to-Four Family
Loss Contingencies [Line Items]
Commitments	801
Multi-family and commercial real estate | Acquisition, Development, and Construction
Loss Contingencies [Line Items]
Commitments	100,599
Other loan commitments
Loss Contingencies [Line Items]
Commitments	$ 2,063,559

Commitments and Contingencies_3

Commitments and Contingencies - Guarantees and Indemnifications (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Loss Contingencies [Line Items]
Expires Within One Year	$ 171,709
Expires After One Year	51,762
Total Outstanding Amount	223,471
Maximum Potential Amount of Future Payments	375,876
Financial stand-by letters of credit
Loss Contingencies [Line Items]
Expires Within One Year	164,498
Expires After One Year	50,724
Total Outstanding Amount	215,222
Maximum Potential Amount of Future Payments	354,225
Performance stand-by letters of credit
Loss Contingencies [Line Items]
Expires Within One Year	3,351
Total Outstanding Amount	3,351
Maximum Potential Amount of Future Payments	3,351
Commercial Letters of Credit
Loss Contingencies [Line Items]
Expires Within One Year	3,860
Expires After One Year	1,038
Total Outstanding Amount	4,898
Maximum Potential Amount of Future Payments	$ 18,300

Intangible Assets - Additional

Intangible Assets - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2021
Goodwill [Line Items]
Goodwill	$ 2,426,379,000	$ 2,426,379,000	$ 2,426,379,000
Change in goodwill	$ 0
Peter B. Cannell & Co.
Goodwill [Line Items]
Goodwill, written off related to sale of business Unit		$ 9,800,000

Pension and Other Post-Retire_3

Pension and Other Post-Retirement Benefits And Employee Benefits - Retirement Plan, Based on Measurement Date (Detail) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2021		Mar. 31, 2020		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Change in Plan Assets:
Fair value of assets at beginning of year	$ 261,030
Fair value of assets at end of year					$ 261,030
Pension Benefits
Change in Benefit Obligation:
Benefit obligation at beginning of year	172,132		$ 159,896		159,896	$ 143,235
Interest cost	912	[1]	1,173	[1]	4,692	5,660	$ 5,085
Actuarial loss (gain)					14,629	18,806
Annuity payments					(6,510)	(6,473)
Settlements					(575)	(1,332)
Benefit obligation at end of year					172,132	159,896	143,235
Change in Plan Assets:
Fair value of assets at beginning of year	$ 261,030		$ 242,558		242,558	210,246
Actual return (loss) on plan assets					25,557	40,117
Annuity payments					(6,510)	(6,473)
Settlements					(575)	(1,332)
Fair value of assets at end of year					261,030	242,558	$ 210,246
Funded status (included in "Other assets")					88,898	82,662
Changes recognized in other comprehensive income for the year ended December 31:
Amortization of actuarial loss					(7,327)	(10,035)
Net actuarial (gain) loss arising during the year					4,577	(7,378)
Total recognized in other comprehensive income for the year (pre-tax)					(2,750)	(17,413)
Accumulated other comprehensive loss (pre-tax) not yet recognized in net periodic benefit cost at December 31:
Actuarial loss, net					73,017	75,767
Total accumulated other comprehensive loss (pre-tax)					$ 73,017	$ 75,767
[1]	Amounts are included in G&A expense on the Consolidated Statements of Income and Comprehensive Income.

Pension and Other Post-Retire_4

Pension and Other Post-Retirement Benefits And Employee Benefits - Additional Information (Detail) - USD ($)	3 Months Ended				12 Months Ended
	Mar. 31, 2021		Mar. 31, 2020	[1]	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Percentage of company stock held equal to plan assets					12.00%
Period of obligations for retired lives in trust					30 years
Long term inflation rate					2.50%
Company's contribution					$ 5,700,000	$ 0
Contribution to Health & Welfare Plan to pay premiums and claims in the next fiscal year					$ 915,000
Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on equity security					6.00%
Expected rate of return on fixed income security					3.00%
Overall expected rate of return					5.00%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected rate of return on equity security					8.00%
Expected rate of return on fixed income security					5.00%
Overall expected rate of return					7.00%
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Estimated unrecognized net actuarial loss (gain) that will be amortized from accumulated other comprehensive loss into net periodic benefit cost					$ 6,900,000
Amount recognized of net actuarial loss into net periodic benefit cost	$ 1,732,000	[1]	$ 1,831,000		7,327,000	$ 10,035,000	$ 7,179,000
Estimated prior service cost that will be amortized from accumulated other comprehensive loss (gain) into net periodic benefit cost					0
Amortization of past-service liability					$ 0
Discount rates used to determine the benefit obligation					2.20%	3.00%
Percentage of assets allocated to equities to be considered well funded					55.00%
Percentage of assets allocated to fixed income to be considered well funded					44.00%
Defined benefit plan cash equivalent portfolio percentage					1.00%
Expected contribution to defined benefit plan for the fiscal year	0
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Estimated unrecognized net actuarial loss (gain) that will be amortized from accumulated other comprehensive loss into net periodic benefit cost					$ 46,000	$ 249,000
Amount recognized of net actuarial loss into net periodic benefit cost	11,000	[1]	6,000		25,000	124,000	309,000
Amortization of past-service liability	(62,000)	[1]	$ (62,000)		$ (249,000)	$ (249,000)	$ (249,000)
Discount rates used to determine the benefit obligation					2.00%	2.90%
Expected contribution to defined benefit plan for the fiscal year	$ 915,000
[1]	Amounts are included in G&A expense on the Consolidated Statements of Income and Comprehensive Income.

Pension and Other Post-Retire_5

Pension and Other Post-Retirement Benefits And Employee Benefits - Pension and Post-Retirement Plans (Details) - USD ($)	3 Months Ended				12 Months Ended
	Mar. 31, 2021	[1]	Mar. 31, 2020	[1]	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Pension Benefits
Components of net periodic pension expense (credit):
Interest cost	$ 912,000		$ 1,173,000		$ 4,692,000	$ 5,660,000	$ 5,085,000
Amortization of prior-service liability					0
Expected return on plan assets	(4,016,000)		(3,876,000)		(15,505,000)	(13,933,000)	(16,139,000)
Amortization of net actuarial loss	1,732,000		1,831,000		7,327,000	10,035,000	7,179,000
Net periodic pension (credit) expense	(1,372,000)		(872,000)		(3,486,000)	1,762,000	(3,875,000)
Post-Retirement Benefits
Components of net periodic pension expense (credit):
Interest cost	56,000		82,000		327,000	512,000	513,000
Amortization of prior-service liability	(62,000)		(62,000)		(249,000)	(249,000)	(249,000)
Amortization of net actuarial loss	11,000		6,000		25,000	124,000	309,000
Net periodic pension (credit) expense	$ 5,000		$ 26,000		$ 103,000	$ 387,000	$ 573,000
[1]	Amounts are included in G&A expense on the Consolidated Statements of Income and Comprehensive Income.

Pension and Other Post-Retire_6

Pension and Other Post-Retirement Benefits And Employee Benefits - Weighted Average Assumptions Used in Determining Net Periodic Benefit Cost for Pension (Detail) - Pension Benefits	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.00%	4.10%	3.40%
Expected rate of return on plan assets	6.50%	6.80%	7.00%

Pension and Other Post-Retire_7

Pension and Other Post-Retirement Benefits And Employee Benefits - Fair Value Measurements of Investments Held by Retirement Plan (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	$ 261,030
Common Stock | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	31,401
Money Market | Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	5,237
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	33,722
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common Stock | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	31,401
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money Market | Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	2,321
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	227,308
Significant Other Observable Inputs (Level 2) | Money Market | Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	2,916
Large-Cap Value | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	23,206	[1]
Large-Cap Value | Significant Other Observable Inputs (Level 2) | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	23,206	[1]
Large-Cap Growth | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	22,997	[2]
Large-Cap Growth | Significant Other Observable Inputs (Level 2) | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	22,997	[2]
Large-Cap Core | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	15,146	[3]
Large-Cap Core | Significant Other Observable Inputs (Level 2) | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	15,146	[3]
United States Mid Cap Value | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	4,509	[4]
United States Mid Cap Value | Significant Other Observable Inputs (Level 2) | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	4,509	[4]
Mid Cap Growth | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	6,316	[5]
Mid Cap Growth | Significant Other Observable Inputs (Level 2) | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	6,316	[5]
Mid Cap Core | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	5,113	[6]
Mid Cap Core | Significant Other Observable Inputs (Level 2) | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	5,113	[6]
US Small-Cap Value | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	3,307	[7]
US Small-Cap Value | Significant Other Observable Inputs (Level 2) | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	3,307	[7]
Small Cap Value Growth | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	8,674	[8]
Small Cap Value Growth | Significant Other Observable Inputs (Level 2) | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	8,674	[8]
Small-Cap Core | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	3,400	[9]
Small-Cap Core | Significant Other Observable Inputs (Level 2) | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	3,400	[9]
International Equity | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	32,248	[10]
International Equity | Significant Other Observable Inputs (Level 2) | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	32,248	[10]
U.S. Core | Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	74,523	[11]
U.S. Core | Significant Other Observable Inputs (Level 2) | Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	74,523	[11]
Intermediate Duration | Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	24,953	[12]
Intermediate Duration | Significant Other Observable Inputs (Level 2) | Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets	$ 24,953	[12]
[1]	This category contains large-cap stocks with above-average yield. The portfolio typically holds between 60 and 70 stocks.
[2]	This category seeks long-term capital appreciation by investing primarily in large growth companies based in the U.S.
[3]	This fund tracks the performance of the S&P 500 Index by purchasing the securities represented in the Index in approximately the same weightings as the Index.
[4]	This category employs an indexing investment approach designed to track the performance of the CRSP US Mid-Cap Value Index.
[5]	This category employs an indexing investment approach designed to track the performance of the CRSP US Mid-Cap Growth Index.
[6]	This category seeks to track the performance of the S&P Midcap 400 Index.
[7]	This category consists of a selection of investments based on the Russell 2000 Value Index.
[8]	This category consists of a mutual fund invested in small cap growth companies along with a fund invested in a selection of investments based on the Russell 2000 Growth Index.
[9]	This category consists of a mutual fund investing in readily marketable securities of U.S. companies with market capitalizations within the smallest 10% of the market universe, or smaller than the 1000th largest US company.
[10]	This category invests primarily in medium to large non-US companies in developed and emerging markets. Under normal circumstances, at least 80% of total assets will be invested in equity securities, including common stocks, preferred stocks, and convertible securities.
[11]	This category currently includes equal investments in three mutual funds, two of which usually hold at least 80% of fund assets in investment grade fixed income securities, seeking to outperform the Barclays US Aggregate Bond Index while maintaining a similar duration to that index. The third fund targets investments of 50% or more in mortgage-backed securities guaranteed by the US government and its agencies.
[12]	This category consists of a mutual fund which invest in a diversified portfolio of high-quality bonds and other fixed income securities, including U.S. Government obligations, mortgage-related and asset backed securities, corporate and municipal bonds, CMOs, and other securities mostly rated A or better.

Pension and Other Post-Retire_8

Pension and Other Post-Retirement Benefits And Employee Benefits - Fair Value Measurements of Investments Held by Retirement Plan (Parenthetical) (Detail)	Dec. 31, 2020FundStock
Large-Cap Value | Minimum | Common/Collective Trusts - Equity
Defined Benefit Plan Disclosure [Line Items]
Number of stocks held	60
Large-Cap Value | Maximum | Common/Collective Trusts - Equity
Defined Benefit Plan Disclosure [Line Items]
Number of stocks held	70
Small-Cap Core | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Mutual fund investment in marketable securities with percentage of market capitalization	10.00%
International Equity | Minimum | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Percentage of investments	80.00%
U.S. Core | Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Number of mutual funds | Fund	3
U.S. Core | Fixed Income Funds | Mortgage-backed Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of investments	50.00%
U.S. Core | Minimum | Fixed Income Funds | Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of investments	80.00%

Pension and Other Post-Retire_9

Pension and Other Post-Retirement Benefits And Employee Benefits - Weighted Average Asset Allocations for Retirement Plan (Detail)	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocation	100.00%	100.00%
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocation	60.00%	58.00%
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocation	38.00%	40.00%
Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocation	2.00%	2.00%

Pension and Other Post-Retir_10

Pension and Other Post-Retirement Benefits And Employee Benefits - Expected Future Annuity Payments by Retirement Plan (Detail) - Pension Benefits $ in Thousands	Dec. 31, 2020USD ($)
Defined Benefit Plan Disclosure [Line Items]
2021	$ 7,995
2022	8,073
2023	8,060
2024	8,302
2025	8,567
2026 and thereafter	43,728
Total	$ 84,725

Pension and Other Post-Retir_11

Pension and Other Post-Retirement Benefits And Employee Benefits - Certain Information Regarding Health and Welfare Plan (Detail) - Post-Retirement Benefits - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2021		Mar. 31, 2020		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Change in benefit obligation:
Benefit obligation at beginning of year	$ 11,849		$ 11,898		$ 11,898	$ 13,583
Interest cost	$ 56	[1]	$ 82	[1]	327	512	$ 513
Actuarial gain					238	(1,233)
Premiums and claims paid					(614)	(964)
Benefit obligation at end of year					11,849	11,898	$ 13,583
Change in Plan Assets:
Employer contribution					614	964
Premiums and claims paid					(614)	(964)
Funded status (included in "Other liabilities")					(11,849)	(11,898)
Changes recognized in other comprehensive income for the year ended December 31:
Amortization of prior service cost					249	249
Amortization of actuarial gain					(25)	(124)
Net actuarial (gain) loss arising during the year					238	(1,234)
Total recognized in other comprehensive income for the year (pre-tax)					462	(1,109)
Accumulated other comprehensive loss (pre-tax) not yet recognized in net periodic benefit cost at December 31:
Prior service cost					(287)	(536)
Actuarial loss, net					1,679	1,466
Total accumulated other comprehensive loss (pre-tax)					$ 1,392	$ 930
[1]	Amounts are included in G&A expense on the Consolidated Statements of Income and Comprehensive Income.

Pension and Other Post-Retir_12

Pension and Other Post-Retirement Benefits And Employee Benefits - Weighted Average Assumptions used in Determining Net Periodic Benefit Cost of Health and Welfare Plan (Detail) - Post-Retirement Benefits	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.90%	3.90%	3.30%
Current medical trend rate	6.50%	6.50%	6.50%
Ultimate trend rate	5.00%	5.00%	5.00%
Year when ultimate trend rate will be reached	2026	2025	2024

Pension and Other Post-Retir_13

Pension and Other Post-Retirement Benefits And Employee Benefits - Expected Future Payments for Premiums and Claims Under Health and Welfare Plan (Detail) - Post-Retirement Benefits $ in Thousands	Dec. 31, 2020USD ($)
Defined Benefit Plan Disclosure [Line Items]
2021	$ 915
2022	881
2023	851
2024	820
2025	789
2026 and thereafter	3,451
Total	$ 7,707

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Activity for Performance-Based Restricted Stock Units (Details) - shares	3 Months Ended	12 Months Ended		24 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Granted		2,421,345
Performance Based Restricted Stock Units
Unvested at beginning of year	477,872
Granted	307,479	446,181	418,674	477,872
Unvested at end of year	785,351	477,872		477,872
Performance Period	January 1, 2021 - December 31, 2023
Expected Vesting Date	Mar. 31, 2024

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Details)	3 Months Ended		12 Months Ended			24 Months Ended
	Mar. 31, 2021USD ($)$ / sharesshares	Mar. 31, 2020USD ($)$ / sharesshares	Dec. 31, 2020USD ($)AGE$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2020USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant | shares	8,481,554		11,913,461			11,913,461
Shares granted | shares			2,421,345
Shares granted, weighted average grant date fair value | $ / shares			$ 11.61
Unrecognized compensation cost relating to unvested restricted stock | $			$ 52,500,000			$ 52,500,000
Unrecognized compensation cost relating to unvested restricted stock, recognition period (in years)			2 years 9 months 18 days
Employer Discretionary Contribution Amount | $			$ 5,700,000	$ 0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, vesting period			5 years
Shares granted | shares	3,029,949	2,387,645	2,421,345
Shares granted, weighted average grant date fair value | $ / shares	$ 11.15	$ 11.64	$ 11.61
Compensation and benefits expense | $	$ 8,000,000	$ 7,800,000	$ 28,400,000	$ 30,900,000	$ 36,300,000
Unrecognized compensation cost relating to unvested restricted stock | $	$ 77,600,000
Unrecognized compensation cost relating to unvested restricted stock, recognition period (in years)	3 years 7 months 6 days
Forfeited shares | shares	59,260		528,507
Performance Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted | shares	307,479		446,181	418,674		477,872
Compensation and benefits expense | $	$ 586,000,000	407,000,000
Unrecognized compensation cost relating to unvested restricted stock | $	$ 6,300,000		$ 3,100,000			$ 3,100,000
Unrecognized compensation cost relating to unvested restricted stock, recognition period (in years)	2 years 1 month 6 days		1 year 9 months 18 days
Vesting rights, description			Included in this total are 446,181 shares granted during the twelve months ended December 31, 2020, which have a performance period of January 1, 2020 to December 31, 2022 and vest on April 1, 2023, subject to adjustment or forfeiture, based upon the achievement by the Company of certain performance standards. During the twelve months ended December 31, 2020, 386,983 shares were forfeited. The Company granted 418,674 PSUs during 2019, which have a performance period of January 1, 2019 to December 31, 2021 and vest on April 1, 2022, subject to adjustment or forfeiture, based upon the achievement by the Company of certain performance standards.
Compensation and benefits expense | $			$ 1,000,000	$ 1,100,000
Forfeited shares | shares			386,983
Stock Incentive Plan Twenty Twelve | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted | shares				2,031,198	2,543,023
Shares granted, weighted average grant date fair value | $ / shares				$ 10.45	$ 13.50
Four Zero One K Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer Discretionary Contribution Amount | $	$ 1,700,000	$ 1,600,000
Supplemental Executive Retirement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Trust held assets of Supplemental Executive Retirement Plan (SERP), shares | shares			2,191,915	2,046,449		2,191,915
Share-based Payment Arrangement, Tranche One | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, vesting period	1 year	1 year
Share-based Payment Arrangement, Tranche Two | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, vesting period	5 years	5 years
New York Community Bank
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Full-time employees, age to participate in plan | AGE			21
Description of the ESOP Plan			All full-time employees who have attained 21 years of age and have completed twelve consecutive months of credited service are eligible to participate in the ESOP, with benefits vesting on a six-year basis
Shares granted, vesting period			6 years
Allocated shares to participants in the ESOP | shares			405,167	349,356	529,531	405,167
ESOP-related compensation expense | $			$ 4,300,000	$ 4,200,000	$ 5,000,000
New York Community Bank | Third year of employment
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares vested			20.00%
New York Community Bank | Each successive year after third year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares vested			20.00%

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Activity for Restricted Stock Awards (Details) - $ / shares	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Number of Shares
Shares granted			2,421,345
Weighted Average Grant Date Fair Value
Shares granted, weighted average grant date fair value			$ 11.61
Restricted Stock
Number of Shares
Unvested at beginning of year	6,228,048	6,516,101	6,516,101
Shares granted	3,029,949	2,387,645	2,421,345
Vested	(1,918,654)		(2,180,891)
Canceled	(59,260)		(528,507)
Unvested at end of year	7,280,083		6,228,048
Weighted Average Grant Date Fair Value
Unvested at beginning of year	$ 12.43	$ 13.31	$ 13.31
Shares granted, weighted average grant date fair value	11.15	$ 11.64	11.61
Vested	13.21		14.06
Canceled	11.65		12.88
Unvested at end of year	$ 11.70		$ 12.43

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		$ 6,193,706	$ 5,844,909	[1]	$ 5,885,887	[2]
Total equity securities		15,801	31,576		32,830
Total securities		6,193,706	5,844,909		5,885,887
Asset-backed Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale	[3]		527,099		373,254
Mutual Funds and Common Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale	[4]				17,416
Mutual Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		15,801	16,083
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		6,177,905	5,813,333		5,853,057
Total equity securities		15,801	31,576		32,830
Total securities		6,193,706	5,844,909		5,885,887
Fair Value, Measurements, Recurring | Preferred Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities			15,493		15,414
Fair Value, Measurements, Recurring | Mutual Funds and Common Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities			16,083		17,416
Fair Value, Measurements, Recurring | Mutual Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities		15,801	16,083
Fair Value, Measurements, Recurring | Mortgage-Related Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		3,195,588	3,038,325		3,353,735
Fair Value, Measurements, Recurring | Mortgage-Related Securities | GSE Certificates
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		1,209,318	1,209,610		1,552,623
Fair Value, Measurements, Recurring | Mortgage-Related Securities | GSE CMOs
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		1,986,270	1,828,715		1,801,112
Fair Value, Measurements, Recurring | Other Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		2,982,317	2,775,008		2,499,322
Fair Value, Measurements, Recurring | Other Securities | U. S. Treasury Obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		64,998	64,985		41,839
Fair Value, Measurements, Recurring | Other Securities | GSE Debentures
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		1,368,341	1,158,302		1,094,240
Fair Value, Measurements, Recurring | Other Securities | Asset-backed Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		520,773	527,099		373,254
Fair Value, Measurements, Recurring | Other Securities | Municipal Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		26,011	26,311		26,892
Fair Value, Measurements, Recurring | Other Securities | Corporate Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		882,070	882,226		867,182
Fair Value, Measurements, Recurring | Other Securities | Foreign Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		25,993	25,538
Fair Value, Measurements, Recurring | Other Securities | Capital Trust Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		94,131	90,547		95,915
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		64,998	64,985		41,839
Total equity securities			15,493		15,414
Total securities		64,998	80,478		57,253
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Preferred Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities			15,493		15,414
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual Funds and Common Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities					17,416
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		64,998	64,985		41,839
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Securities | U. S. Treasury Obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		64,998	64,985		41,839
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		6,112,907	5,748,348		5,811,218
Total equity securities		15,801	16,083		17,416
Total securities		6,128,708	5,764,431		5,828,634
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mutual Funds and Common Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities			16,083
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mutual Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total equity securities		15,801	16,083
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-Related Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		3,195,588	3,038,325		3,353,735
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-Related Securities | GSE Certificates
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		1,209,318	1,209,610		1,552,623
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-Related Securities | GSE CMOs
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		1,986,270	1,828,715		1,801,112
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		2,917,319	2,710,023		2,457,483
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other Securities | GSE Debentures
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		1,368,341	1,158,302		1,094,240
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other Securities | Asset-backed Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		520,773	527,099		373,254
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other Securities | Municipal Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		26,011	26,311		26,892
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other Securities | Corporate Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		882,070	882,226		867,182
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other Securities | Foreign Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		25,993	25,538
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other Securities | Capital Trust Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available for sale		$ 94,131	$ 90,547		$ 95,915
[1]	Excludes accrued interest receivable of $14.9 million included in other assets in the Consolidated Statements of Condition.
[2]	Excludes accrued interest receivable of $24.4 million included in other assets in the Consolidated Statements of Condition.
[3]	The underlying assets of the asset-backed securities are substantially guaranteed by the U.S. Government.
[4]	Primarily consists of mutual funds that are CRA-qualified investments.

Fair Value Measurements - Chang

Fair Value Measurements - Changes in Fair Value of Loans Held for Sale (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)	[1]
Fair Value Option Quantitative Disclosures [Line Items]
Mortgage Banking Income	$ (224)
Mortgage Servicing Rights
Fair Value Option Quantitative Disclosures [Line Items]
Mortgage Banking Income	$ (224)
[1]	Included in “Non-interest income.

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Carrying Values, Estimated Fair Values and Fair Value Measurement Levels of Financial Instruments (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands		Mar. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Certain loans	[1]	$ 23,172		$ 41,066	[2]	$ 42,767
Other assets		10,583	[3]	5,655	[3],[4]	1,481	[5]
Total		33,755		46,721		44,248
Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Certain loans	[1]	23,172		41,066	[2]	42,767
Other assets		10,583	[3]	5,655	[3],[4]	1,481	[5]
Total		$ 33,755		$ 46,721		$ 44,248
[1]	Represents the fair value of impaired loans, based on the value of the collateral
[2]	Represents the fair value of certain loans individually assessed for impairment, based on the value of the collateral.
[3]	Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets and equity investments without readily determinable fair values. These equity investments are classified as Level 3 due to the infrequency of the observable prices and/or the restrictions on the shares.
[4]	Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets and equity securities without readily determinable fair values. These equity securities are classified as Level 3 due to the infrequency of the observable prices and/or the restrictions on the shares.
[5]	Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets.

Fair Value Measurements - Ass_2

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financial Assets:
Cash and cash equivalents, Carrying Value		$ 2,722,915	$ 1,947,931	$ 741,870	$ 1,474,955	$ 2,528,169
Cash and cash equivalents, Estimated Fair Value		2,722,915	1,947,931	741,870
FHLB stock, Carrying Value	[1]	698,984	714,005	647,562
FHLB stock, Estimated Fair Value	[1]	698,984	714,005	647,562
Loans and leases, net, Carrying Value		43,068,816	42,806,691	41,746,517
Loans and leases, net, Estimated Fair Value		42,433,118	42,376,214	41,699,929
Financial Liabilities:
Deposits, Carrying Value		34,197,136	32,436,813	31,657,132
Deposits, Estimated Fair Value		34,215,071	32,466,013	31,713,945
Borrowed funds, Carrying Value		15,758,787	16,083,544	14,557,593
Borrowed funds, Estimated Fair Value		16,475,503	16,794,338	14,882,776
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets:
Cash and cash equivalents, Carrying Value		2,722,915	1,947,931	741,870
Financial Liabilities:
Deposits, Carrying Value	[2]	24,582,838	22,106,133	17,442,274
Significant Other Observable Inputs (Level 2)
Financial Assets:
FHLB stock, Carrying Value	[1]	698,984	714,005	647,562
Financial Liabilities:
Deposits, Carrying Value	[3]	9,632,233	10,359,880	14,271,671
Borrowed funds, Carrying Value		16,475,503	16,794,338	14,882,776
Significant Unobservable Inputs (Level 3)
Financial Assets:
Loans and leases, net, Carrying Value		$ 42,433,118	$ 42,376,214	$ 41,699,929
[1]	Carrying value and estimated fair value are at cost.
[2]	Interest-bearing checking and money market accounts, savings accounts, and non-interest-bearing accounts.
[3]	Certificates of deposit.

Dividend Restrictions - Additio

Dividend Restrictions - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)
Equity [Abstract]
Dividend paid to the parent company	$ 380
Additional dividends that could have been paid to the Parent Company without regulatory approval	$ 301.6

Parent Company Only Financial_3

Parent Company Only Financial Information - Condensed Statements of Condition (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
ASSETS:
Cash and cash equivalents	$ 2,722,915	$ 1,947,931		$ 741,870	$ 1,474,955	$ 2,528,169
Other assets	827,571	839,380		436,460
Total assets	57,656,892	56,306,120		53,640,821
LIABILITIES AND STOCKHOLDERS' EQUITY:
Junior subordinated debentures	360,362	360,259		359,866
Other liabilities	642,360	677,273		428,411
Total liabilities	50,860,452	49,464,476		46,929,127
Stockholders' equity	6,796,440	6,841,644	$ 6,637,385	6,711,694	6,655,235	6,795,376
Total liabilities and stockholders' equity	$ 57,656,892	56,306,120		53,640,821
Parent Company
ASSETS:
Cash and cash equivalents		151,205		183,063	$ 228,618	$ 90,536
Investments in subsidiaries		7,333,764		7,169,066
Receivables from subsidiaries				2,249
Other assets		23,342		23,338
Total assets		7,508,311		7,377,716
LIABILITIES AND STOCKHOLDERS' EQUITY:
Junior subordinated debentures		360,259		359,866
Subordinated notes		295,624		295,066
Other liabilities		10,784		11,090
Total liabilities		666,667		666,022
Stockholders' equity		6,841,644		6,711,694
Total liabilities and stockholders' equity		$ 7,508,311		$ 7,377,716

Parent Company Only Financial_4

Parent Company Only Financial Information - Condensed Statements of Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Interest income	$ 423,108	$ 441,042	$ 1,707,993	$ 1,805,160	$ 1,689,673
Dividends received from subsidiaries			(380,000)
Other income	2,461	1,958	6,039	18,845	35,535
Income tax benefit	(50,500)	(14,915)	(76,695)	(128,264)	(135,252)
Net income	$ 145,596	$ 100,328	511,109	395,043	422,417
Parent Company
Condensed Financial Statements, Captions [Line Items]
Interest income			293	668	500
Dividends received from subsidiaries			380,000	380,000	380,000
Other income			582	716	793
Gross income			380,875	381,384	381,293
Operating expenses			51,730	49,926	59,372
Income before income tax benefit and equity in underdistributed earnings of subsidiaries			329,145	331,458	321,921
Income tax benefit			14,163	13,669	16,616
Income before equity in underdistributed earnings of subsidiaries			343,308	345,127	338,537
Equity in underdistributed earnings of subsidiaries			167,801	49,916	83,880
Net income			$ 511,109	$ 395,043	$ 422,417

Parent Company Only Financial_5

Parent Company Only Financial Information - Condensed Statements of Cash Flow (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2021		Mar. 31, 2020		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 145,596		$ 100,328		$ 511,109		$ 395,043		$ 422,417
Change in other assets	7,891	[1]	(34,397)	[1]	(411,074)	[2]	(55,825)	[2]	29,952	[2]
Change in other liabilities	(28,007)	[3]	(20,813)	[3]	8,619	[4]	10,571	[4]	(53,320)	[4]
Net cash provided by operating activities	123,614		130,696		334,196		509,750		540,355
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash used in investing activities	(681,179)		(104,296)		(1,025,359)		(2,058,907)		(4,020,466)
CASH FLOWS FROM FINANCING ACTIVITIES:
Treasury stock repurchased			(28,924)		(50,190)		(67,125)		(160,767)
Net cash provided by financing activities	1,332,549		565,936		1,897,224		816,072		2,426,897
Net increase (decrease) in cash, cash equivalents, and restricted cash	774,984		592,336		1,206,061		(733,085)		(1,053,214)
Cash, cash equivalents, and restricted cash at beginning of year	1,947,931		741,870		741,870		1,474,955		2,528,169
Cash and cash equivalents at end of year	2,722,915				1,947,931		741,870		1,474,955
Parent Company
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income					511,109		395,043		422,417
Change in other assets					(4)		386		256
Change in other liabilities					(306)		(2,608)		(1,152)
Other, net					30,352		32,776		36,677
Equity in underdistributed earnings of subsidiaries					(167,801)		(49,916)		(83,880)
Net cash provided by operating activities					373,350		375,681		374,318
CASH FLOWS FROM INVESTING ACTIVITIES:
Change in receivable from subsidiaries, net					2,249		4,206		(1,705)
Net cash used in investing activities					2,249		4,206		(1,705)
CASH FLOWS FROM FINANCING ACTIVITIES:
Treasury stock repurchased					(59,022)		(75,220)		(163,249)
Cash dividends paid on common and preferred stock					(348,435)		(350,222)		(365,889)
Proceeds from issuance of subordinated notes									294,607
Net cash provided by financing activities					(407,457)		(425,442)		(234,531)
Net increase (decrease) in cash, cash equivalents, and restricted cash					(31,858)		(45,555)		138,082
Cash, cash equivalents, and restricted cash at beginning of year	$ 151,205		$ 183,063		183,063		228,618		90,536
Cash and cash equivalents at end of year					$ 151,205		$ 183,063		$ 228,618
[1]	Includes $4.7 million and $4.1 million of amortization of operating lease right-of-use assets for the three months ended March 31, 2021 and 2020, respectively.
[2]	Includes $20.0 million and $38.4 million of net amortization of operating lease right-of-use assets for the twelve months ended December 31, 2020 and December 31, 2019, respectively.
[3]	Includes $4.7 million and $4.1 million of amortization of operating lease liability for the three months ended March 31, 2021 and 2020, respectively.
[4]	Includes $20.0 million and $38.4 million of net amortization of operating lease liability for the twelve months ended December 31, 2020 and December 31, 2019, respectively.

Capital - Actual Capital Amount

Capital - Actual Capital Amounts and Ratios for Community Bank in Comparison to Minimum Amounts and Ratios Required (Detail) - Company - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Common Equity, Tier 1 Amount
Total regulatory capital, Common Equity, Tier 1 Amount	$ 3,962,399	$ 3,818,311
Minimum for capital adequacy purposes, Common Equity, Tier 1 Amount	1,834,858	1,733,826
Excess, Common Equity, Tier 1 Amount	$ 2,127,541	$ 2,084,485
Common Equity, Tier 1 Ratio
Total regulatory capital, Common Equity, Tier 1 Ratio	9.72%	9.91%
Minimum for capital adequacy purposes, Common Equity, Tier 1 Ratio	4.50%	4.50%
Excess, Common Equity, Tier 1 Ratio	5.22%	5.41%
Risk-Based Capital, Tier 1 Amount
Total regulatory capital, Risk-Based Capital, Tier 1 Amount	$ 4,465,239	$ 4,321,151
Minimum for capital adequacy purposes, Risk-Based Capital, Tier 1 Amount	2,446,478	2,311,768
Excess, Risk-Based Capital, Tier 1 Amount	$ 2,018,761	$ 2,009,383
Risk-Based Capital, Tier 1 Ratio
Total regulatory capital, Risk-Based Capital, Tier 1 Ratio	10.95	11.22
Minimum for capital adequacy purposes, Risk-Based Capital, Tier 1 Ratio	6	6
Excess, Risk-Based Capital, Tier 1 Ratio	4.95	5.22
Risk-Based Capital, Total Amount
Total regulatory capital, Risk-Based Capital, Total Amount	$ 5,289,611	$ 5,111,990
Minimum for capital adequacy purposes, Risk-Based Capital, Total Amount	3,261,970	3,082,358
Excess, Risk-Based Capital, Total Amount	$ 2,027,641	$ 2,029,632
Risk-Based Capital, Total Ratio
Total regulatory capital, Risk-Based Capital, Total Ratio	12.97	13.27
Minimum for capital adequacy purposes, Risk-Based Capital, Total Ratio	8	8
Excess, Risk-Based Capital, Total Ratio	4.97	5.27
Leverage Capital, Amount
Total regulatory capital, Leverage Capital, Amount	$ 4,465,239	$ 4,321,151
Minimum for capital adequacy purposes, Leverage Capital, Amount	2,095,846	1,996,966
Excess, Leverage Capital, Amount	$ 2,369,393	$ 2,324,185
Leverage Capital, Ratio
Total regulatory capital, Leverage Capital, Ratio	8.52	8.66
Minimum for capital adequacy purposes, Leverage Capital, Ratio	4	4
Excess, Leverage Capital, Ratio	4.52	4.66

Capital - Additional Informatio

Capital - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Mar. 17, 2017	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2021	Oct. 23, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum Common equity Tier 1 risk-based capital ratio		6.50%
Minimum Tier 1 risk based capital ratio to be categorized as well capitalized		8
Minimum total risk based capital ratio to be categorized as well capitalized		10
Minimum leverage capital ratio to be categorized as well capitalized		5
Preferred stock par value		$ 0.01	$ 0.01	$ 0.01
Depositary Shares | Series A Noncumulative Preferred Stock
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Depositary shares issued	20,600,000
Preferred stock par value	$ 0.01
Preferred stock, liquidation preference per share	1,000
Depository shares, liquidation preference per share	$ 25
Fixed dividend rate per annum	6.375%
Floating dividend rate per annum	Three-month LIBOR plus 382.1 basis
Dividends payable description	Dividends will be payable in arrears on March 17, June 17, September 17, and December 17 of each year, which commenced on June 17, 2017.
Common Stock
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Stock Repurchase Program, Authorized Amount					$ 300
Stock repurchase program, shares repurchased		28,900,000
Treasury stock average price per share		$ 9.63
Treasury stock aggregate purchase price		$ 278.1
Stock repurchased during period, shares		5,000,000	7,100,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		50,200,000	67,100,000

Capital - Actual Capital Amou_2

Capital - Actual Capital Amounts and Ratios for Commercial Bank in Comparison With Minimum Amounts and Ratios Required (Detail) - Bank - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Common Equity, Tier 1 Amount
Total regulatory capital, Common Equity, Tier 1 Amount	$ 4,964,055	$ 4,785,217
Minimum for capital adequacy purposes, Common Equity, Tier 1 Amount	1,834,112	1,733,085
Excess, Common Equity, Tier 1 Amount	$ 3,129,943	$ 3,052,132
Common Equity, Tier 1 Ratio
Total regulatory capital, Common Equity, Tier 1 Ratio	12.18%	12.42%
Minimum for capital adequacy purposes, Common Equity, Tier 1 Ratio	4.50%	4.50%
Excess, Common Equity, Tier 1 Ratio	7.68%	7.92%
Risk-Based Capital, Tier 1 Amount
Total regulatory capital, Risk-Based Capital, Tier 1 Amount	$ 4,964,055	$ 4,785,217
Minimum for capital adequacy purposes, Risk-Based Capital, Tier 1 Amount	2,445,483	2,310,780
Excess, Risk-Based Capital, Tier 1 Amount	$ 2,518,572	$ 2,474,437
Risk-Based Capital, Tier 1 Ratio
Total regulatory capital, Risk-Based Capital, Tier 1 Ratio	12.18	12.42
Minimum for capital adequacy purposes, Risk-Based Capital, Tier 1 Ratio	6	6
Excess, Risk-Based Capital, Tier 1 Ratio	6.18	6.42
Risk-Based Capital, Total Amount
Total regulatory capital, Risk-Based Capital, Total Amount	$ 5,145,321	$ 4,933,900
Minimum for capital adequacy purposes, Risk-Based Capital, Total Amount	3,260,643	3,081,040
Excess, Risk-Based Capital, Total Amount	$ 1,884,678	$ 1,852,860
Risk-Based Capital, Total Ratio
Total regulatory capital, Risk-Based Capital, Total Ratio	12.62	12.81
Minimum for capital adequacy purposes, Risk-Based Capital, Total Ratio	8	8
Excess, Risk-Based Capital, Total Ratio	4.62	4.81
Leverage Capital, Amount
Total regulatory capital, Leverage Capital, Amount	$ 4,964,055	$ 4,785,217
Minimum for capital adequacy purposes, Leverage Capital, Amount	2,095,175	1,996,288
Excess, Leverage Capital, Amount	$ 2,868,880	$ 2,788,929
Leverage Capital, Ratio
Total regulatory capital, Leverage Capital, Ratio	9.48	9.59
Minimum for capital adequacy purposes, Leverage Capital, Ratio	4	4
Excess, Leverage Capital, Ratio	5.48	5.59

Subsequent Event - Additional I

Subsequent Event - Additional Information (Details) - Subsequent Event [Member] $ / shares in Units, $ in Billions	Apr. 26, 2021USD ($)StatesBranchesOffice$ / shares
Subsequent Event [Line Items]
Ownership percent expected to be owned	68.00%
Flagstar [Member]
Subsequent Event [Line Items]
Ownership percent expected to be owned	32.00%
Percentage of stock transaction value	100.00%
Implied total transaction value | $	$ 2.6
Business acquisition, share price | $ / shares	$ 4.0151
Business combination, description	Following completion of the transaction, New York Community shareholders are expected to own 68% of the combined company, while Flagstar shareholders are expected to own 32% of the combined company.
Business combination estimated total assets after merge | $	$ 87
Number of traditional branches | Branches	400
Number of retail home lending offices | Office	87
Number of state footprint | States	28
Number of states of traditional branches | States	9