Pacwest Bancorp (PACW) 10-Q 7 Nov 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 30, 2019
Cover page.
Title of 12(b) Security	Common Stock, par value $0.01 per share
Entity Address, City or Town	Beverly Hills
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90212
City Area Code	310
Local Phone Number	887-8500
Entity Current Reporting Status	Yes
Trading Symbol	PACW
Entity Incorporation, State or Country Code	DE
Entity Registrant Name	PACWEST BANCORP
Entity Address, Address Line One	9701 Wilshire Blvd., Suite 700
Entity Central Index Key	0001102112
Document Period End Date	Sep. 30, 2019
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Entity File Number	001-36408
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		118,212,594
Entity Tax Identification Number	33-0885320
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes
Entity Shell Company	false
Document Quarterly Report	true
Document Transition Report	false
Entity Small Business	false
Entity Emerging Growth Company	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
ASSETS:
Cash and due from banks	$ 252,596	$ 175,830
Interest-earning deposits in financial institutions	483,405	209,937
Total cash, cash equivalents, and restricted cash	736,001	385,767
Securities available-for-sale, at fair value	3,817,348	4,009,431
Federal Home Loan Bank stock, at cost	26,865	32,103
Total investment securities	3,844,213	4,041,534
Gross loans and leases held for investment	18,796,011	18,026,365
Deferred fees, net	(60,468)	(68,652)
Allowance for loan and lease losses	(138,552)	(132,472)
Total loans and leases held for investment, net	18,596,991	17,825,241
Equipment leased to others under operating leases	295,854	292,677
Premises and equipment, net	37,926	34,661
Foreclosed assets, net	1,366	5,299
Deferred tax asset, net	0	17,489
Goodwill	2,548,670	2,548,670
Core deposit and customer relationship intangibles, net	42,547	57,120
Other assets	621,059	522,896
Total assets	26,724,627	25,731,354
LIABILITIES AND STOCKHOLDERS' EQUITY
Noninterest-bearing deposits	7,441,185	7,888,915
Interest-bearing deposits	12,292,018	10,981,586
Total deposits	19,733,203	18,870,501
Borrowings	1,253,031	1,371,114
Subordinated debentures	456,145	453,846
Accrued interest payable and other liabilities	362,140	210,305
Total liabilities	21,804,519	20,905,766
Commitments and contingencies
Preferred stock ($0.01 par value; 5,000,000 shares authorized; none issued and outstanding)	0	0
Common stock ($0.01 par value, 200,000,000 shares authorized at March 31, 2019 and December 31, 2018; 122,204,565 and 125,079,705 shares issued, respectively, including 1,241,543 and 1,888,872 shares of unvested restricted stock, respectively)	1,219	1,251
Additional paid-in capital	3,371,032	3,722,723
Retained earnings	1,534,367	1,182,674
December 31, 2018)	(82,397)	(74,985)
Accumulated other comprehensive income (loss), net	95,887	(6,075)
Total stockholders' equity	4,920,108	4,825,588
Total liabilities and stockholders' equity	$ 26,724,627	$ 25,731,354

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2019	Dec. 31, 2018
Preferred stock par value (usd per share)	$ 0.01	$ 0.01
Preferred stock authorized (shares)	5,000,000	5,000,000
Preferred stock issued (shares)	0	0
Preferred stock outstanding (shares)	0	0
Common Stock par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	200,000,000	200,000,000
Common stock issued (shares)	121,906,949	125,079,705
Unvested restricted shares (shares)	1,623,494	1,889,872
Treasury Stock (shares)	2,077,845	1,889,872

Condensed Consolidated Statemen

Condensed Consolidated Statements of Earnings - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest expense:
Deposits	$ 40,703	$ 38,720	$ 21,121	$ 113,658	$ 51,306
Borrowings	6,852	7,210	3,814	21,772	7,383
Subordinated debentures	7,417	7,705	7,390	22,860	21,093
Total interest expense	54,972	53,635	32,325	158,290	79,782
Loans and leases	275,978	284,236	264,062	834,443	775,447
Investment securities	28,806	28,948	28,061	87,434	81,929
Deposits in financial institutions	2,424	1,349	519	4,423	1,555
Total interest income	307,208	314,533	292,642	926,300	858,931
Net interest income	252,236	260,898	260,317	768,010	779,149
Provision for credit losses	7,000	8,000	11,500	19,000	33,000
Net interest income after provision for credit losses	245,236	252,898	248,817	749,010	746,149
Noninterest income:
Other commissions and fees	10,855	11,590	12,397	33,453	34,429
Leased equipment income	9,615	9,182	9,120	28,079	28,497
Service charges on deposit accounts	3,525	3,771	3,979	11,026	12,418
Gain on sale of loans and leases	765	326	0	1,091	4,675
Gain on sale of securities	908	22,192	826	25,261	7,390
Other income	7,761	3,832	10,590	16,476	27,700
Total noninterest income	33,429	50,893	36,912	115,386	115,109
Noninterest expense:
Compensation	71,424	68,956	72,333	211,225	213,269
Occupancy	14,089	14,457	13,069	42,866	39,867
Data processing	7,044	6,817	6,740	20,786	20,295
Leased equipment depreciation	5,951	5,558	5,001	17,160	15,613
Intangible asset amortization	4,833	4,870	5,587	14,573	17,520
Other professional services	4,400	4,629	6,058	13,542	15,754
Insurance and assessments	4,100	4,098	5,446	12,236	16,503
Loan expense	3,628	3,451	2,249	9,964	7,578
Acquisition, integration and reorganization costs	0	0	800	618	800
Foreclosed assets expense (income), net	8	(146)	(257)	(109)	(440)
Other expense	11,332	12,737	11,127	35,662	35,238
Total noninterest expense	126,809	125,427	128,153	378,523	381,997
Earnings before income taxes	151,856	178,364	157,576	485,873	479,261
Income tax expense	(41,830)	(50,239)	(41,289)	(135,118)	(128,963)
Net earnings	$ 110,026	$ 128,125	$ 116,287	$ 350,755	$ 350,298
Earnings per share:
Net earnings (usd per share)	$ 0.92	$ 1.07	$ 0.94	$ 2.91	$ 2.79
Net earnings (usd per share)	$ 0.92	$ 1.07	$ 0.94	$ 2.91	$ 2.79

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019		Jun. 30, 2019		Sep. 30, 2018		Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net earnings	$ 110,026		$ 128,125		$ 116,287		$ 350,755	$ 350,298
Other comprehensive income (loss), net of tax:
Unrealized net holding gains (losses) on securities available-for-sale arising during the period	32,759		72,168		(29,267)		167,566	(106,261)
Income tax (expense) benefit related to unrealized holding gains (losses) arising during the period	(9,287)		(20,459)		8,344		(47,504)	30,377
Unrealized net holding gains (losses) on securities available-for-sale, net of tax	23,472		51,709		(20,923)		120,062	(75,884)
Reclassification adjustment for net (gains) losses included in net earnings	(908)	[1]	(22,192)	[1]	(826)	[1]	(25,261)	(7,390)
Income tax expense (benefit) related to reclassification adjustment	257		6,291		235		7,161	2,113
Reclassification adjustment for net (gains) losses included in net earnings, net of tax	(651)		(15,901)		(591)		(18,100)	(5,277)
Other comprehensive income (loss), net of tax	22,821		35,808		(21,514)		101,962	(81,161)
Comprehensive income	$ 132,847		$ 163,933		$ 94,773		$ 452,717	$ 269,137
[1]	Entire amounts are recognized in "Gain on sale of securities" on the Condensed Consolidated Statements of Earnings.

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands		Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Shares Of Common Stock	Accumulated Other Comprehensive Income (Loss)
Beginning Period Balance at Dec. 31, 2017		$ 4,977,598	$ 1,305	$ 4,287,487	$ 723,471	$ (65,836)		$ 31,171
Shares outstanding, beginning balance (shares) at Dec. 31, 2017			128,782,878
Stockholders' Equity Disclosure [Rollforward]
Cumulative effect of change in accounting principle	[1]	0			(6,136)			6,136
Net earnings		118,276			118,276
Other comprehensive income - net unrealized gain on securities available-for-sale, net of tax		(49,243)						(49,243)
Restricted stock awarded and earned compensation, net of shares forfeited (shares)			96,034
Restricted stock awarded and earned stock compensation, net of shares forfeited		7,199	$ 1	7,198
Restricted stock surrendered (shares)			(55,186)				(2,285,855)
Restricted stock surrendered		(2,858)				(2,858)
Common stock repurchased under Stock Repurchase Program		(23)
Common stock repurchased under Stock Repurchase Program		(119,793)		(119,770)
Cash dividends paid		(63,689)		(63,689)
Ending Period Balance at Mar. 31, 2018		4,867,490	$ 1,283	4,111,226	835,611	(68,694)		(11,936)
Shares outstanding, ending balance (shares) at Mar. 31, 2018			126,537,871
Beginning Period Balance at Dec. 31, 2017		4,977,598	$ 1,305	4,287,487	723,471	(65,836)		31,171
Shares outstanding, beginning balance (shares) at Dec. 31, 2017			128,782,878
Stockholders' Equity Disclosure [Rollforward]
Net earnings		350,298
Ending Period Balance at Sep. 30, 2018		4,741,685	$ 1,251	3,789,893	1,067,633	(73,238)		(43,854)
Shares outstanding, ending balance (shares) at Sep. 30, 2018			123,283,450
Beginning Period Balance at Mar. 31, 2018		4,867,490	$ 1,283	4,111,226	835,611	(68,694)		(11,936)
Shares outstanding, beginning balance (shares) at Mar. 31, 2018			126,537,871
Stockholders' Equity Disclosure [Rollforward]
Net earnings		115,735			115,735
Other comprehensive income - net unrealized gain on securities available-for-sale, net of tax		(10,404)						(10,404)
Restricted stock awarded and earned compensation, net of shares forfeited (shares)			398,132
Restricted stock awarded and earned stock compensation, net of shares forfeited		7,546	$ 4	7,542
Restricted stock surrendered (shares)			(81,172)				(2,286,881)
Restricted stock surrendered		(4,332)				(4,332)
Common stock repurchased under Stock Repurchase Program		(23)
Common stock repurchased under Stock Repurchase Program		(122,024)		(122,001)
Cash dividends paid		(76,052)		(76,052)
Ending Period Balance at Jun. 30, 2018		$ 4,777,959	$ 1,264	3,920,715	951,346	(73,026)		(22,340)
Shares outstanding, ending balance (shares) at Jun. 30, 2018			124,567,950
Dividends declared per share (usd per share)		$ 0.50
Stockholders' Equity Disclosure [Rollforward]
Net earnings		$ 116,287			116,287
Other comprehensive income - net unrealized gain on securities available-for-sale, net of tax		(21,514)						(21,514)
Restricted stock awarded and earned compensation, net of shares forfeited (shares)			(3,803)
Restricted stock awarded and earned stock compensation, net of shares forfeited		8,137		8,137
Restricted stock surrendered (shares)			(4,199)				(1,276,498)
Restricted stock surrendered		(212)				(212)
Common stock repurchased under Stock Repurchase Program		(13)
Common stock repurchased under Stock Repurchase Program		(64,577)		(64,564)
Cash dividends paid		(74,395)		(74,395)
Ending Period Balance at Sep. 30, 2018		4,741,685	$ 1,251	3,789,893	1,067,633	(73,238)		(43,854)
Shares outstanding, ending balance (shares) at Sep. 30, 2018			123,283,450
Beginning Period Balance at Dec. 31, 2018		4,825,588	$ 1,251	3,722,723	1,182,674	(74,985)		(6,075)
Shares outstanding, beginning balance (shares) at Dec. 31, 2018			123,189,833
Stockholders' Equity Disclosure [Rollforward]
Net earnings		112,604			112,604
Other comprehensive income - net unrealized gain on securities available-for-sale, net of tax		43,333						43,333
Restricted stock awarded and earned compensation, net of shares forfeited (shares)			195,536
Restricted stock awarded and earned stock compensation, net of shares forfeited		5,808	$ 2	5,806
Restricted stock surrendered (shares)			(113,544)				(3,070,676)
Restricted stock surrendered		(4,522)				(4,522)
Common stock repurchased under Stock Repurchase Program		(31)
Common stock repurchased under Stock Repurchase Program		(119,587)		(119,556)
Cash dividends paid		(73,180)		(73,180)
Ending Period Balance at Mar. 31, 2019		4,790,982	$ 1,222	3,535,793	1,296,216	(79,507)		37,258
Shares outstanding, ending balance (shares) at Mar. 31, 2019			120,201,149
Beginning Period Balance at Dec. 31, 2018		4,825,588	$ 1,251	3,722,723	1,182,674	(74,985)		(6,075)
Shares outstanding, beginning balance (shares) at Dec. 31, 2018			123,189,833
Stockholders' Equity Disclosure [Rollforward]
Net earnings		350,755
Ending Period Balance at Sep. 30, 2019		4,920,108	$ 1,219	3,371,032	1,534,367	(82,397)		95,887
Shares outstanding, ending balance (shares) at Sep. 30, 2019			119,831,192
Beginning Period Balance at Mar. 31, 2019		4,790,982	$ 1,222	3,535,793	1,296,216	(79,507)		37,258
Shares outstanding, beginning balance (shares) at Mar. 31, 2019			120,201,149
Stockholders' Equity Disclosure [Rollforward]
Net earnings		128,125			128,125
Other comprehensive income - net unrealized gain on securities available-for-sale, net of tax		35,808						35,808
Restricted stock awarded and earned compensation, net of shares forfeited (shares)			619,653
Restricted stock awarded and earned stock compensation, net of shares forfeited		6,721	$ 6	6,715
Restricted stock surrendered (shares)			(74,429)				(917,269)
Restricted stock surrendered		(2,788)				(2,788)
Common stock repurchased under Stock Repurchase Program		(9)
Common stock repurchased under Stock Repurchase Program		(34,929)		(34,920)		0
Cash dividends paid		(71,909)		(71,909)
Ending Period Balance at Jun. 30, 2019		$ 4,852,010	$ 1,219	3,435,679	1,424,341	(82,295)		73,066
Shares outstanding, ending balance (shares) at Jun. 30, 2019			119,829,104
Dividends declared per share (usd per share)		$ 0.60
Stockholders' Equity Disclosure [Rollforward]
Net earnings		$ 110,026			110,026
Other comprehensive income - net unrealized gain on securities available-for-sale, net of tax		22,821						22,821
Restricted stock awarded and earned compensation, net of shares forfeited (shares)			5,040
Restricted stock awarded and earned stock compensation, net of shares forfeited		7,305	$ 0	7,305
Restricted stock surrendered (shares)			(2,952)
Restricted stock surrendered		(102)				(102)
Cash dividends paid		(71,952)		(71,952)
Ending Period Balance at Sep. 30, 2019		$ 4,920,108	$ 1,219	$ 3,371,032	$ 1,534,367	$ (82,397)		$ 95,887
Shares outstanding, ending balance (shares) at Sep. 30, 2019			119,831,192
[1]	Impact due to adoption on January 1, 2019 of ASU 2016-02, " Leases (Topic 842)," and the related amendments.

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net earnings	$ 350,755	$ 350,298
Depreciation and amortization	28,266	25,788
Amortization of net premiums on securities available-for-sale	11,078	19,489
Amortization of intangible assets	14,573	17,520
Amortization of operating lease ROU assets	22,028	0
Provision for credit losses	19,000	33,000
(Gain) loss on sale of foreclosed assets	(406)	35
Provision for losses on foreclosed assets	54	65
Gain on sale of loans and leases	(1,091)	(4,675)
Gain on sale of premises and equipment	(34)	(13)
Gain on sale of securities	(25,261)	(7,390)
Gain on BOLI death benefit	0	(437)
Unrealized (gain) loss on derivatives and foreign currencies, net	(16)	76
Earned stock compensation	19,834	22,882
Decrease (increase) in deferred income taxes, net	14,714	(8,790)
Decrease in other assets	35,631	52,275
Decrease in accrued interest payable and other liabilities	(41,530)	(36,303)
Net cash provided by operating activities	447,595	463,820
Cash flows from investing activities:
Net increase in loans and leases	(894,624)	(446,880)
Proceeds from sales of loans and leases	102,507	646,587
Proceeds from maturities and paydowns of securities available-for-sale	238,487	231,474
Proceeds from sales of securities available-for-sale	1,554,805	500,101
Purchases of securities available-for-sale	(1,444,720)	(910,298)
Net redemptions (purchases) of Federal Home Loan Bank stock	5,238	(10,287)
Proceeds from sales of foreclosed assets	4,322	57
Proceeds from sales of premises and equipment	60	49
Proceeds from BOLI death benefit	555	1,901
Purchases of premises and equipment, net	(10,990)	(9,250)
Net increase in equipment leased to others under operating leases	(19,981)	(6,000)
Net cash used in investing activities	(464,341)	(2,546)
Cash flows from financing activities:
Net decrease in noninterest-bearing deposits	(446,400)	(671,016)
Net increase (decrease) in interest-bearing deposits	1,310,432	(312,429)
Net (decrease) increase in borrowings	(118,083)	1,045,824
Net decrease in subordinated debentures	0	(12,372)
Common stock repurchased and restricted stock surrendered	(161,928)	(313,796)
Cash dividends paid	(217,041)	(214,136)
Net cash provided by (used in) financing activities	366,980	(477,925)
Net increase (decrease) in cash, cash equivalents, and restricted cash	350,234	(16,651)
Cash, cash equivalents, and restricted cash, beginning of period	385,767	398,437
Cash, cash equivalents, and restricted cash, end of period	736,001	381,786
Supplemental disclosures of cash flow information:
Cash paid for interest	154,212	78,884
Cash paid for income taxes	89,505	62,525
Loans transferred to foreclosed assets	37	3,235
Transfers from loans held for investment to loans held for sale	$ 25,124	$ 0

Organization

Organization	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	ORGANIZATION PacWest Bancorp, a Delaware corporation, is a bank holding company registered under the BHCA, with our corporate headquarters located in Beverly Hills, California. Our principal business is to serve as the holding company for our wholly-owned subsidiary, Pacific Western Bank. References to "Pacific Western" or the "Bank" refer to Pacific Western Bank together with its wholly-owned subsidiaries. References to "we," "us," or the "Company" refer to PacWest Bancorp together with its subsidiaries on a consolidated basis. When we refer to "PacWest" or to the "holding company," we are referring to PacWest Bancorp, the parent company, on a stand-alone basis. We are focused on relationship-based business banking to small, middle-market and venture-backed businesses nationwide. The Bank offers a broad range of loan and lease and deposit products and services through 74 full-service branches located in California, one branch located in Durham, North Carolina, and numerous loan production offices across the country through its Community Banking, National Lending and Venture Banking groups. Community Banking provides real estate loans, commercial loans, and comprehensive deposit and treasury management services to small and medium-sized businesses conducted primarily through our California-based branch offices. National Lending provides asset-based, equipment, and real estate loans and treasury management services to established middle-market businesses on a national basis. Venture Banking offers a comprehensive suite of financial services focused on entrepreneurial businesses and their venture capital and private equity investors, with offices located in key innovation hubs across the United States. In addition, we provide investment advisory and asset management services to select clients through Pacific Western Asset Management Inc., a wholly-owned subsidiary of the Bank and an SEC-registered investment adviser. We generate our revenue primarily from interest received on loans and leases and, to a lesser extent, from interest received on investment securities, and fees received in connection with deposit services, extending credit and other services offered, including foreign exchange services. Our major operating expenses are interest paid by the Bank on deposits and borrowings, compensation, occupancy, and general operating expenses. We have completed 29 acquisitions from May 1, 2000 through September 30, 2019 . Our acquisitions have been accounted for using the acquisition method of accounting and, accordingly, the operating results of the acquired entities have been included in the consolidated financial statements from their respective acquisition dates. Significant Accounting Policies Our accounting policies are described in Note 1. Nature of Operations and Summary of Significant Accounting Policies , of our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2018 as filed with the Securities and Exchange Commission ("Form 10-K"). Accounting Standards Adopted in 2019 Effective January 1, 2019, the Company adopted ASU 2016-02, " Leases (Topic 842), " and the related amendments to this new standard issued in 2018. ASU 2016-02 supersedes Topic 840, “ Leases,” and is intended to increase transparency and comparability among organizations by requiring the recognition of right-of-use (“ROU”) assets and lease liabilities by lessees for those leases classified as operating leases. Under the standard, disclosures are required to meet the objective of enabling users of the financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The Company adopted the new standard using the optional transition method under ASU 2018-11, “ Leases (Topic 842): Targeted Improvements, ” and recognized a cumulative effect adjustment to increase retained earnings by $938,000 , net of taxes, without restating prior periods and applying the requirements of the new standard prospectively. The Company has elected the following practical expedients: (1) to not separate lease and non-lease components for facilities leases; (2) to not reassess whether any expired or existing contracts are or contain leases and to maintain existing lease classifications; (3) to not record short-term leases (initial term less than 12 months) on the balance sheet; and (4) to present sales tax on a net basis for those transactions in which the Company is the lessor. The standard had a more significant impact on our condensed consolidated balance sheet than on our condensed consolidated statement of earnings. The most significant impact was the recognition of ROU assets and lease liabilities for operating leases, while the accounting for leases as a lessor remained substantially unchanged. The ROU asset is included within "Other assets," while the ROU liability is included within "Accrued interest payable and other liabilities". See Note 8. Leases and Note 7. Other Assets for further details. Effective January 1, 2019, the Company early-adopted any removed or modified disclosures as permitted by ASU 2018-13, “ Fair Value Measurement (Topic 820): Disclosure Framework - Changes to Disclosure Requirements for Fair Value Measurements,” but will defer adoption of the additional disclosures until the effective date of January 1, 2020 as permitted in the transition guidance in ASU 2018-13. Effective January 1, 2019, the Company early-adopted ASU 2018-15, “ Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract (a consensus of the FASB Emerging Issues Task Force)," which aligns the requirements for capitalizing implementation costs in a cloud computing arrangement service contract with the requirements for capitalizing implementation costs incurred for an internal-use software license. The new guidance also prescribes the balance sheet, income statement, and cash flow classification of the capitalized implementation costs and related amortization expense, and requires additional quantitative and qualitative disclosures. The Company opted to apply ASU 2018-15 prospectively. The primary effect of the provisions is to capitalize eligible implementation costs during the application development phase and to amortize those costs over the life of the agreement. There was no impact to our condensed consolidated financial statements from the adoption of this new standard. Basis of Presentation Our interim condensed consolidated financial statements are prepared in accordance with U.S. GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, certain disclosures accompanying annual consolidated financial statements are omitted. In the opinion of management, all significant intercompany accounts and transactions have been eliminated and adjustments, consisting solely of normal recurring accruals and considered necessary for the fair presentation of financial statements for the interim periods, have been included. The current period's results of operations are not necessarily indicative of the results that ultimately may be achieved for the year. The interim condensed consolidated financial statements and notes thereto should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Form 10-K. Use of Estimates We have made a number of estimates and assumptions related to the reporting of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period to prepare these condensed consolidated financial statements in conformity with U.S. GAAP. Actual results could differ from those estimates. Material estimates subject to change in the near term include, among other items, the allowance for credit losses (the combination of the allowance for loan and lease losses and the reserve for unfunded loan commitments), the carrying value of intangible assets, the realization of deferred tax assets, and the fair value estimates of assets acquired and liabilities assumed in acquisitions. These estimates may be adjusted as more current information becomes available, and any adjustment may be significant. Reclassifications

Restricted Cash Balances

Restricted Cash Balances	9 Months Ended
	Sep. 30, 2019
Restricted Cash [Abstract]
Restricted Cash Balances	RESTRICTED CASH BALANCES The Company is required to maintain reserve balances with the FRBSF. Such reserve requirements are based on a percentage of deposit liabilities and may be satisfied by cash on hand. The average reserves required to be held at the FRBSF for the nine months ended September 30, 2019 and year ended December 31, 2018 were $118.2 million and $77.0 million . As of September 30, 2019 and December 31, 2018 , we pledged cash collateral for our derivative contracts of $3.2 million and $2.6 million .

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES Securities Available-for-Sale The following table presents amortized cost, gross unrealized gains and losses, and fair values of securities available-for-sale as of the dates indicated: September 30, 2019 December 31, 2018 Gross Gross Gross Gross Amortized Unrealized Unrealized Fair Amortized Unrealized Unrealized Fair Security Type Cost Gains Losses Value Cost Gains Losses Value (In thousands) Agency residential CMOs $ 1,141,332 $ 31,627 $ (404 ) $ 1,172,555 $ 634,774 $ 3,448 $ (5,372 ) $ 632,850 Agency commercial MBS 1,063,659 36,539 (181 ) 1,100,017 1,133,846 383 (21,525 ) 1,112,704 Municipal securities 675,645 46,336 — 721,981 1,298,514 21,000 (7,320 ) 1,312,194 Agency residential MBS 313,935 10,995 (1 ) 324,929 281,486 1,902 (2,300 ) 281,088 Asset-backed securities 214,153 700 (702 ) 214,151 81,762 104 (481 ) 81,385 Collateralized loan obligations 114,149 23 (298 ) 113,874 — — — — Private label residential CMOs 89,859 4,011 (2 ) 93,868 101,313 1,985 (2,093 ) 101,205 SBA securities 48,805 941 — 49,746 68,158 — (1,111 ) 67,047 Corporate debt securities 17,000 4,024 — 21,024 17,000 553 — 17,553 U.S. Treasury securities 4,984 219 — 5,203 401,056 2,437 (88 ) 403,405 Total $ 3,683,521 $ 135,415 $ (1,588 ) $ 3,817,348 $ 4,017,909 $ 31,812 $ (40,290 ) $ 4,009,431 See Note 11. Fair Value Measurements for information on fair value measurements and methodology. As of September 30, 2019 , securities available-for-sale with a fair value of $495.0 million were pledged as collateral for borrowings, public deposits, and other purposes as required by various statutes and agreements. Realized Gains and Losses on Securities Available-for-Sale During the three months ended September 30, 2019 , we sold $143.4 million of securities available-for-sale for a gross realized gain of $1.2 million and a gross realized loss of $0.3 million . During the three months ended September 30, 2018 , we sold $130.5 million of securities available-for-sale for a gross realized gain of $1.0 million and a gross realized loss of $0.1 million . During the nine months ended September 30, 2019 , we sold $1.5 billion of securities available-for-sale for a gross realized gain of $29.4 million and a gross realized loss of $4.1 million . During the nine months ended September 30, 2018 , we sold $492.7 million of securities available-for-sale for a gross realized gain of $8.1 million and a gross realized loss of $0.7 million . Unrealized Losses on Securities Available-for-Sale The following tables present the gross unrealized losses and fair values of securities available-for-sale that were in unrealized loss positions, for which other-than-temporary impairments have not been recognized in earnings, as of the dates indicated: September 30, 2019 Less Than 12 Months 12 Months or More Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized Security Type Value Losses Value Losses Value Losses (In thousands) Agency residential CMOs $ 172,738 $ (389 ) $ 2,127 $ (15 ) $ 174,865 $ (404 ) Agency commercial MBS 176,063 (181 ) — — 176,063 (181 ) Agency residential MBS — — 435 (1 ) 435 (1 ) Asset-backed securities 115,481 (702 ) — — 115,481 (702 ) Collateralized loan obligations 82,606 (298 ) — — 82,606 (298 ) Private label residential CMOs — — 121 (2 ) 121 (2 ) Total $ 546,888 $ (1,570 ) $ 2,683 $ (18 ) $ 549,571 $ (1,588 ) December 31, 2018 Less Than 12 Months 12 Months or More Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized Security Type Value Losses Value Losses Value Losses (In thousands) Agency residential CMOs $ 69,859 $ (326 ) $ 164,097 $ (5,046 ) $ 233,956 $ (5,372 ) Agency commercial MBS 40,641 (341 ) 1,020,684 (21,184 ) 1,061,325 (21,525 ) Municipal securities 52,386 (238 ) 284,915 (7,082 ) 337,301 (7,320 ) Agency residential MBS 60,164 (169 ) 85,245 (2,131 ) 145,409 (2,300 ) Asset-backed securities 11,548 (38 ) 35,859 (443 ) 47,407 (481 ) Private label residential CMOs 32,170 (831 ) 49,237 (1,262 ) 81,407 (2,093 ) SBA securities 249 (1 ) 66,798 (1,110 ) 67,047 (1,111 ) U.S. Treasury securities 49,729 (88 ) — — 49,729 (88 ) Total $ 316,746 $ (2,032 ) $ 1,706,835 $ (38,258 ) $ 2,023,581 $ (40,290 ) We reviewed the securities that were in an unrealized loss position at September 30, 2019 , and concluded their unrealized losses were a result of the level of market interest rates relative to the types of securities and pricing changes caused by shifting supply and demand dynamics and not a result of downgraded credit ratings or other indicators of deterioration of the underlying issuers' ability to repay. Accordingly, we determined the securities were temporarily impaired and we did not recognize such impairment in the condensed consolidated statements of earnings. Although we periodically sell securities for portfolio management purposes, we do not foresee having to sell any temporarily impaired securities strictly for liquidity needs and believe that it is more likely than not we would not be required to sell any temporarily impaired securities before recovery of their amortized cost. Contractual Maturities of Securities Available-for-Sale The following table presents the contractual maturities of our securities available-for-sale portfolio based on amortized cost and carrying value as of the date indicated: September 30, 2019 Amortized Fair Maturities Cost Value (In thousands) Due in one year or less $ 3,240 $ 3,248 Due after one year through five years 227,670 232,238 Due after five years through ten years 1,020,128 1,056,640 Due after ten years 2,432,483 2,525,222 Total securities available-for-sale $ 3,683,521 $ 3,817,348 Mortgage-backed securities have contractual terms to maturity, but require periodic payments to reduce principal. In addition, expected maturities may differ from contractual maturities because obligors and/or issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Interest Income on Investment Securities The following table presents the composition of our interest income on investment securities for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2019 2019 2018 2019 2018 (In thousands) Taxable interest $ 22,829 $ 20,944 $ 17,618 $ 63,515 $ 49,323 Non-taxable interest 5,565 7,547 10,127 22,705 31,510 Dividend income 412 457 316 1,214 1,096 Total interest income on investment securities $ 28,806 $ 28,948 $ 28,061 $ 87,434 $ 81,929

Loans and Leases

Loans and Leases	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Loans and Leases	LOANS AND LEASES Our loans are carried at the principal amount outstanding, net of deferred fees and costs, and in the case of acquired and purchased loans, net of purchase discounts and premiums. Deferred fees and costs and purchase discounts and premiums on acquired non-impaired loans are recognized as an adjustment to interest income over the contractual life of the loans primarily using the effective interest method or taken into income when the related loans are paid off or included in the carrying amount of loans that are sold. Loans and Leases Held for Investment The following table summarizes the composition of our loans and leases held for investment as of the dates indicated: September 30, December 31, 2019 2018 (In thousands) Real estate mortgage $ 7,908,097 $ 7,933,859 Real estate construction and land 2,581,317 2,262,710 Commercial 7,898,042 7,428,500 Consumer 408,555 401,296 Total gross loans and leases held for investment 18,796,011 18,026,365 Deferred fees, net (60,468 ) (68,652 ) Total loans and leases held for investment, net of deferred fees 18,735,543 17,957,713 Allowance for loan and lease losses (138,552 ) (132,472 ) Total loans and leases held for investment, net $ 18,596,991 $ 17,825,241 The following tables present an aging analysis of our loans and leases held for investment, net of deferred fees, by loan portfolio segment and class as of the dates indicated: September 30, 2019 30 - 89 90 or More Days Days Total Past Due Past Due Past Due Current Total (In thousands) Real estate mortgage: Commercial $ 2,867 $ 7,137 $ 10,004 $ 4,290,562 $ 4,300,566 Income producing and other residential 4,551 469 5,020 3,591,338 3,596,358 Total real estate mortgage 7,418 7,606 15,024 7,881,900 7,896,924 Real estate construction and land: Commercial — — — 1,009,362 1,009,362 Residential 2,622 — 2,622 1,539,490 1,542,112 Total real estate construction and land 2,622 — 2,622 2,548,852 2,551,474 Commercial: Asset-based 48 662 710 3,810,031 3,810,741 Venture capital — — — 2,209,649 2,209,649 Other commercial 6,742 2,241 8,983 1,849,184 1,858,167 Total commercial 6,790 2,903 9,693 7,868,864 7,878,557 Consumer 795 408 1,203 407,385 408,588 Total $ 17,625 $ 10,917 $ 28,542 $ 18,707,001 $ 18,735,543 December 31, 2018 30 - 89 90 or More Days Days Total Past Due Past Due Past Due Current Total (In thousands) Real estate mortgage: Commercial $ 3,487 $ 7,541 $ 11,028 $ 4,813,270 $ 4,824,298 Income producing and other residential 1,557 476 2,033 3,091,810 3,093,843 Total real estate mortgage 5,044 8,017 13,061 7,905,080 7,918,141 Real estate construction and land: Commercial — 442 442 912,141 912,583 Residential 1,527 — 1,527 1,319,546 1,321,073 Total real estate construction and land 1,527 442 1,969 2,231,687 2,233,656 Commercial: Asset-based 47 646 693 3,304,728 3,305,421 Venture capital 4,705 — 4,705 2,034,043 2,038,748 Other commercial 5,181 1,285 6,466 2,053,960 2,060,426 Total commercial 9,933 1,931 11,864 7,392,731 7,404,595 Consumer 581 333 914 400,407 401,321 Total $ 17,085 $ 10,723 $ 27,808 $ 17,929,905 $ 17,957,713 It is our policy to discontinue accruing interest when principal or interest payments are past due 90 days or more (unless the loan is both well secured and in the process of collection) or when, in the opinion of management, there is a reasonable doubt as to the collectability of a loan or lease in the normal course of business. Interest income on nonaccrual loans is recognized only to the extent cash is received and the principal balance of the loan is deemed collectable. The following table presents our nonaccrual and performing loans and leases held for investment, net of deferred fees, by loan portfolio segment and class as of the dates indicated: September 30, 2019 December 31, 2018 Nonaccrual Performing Total Nonaccrual Performing Total (In thousands) Real estate mortgage: Commercial $ 19,515 $ 4,281,051 $ 4,300,566 $ 15,321 $ 4,808,977 $ 4,824,298 Income producing and other residential 2,868 3,593,490 3,596,358 2,524 3,091,319 3,093,843 Total real estate mortgage 22,383 7,874,541 7,896,924 17,845 7,900,296 7,918,141 Real estate construction and land: Commercial 377 1,008,985 1,009,362 442 912,141 912,583 Residential — 1,542,112 1,542,112 — 1,321,073 1,321,073 Total real estate construction and land 377 2,551,097 2,551,474 442 2,233,214 2,233,656 Commercial: Asset-based 33,015 3,777,726 3,810,741 32,324 3,273,097 3,305,421 Venture capital 20,131 2,189,518 2,209,649 20,299 2,018,449 2,038,748 Other commercial 22,554 1,835,613 1,858,167 7,380 2,053,046 2,060,426 Total commercial 75,700 7,802,857 7,878,557 60,003 7,344,592 7,404,595 Consumer 653 407,935 408,588 1,043 400,278 401,321 Total $ 99,113 $ 18,636,430 $ 18,735,543 $ 79,333 $ 17,878,380 $ 17,957,713 At September 30, 2019 , nonaccrual loans and leases totaled $99.1 million and included $10.9 million of loans and leases 90 or more days past due, $6.3 million of loans and leases 30 to 89 days past due, and $81.9 million of loans and leases current with respect to contractual payments that were placed on nonaccrual status based on management’s judgment regarding their collectability. Nonaccrual loans and leases totaled $79.3 million at December 31, 2018 , including $10.7 million of loans and leases 90 or more days past due, $6.6 million of loans and leases 30 to 89 days past due, and $62.0 million of current loans and leases that were placed on nonaccrual status based on management’s judgment regarding their collectability. As of September 30, 2019 , our three largest loan relationships on nonaccrual status had an aggregate carrying value of $53.4 million and represented 54% of total nonaccrual loans and leases. The following tables present the credit risk rating categories for loans and leases held for investment, net of deferred fees, by loan portfolio segment and class as of the dates indicated. Classified loans and leases are those with a credit risk rating of either substandard or doubtful. September 30, 2019 Classified Special Mention Pass Total (In thousands) Real estate mortgage: Commercial $ 34,952 $ 39,309 $ 4,226,305 $ 4,300,566 Income producing and other residential 8,670 1,005 3,586,683 3,596,358 Total real estate mortgage 43,622 40,314 7,812,988 7,896,924 Real estate construction and land: Commercial 377 — 1,008,985 1,009,362 Residential — 837 1,541,275 1,542,112 Total real estate construction and land 377 837 2,550,260 2,551,474 Commercial: Asset-based 50,634 41,974 3,718,133 3,810,741 Venture capital 34,489 66,255 2,108,905 2,209,649 Other commercial 58,707 117,931 1,681,529 1,858,167 Total commercial 143,830 226,160 7,508,567 7,878,557 Consumer 778 614 407,196 408,588 Total $ 188,607 $ 267,925 $ 18,279,011 $ 18,735,543 December 31, 2018 Classified Special Mention Pass Total (In thousands) Real estate mortgage: Commercial $ 57,734 $ 74,785 $ 4,691,779 $ 4,824,298 Income producing and other residential 10,521 968 3,082,354 3,093,843 Total real estate mortgage 68,255 75,753 7,774,133 7,918,141 Real estate construction and land: Commercial 442 7,041 905,100 912,583 Residential — 1,527 1,319,546 1,321,073 Total real estate construction and land 442 8,568 2,224,646 2,233,656 Commercial: Asset-based 45,957 48,338 3,211,126 3,305,421 Venture capital 28,731 77,588 1,932,429 2,038,748 Other commercial 92,526 50,136 1,917,764 2,060,426 Total commercial 167,214 176,062 7,061,319 7,404,595 Consumer 1,199 1,015 399,107 401,321 Total $ 237,110 $ 261,398 $ 17,459,205 $ 17,957,713 Nonaccrual loans and leases and performing TDRs are considered impaired for reporting purposes. TDRs are a result of rate reductions, term extensions, fee concessions, and debt forgiveness, or a combination thereof. The following table presents the composition of our impaired loans and leases held for investment, net of deferred fees, by loan portfolio segment as of the dates indicated: September 30, 2019 December 31, 2018 Total Total Nonaccrual Impaired Nonaccrual Impaired Loans Loans Loans Loans and Performing and and Performing and Leases TDRs Leases Leases TDRs Leases (In thousands) Real estate mortgage $ 22,383 $ 10,292 $ 32,675 $ 17,845 $ 11,484 $ 29,329 Real estate construction and land 377 4,980 5,357 442 5,420 5,862 Commercial 75,700 980 76,680 60,003 692 60,695 Consumer 653 77 730 1,043 105 1,148 Total $ 99,113 $ 16,329 $ 115,442 $ 79,333 $ 17,701 $ 97,034 The following tables present information regarding our impaired loans and leases held for investment, net of deferred fees, by loan portfolio segment and class as of and for the dates indicated: September 30, 2019 December 31, 2018 Unpaid Unpaid Recorded Principal Related Recorded Principal Related Impaired Loans and Leases Investment Balance Allowance Investment Balance Allowance (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 485 $ 485 $ 71 $ 1,736 $ 1,648 $ 170 Income producing and other residential 2,032 2,030 177 2,569 2,563 247 Commercial: Asset based 500 500 500 — — — Venture capital 12,379 13,570 6,177 11,621 13,255 3,141 Other commercial 16,969 18,044 2,405 473 482 473 With No Related Allowance Recorded: Real estate mortgage: Commercial $ 22,503 $ 37,568 $ 17,783 $ 32,035 Income producing and other residential 7,655 10,058 7,241 9,425 Real estate construction and land: Commercial 5,357 5,402 5,862 5,870 Commercial: Asset-based 32,515 50,633 32,324 38,100 Venture capital 7,752 39,440 8,678 41,335 Other commercial 6,565 24,868 7,599 25,740 Consumer 730 896 1,148 1,470 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 32,675 $ 50,141 $ 248 $ 29,329 $ 45,671 $ 417 Real estate construction and land 5,357 5,402 — 5,862 5,870 — Commercial 76,680 147,055 9,082 60,695 118,912 3,614 Consumer 730 896 — 1,148 1,470 — Total $ 115,442 $ 203,494 $ 9,330 $ 97,034 $ 171,923 $ 4,031 Three Months Ended September 30, 2019 2018 Weighted Interest Weighted Interest Average Income Average Income Impaired Loans and Leases Balance (1) Recognized Balance (1) Recognized (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 485 $ 8 $ 1,781 $ 18 Income producing and other residential 2,031 15 2,494 21 Commercial: Asset-based 163 — — — Venture capital 12,343 — 28,322 — Other commercial 2,181 9 1,360 — With No Related Allowance Recorded: Real estate mortgage: Commercial $ 19,745 $ 56 $ 34,155 $ 129 Income producing and other residential 7,615 56 7,906 45 Real estate construction and land: Commercial 5,357 98 5,533 95 Residential — — — — Commercial: Asset-based 30,880 — 34,618 — Venture capital 7,752 — 1,421 — Other commercial 6,096 6 8,108 25 Consumer 568 1 383 2 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 29,876 $ 135 $ 46,336 $ 213 Real estate construction and land 5,357 98 5,533 95 Commercial 59,415 15 73,829 25 Consumer 568 1 383 2 Total $ 95,216 $ 249 $ 126,081 $ 335 _________________________ (1) For loans and leases reported as impaired at September 30, 2019 and 2018 , amounts were calculated based on the period of time such loans and leases were impaired during the reported period. Nine Months Ended September 30, 2019 2018 Weighted Interest Weighted Interest Average Income Average Income Impaired Loans and Leases Balance (1) Recognized Balance (1) Recognized (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 485 $ 24 $ 1,781 $ 55 Income producing and other residential 2,031 44 2,494 62 Commercial: Asset-based 55 — — — Venture capital 9,201 — 17,459 — Other commercial 1,125 26 688 — With No Related Allowance Recorded: Real estate mortgage: Commercial $ 16,729 $ 162 $ 32,098 $ 376 Income producing and other residential 7,488 163 7,845 132 Real estate construction and land: Commercial 5,357 290 5,533 283 Commercial: Asset-based 29,989 — 34,618 — Venture capital 6,173 — 1,330 — Other commercial 5,606 22 7,417 70 Consumer 493 4 373 6 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 26,733 $ 393 $ 44,218 $ 625 Real estate construction and land 5,357 290 5,533 283 Commercial 52,149 48 61,512 70 Consumer 493 4 373 6 Total $ 84,732 $ 735 $ 111,636 $ 984 _________________________ (1) For loans and leases reported as impaired at September 30, 2019 and 2018 , amounts were calculated based on the period of time such loans and leases were impaired during the reported period. The following table presents our troubled debt restructurings of loans held for investment by loan portfolio segment and class for the periods indicated: Three Months Ended September 30, 2019 2018 Pre- Post- Pre- Post- Modification Modification Modification Modification Number Outstanding Outstanding Number Outstanding Outstanding of Recorded Recorded of Recorded Recorded Troubled Debt Restructurings Loans Investment Investment Loans Investment Investment (Dollars in thousands) Real estate mortgage: Commercial — $ — $ — 4 $ 2,889 $ 712 Income producing and other residential 2 495 495 5 912 912 Commercial: Asset-based — — — 4 28,947 33,947 Venture capital 1 — — 5 23,501 23,501 Other commercial 3 99 99 5 1,487 1,115 Total 6 $ 594 $ 594 23 $ 57,736 $ 60,187 Nine Months Ended September 30, 2019 2018 Pre- Post- Pre- Post- Modification Modification Modification Modification Number Outstanding Outstanding Number Outstanding Outstanding of Recorded Recorded of Recorded Recorded Troubled Debt Restructurings Loans Investment Investment Loans Investment Investment (Dollars in thousands) Real estate mortgage: Commercial 1 $ 37 $ — 4 $ 2,889 $ 712 Income producing and other residential 7 1,280 1,280 8 2,616 1,557 Commercial: Asset-based 1 620 620 4 28,947 33,947 Venture capital 11 16,076 16,214 9 28,737 28,737 Other commercial 14 792 792 9 13,301 12,929 Consumer — — — 1 27 27 Total 34 $ 18,805 $ 18,906 35 $ 76,517 $ 77,909 During the three months ended September 30, 2019 , there were three other commercial loans totaling $133,000 and one income producing and other residential loan for $254,000 restructured in the preceding 12-month period that subsequently defaulted. During the nine months ended September 30, 2019 , there were two venture capital loans totaling $441,000 , three other commercial loans totaling $133,000 , and one income producing and other residential loan for $254,000 restructured in the preceding 12-month period that subsequently defaulted. During the three months ended September 30, 2018 , there were no loans restructured in the preceding 12-month period that subsequently defaulted. During the nine months ended September 30, 2018 , there were no loans restructured in the preceding 12-month period that subsequently defaulted. Leases Receivable We provide equipment financing to our customers primarily with operating and direct financing leases. For direct financing leases, lease receivables are recorded on the balance sheet but the leased equipment is not, although we generally retain legal title to the leased equipment until the end of each lease. Direct financing leases are stated at the net amount of minimum lease payments receivable, plus any unguaranteed residual value, less the amount of unearned income and net acquisition discount at the reporting date. Direct lease origination costs are amortized using the effective interest method over the life of the leases. Direct financing leases are subject to our accounting for allowance for loan and lease losses. See Note 8. Leases for information regarding operating leases where we are the lessor. The following table provides the components of leases receivable income for the period indicated: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 (In thousands) Component of leases receivable income: Interest income on net investments in leases $ 2,648 $ 8,674 The following table presents the components of leases receivable as of the date indicated: September 30, 2019 (In thousands) Net investment in direct financing leases: Lease payments receivable $ 166,692 Unguaranteed residual assets 21,315 Deferred fees and other 747 Aggregate net investment in leases $ 188,754 The following table presents maturities of leases receivable as of the date indicated: September 30, 2019 (In thousands) Period Ending December 31, 2019 $ 17,353 2020 72,465 2021 51,242 2022 19,819 2023 11,735 Thereafter 9,105 Total undiscounted cash flows 181,719 Less: Unearned income (15,027 ) Present value of lease payments $ 166,692 Allowance for Loan and Lease Losses The following tables present a summary of the activity in the allowance for loan and lease losses on loans and leases held for investment by loan portfolio segment for the periods indicated: Three Months Ended September 30, 2019 Real Estate Real Estate Construction Mortgage and Land Commercial Consumer Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 46,826 $ 26,378 $ 59,401 $ 2,432 $ 135,037 Charge-offs (120 ) — (6,021 ) (360 ) (6,501 ) Recoveries 95 — 1,898 23 2,016 Net charge-offs (25 ) — (4,123 ) (337 ) (4,485 ) (Negative provision) provision (1,655 ) 683 8,907 65 8,000 Balance, end of period $ 45,146 $ 27,061 $ 64,185 $ 2,160 $ 138,552 Nine Months Ended September 30, 2019 Real Estate Real Estate Construction Mortgage and Land Commercial Consumer Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 46,021 $ 28,209 $ 56,360 $ 1,882 $ 132,472 Charge-offs (850 ) — (25,951 ) (802 ) (27,603 ) Recoveries 478 — 11,084 121 11,683 Net charge-offs (372 ) — (14,867 ) (681 ) (15,920 ) (Negative provision) provision (503 ) (1,148 ) 22,692 959 22,000 Balance, end of period $ 45,146 $ 27,061 $ 64,185 $ 2,160 $ 138,552 Ending Allowance by Impairment Methodology: Individually evaluated for impairment $ 248 $ — $ 9,082 $ — $ 9,330 Collectively evaluated for impairment $ 44,898 $ 27,061 $ 55,103 $ 2,160 $ 129,222 Ending Loans and Leases by Impairment Methodology: Individually evaluated for impairment $ 29,808 $ 5,357 $ 75,455 $ — $ 110,620 Collectively evaluated for impairment 7,867,116 2,546,117 7,803,102 408,588 18,624,923 Ending balance $ 7,896,924 $ 2,551,474 $ 7,878,557 $ 408,588 $ 18,735,543 Three Months Ended September 30, 2018 Real Estate Real Estate Construction Mortgage and Land Commercial Consumer Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 45,467 $ 26,210 $ 58,806 $ 1,656 $ 132,139 Charge-offs (726 ) — (2,372 ) (210 ) (3,308 ) Recoveries 222 23 1,303 41 1,589 Net (charge-offs) recoveries (504 ) 23 (1,069 ) (169 ) (1,719 ) Provision (negative provision) 1,394 (47 ) 9,907 246 11,500 Balance, end of period $ 46,357 $ 26,186 $ 67,644 $ 1,733 $ 141,920 Nine Months Ended September 30, 2018 Real Estate Real Estate Construction Mortgage and Land Commercial Consumer Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period (1) $ 40,051 $ 13,055 $ 84,022 $ 2,328 $ 139,456 Charge-offs (8,071 ) — (25,321 ) (304 ) (33,696 ) Recoveries 1,999 49 7,702 136 9,886 Net (charge-offs) recoveries (6,072 ) 49 (17,619 ) (168 ) (23,810 ) Provision (negative provision) 12,378 13,082 1,241 (427 ) 26,274 Balance, end of period $ 46,357 $ 26,186 $ 67,644 $ 1,733 $ 141,920 Ending Allowance by Impairment Methodology: Individually evaluated for impairment $ 496 $ — $ 20,363 $ — $ 20,859 Collectively evaluated for impairment $ 45,861 $ 26,186 $ 47,281 $ 1,733 $ 121,061 Ending Loans and Leases by Impairment Methodology: Individually evaluated for impairment $ 44,985 $ 5,533 $ 79,493 $ — $ 130,011 Collectively evaluated for impairment 7,633,675 1,995,424 7,072,565 398,471 17,100,135 Ending balance $ 7,678,660 $ 2,000,957 $ 7,152,058 $ 398,471 $ 17,230,146 _______________________________________ (1) The allowance for loan losses related to PCI loans of $6.4 million as of December 31, 2017 is reflected in the beginning balance of the allowance for loan and lease losses for the nine months ended September 30, 2018 . Allowance for Credit Losses The allowance for credit losses is the combination of the allowance for loan and lease losses and the reserve for unfunded loan commitments. The reserve for unfunded loan commitments is included within "Accrued interest payable and other liabilities" on the condensed consolidated balance sheets. The following tables present a summary of the activity in the allowance for loan and lease losses and reserve for unfunded loan commitments for the periods indicated: Three Months Ended September 30, 2019 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period $ 135,037 $ 34,861 $ 169,898 Charge-offs (6,501 ) — (6,501 ) Recoveries 2,016 — 2,016 Net charge-offs (4,485 ) — (4,485 ) Provision (negative provision) 8,000 (1,000 ) 7,000 Balance, end of period $ 138,552 $ 33,861 $ 172,413 Nine Months Ended September 30, 2019 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period $ 132,472 $ 36,861 $ 169,333 Charge-offs (27,603 ) — (27,603 ) Recoveries 11,683 — 11,683 Net charge-offs (15,920 ) — (15,920 ) Provision (negative provision) 22,000 (3,000 ) 19,000 Balance, end of period $ 138,552 $ 33,861 $ 172,413 Three Months Ended September 30, 2018 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period $ 132,139 $ 35,361 $ 167,500 Charge-offs (3,308 ) — (3,308 ) Recoveries 1,589 — 1,589 Net charge-offs (1,719 ) — (1,719 ) Provision 11,500 — 11,500 Balance, end of period $ 141,920 $ 35,361 $ 177,281 Nine Months Ended September 30, 2018 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period (1) $ 139,456 $ 28,635 $ 168,091 Charge-offs (33,696 ) — (33,696 ) Recoveries 9,886 — 9,886 Net charge-offs (23,810 ) — (23,810 ) Provision 26,274 6,726 33,000 Balance, end of period $ 141,920 $ 35,361 $ 177,281 _______________________________________ (1) The allowance for loan losses related to PCI loans of $6.4 million as of December 31, 2017 is reflected in the beginning balance of the allowance for loan and lease losses for the nine months ended September 30, 2018

Foreclosed Assets

Foreclosed Assets	9 Months Ended
	Sep. 30, 2019
Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract]
Foreclosed Assets	FORECLOSED ASSETS The following table summarizes foreclosed assets as of the dates indicated: September 30, December 31, Property Type 2019 2018 (In thousands) Commercial real estate $ 199 $ 2,004 Single-family residence 948 953 Construction and land development 219 219 Multi‑family — 1,059 Total other real estate owned, net 1,366 4,235 Other foreclosed assets — 1,064 Total foreclosed assets, net $ 1,366 $ 5,299 The following table presents the changes in foreclosed assets, net of the valuation allowance, for the period indicated: Foreclosed Assets (In thousands) Balance, December 31, 2018 $ 5,299 Transfers to foreclosed assets from loans 37 Provision for losses (54 ) Reductions related to sales (3,916 ) Balance, September 30, 2019 $ 1,366

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill and other intangible assets arise from the acquisition method of accounting for business combinations. Goodwill and other intangible assets generated from business combinations and deemed to have indefinite lives are not subject to amortization and instead are tested for impairment at least annually. Goodwill represents the excess of the purchase price over the fair value of the net assets and other identifiable intangible assets acquired. Impairment exists when the carrying value of the goodwill exceeds its implied fair value. An impairment loss would be recognized in an amount equal to that excess as a charge to "Noninterest expense" in the condensed consolidated statements of earnings. Our other intangible assets with definite lives include CDI and CRI. CDI and CRI are amortized over their respective estimated useful lives and reviewed for impairment at least quarterly. The amortization expense represents the estimated decline in the value of the underlying deposits or customer relationships acquired. The aggregate amortization expense is expected to be $18.7 million for 2019 . The estimated aggregate amortization expense related to our current intangible assets for each of the next five years is $14.8 million for 2020 , $10.8 million for 2021 , $7.4 million for 2022 , $3.8 million for 2023 , and $1.7 million for 2024 . The following table presents the changes in CDI and CRI and the related accumulated amortization for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2019 2019 2018 2019 2018 (In thousands) Gross Amount of CDI and CRI: Balance, beginning of period $ 119,497 $ 119,497 $ 119,497 $ 119,497 $ 119,497 Fully amortized portion (1,924 ) — — (1,924 ) — Balance, end of period 117,573 119,497 119,497 117,573 119,497 Accumulated Amortization: Balance, beginning of period (72,117 ) (67,247 ) (51,804 ) (62,377 ) (39,871 ) Amortization (4,833 ) (4,870 ) (5,587 ) (14,573 ) (17,520 ) Fully amortized portion 1,924 — — 1,924 — Balance, end of period (75,026 ) (72,117 ) (57,391 ) (75,026 ) (57,391 ) Net CDI and CRI, end of period $ 42,547 $ 47,380 $ 62,106 $ 42,547 $ 62,106

Other Assets

Other Assets	9 Months Ended
	Sep. 30, 2019
Other Assets [Abstract]
Other Assets	OTHER ASSETS The following table presents the detail of our other assets as of the dates indicated: September 30, December 31, Other Assets 2019 2018 (In thousands) Cash surrender value of BOLI $ 197,887 $ 194,897 Operating lease ROU assets, net 134,122 — Interest receivable 80,955 88,754 LIHTC investments 67,367 59,507 CRA investments (1) 62,269 59,062 Prepaid expenses 18,351 18,006 Taxes receivable 17,281 39,096 Equity investments without readily determinable fair values 14,828 14,758 Equity warrants 3,532 4,793 Equity investments with readily determinable fair values 4,715 4,891 Other receivables/assets 19,752 39,132 Total other assets $ 621,059 $ 522,896 ________________________ (1) Includes equity investments without readily determinable fair values of $15.7 million and $12.5 million at September 30, 2019 and December 31, 2018 . The increase in the operating lease ROU assets in 2019 was due to the adoption of ASU 2016-02 effective January 1, 2019. See Note 8. Leases for further details. Regarding our equity investments without readily determinable fair values, there were no impairments and no upward or downward adjustments during the nine months ended September 30, 2019 . On a cumulative basis since January 1, 2018 and through September 30, 2019 , we recorded impairments of $278,000 and upward adjustments of $286,000

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	LEASES The Company adopted ASU 2016-02, " Leases (Topic 842), " effective January 1, 2019 and applied the guidance to all leases within the scope of Topic 842 as of that date. We have adopted the guidance using the optional transition method under ASU 2018-11, “ Leases (Topic 842): Targeted Improvements, ” and recognized a cumulative effect adjustment to retained earnings without prior periods restated, effectively applying the requirements of the new standard prospectively. We determine if an arrangement is a lease at inception by assessing whether there is an identified asset, and whether the contract conveys the right to control the use of the identified asset for a period of time in exchange for consideration. Topic 842 also requires a lessee to classify a lease as either finance or operating. The Company only had operating leases as of September 30, 2019 , related to our leased facilities which consisted of 75 full-service branch offices and 76 other offices. ROU assets represent a lessee's right to use an underlying asset for the lease term and lease liabilities represent a lessee's obligation to make lease payments arising from the lease. On January 1, 2019, ROU assets and operating lease liabilities were initially recognized based on the present value of future minimum lease payments over the remaining lease terms. We used our incremental borrowing rates on January 1, 2019 to determine the present value of future payments. The ROU assets also include any prepaid lease payments and initial direct costs incurred less any lease incentives received. We amortize the operating lease ROU assets and record interest expense on the operating lease liabilities over the lease terms. Our leases have remaining terms ranging from 1 to 27 years . Short-term leases (initial term of less than 12 months) are not recorded on the balance sheet and lease expense is recognized on a straight-line basis over the lease term. We have lease agreements with lease and non-lease components, which are accounted for as a single lease component. Most leases include one or more options to renew, with renewal terms that can extend the lease from one to ten years . The exercise of lease renewal options is at our sole discretion. Some of our leases also include termination options. We have determined that we do not meet the reasonably certain threshold to exercise any renewal or termination options, therefore our lease terms do not reflect any optional periods. We rent or sublease certain office space to third parties. Our subleases consist of operating leases for offices that we have fully or partially vacated. Certain of our lease agreements also include rental payments that adjust periodically based on changes in the CPI. We initially measured our lease payments using the index at the lease commencement date. Subsequent increases in the CPI are treated as variable lease payments and recognized in the period in which the obligation for those payments is incurred. The ROU assets and lease liabilities are not re-measured as a result of changes in the CPI. Our lease agreements do not contain any purchase options, residual value guarantees, or restrictive covenants. Operating Leases as a Lessee Our lease expense is a component of "Occupancy expense" on our condensed consolidated statements of earnings. The following table presents the components of lease expense for the period indicated: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 (In thousands) Operating lease expense: Fixed costs $ 8,347 $ 25,183 Variable costs 7 77 Short-term lease costs 126 849 Sublease income (1,010 ) (3,190 ) Net lease expense $ 7,470 $ 22,919 The following table presents supplemental cash flow information related to leases for the period indicated: Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 24,674 ROU assets obtained in exchange for lease obligations: Operating leases $ 172,189 The following table presents supplemental balance sheet and other information related to operating leases as of the date indicated: September 30, 2019 (Dollars in thousands) Operating leases: Operating lease right-of-use assets, net $ 134,122 Operating lease liabilities $ 149,185 Weighted average remaining lease term (in years) 4.8 Weighted average discount rate 2.79 % The following table presents maturities of operating lease liabilities as of the date indicated: September 30, 2019 (In thousands) Period ending December 31, 2019 $ 8,303 2020 32,345 2021 30,090 2022 24,304 2023 21,472 Thereafter 47,582 Total operating lease liabilities 164,096 Less: Imputed interest (14,911 ) Present value of operating lease liabilities $ 149,185 Operating Leases as a Lessor We provide equipment financing through operating leases where we facilitate the purchase of equipment leased to our customers. The equipment is on our balance sheet as "Equipment leased to others under operating leases" and is depreciated to its estimated residual value at the end of the lease term, shown as "Leased equipment depreciation" in the condensed consolidated statements of earnings, according to our fixed asset accounting policy. We receive periodic rental income payments under the leases, which are recorded as "Noninterest Income" in the condensed consolidated statements of earnings. The following table presents the rental payments to be received on operating leases as of the date indicated: September 30, 2019 (In thousands) Period Ending December 31, 2019 $ 8,727 2020 35,447 2021 31,743 2022 25,199 2023 22,096 Thereafter 52,717 Total undiscounted cash flows $ 175,929
Leases	LEASES The Company adopted ASU 2016-02, " Leases (Topic 842), " effective January 1, 2019 and applied the guidance to all leases within the scope of Topic 842 as of that date. We have adopted the guidance using the optional transition method under ASU 2018-11, “ Leases (Topic 842): Targeted Improvements, ” and recognized a cumulative effect adjustment to retained earnings without prior periods restated, effectively applying the requirements of the new standard prospectively. We determine if an arrangement is a lease at inception by assessing whether there is an identified asset, and whether the contract conveys the right to control the use of the identified asset for a period of time in exchange for consideration. Topic 842 also requires a lessee to classify a lease as either finance or operating. The Company only had operating leases as of September 30, 2019 , related to our leased facilities which consisted of 75 full-service branch offices and 76 other offices. ROU assets represent a lessee's right to use an underlying asset for the lease term and lease liabilities represent a lessee's obligation to make lease payments arising from the lease. On January 1, 2019, ROU assets and operating lease liabilities were initially recognized based on the present value of future minimum lease payments over the remaining lease terms. We used our incremental borrowing rates on January 1, 2019 to determine the present value of future payments. The ROU assets also include any prepaid lease payments and initial direct costs incurred less any lease incentives received. We amortize the operating lease ROU assets and record interest expense on the operating lease liabilities over the lease terms. Our leases have remaining terms ranging from 1 to 27 years . Short-term leases (initial term of less than 12 months) are not recorded on the balance sheet and lease expense is recognized on a straight-line basis over the lease term. We have lease agreements with lease and non-lease components, which are accounted for as a single lease component. Most leases include one or more options to renew, with renewal terms that can extend the lease from one to ten years . The exercise of lease renewal options is at our sole discretion. Some of our leases also include termination options. We have determined that we do not meet the reasonably certain threshold to exercise any renewal or termination options, therefore our lease terms do not reflect any optional periods. We rent or sublease certain office space to third parties. Our subleases consist of operating leases for offices that we have fully or partially vacated. Certain of our lease agreements also include rental payments that adjust periodically based on changes in the CPI. We initially measured our lease payments using the index at the lease commencement date. Subsequent increases in the CPI are treated as variable lease payments and recognized in the period in which the obligation for those payments is incurred. The ROU assets and lease liabilities are not re-measured as a result of changes in the CPI. Our lease agreements do not contain any purchase options, residual value guarantees, or restrictive covenants. Operating Leases as a Lessee Our lease expense is a component of "Occupancy expense" on our condensed consolidated statements of earnings. The following table presents the components of lease expense for the period indicated: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 (In thousands) Operating lease expense: Fixed costs $ 8,347 $ 25,183 Variable costs 7 77 Short-term lease costs 126 849 Sublease income (1,010 ) (3,190 ) Net lease expense $ 7,470 $ 22,919 The following table presents supplemental cash flow information related to leases for the period indicated: Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 24,674 ROU assets obtained in exchange for lease obligations: Operating leases $ 172,189 The following table presents supplemental balance sheet and other information related to operating leases as of the date indicated: September 30, 2019 (Dollars in thousands) Operating leases: Operating lease right-of-use assets, net $ 134,122 Operating lease liabilities $ 149,185 Weighted average remaining lease term (in years) 4.8 Weighted average discount rate 2.79 % The following table presents maturities of operating lease liabilities as of the date indicated: September 30, 2019 (In thousands) Period ending December 31, 2019 $ 8,303 2020 32,345 2021 30,090 2022 24,304 2023 21,472 Thereafter 47,582 Total operating lease liabilities 164,096 Less: Imputed interest (14,911 ) Present value of operating lease liabilities $ 149,185 Operating Leases as a Lessor We provide equipment financing through operating leases where we facilitate the purchase of equipment leased to our customers. The equipment is on our balance sheet as "Equipment leased to others under operating leases" and is depreciated to its estimated residual value at the end of the lease term, shown as "Leased equipment depreciation" in the condensed consolidated statements of earnings, according to our fixed asset accounting policy. We receive periodic rental income payments under the leases, which are recorded as "Noninterest Income" in the condensed consolidated statements of earnings. The following table presents the rental payments to be received on operating leases as of the date indicated: September 30, 2019 (In thousands) Period Ending December 31, 2019 $ 8,727 2020 35,447 2021 31,743 2022 25,199 2023 22,096 Thereafter 52,717 Total undiscounted cash flows $ 175,929

Borrowings and Subordinated Deb

Borrowings and Subordinated Debentures	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Borrowings and Subordinated Debentures	BORROWINGS AND SUBORDINATED DEBENTURES Borrowings The following table summarizes our borrowings as of the dates indicated: September 30, 2019 December 31, 2018 Weighted Weighted Average Average Amount Rate Amount Rate (Dollars in thousands) Non‑recourse debt $ 31 7.50 % $ 114 7.50 % FHLB secured advances 882,000 2.12 % 1,040,000 2.56 % FHLB unsecured overnight advance 141,000 1.95 % 141,000 2.53 % AFX borrowings 230,000 1.92 % 190,000 2.56 % Total borrowings $ 1,253,031 2.06 % $ 1,371,114 2.56 % The non‑recourse debt represents the payment stream of certain equipment leases sold to third parties. The debt is secured by the leased equipment and all interest rates are fixed. As of September 30, 2019 , this debt had a weighted average remaining maturity of 0.3 years. The Bank has established secured and unsecured lines of credit under which it may borrow funds from time to time on a term or overnight basis from the FHLB, the FRBSF, and other financial institutions. FHLB Secured Line of Credit. The Bank had secured financing capacity with the FHLB as of September 30, 2019 of $4.3 billion , collateralized by a blanket lien on $6.1 billion of qualifying loans. As of September 30, 2019 , the balance outstanding was $882.0 million , which consisted of a $582.0 million overnight borrowing and a $300.0 million two-month borrowing with a maturity date of October 4, 2019 . As of December 31, 2018 , the balance outstanding was a $1.0 billion overnight advance. FRBSF Secured Line of Credit. The Bank has a secured line of credit with the FRBSF. As of September 30, 2019 , the Bank had secured borrowing capacity of $2.1 billion collateralized by liens covering $2.8 billion of qualifying loans. As of September 30, 2019 and December 31, 2018 , there were no balances outstanding. FHLB Unsecured Line of Credit. The Bank has a $141.0 million unsecured line of credit with the FHLB for the purchase of overnight funds, of which $141.0 million was outstanding at September 30, 2019 . At December 31, 2018 , the balance outstanding was $141.0 million . Federal Funds Arrangements with Commercial Banks. As of September 30, 2019 , the Bank had unsecured lines of credit of $180.0 million in the aggregate with several correspondent banks for the purchase of overnight funds, subject to availability of funds. These lines are renewable annually and have no unused commitment fees. As of September 30, 2019 and December 31, 2018 , there were no balances outstanding. The Bank is a member of the AFX, through which it may either borrow or lend funds on an overnight or short-term basis with a group of pre-approved commercial banks. The availability of funds changes daily. As of September 30, 2019 , the balance outstanding was $230.0 million , which consisted of $230.0 million in overnight borrowings. As of December 31, 2018 , there were $190.0 million in overnight borrowings outstanding. Subordinated Debentures The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated: September 30, 2019 December 31, 2018 Date Maturity Rate Index Series Amount Rate Amount Rate Issued Date (Quarterly Reset) (Dollars in thousands) Trust V $ 10,310 5.24 % $ 10,310 5.89 % 8/15/2003 9/17/2033 3-month LIBOR + 3.10 Trust VI 10,310 5.17 % 10,310 5.84 % 9/3/2003 9/15/2033 3-month LIBOR + 3.05 Trust CII 5,155 5.09 % 5,155 5.74 % 9/17/2003 9/17/2033 3-month LIBOR + 2.95 Trust VII 61,856 5.02 % 61,856 5.27 % 2/5/2004 4/23/2034 3-month LIBOR + 2.75 Trust CIII 20,619 3.81 % 20,619 4.48 % 8/15/2005 9/15/2035 3-month LIBOR + 1.69 Trust FCCI 16,495 3.72 % 16,495 4.39 % 1/25/2007 3/15/2037 3-month LIBOR + 1.60 Trust FCBI 10,310 3.67 % 10,310 4.34 % 9/30/2005 12/15/2035 3-month LIBOR + 1.55 Trust CS 2005-1 82,475 4.07 % 82,475 4.74 % 11/21/2005 12/15/2035 3-month LIBOR + 1.95 Trust CS 2005-2 128,866 4.22 % 128,866 4.47 % 12/14/2005 1/30/2036 3-month LIBOR + 1.95 Trust CS 2006-1 51,545 4.22 % 51,545 4.47 % 2/22/2006 4/30/2036 3-month LIBOR + 1.95 Trust CS 2006-2 51,550 4.22 % 51,550 4.47 % 9/27/2006 10/30/2036 3-month LIBOR + 1.95 Trust CS 2006-3 (1) 28,092 1.68 % 29,556 1.73 % 9/29/2006 10/30/2036 3-month EURIBOR + 2.05 Trust CS 2006-4 16,470 4.22 % 16,470 4.47 % 12/5/2006 1/30/2037 3-month LIBOR + 1.95 Trust CS 2006-5 6,650 4.22 % 6,650 4.47 % 12/19/2006 1/30/2037 3-month LIBOR + 1.95 Trust CS 2007-2 39,177 4.22 % 39,177 4.47 % 6/13/2007 7/30/2037 3-month LIBOR + 1.95 Gross subordinated debentures 539,880 4.16 % 541,344 4.51 % Unamortized discount (2) (83,735 ) (87,498 ) Net subordinated debentures $ 456,145 $ 453,846 ___________________ (1) Denomination is in Euros with a value of €25.8 million . (2) Amount represents the fair value adjustment on trust preferred securities assumed in acquisitions.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES The following table presents a summary of commitments described below as of the dates indicated: September 30, December 31, 2019 2018 (In thousands) Loan commitments to extend credit $ 7,790,796 $ 7,528,248 Standby letters of credit 367,147 364,210 Commitments to contribute capital to low income housing project partnerships and small business investment companies 116,012 101,991 Commitments to contribute capital to private equity funds 50 50 Total $ 8,274,005 $ 7,994,499 The Company is a party to financial instruments with off‑balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Those instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the condensed consolidated balance sheets. The contract or notional amounts of those instruments reflect the extent of involvement that the Company has in particular classes of financial instruments. Commitments to extend credit are contractual agreements to lend to our customers when customers are in compliance with their contractual credit agreements and when customers have contractual availability to borrow under such agreements. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. We provide standby letters of credit in conjunction with several of our lending arrangements and property lease obligations. Most guarantees expire within one year from the date of issuance. If a borrower defaults on its commitments subject to any letter of credit issued under these arrangements, we would be required to meet the borrower's financial obligation but would seek repayment of that financial obligation from the borrower. In some cases, borrowers have pledged cash and investment securities as collateral with us under these arrangements. In addition, the Company invests in low income housing project partnerships, which provide income tax credits, and in small business investment companies that call for capital contributions up to an amount specified in the partnership agreements. As of September 30, 2019 and December 31, 2018 , we had commitments to contribute capital to these entities totaling $116.0 million and $102.0 million . We also had commitments to contribute up to an additional $50,000 to private equity funds at September 30, 2019 and December 31, 2018 . Legal Matters In the ordinary course of our business, the Company is party to various legal actions, which we believe are incidental to the operation of our business. The outcome of such legal actions and the timing of ultimate resolution are inherently difficult to predict. In the opinion of management, based upon currently available information, any resulting liability, in addition to amounts already accrued, and taking into consideration insurance which may be applicable, would not have a material adverse effect on the Company’s financial statements or operations.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS ASC Topic 820, “ Fair Value Measurement ,” defines fair value, establishes a framework for measuring fair value including a three‑level valuation hierarchy, and expands disclosures about fair value measurements. Fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date reflecting assumptions that a market participant would use when pricing an asset or liability. The hierarchy uses three levels of inputs to measure the fair value of assets and liabilities as follows: • Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets. • Level 2: Observable inputs other than Level 1, including quoted prices for similar assets and liabilities in active markets, quoted prices in less active markets, or other observable inputs that can be corroborated by observable market data, either directly or indirectly, for substantially the full term of the financial instrument. This category generally includes municipal securities, agency residential and commercial MBS, collateralized loan obligations, registered publicly rated private label CMOs, corporate debt securities, SBA securities, and asset-backed securitizations. • Level 3: Inputs to a valuation methodology that are unobservable, supported by little or no market activity, and significant to the fair value measurement. These valuation methodologies generally include pricing models, discounted cash flow models, or a determination of fair value that requires significant management judgment or estimation. This category also includes observable inputs from a pricing service not corroborated by observable market data, and includes our non-rated private label CMOs, non-rated private label asset-backed securities, and equity warrants. The Company uses fair value to measure certain assets and liabilities on a recurring basis, primarily securities available‑for‑sale and derivatives. For assets measured at the lower of cost or fair value, the fair value measurement criteria may or may not be met during a reporting period and such measurements are therefore considered “nonrecurring” for purposes of disclosing our fair value measurements. Fair value is used on a nonrecurring basis to adjust carrying values for impaired loans and other real estate owned and also to record impairment on certain assets, such as goodwill, CDI, and other long‑lived assets. The following tables present information on the assets and liabilities measured and recorded at fair value on a recurring basis as of the dates indicated: Fair Value Measurements as of September 30, 2019 Measured on a Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Securities available‑for‑sale: Agency residential CMOs $ 1,172,555 $ — $ 1,172,555 $ — Agency commercial MBS 1,100,017 — 1,100,017 — Municipal securities 721,981 — 721,981 — Agency residential MBS 324,929 — 324,929 — Asset-backed securities 214,151 — 182,783 31,368 Collateralized loan obligations 113,874 — 113,874 — Private label residential CMOs 93,868 — 87,273 6,595 SBA securities 49,746 — 49,746 — Corporate debt securities 21,024 — 21,024 — U.S. Treasury securities 5,203 5,203 — — Total securities available-for-sale 3,817,348 5,203 3,774,182 37,963 Equity warrants 3,532 — — 3,532 Other derivative assets 2,297 — 2,297 — Equity investments with readily determinable fair values 4,715 4,715 — — Total recurring assets $ 3,827,892 $ 9,918 $ 3,776,479 $ 41,495 Derivative liabilities $ 1,446 $ — $ 1,446 $ — Fair Value Measurements as of December 31, 2018 Measured on a Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Securities available‑for‑sale: Municipal securities $ 1,312,194 $ — $ 1,312,194 $ — Agency commercial MBS 1,112,704 — 1,112,704 — Agency residential CMOs 632,850 — 632,850 — U.S. Treasury securities 403,405 403,405 — — Agency residential MBS 281,088 — 281,088 — Private label residential CMOs 101,205 — 93,917 7,288 Asset-backed securities 81,385 — 41,440 39,945 SBA securities 67,047 — 67,047 — Corporate debt securities 17,553 — 17,553 — Total securities available-for-sale 4,009,431 403,405 3,558,793 47,233 Equity warrants 4,793 — — 4,793 Other derivative assets 3,292 — 3,292 — Equity investments with readily determinable fair values 4,891 4,891 — — Total recurring assets $ 4,022,407 $ 408,296 $ 3,562,085 $ 52,026 Derivative liabilities $ 142 $ — $ 142 $ — During the nine months ended September 30, 2019 , there was a $108,000 transfer from Level 3 equity warrants to Level 1 equity investments with readily determinable fair values measured on a recurring basis. The following table presents information about quantitative inputs and assumptions used to determine the fair values provided by our third party pricing service for our Level 3 private label CMOs and asset-backed securities available-for-sale measured at fair value on a recurring basis as of the date indicated: September 30, 2019 Private Label CMOs Asset-Backed Securities Weighted Input or Weighted Range Average Range Average Unobservable Inputs of Inputs Input of Inputs Input Voluntary annual prepayment speeds 2.9% - 18.2% 11.4% 12.0% - 15.0% 13.7% Annual default rates (1) 0.0% - 11.1% 1.8% 2.0% 2.0% Loss severity rates (1) 24.1% - 117.6% 58.5% 60.0% 60.0% Discount rates 2.5% - 9.2% 6.3% 3.2% - 5.2% 4.3% ____________________ (1) The annual default rates and loss severity rates were the same for all of the asset-backed securities. The following table presents information about quantitative inputs and assumptions used in the modified Black-Scholes option pricing model to determine the fair value for our Level 3 equity warrants measured at fair value on a recurring basis as of the date indicated: September 30, 2019 Equity Warrants Weighted Average Unobservable Inputs Input Volatility 17.0% Risk-free interest rate 1.6% Remaining life assumption (in years) 3.27 The following table summarizes activity for our Level 3 private label CMOs available-for-sale, asset-backed securities available-for-sale, and equity warrants measured at fair value on a recurring basis for the period indicated: Private Asset-Backed Equity Label CMOs Securities Warrants (In thousands) Balance, December 31, 2018 $ 7,288 $ 39,945 $ 4,793 Total included in earnings 340 (66 ) 7,429 Total included in other comprehensive income (160 ) 646 — Issuances — — 226 Sales and dispositions (1) — — (8,808 ) Net settlements (873 ) (9,157 ) — Transfers to Level 1 — — (108 ) Balance, September 30, 2019 $ 6,595 $ 31,368 $ 3,532 ______________________ (1) Includes the exercise of warrants that upon exercise become equity securities in public companies. These are often subject to lock-up restrictions that must be met before the equity security can be sold, during which time they are reported as equity investments with readily determinable fair values. The following tables present assets measured at fair value on a non‑recurring basis as of the dates indicated: Fair Value Measurement as of September 30, 2019 Measured on a Non‑Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Impaired loans $ 29,552 $ — $ 2,962 $ 26,590 OREO 128 — — 128 Total non-recurring $ 29,680 $ — $ 2,962 $ 26,718 Fair Value Measurement as of December 31, 2018 Measured on a Non‑Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Impaired loans $ 24,432 $ — $ 1,800 $ 22,632 OREO 1,136 — 1,136 — Total non-recurring $ 25,568 $ — $ 2,936 $ 22,632 The following table presents losses recognized on assets measured on a nonrecurring basis for the periods indicated: Three Months Ended Nine Months Ended Losses on Assets September 30, September 30, Measured on a Non‑Recurring Basis 2019 2018 2019 2018 (In thousands) Impaired loans $ 8,339 $ 14,347 $ 10,091 $ 31,351 OREO 54 — 54 65 Total losses $ 8,393 $ 14,347 $ 10,145 $ 31,416 The following table presents the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis as of the date indicated: September 30, 2019 Valuation Unobservable Weighted Asset Fair Value Technique Inputs Range Average (In thousands) Impaired loans $ 21,543 Discounted cash flows Discount rates 3.75% - 8.77% 7.58% Impaired loans 5,047 Third party appraisals No discounts OREO 128 Third party appraisals Discount (1) 31.91% 31.91% Total non-recurring Level 3 $ 26,718 ____________________ (1) Relates to one OREO property at September 30, 2019 . The following tables present carrying amounts and estimated fair values of certain financial instruments as of the dates indicated: September 30, 2019 Carrying Estimated Fair Value Amount Total Level 1 Level 2 Level 3 ( In thousands ) Financial Assets: Cash and due from banks $ 252,596 $ 252,596 $ 252,596 $ — $ — Interest‑earning deposits in financial institutions 483,405 483,405 483,405 — — Securities available‑for‑sale 3,817,348 3,817,348 5,203 3,774,182 37,963 Investment in FHLB stock 26,865 26,865 — 26,865 — Loans and leases held for investment, net 18,596,991 18,751,105 — 2,962 18,748,143 Equity warrants 3,532 3,532 — — 3,532 Other derivative assets 2,297 2,297 — 2,297 — Equity investments with readily determinable fair values 4,715 4,715 4,715 — — Financial Liabilities: Core deposits 16,471,264 16,471,264 — 16,471,264 — Non-core non-maturity deposits 479,732 479,732 — 479,732 — Time deposits 2,782,207 2,781,713 — 2,781,713 — Borrowings 1,253,031 1,253,031 953,000 300,031 — Subordinated debentures 456,145 439,895 — 439,895 — Derivative liabilities 1,446 1,446 — 1,446 — December 31, 2018 Carrying Estimated Fair Value Amount Total Level 1 Level 2 Level 3 ( In thousands ) Financial Assets: Cash and due from banks $ 175,830 $ 175,830 $ 175,830 $ — $ — Interest‑earning deposits in financial institutions 209,937 209,937 209,937 — — Securities available‑for‑sale 4,009,431 4,009,431 403,405 3,558,793 47,233 Investment in FHLB stock 32,103 32,103 — 32,103 — Loans and leases held for investment, net 17,825,241 17,013,860 — 1,800 17,012,060 Equity warrants 4,793 4,793 — — 4,793 Other derivative assets 3,292 3,292 — 3,292 — Equity investments with readily determinable fair values 4,891 4,891 4,891 — — Financial Liabilities: Core deposits 16,346,671 16,346,671 — 16,346,671 — Non-core non-maturity deposits 518,192 518,192 — 518,192 — Time deposits 2,005,638 2,017,137 — 2,017,137 — Borrowings 1,371,114 1,371,114 1,371,000 114 — Subordinated debentures 453,846 435,251 — 435,251 — Derivative liabilities 142 142 — 142 — For information regarding the valuation methodologies used to measure our assets recorded at fair value (under ASC Topic 820), and for estimating fair value for financial instruments not recorded at fair value (under ASC Topic 825, as amended by ASU 2016-01 and ASU 2018-03), see Note 1. Nature of Operations and Summary of Significant Accounting Policies, and Note 13. Fair Value Measurements, to the Consolidated Financial Statements of the Company's 2018 Annual Report on Form 10-K. Limitations Fair value estimates are made at a specific point in time and are based on relevant market information and information about the financial instrument. These estimates do not reflect income taxes or any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Because no market exists for a portion of the Company’s financial instruments, fair value estimates are based on what management believes to be reasonable judgments regarding expected future cash flows, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimated fair values are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Since the fair values have been estimated as of September 30, 2019 , the amounts that will actually be realized or paid at settlement or maturity of the instruments could be significantly different.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE The following table presents the computations of basic and diluted net earnings per share for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2019 2019 2018 2019 2018 (Dollars in thousands, except per share data) Basic Earnings Per Share: Net earnings $ 110,026 $ 128,125 $ 116,287 $ 350,755 $ 350,298 Less: Earnings allocated to unvested restricted stock (1) (1,369 ) (1,190 ) (1,428 ) (3,725 ) (3,899 ) Net earnings allocated to common shares $ 108,657 $ 126,935 $ 114,859 $ 347,030 $ 346,399 Weighted-average basic shares and unvested restricted stock outstanding 119,831 120,042 123,657 120,691 125,728 Less: Weighted-average unvested restricted stock outstanding (1,622 ) (1,462 ) (1,537 ) (1,480 ) (1,473 ) Weighted-average basic shares outstanding 118,209 118,580 122,120 119,211 124,255 Basic earnings per share $ 0.92 $ 1.07 $ 0.94 $ 2.91 $ 2.79 Diluted Earnings Per Share: Net earnings allocated to common shares $ 108,657 $ 126,935 $ 114,859 $ 347,030 $ 346,399 Weighted-average diluted shares outstanding 118,209 118,580 122,120 119,211 124,255 Diluted earnings per share $ 0.92 $ 1.07 $ 0.94 $ 2.91 $ 2.79 ________________________ (1) Represents cash dividends paid to holders of unvested restricted stock, net of forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.

Revenue From Contracts With Cus

Revenue From Contracts With Customers	9 Months Ended
	Sep. 30, 2019
Revenue From Contracts With Customers [Abstract]
Revenue from Contracts with Customers	REVENUE FROM CONTRACTS WITH CUSTOMERS Disaggregation of Revenue The following table presents interest income and noninterest income, the components of total revenue, as disclosed in the condensed consolidated statements of earnings and the related amounts which are from contracts with customers within the scope of Topic 606 for the periods indicated. As illustrated here, substantially all of our revenue is specifically excluded from the scope of Topic 606. Three Months Ended September 30, 2019 Three Months Ended September 30, 2018 Total Revenue from Total Revenue from Recorded Contracts with Recorded Contracts with Revenue Customers Revenue Customers (In thousands) Total interest income $ 307,208 $ — $ 292,642 $ — Noninterest income: Service charges on deposit accounts 3,525 3,525 3,979 3,979 Other commissions and fees 10,855 4,965 12,397 4,767 Leased equipment income 9,615 — 9,120 — Gain on sale of loans 765 — — — Gain on sale of securities 908 — 826 — Other income 7,761 428 10,590 444 Total noninterest income 33,429 8,918 36,912 9,190 Total revenue $ 340,637 $ 8,918 $ 329,554 $ 9,190 The following table presents revenue from contracts with customers based on the timing of revenue recognition for the periods indicated: Three Months Ended September 30, 2019 2018 (In thousands) Products and services transferred at a point in time $ 5,046 $ 4,604 Products and services transferred over time 3,872 4,586 Total revenue from contracts with customers $ 8,918 $ 9,190 The following table presents interest income and noninterest income, the components of total revenue, as disclosed in the condensed consolidated statements of earnings and the related amounts which are from contracts with customers within the scope of Topic 606 for the periods indicated: Nine Months Ended September 30, 2019 Nine Months Ended September 30, 2018 Total Revenue from Total Revenue from Recorded Contracts with Recorded Contracts with Revenue Customers Revenue Customers (In thousands) Total interest income $ 926,300 $ — $ 858,931 $ — Noninterest income: Service charges on deposit accounts 11,026 11,026 12,418 12,418 Other commissions and fees 33,453 14,661 34,429 14,519 Leased equipment income 28,079 — 28,497 — Gain on sale of loans 1,091 — 4,675 — Gain on sale of securities 25,261 — 7,390 — Other income 16,476 1,253 27,700 1,341 Total noninterest income 115,386 26,940 115,109 28,278 Total revenue $ 1,041,686 $ 26,940 $ 974,040 $ 28,278 The following table presents revenue from contracts with customers based on the timing of revenue recognition for the periods indicated: Nine Months Ended September 30, 2019 2018 (In thousands) Products and services transferred at a point in time $ 14,579 $ 14,195 Products and services transferred over time 12,361 14,083 Total revenue from contracts with customers $ 26,940 $ 28,278 Contract Balances The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers: September 30, 2019 December 31, 2018 (In thousands) Receivables, which are included in "Other assets" $ 1,494 $ 1,334 Contract assets, which are included in "Other assets" $ — $ — Contract liabilities, which are included in "Accrued interest payable and other liabilities" $ 523 $ 621 Contract liabilities relate to advance consideration received from customers for which revenue is recognized over the life of the contract. The change in contract liabilities for the nine months ended September 30, 2019 due to revenue recognized that was included in the contract liability balance at the beginning of the period was $98,000

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	STOCK-BASED COMPENSATION The Company’s 2017 Stock Incentive Plan, or the 2017 Plan, permits stock-based compensation awards to officers, directors, employees, and consultants. The 2017 Plan authorized grants of stock‑based compensation instruments to purchase or issue up to 4,000,000 shares of Company common stock. As of September 30, 2019 , there were 2,431,235 shares available for grant under the 2017 Plan. Though frozen for new issuances, certain awards issued under the 2003 Stock Incentive Plan, or the 2003 Plan, remain outstanding. Restricted Stock Restricted stock amortization totaled $7.3 million , $6.2 million , and $8.1 million for the three months ended September 30, 2019 , June 30, 2019 , and September 30, 2018 , and $19.3 million and $22.3 million for the nine months ended September 30, 2019 and 2018 . Such amounts are included in "Compensation expense" on the condensed consolidated statements of earnings. The amount of unrecognized compensation expense related to unvested TRSAs and PRSUs as of September 30, 2019 totaled $59.3 million . Time-Based Restricted Stock Awards At September 30, 2019 , there were 1,619,355 shares of unvested TRSAs outstanding pursuant to the Company's 2003 and 2017 Stock Incentive Plans. The TRSAs generally vest ratably over a service period of three or four years from the date of the grant or immediately upon death of an employee. Compensation expense related to TRSAs is based on the fair value of the underlying stock on the award date and is recognized over the vesting period using the straight‑line method. Performance-Based Restricted Stock Units At September 30, 2019 , there were 276,386 units of unvested PRSUs that have been granted. The PRSUs will vest only if performance goals with respect to certain financial metrics are met over a three -year performance period. The PRSUs are not considered issued and outstanding until they vest. PRSUs are granted and initially expensed based on a target number. The number of shares that will ultimately vest based on actual performance will range from zero to a maximum of either 150% or 200% of target. Compensation expense related to PRSUs is based on the fair value of the underlying stock on the award date and is amortized over the vesting period using the straight-line method unless it is determined that: (1) attainment of the financial metrics is less than probable, in which case a portion of the amortization is suspended, or (2) attainment of the financial metrics is improbable, in which case a portion of the previously recognized amortization is reversed and also suspended. If it is determined that attainment of a financial measure higher than target is probable, the amortization will increase to up to 150% or 200% of the target amortization amount. Annual PRSU expense may vary during the three

Recently Issued Accounting Stan

Recently Issued Accounting Standards	9 Months Ended
	Sep. 30, 2019
Recently Issued Accounting Standards [Abstract]
Recently Issued Accounting Standards	RECENTLY ISSUED ACCOUNTING STANDARDS Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2016-13, " Measurement of Credit Losses on Financial Instruments, " ASU 2018-19, “ Codification Improvements to Topic 326, Financial Instruments - Credit Losses,” and ASU 2019-05, " Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief " 1. This Update changes the accounting and recognition of credit losses and impairment of financial assets recorded at amortized cost. Under the CECL model, the standard requires immediate recognition of estimated credit losses expected to occur over the remaining life of the asset. The forward-looking concept of CECL requires loss estimates for the remaining estimated life of the financial assets using historical experience, current conditions and reasonable and supportable forecasts. 2. The Update modifies the other-than-temporary impairment (OTTI) model for AFS debt securities to require an allowance for credit impairment instead of a direct write-down, which allows for reversal of credit improvements in future periods. 3 . In addition, the Update eliminates the existing guidance for PCI loans, but requires an allowance for purchased financial assets with credit deterioration. 4 . Receivables arising from operating leases are not within the scope of CECL. 5. The Update must be applied using the modified retrospective method with a cumulative-effect adjustment to retained earnings as of the beginning of the year of adoption. A prospective transition approach is required for available-for-sale debt securities for which an OTTI had been recognized before the adoption date. Early adoption is permitted. January 1, 2020 1. The Company has established a multidisciplinary project team and implementation plan, selected a software solution, reached accounting decisions on various matters, developed a conceptual framework, and developed econometric regression models for the reasonable and supportable ("R&S") forecast period. 2. The Company continues to test and refine the CECL models and has completed four preliminary calculations with one more scheduled before adoption. The Company continues to perform testing and sensitivity analysis on its modeling assumptions and results. 3. Our planned approach for estimating expected life-time credit losses include the following key components for all loan portfolio segments: a. The use of a probability of default/loss given default methodology; b. A single scenario based on the consensus forecast from Moody's to develop an economic forecast for the R&S period; c. An initial R&S forecast period of four quarters for all loan portfolio segments, which reflects management's expectation of losses based on forward-looking economic scenarios over that time; d. A post-R&S reversion period of two quarters using a straight-line approach; e. A historical loss period of at least 40 quarters, which represents a full economic credit cycle; and f. Prepayments rates based on our historical experience. 4. We plan to adopt this new standard on January 1, 2020. Our latest estimate of the impact based on September 30, 2019 loan data and economic forecasts indicates that the allowance for credit losses would increase from 0% to 10% upon adoption. We have also updated our internal controls over financial reporting in preparation of adopting this new standard. 5. The current estimate and future calculations are highly dependent on loan composition, of which the vast majority is comprised of short-duration commercial loans; the macroeconomic conditions and forecasts; and other management assumptions and judgments. Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2017-04, " Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" 1. This Update simplifies goodwill impairment testing by eliminating the second step of the analysis under which the implied fair value of goodwill is determined as if the reporting unit were being acquired in a business combination. 2. The goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and an impairment charge would be recognized for any amount by which the carrying amount exceeds the reporting unit's fair value, to the extent that the loss recognized does not exceed the amount of goodwill allocated to that reporting unit. 3. The Update must be applied prospectively and early adoption is permitted. January 1, 2020 The adoption of this guidance is not expected to have a material impact on the Company’s consolidated financial position or results of operations and we plan to adopt this standard on January 1, 2020. Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2018-13, “ Fair Value Measurement (Topic 820): Disclosure Framework - Changes to Disclosure Requirements for Fair Value Measurements” 1. This Update modified the disclosure requirements in Topic 820 to add disclosures regarding changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements and the narrative description of measurement uncertainty. 2. Certain disclosure requirements in Topic 820 are also removed or modified. Certain disclosures in ASU 2018-13 would need to be applied on a retrospective basis and others on a prospective basis and early adoption is permitted. January 1, 2020 The adoption of this guidance will modify disclosures but will not have an impact on the Company’s consolidated financial position or results of operations. The Company has early adopted any removed or modified disclosures effective January 1, 2019 but will defer adoption of the additional disclosures until January 1, 2020 as permitted in the transition guidance of the standard. Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2019-04, " Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments " 1. This Update made clarifications and amendments to five topics: (i) Topic A: Codification Improvements Resulting from the June and November 2018 Credit Losses Transition Resource Group ("TRG") Meetings, (ii) Topic B: Codification Improvements to ASU 2016-13, (iii) Topic C: Codification Improvements to ASU 2017-12, " Derivatives and Hedging (Topic 815) " and Other Hedging Items, (iv) Topic D: Codification Improvements to ASU 2016-01, " Financial Instruments - Overall (Subtopic 825-10) ," and (v) Topic E: Codification Improvements Resulting from the November 2018 Credit Losses TRG Meeting. 2. In addition to conforming amendments that correct for errors and oversights, the Update in Topics A, B, and E, which impacts CECL implementation, amends or clarifies guidance for accrued interest; transfers between classifications or categories of loans and debt securities; recoveries; effect of prepayments in determining the effective interest rate; estimated costs to sell when foreclosure is probable; vintage disclosure presentation related to line-of-credit arrangements converted to term loans; contractual extensions or renewals; and others. 3. Transition requirements for the amendments are the same as ASU 2016-13 for the Update in Topics A, B, and E. The Update in Topic C may be applied retrospectively as of the date of initial adoption of ASU 2017-12 or prospectively. The Update in Topic D must be applied on a modified retrospective method with a cumulative-effect adjustment to retained earnings as of the beginning of the year of adoption and early adoption is permitted. January 1, 2020; except for Topic C - January 1, 2019 1. Impacts from the adoption of Topics A, B, and E within this Update will be considered in the Company's overall CECL implementation and we plan to adopt this Update concurrent with the adoption of ASU 2016-13. 2. The adoption of Topic D within this Update is not expected to have a material impact on the Company's consolidated financial position or results of operations and we plan to adopt this standard on January 1, 2020. 3. Topic C within this Update is not applicable to us and therefore there is no impact on the Company's consolidated financial position or results of operations.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS Common Stock Dividends On November 1, 2019 , the Company announced that the Board of Directors had declared a quarterly cash dividend of $0.60 per common share. The cash dividend is payable on November 29, 2019 to stockholders of record at the close of business on November 20, 2019 . The Company has evaluated events that have occurred subsequent to September 30, 2019 and have concluded there are no other subsequent events that would require recognition in the accompanying consolidated financial statements.

Organization Organization (Poli

Organization Organization (Policies)	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Significant Accounting Policies	Significant Accounting Policies Our accounting policies are described in Note 1. Nature of Operations and Summary of Significant Accounting Policies , of our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2018 as filed with the Securities and Exchange Commission ("Form 10-K").
Recently Issued Accounting Standards	ORGANIZATION PacWest Bancorp, a Delaware corporation, is a bank holding company registered under the BHCA, with our corporate headquarters located in Beverly Hills, California. Our principal business is to serve as the holding company for our wholly-owned subsidiary, Pacific Western Bank. References to "Pacific Western" or the "Bank" refer to Pacific Western Bank together with its wholly-owned subsidiaries. References to "we," "us," or the "Company" refer to PacWest Bancorp together with its subsidiaries on a consolidated basis. When we refer to "PacWest" or to the "holding company," we are referring to PacWest Bancorp, the parent company, on a stand-alone basis. We are focused on relationship-based business banking to small, middle-market and venture-backed businesses nationwide. The Bank offers a broad range of loan and lease and deposit products and services through 74 full-service branches located in California, one branch located in Durham, North Carolina, and numerous loan production offices across the country through its Community Banking, National Lending and Venture Banking groups. Community Banking provides real estate loans, commercial loans, and comprehensive deposit and treasury management services to small and medium-sized businesses conducted primarily through our California-based branch offices. National Lending provides asset-based, equipment, and real estate loans and treasury management services to established middle-market businesses on a national basis. Venture Banking offers a comprehensive suite of financial services focused on entrepreneurial businesses and their venture capital and private equity investors, with offices located in key innovation hubs across the United States. In addition, we provide investment advisory and asset management services to select clients through Pacific Western Asset Management Inc., a wholly-owned subsidiary of the Bank and an SEC-registered investment adviser. We generate our revenue primarily from interest received on loans and leases and, to a lesser extent, from interest received on investment securities, and fees received in connection with deposit services, extending credit and other services offered, including foreign exchange services. Our major operating expenses are interest paid by the Bank on deposits and borrowings, compensation, occupancy, and general operating expenses. We have completed 29 acquisitions from May 1, 2000 through September 30, 2019 . Our acquisitions have been accounted for using the acquisition method of accounting and, accordingly, the operating results of the acquired entities have been included in the consolidated financial statements from their respective acquisition dates. Significant Accounting Policies Our accounting policies are described in Note 1. Nature of Operations and Summary of Significant Accounting Policies , of our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2018 as filed with the Securities and Exchange Commission ("Form 10-K"). Accounting Standards Adopted in 2019 Effective January 1, 2019, the Company adopted ASU 2016-02, " Leases (Topic 842), " and the related amendments to this new standard issued in 2018. ASU 2016-02 supersedes Topic 840, “ Leases,” and is intended to increase transparency and comparability among organizations by requiring the recognition of right-of-use (“ROU”) assets and lease liabilities by lessees for those leases classified as operating leases. Under the standard, disclosures are required to meet the objective of enabling users of the financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The Company adopted the new standard using the optional transition method under ASU 2018-11, “ Leases (Topic 842): Targeted Improvements, ” and recognized a cumulative effect adjustment to increase retained earnings by $938,000 , net of taxes, without restating prior periods and applying the requirements of the new standard prospectively. The Company has elected the following practical expedients: (1) to not separate lease and non-lease components for facilities leases; (2) to not reassess whether any expired or existing contracts are or contain leases and to maintain existing lease classifications; (3) to not record short-term leases (initial term less than 12 months) on the balance sheet; and (4) to present sales tax on a net basis for those transactions in which the Company is the lessor. The standard had a more significant impact on our condensed consolidated balance sheet than on our condensed consolidated statement of earnings. The most significant impact was the recognition of ROU assets and lease liabilities for operating leases, while the accounting for leases as a lessor remained substantially unchanged. The ROU asset is included within "Other assets," while the ROU liability is included within "Accrued interest payable and other liabilities". See Note 8. Leases and Note 7. Other Assets for further details. Effective January 1, 2019, the Company early-adopted any removed or modified disclosures as permitted by ASU 2018-13, “ Fair Value Measurement (Topic 820): Disclosure Framework - Changes to Disclosure Requirements for Fair Value Measurements,” but will defer adoption of the additional disclosures until the effective date of January 1, 2020 as permitted in the transition guidance in ASU 2018-13. Effective January 1, 2019, the Company early-adopted ASU 2018-15, “ Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract (a consensus of the FASB Emerging Issues Task Force)," which aligns the requirements for capitalizing implementation costs in a cloud computing arrangement service contract with the requirements for capitalizing implementation costs incurred for an internal-use software license. The new guidance also prescribes the balance sheet, income statement, and cash flow classification of the capitalized implementation costs and related amortization expense, and requires additional quantitative and qualitative disclosures. The Company opted to apply ASU 2018-15 prospectively. The primary effect of the provisions is to capitalize eligible implementation costs during the application development phase and to amortize those costs over the life of the agreement. There was no impact to our condensed consolidated financial statements from the adoption of this new standard. Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2016-13, " Measurement of Credit Losses on Financial Instruments, " ASU 2018-19, “ Codification Improvements to Topic 326, Financial Instruments - Credit Losses,” and ASU 2019-05, " Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief " 1. This Update changes the accounting and recognition of credit losses and impairment of financial assets recorded at amortized cost. Under the CECL model, the standard requires immediate recognition of estimated credit losses expected to occur over the remaining life of the asset. The forward-looking concept of CECL requires loss estimates for the remaining estimated life of the financial assets using historical experience, current conditions and reasonable and supportable forecasts. 2. The Update modifies the other-than-temporary impairment (OTTI) model for AFS debt securities to require an allowance for credit impairment instead of a direct write-down, which allows for reversal of credit improvements in future periods. 3 . In addition, the Update eliminates the existing guidance for PCI loans, but requires an allowance for purchased financial assets with credit deterioration. 4 . Receivables arising from operating leases are not within the scope of CECL. 5. The Update must be applied using the modified retrospective method with a cumulative-effect adjustment to retained earnings as of the beginning of the year of adoption. A prospective transition approach is required for available-for-sale debt securities for which an OTTI had been recognized before the adoption date. Early adoption is permitted. January 1, 2020 1. The Company has established a multidisciplinary project team and implementation plan, selected a software solution, reached accounting decisions on various matters, developed a conceptual framework, and developed econometric regression models for the reasonable and supportable ("R&S") forecast period. 2. The Company continues to test and refine the CECL models and has completed four preliminary calculations with one more scheduled before adoption. The Company continues to perform testing and sensitivity analysis on its modeling assumptions and results. 3. Our planned approach for estimating expected life-time credit losses include the following key components for all loan portfolio segments: a. The use of a probability of default/loss given default methodology; b. A single scenario based on the consensus forecast from Moody's to develop an economic forecast for the R&S period; c. An initial R&S forecast period of four quarters for all loan portfolio segments, which reflects management's expectation of losses based on forward-looking economic scenarios over that time; d. A post-R&S reversion period of two quarters using a straight-line approach; e. A historical loss period of at least 40 quarters, which represents a full economic credit cycle; and f. Prepayments rates based on our historical experience. 4. We plan to adopt this new standard on January 1, 2020. Our latest estimate of the impact based on September 30, 2019 loan data and economic forecasts indicates that the allowance for credit losses would increase from 0% to 10% upon adoption. We have also updated our internal controls over financial reporting in preparation of adopting this new standard. 5. The current estimate and future calculations are highly dependent on loan composition, of which the vast majority is comprised of short-duration commercial loans; the macroeconomic conditions and forecasts; and other management assumptions and judgments. Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2017-04, " Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" 1. This Update simplifies goodwill impairment testing by eliminating the second step of the analysis under which the implied fair value of goodwill is determined as if the reporting unit were being acquired in a business combination. 2. The goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and an impairment charge would be recognized for any amount by which the carrying amount exceeds the reporting unit's fair value, to the extent that the loss recognized does not exceed the amount of goodwill allocated to that reporting unit. 3. The Update must be applied prospectively and early adoption is permitted. January 1, 2020 The adoption of this guidance is not expected to have a material impact on the Company’s consolidated financial position or results of operations and we plan to adopt this standard on January 1, 2020. Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2018-13, “ Fair Value Measurement (Topic 820): Disclosure Framework - Changes to Disclosure Requirements for Fair Value Measurements” 1. This Update modified the disclosure requirements in Topic 820 to add disclosures regarding changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements and the narrative description of measurement uncertainty. 2. Certain disclosure requirements in Topic 820 are also removed or modified. Certain disclosures in ASU 2018-13 would need to be applied on a retrospective basis and others on a prospective basis and early adoption is permitted. January 1, 2020 The adoption of this guidance will modify disclosures but will not have an impact on the Company’s consolidated financial position or results of operations. The Company has early adopted any removed or modified disclosures effective January 1, 2019 but will defer adoption of the additional disclosures until January 1, 2020 as permitted in the transition guidance of the standard. Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2019-04, " Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments " 1. This Update made clarifications and amendments to five topics: (i) Topic A: Codification Improvements Resulting from the June and November 2018 Credit Losses Transition Resource Group ("TRG") Meetings, (ii) Topic B: Codification Improvements to ASU 2016-13, (iii) Topic C: Codification Improvements to ASU 2017-12, " Derivatives and Hedging (Topic 815) " and Other Hedging Items, (iv) Topic D: Codification Improvements to ASU 2016-01, " Financial Instruments - Overall (Subtopic 825-10) ," and (v) Topic E: Codification Improvements Resulting from the November 2018 Credit Losses TRG Meeting. 2. In addition to conforming amendments that correct for errors and oversights, the Update in Topics A, B, and E, which impacts CECL implementation, amends or clarifies guidance for accrued interest; transfers between classifications or categories of loans and debt securities; recoveries; effect of prepayments in determining the effective interest rate; estimated costs to sell when foreclosure is probable; vintage disclosure presentation related to line-of-credit arrangements converted to term loans; contractual extensions or renewals; and others. 3. Transition requirements for the amendments are the same as ASU 2016-13 for the Update in Topics A, B, and E. The Update in Topic C may be applied retrospectively as of the date of initial adoption of ASU 2017-12 or prospectively. The Update in Topic D must be applied on a modified retrospective method with a cumulative-effect adjustment to retained earnings as of the beginning of the year of adoption and early adoption is permitted. January 1, 2020; except for Topic C - January 1, 2019 1. Impacts from the adoption of Topics A, B, and E within this Update will be considered in the Company's overall CECL implementation and we plan to adopt this Update concurrent with the adoption of ASU 2016-13. 2. The adoption of Topic D within this Update is not expected to have a material impact on the Company's consolidated financial position or results of operations and we plan to adopt this standard on January 1, 2020. 3. Topic C within this Update is not applicable to us and therefore there is no impact on the Company's consolidated financial position or results of operations.
Basis of Presentation	Basis of Presentation Our interim condensed consolidated financial statements are prepared in accordance with U.S. GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, certain disclosures accompanying annual consolidated financial statements are omitted. In the opinion of management, all significant intercompany accounts and transactions have been eliminated and adjustments, consisting solely of normal recurring accruals and considered necessary for the fair presentation of financial statements for the interim periods, have been included. The current period's results of operations are not necessarily indicative of the results that ultimately may be achieved for the year. The interim condensed consolidated financial statements and notes thereto should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Form 10-K.
Use of Estimates	Use of Estimates We have made a number of estimates and assumptions related to the reporting of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period to prepare these condensed consolidated financial statements in conformity with U.S. GAAP. Actual results could differ from those estimates. Material estimates subject to change in the near term include, among other items, the allowance for credit losses (the combination of the allowance for loan and lease losses and the reserve for unfunded loan commitments), the carrying value of intangible assets, the realization of deferred tax assets, and the fair value estimates of assets acquired and liabilities assumed in acquisitions. These estimates may be adjusted as more current information becomes available, and any adjustment may be significant.
Reclassifications	Reclassifications None.

Fair Value Disclosures (Policie

Fair Value Disclosures (Policies)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurement, Policy	FAIR VALUE MEASUREMENTS ASC Topic 820, “ Fair Value Measurement ,” defines fair value, establishes a framework for measuring fair value including a three‑level valuation hierarchy, and expands disclosures about fair value measurements. Fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date reflecting assumptions that a market participant would use when pricing an asset or liability. The hierarchy uses three levels of inputs to measure the fair value of assets and liabilities as follows: • Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets. • Level 2: Observable inputs other than Level 1, including quoted prices for similar assets and liabilities in active markets, quoted prices in less active markets, or other observable inputs that can be corroborated by observable market data, either directly or indirectly, for substantially the full term of the financial instrument. This category generally includes municipal securities, agency residential and commercial MBS, collateralized loan obligations, registered publicly rated private label CMOs, corporate debt securities, SBA securities, and asset-backed securitizations. • Level 3: Inputs to a valuation methodology that are unobservable, supported by little or no market activity, and significant to the fair value measurement. These valuation methodologies generally include pricing models, discounted cash flow models, or a determination of fair value that requires significant management judgment or estimation. This category also includes observable inputs from a pricing service not corroborated by observable market data, and includes our non-rated private label CMOs, non-rated private label asset-backed securities, and equity warrants. The Company uses fair value to measure certain assets and liabilities on a recurring basis, primarily securities available‑for‑sale and derivatives. For assets measured at the lower of cost or fair value, the fair value measurement criteria may or may not be met during a reporting period and such measurements are therefore considered “nonrecurring” for purposes of disclosing our fair value measurements. Fair value is used on a nonrecurring basis to adjust carrying values for impaired loans and other real estate owned and also to record impairment on certain assets, such as goodwill, CDI, and other long‑lived assets.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Schedule of available-for-sale securities reconciliation	The following table presents amortized cost, gross unrealized gains and losses, and fair values of securities available-for-sale as of the dates indicated: September 30, 2019 December 31, 2018 Gross Gross Gross Gross Amortized Unrealized Unrealized Fair Amortized Unrealized Unrealized Fair Security Type Cost Gains Losses Value Cost Gains Losses Value (In thousands) Agency residential CMOs $ 1,141,332 $ 31,627 $ (404 ) $ 1,172,555 $ 634,774 $ 3,448 $ (5,372 ) $ 632,850 Agency commercial MBS 1,063,659 36,539 (181 ) 1,100,017 1,133,846 383 (21,525 ) 1,112,704 Municipal securities 675,645 46,336 — 721,981 1,298,514 21,000 (7,320 ) 1,312,194 Agency residential MBS 313,935 10,995 (1 ) 324,929 281,486 1,902 (2,300 ) 281,088 Asset-backed securities 214,153 700 (702 ) 214,151 81,762 104 (481 ) 81,385 Collateralized loan obligations 114,149 23 (298 ) 113,874 — — — — Private label residential CMOs 89,859 4,011 (2 ) 93,868 101,313 1,985 (2,093 ) 101,205 SBA securities 48,805 941 — 49,746 68,158 — (1,111 ) 67,047 Corporate debt securities 17,000 4,024 — 21,024 17,000 553 — 17,553 U.S. Treasury securities 4,984 219 — 5,203 401,056 2,437 (88 ) 403,405 Total $ 3,683,521 $ 135,415 $ (1,588 ) $ 3,817,348 $ 4,017,909 $ 31,812 $ (40,290 ) $ 4,009,431 See Note 11. Fair Value Measurements for information on fair value measurements and methodology.
Unrealized losses on investment securities	The following tables present the gross unrealized losses and fair values of securities available-for-sale that were in unrealized loss positions, for which other-than-temporary impairments have not been recognized in earnings, as of the dates indicated: September 30, 2019 Less Than 12 Months 12 Months or More Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized Security Type Value Losses Value Losses Value Losses (In thousands) Agency residential CMOs $ 172,738 $ (389 ) $ 2,127 $ (15 ) $ 174,865 $ (404 ) Agency commercial MBS 176,063 (181 ) — — 176,063 (181 ) Agency residential MBS — — 435 (1 ) 435 (1 ) Asset-backed securities 115,481 (702 ) — — 115,481 (702 ) Collateralized loan obligations 82,606 (298 ) — — 82,606 (298 ) Private label residential CMOs — — 121 (2 ) 121 (2 ) Total $ 546,888 $ (1,570 ) $ 2,683 $ (18 ) $ 549,571 $ (1,588 ) December 31, 2018 Less Than 12 Months 12 Months or More Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized Security Type Value Losses Value Losses Value Losses (In thousands) Agency residential CMOs $ 69,859 $ (326 ) $ 164,097 $ (5,046 ) $ 233,956 $ (5,372 ) Agency commercial MBS 40,641 (341 ) 1,020,684 (21,184 ) 1,061,325 (21,525 ) Municipal securities 52,386 (238 ) 284,915 (7,082 ) 337,301 (7,320 ) Agency residential MBS 60,164 (169 ) 85,245 (2,131 ) 145,409 (2,300 ) Asset-backed securities 11,548 (38 ) 35,859 (443 ) 47,407 (481 ) Private label residential CMOs 32,170 (831 ) 49,237 (1,262 ) 81,407 (2,093 ) SBA securities 249 (1 ) 66,798 (1,110 ) 67,047 (1,111 ) U.S. Treasury securities 49,729 (88 ) — — 49,729 (88 ) Total $ 316,746 $ (2,032 ) $ 1,706,835 $ (38,258 ) $ 2,023,581 $ (40,290 )
Investments classified by contractual maturity date	The following table presents the contractual maturities of our securities available-for-sale portfolio based on amortized cost and carrying value as of the date indicated: September 30, 2019 Amortized Fair Maturities Cost Value (In thousands) Due in one year or less $ 3,240 $ 3,248 Due after one year through five years 227,670 232,238 Due after five years through ten years 1,020,128 1,056,640 Due after ten years 2,432,483 2,525,222 Total securities available-for-sale $ 3,683,521 $ 3,817,348
Investment income	The following table presents the composition of our interest income on investment securities for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2019 2019 2018 2019 2018 (In thousands) Taxable interest $ 22,829 $ 20,944 $ 17,618 $ 63,515 $ 49,323 Non-taxable interest 5,565 7,547 10,127 22,705 31,510 Dividend income 412 457 316 1,214 1,096 Total interest income on investment securities $ 28,806 $ 28,948 $ 28,061 $ 87,434 $ 81,929

Loans and Leases (Tables)

Loans and Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Schedule of composition of loans portfolio	The following table summarizes the composition of our loans and leases held for investment as of the dates indicated: September 30, December 31, 2019 2018 (In thousands) Real estate mortgage $ 7,908,097 $ 7,933,859 Real estate construction and land 2,581,317 2,262,710 Commercial 7,898,042 7,428,500 Consumer 408,555 401,296 Total gross loans and leases held for investment 18,796,011 18,026,365 Deferred fees, net (60,468 ) (68,652 ) Total loans and leases held for investment, net of deferred fees 18,735,543 17,957,713 Allowance for loan and lease losses (138,552 ) (132,472 ) Total loans and leases held for investment, net $ 18,596,991 $ 17,825,241
Delinquent loans in loan portfolio	The following tables present an aging analysis of our loans and leases held for investment, net of deferred fees, by loan portfolio segment and class as of the dates indicated: September 30, 2019 30 - 89 90 or More Days Days Total Past Due Past Due Past Due Current Total (In thousands) Real estate mortgage: Commercial $ 2,867 $ 7,137 $ 10,004 $ 4,290,562 $ 4,300,566 Income producing and other residential 4,551 469 5,020 3,591,338 3,596,358 Total real estate mortgage 7,418 7,606 15,024 7,881,900 7,896,924 Real estate construction and land: Commercial — — — 1,009,362 1,009,362 Residential 2,622 — 2,622 1,539,490 1,542,112 Total real estate construction and land 2,622 — 2,622 2,548,852 2,551,474 Commercial: Asset-based 48 662 710 3,810,031 3,810,741 Venture capital — — — 2,209,649 2,209,649 Other commercial 6,742 2,241 8,983 1,849,184 1,858,167 Total commercial 6,790 2,903 9,693 7,868,864 7,878,557 Consumer 795 408 1,203 407,385 408,588 Total $ 17,625 $ 10,917 $ 28,542 $ 18,707,001 $ 18,735,543 December 31, 2018 30 - 89 90 or More Days Days Total Past Due Past Due Past Due Current Total (In thousands) Real estate mortgage: Commercial $ 3,487 $ 7,541 $ 11,028 $ 4,813,270 $ 4,824,298 Income producing and other residential 1,557 476 2,033 3,091,810 3,093,843 Total real estate mortgage 5,044 8,017 13,061 7,905,080 7,918,141 Real estate construction and land: Commercial — 442 442 912,141 912,583 Residential 1,527 — 1,527 1,319,546 1,321,073 Total real estate construction and land 1,527 442 1,969 2,231,687 2,233,656 Commercial: Asset-based 47 646 693 3,304,728 3,305,421 Venture capital 4,705 — 4,705 2,034,043 2,038,748 Other commercial 5,181 1,285 6,466 2,053,960 2,060,426 Total commercial 9,933 1,931 11,864 7,392,731 7,404,595 Consumer 581 333 914 400,407 401,321 Total $ 17,085 $ 10,723 $ 27,808 $ 17,929,905 $ 17,957,713
Schedule of non accrual and performing restructured impaired financing receivables	The following table presents our nonaccrual and performing loans and leases held for investment, net of deferred fees, by loan portfolio segment and class as of the dates indicated: September 30, 2019 December 31, 2018 Nonaccrual Performing Total Nonaccrual Performing Total (In thousands) Real estate mortgage: Commercial $ 19,515 $ 4,281,051 $ 4,300,566 $ 15,321 $ 4,808,977 $ 4,824,298 Income producing and other residential 2,868 3,593,490 3,596,358 2,524 3,091,319 3,093,843 Total real estate mortgage 22,383 7,874,541 7,896,924 17,845 7,900,296 7,918,141 Real estate construction and land: Commercial 377 1,008,985 1,009,362 442 912,141 912,583 Residential — 1,542,112 1,542,112 — 1,321,073 1,321,073 Total real estate construction and land 377 2,551,097 2,551,474 442 2,233,214 2,233,656 Commercial: Asset-based 33,015 3,777,726 3,810,741 32,324 3,273,097 3,305,421 Venture capital 20,131 2,189,518 2,209,649 20,299 2,018,449 2,038,748 Other commercial 22,554 1,835,613 1,858,167 7,380 2,053,046 2,060,426 Total commercial 75,700 7,802,857 7,878,557 60,003 7,344,592 7,404,595 Consumer 653 407,935 408,588 1,043 400,278 401,321 Total $ 99,113 $ 18,636,430 $ 18,735,543 $ 79,333 $ 17,878,380 $ 17,957,713 The following table presents the composition of our impaired loans and leases held for investment, net of deferred fees, by loan portfolio segment as of the dates indicated: September 30, 2019 December 31, 2018 Total Total Nonaccrual Impaired Nonaccrual Impaired Loans Loans Loans Loans and Performing and and Performing and Leases TDRs Leases Leases TDRs Leases (In thousands) Real estate mortgage $ 22,383 $ 10,292 $ 32,675 $ 17,845 $ 11,484 $ 29,329 Real estate construction and land 377 4,980 5,357 442 5,420 5,862 Commercial 75,700 980 76,680 60,003 692 60,695 Consumer 653 77 730 1,043 105 1,148 Total $ 99,113 $ 16,329 $ 115,442 $ 79,333 $ 17,701 $ 97,034
CV of loans held for investment by class by performing and nonperforming	The following tables present the credit risk rating categories for loans and leases held for investment, net of deferred fees, by loan portfolio segment and class as of the dates indicated. Classified loans and leases are those with a credit risk rating of either substandard or doubtful. September 30, 2019 Classified Special Mention Pass Total (In thousands) Real estate mortgage: Commercial $ 34,952 $ 39,309 $ 4,226,305 $ 4,300,566 Income producing and other residential 8,670 1,005 3,586,683 3,596,358 Total real estate mortgage 43,622 40,314 7,812,988 7,896,924 Real estate construction and land: Commercial 377 — 1,008,985 1,009,362 Residential — 837 1,541,275 1,542,112 Total real estate construction and land 377 837 2,550,260 2,551,474 Commercial: Asset-based 50,634 41,974 3,718,133 3,810,741 Venture capital 34,489 66,255 2,108,905 2,209,649 Other commercial 58,707 117,931 1,681,529 1,858,167 Total commercial 143,830 226,160 7,508,567 7,878,557 Consumer 778 614 407,196 408,588 Total $ 188,607 $ 267,925 $ 18,279,011 $ 18,735,543 December 31, 2018 Classified Special Mention Pass Total (In thousands) Real estate mortgage: Commercial $ 57,734 $ 74,785 $ 4,691,779 $ 4,824,298 Income producing and other residential 10,521 968 3,082,354 3,093,843 Total real estate mortgage 68,255 75,753 7,774,133 7,918,141 Real estate construction and land: Commercial 442 7,041 905,100 912,583 Residential — 1,527 1,319,546 1,321,073 Total real estate construction and land 442 8,568 2,224,646 2,233,656 Commercial: Asset-based 45,957 48,338 3,211,126 3,305,421 Venture capital 28,731 77,588 1,932,429 2,038,748 Other commercial 92,526 50,136 1,917,764 2,060,426 Total commercial 167,214 176,062 7,061,319 7,404,595 Consumer 1,199 1,015 399,107 401,321 Total $ 237,110 $ 261,398 $ 17,459,205 $ 17,957,713
Impaired financing receivables, average balances and interest income recognized	The following tables present information regarding our impaired loans and leases held for investment, net of deferred fees, by loan portfolio segment and class as of and for the dates indicated: September 30, 2019 December 31, 2018 Unpaid Unpaid Recorded Principal Related Recorded Principal Related Impaired Loans and Leases Investment Balance Allowance Investment Balance Allowance (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 485 $ 485 $ 71 $ 1,736 $ 1,648 $ 170 Income producing and other residential 2,032 2,030 177 2,569 2,563 247 Commercial: Asset based 500 500 500 — — — Venture capital 12,379 13,570 6,177 11,621 13,255 3,141 Other commercial 16,969 18,044 2,405 473 482 473 With No Related Allowance Recorded: Real estate mortgage: Commercial $ 22,503 $ 37,568 $ 17,783 $ 32,035 Income producing and other residential 7,655 10,058 7,241 9,425 Real estate construction and land: Commercial 5,357 5,402 5,862 5,870 Commercial: Asset-based 32,515 50,633 32,324 38,100 Venture capital 7,752 39,440 8,678 41,335 Other commercial 6,565 24,868 7,599 25,740 Consumer 730 896 1,148 1,470 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 32,675 $ 50,141 $ 248 $ 29,329 $ 45,671 $ 417 Real estate construction and land 5,357 5,402 — 5,862 5,870 — Commercial 76,680 147,055 9,082 60,695 118,912 3,614 Consumer 730 896 — 1,148 1,470 — Total $ 115,442 $ 203,494 $ 9,330 $ 97,034 $ 171,923 $ 4,031 Three Months Ended September 30, 2019 2018 Weighted Interest Weighted Interest Average Income Average Income Impaired Loans and Leases Balance (1) Recognized Balance (1) Recognized (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 485 $ 8 $ 1,781 $ 18 Income producing and other residential 2,031 15 2,494 21 Commercial: Asset-based 163 — — — Venture capital 12,343 — 28,322 — Other commercial 2,181 9 1,360 — With No Related Allowance Recorded: Real estate mortgage: Commercial $ 19,745 $ 56 $ 34,155 $ 129 Income producing and other residential 7,615 56 7,906 45 Real estate construction and land: Commercial 5,357 98 5,533 95 Residential — — — — Commercial: Asset-based 30,880 — 34,618 — Venture capital 7,752 — 1,421 — Other commercial 6,096 6 8,108 25 Consumer 568 1 383 2 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 29,876 $ 135 $ 46,336 $ 213 Real estate construction and land 5,357 98 5,533 95 Commercial 59,415 15 73,829 25 Consumer 568 1 383 2 Total $ 95,216 $ 249 $ 126,081 $ 335 _________________________ (1) For loans and leases reported as impaired at September 30, 2019 and 2018 , amounts were calculated based on the period of time such loans and leases were impaired during the reported period. Nine Months Ended September 30, 2019 2018 Weighted Interest Weighted Interest Average Income Average Income Impaired Loans and Leases Balance (1) Recognized Balance (1) Recognized (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 485 $ 24 $ 1,781 $ 55 Income producing and other residential 2,031 44 2,494 62 Commercial: Asset-based 55 — — — Venture capital 9,201 — 17,459 — Other commercial 1,125 26 688 — With No Related Allowance Recorded: Real estate mortgage: Commercial $ 16,729 $ 162 $ 32,098 $ 376 Income producing and other residential 7,488 163 7,845 132 Real estate construction and land: Commercial 5,357 290 5,533 283 Commercial: Asset-based 29,989 — 34,618 — Venture capital 6,173 — 1,330 — Other commercial 5,606 22 7,417 70 Consumer 493 4 373 6 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 26,733 $ 393 $ 44,218 $ 625 Real estate construction and land 5,357 290 5,533 283 Commercial 52,149 48 61,512 70 Consumer 493 4 373 6 Total $ 84,732 $ 735 $ 111,636 $ 984 _________________________ (1) For loans and leases reported as impaired at September 30, 2019 and 2018 , amounts were calculated based on the period of time such loans and leases were impaired during the reported period.
Troubled debt restructurings on financing receivables	The following table presents our troubled debt restructurings of loans held for investment by loan portfolio segment and class for the periods indicated: Three Months Ended September 30, 2019 2018 Pre- Post- Pre- Post- Modification Modification Modification Modification Number Outstanding Outstanding Number Outstanding Outstanding of Recorded Recorded of Recorded Recorded Troubled Debt Restructurings Loans Investment Investment Loans Investment Investment (Dollars in thousands) Real estate mortgage: Commercial — $ — $ — 4 $ 2,889 $ 712 Income producing and other residential 2 495 495 5 912 912 Commercial: Asset-based — — — 4 28,947 33,947 Venture capital 1 — — 5 23,501 23,501 Other commercial 3 99 99 5 1,487 1,115 Total 6 $ 594 $ 594 23 $ 57,736 $ 60,187 Nine Months Ended September 30, 2019 2018 Pre- Post- Pre- Post- Modification Modification Modification Modification Number Outstanding Outstanding Number Outstanding Outstanding of Recorded Recorded of Recorded Recorded Troubled Debt Restructurings Loans Investment Investment Loans Investment Investment (Dollars in thousands) Real estate mortgage: Commercial 1 $ 37 $ — 4 $ 2,889 $ 712 Income producing and other residential 7 1,280 1,280 8 2,616 1,557 Commercial: Asset-based 1 620 620 4 28,947 33,947 Venture capital 11 16,076 16,214 9 28,737 28,737 Other commercial 14 792 792 9 13,301 12,929 Consumer — — — 1 27 27 Total 34 $ 18,805 $ 18,906 35 $ 76,517 $ 77,909
Allowance for credit losses on financing receivables	The following tables present a summary of the activity in the allowance for loan and lease losses and reserve for unfunded loan commitments for the periods indicated: Three Months Ended September 30, 2019 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period $ 135,037 $ 34,861 $ 169,898 Charge-offs (6,501 ) — (6,501 ) Recoveries 2,016 — 2,016 Net charge-offs (4,485 ) — (4,485 ) Provision (negative provision) 8,000 (1,000 ) 7,000 Balance, end of period $ 138,552 $ 33,861 $ 172,413 Nine Months Ended September 30, 2019 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period $ 132,472 $ 36,861 $ 169,333 Charge-offs (27,603 ) — (27,603 ) Recoveries 11,683 — 11,683 Net charge-offs (15,920 ) — (15,920 ) Provision (negative provision) 22,000 (3,000 ) 19,000 Balance, end of period $ 138,552 $ 33,861 $ 172,413 Three Months Ended September 30, 2018 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period $ 132,139 $ 35,361 $ 167,500 Charge-offs (3,308 ) — (3,308 ) Recoveries 1,589 — 1,589 Net charge-offs (1,719 ) — (1,719 ) Provision 11,500 — 11,500 Balance, end of period $ 141,920 $ 35,361 $ 177,281 Nine Months Ended September 30, 2018 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period (1) $ 139,456 $ 28,635 $ 168,091 Charge-offs (33,696 ) — (33,696 ) Recoveries 9,886 — 9,886 Net charge-offs (23,810 ) — (23,810 ) Provision 26,274 6,726 33,000 Balance, end of period $ 141,920 $ 35,361 $ 177,281 _______________________________________ (1) The allowance for loan losses related to PCI loans of $6.4 million as of December 31, 2017 is reflected in the beginning balance of the allowance for loan and lease losses for the nine months ended September 30, 2018 The following tables present a summary of the activity in the allowance for loan and lease losses on loans and leases held for investment by loan portfolio segment for the periods indicated: Three Months Ended September 30, 2019 Real Estate Real Estate Construction Mortgage and Land Commercial Consumer Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 46,826 $ 26,378 $ 59,401 $ 2,432 $ 135,037 Charge-offs (120 ) — (6,021 ) (360 ) (6,501 ) Recoveries 95 — 1,898 23 2,016 Net charge-offs (25 ) — (4,123 ) (337 ) (4,485 ) (Negative provision) provision (1,655 ) 683 8,907 65 8,000 Balance, end of period $ 45,146 $ 27,061 $ 64,185 $ 2,160 $ 138,552 Nine Months Ended September 30, 2019 Real Estate Real Estate Construction Mortgage and Land Commercial Consumer Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 46,021 $ 28,209 $ 56,360 $ 1,882 $ 132,472 Charge-offs (850 ) — (25,951 ) (802 ) (27,603 ) Recoveries 478 — 11,084 121 11,683 Net charge-offs (372 ) — (14,867 ) (681 ) (15,920 ) (Negative provision) provision (503 ) (1,148 ) 22,692 959 22,000 Balance, end of period $ 45,146 $ 27,061 $ 64,185 $ 2,160 $ 138,552 Ending Allowance by Impairment Methodology: Individually evaluated for impairment $ 248 $ — $ 9,082 $ — $ 9,330 Collectively evaluated for impairment $ 44,898 $ 27,061 $ 55,103 $ 2,160 $ 129,222 Ending Loans and Leases by Impairment Methodology: Individually evaluated for impairment $ 29,808 $ 5,357 $ 75,455 $ — $ 110,620 Collectively evaluated for impairment 7,867,116 2,546,117 7,803,102 408,588 18,624,923 Ending balance $ 7,896,924 $ 2,551,474 $ 7,878,557 $ 408,588 $ 18,735,543 Three Months Ended September 30, 2018 Real Estate Real Estate Construction Mortgage and Land Commercial Consumer Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 45,467 $ 26,210 $ 58,806 $ 1,656 $ 132,139 Charge-offs (726 ) — (2,372 ) (210 ) (3,308 ) Recoveries 222 23 1,303 41 1,589 Net (charge-offs) recoveries (504 ) 23 (1,069 ) (169 ) (1,719 ) Provision (negative provision) 1,394 (47 ) 9,907 246 11,500 Balance, end of period $ 46,357 $ 26,186 $ 67,644 $ 1,733 $ 141,920 Nine Months Ended September 30, 2018 Real Estate Real Estate Construction Mortgage and Land Commercial Consumer Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period (1) $ 40,051 $ 13,055 $ 84,022 $ 2,328 $ 139,456 Charge-offs (8,071 ) — (25,321 ) (304 ) (33,696 ) Recoveries 1,999 49 7,702 136 9,886 Net (charge-offs) recoveries (6,072 ) 49 (17,619 ) (168 ) (23,810 ) Provision (negative provision) 12,378 13,082 1,241 (427 ) 26,274 Balance, end of period $ 46,357 $ 26,186 $ 67,644 $ 1,733 $ 141,920 Ending Allowance by Impairment Methodology: Individually evaluated for impairment $ 496 $ — $ 20,363 $ — $ 20,859 Collectively evaluated for impairment $ 45,861 $ 26,186 $ 47,281 $ 1,733 $ 121,061 Ending Loans and Leases by Impairment Methodology: Individually evaluated for impairment $ 44,985 $ 5,533 $ 79,493 $ — $ 130,011 Collectively evaluated for impairment 7,633,675 1,995,424 7,072,565 398,471 17,100,135 Ending balance $ 7,678,660 $ 2,000,957 $ 7,152,058 $ 398,471 $ 17,230,146 _______________________________________ (1) The allowance for loan losses related to PCI loans of $6.4 million as of December 31, 2017 is reflected in the beginning balance of the allowance for loan and lease losses for the nine months ended September 30, 2018 .
Lease Income of Direct Financing Leases	The following table provides the components of leases receivable income for the period indicated: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 (In thousands) Component of leases receivable income: Interest income on net investments in leases $ 2,648 $ 8,674
Assets and Liabilities, Lessor	The following table presents the components of leases receivable as of the date indicated: September 30, 2019 (In thousands) Net investment in direct financing leases: Lease payments receivable $ 166,692 Unguaranteed residual assets 21,315 Deferred fees and other 747 Aggregate net investment in leases $ 188,754
Sales-type and Direct Financing Leases, Lease Receivable, Maturity	The following table presents maturities of leases receivable as of the date indicated: September 30, 2019 (In thousands) Period Ending December 31, 2019 $ 17,353 2020 72,465 2021 51,242 2022 19,819 2023 11,735 Thereafter 9,105 Total undiscounted cash flows 181,719 Less: Unearned income (15,027 ) Present value of lease payments $ 166,692

Foreclosed Assets (Tables)

Foreclosed Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract]
Other real estate and foreclosed assets	The following table summarizes foreclosed assets as of the dates indicated: September 30, December 31, Property Type 2019 2018 (In thousands) Commercial real estate $ 199 $ 2,004 Single-family residence 948 953 Construction and land development 219 219 Multi‑family — 1,059 Total other real estate owned, net 1,366 4,235 Other foreclosed assets — 1,064 Total foreclosed assets, net $ 1,366 $ 5,299
Other foreclosed assets rollforward	The following table presents the changes in foreclosed assets, net of the valuation allowance, for the period indicated: Foreclosed Assets (In thousands) Balance, December 31, 2018 $ 5,299 Transfers to foreclosed assets from loans 37 Provision for losses (54 ) Reductions related to sales (3,916 ) Balance, September 30, 2019 $ 1,366

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets disclosure	The following table presents the changes in CDI and CRI and the related accumulated amortization for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2019 2019 2018 2019 2018 (In thousands) Gross Amount of CDI and CRI: Balance, beginning of period $ 119,497 $ 119,497 $ 119,497 $ 119,497 $ 119,497 Fully amortized portion (1,924 ) — — (1,924 ) — Balance, end of period 117,573 119,497 119,497 117,573 119,497 Accumulated Amortization: Balance, beginning of period (72,117 ) (67,247 ) (51,804 ) (62,377 ) (39,871 ) Amortization (4,833 ) (4,870 ) (5,587 ) (14,573 ) (17,520 ) Fully amortized portion 1,924 — — 1,924 — Balance, end of period (75,026 ) (72,117 ) (57,391 ) (75,026 ) (57,391 ) Net CDI and CRI, end of period $ 42,547 $ 47,380 $ 62,106 $ 42,547 $ 62,106

Other Assets (Tables)

Other Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Other Assets [Abstract]
Schedule of Other Assets	The following table presents the detail of our other assets as of the dates indicated: September 30, December 31, Other Assets 2019 2018 (In thousands) Cash surrender value of BOLI $ 197,887 $ 194,897 Operating lease ROU assets, net 134,122 — Interest receivable 80,955 88,754 LIHTC investments 67,367 59,507 CRA investments (1) 62,269 59,062 Prepaid expenses 18,351 18,006 Taxes receivable 17,281 39,096 Equity investments without readily determinable fair values 14,828 14,758 Equity warrants 3,532 4,793 Equity investments with readily determinable fair values 4,715 4,891 Other receivables/assets 19,752 39,132 Total other assets $ 621,059 $ 522,896 ________________________ (1) Includes equity investments without readily determinable fair values of $15.7 million and $12.5 million at September 30, 2019 and December 31, 2018 .

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Schedule of Occupancy Expense and Supplemental Cash Flow Information Related to Operating Leases	The following table presents supplemental cash flow information related to leases for the period indicated: Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 24,674 ROU assets obtained in exchange for lease obligations: Operating leases $ 172,189 Our lease expense is a component of "Occupancy expense" on our condensed consolidated statements of earnings. The following table presents the components of lease expense for the period indicated: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 (In thousands) Operating lease expense: Fixed costs $ 8,347 $ 25,183 Variable costs 7 77 Short-term lease costs 126 849 Sublease income (1,010 ) (3,190 ) Net lease expense $ 7,470 $ 22,919
Schedule of Supplemental Balance Sheet Information Related to Operating Leases	The following table presents supplemental balance sheet and other information related to operating leases as of the date indicated: September 30, 2019 (Dollars in thousands) Operating leases: Operating lease right-of-use assets, net $ 134,122 Operating lease liabilities $ 149,185 Weighted average remaining lease term (in years) 4.8 Weighted average discount rate 2.79 %
Schedule of Maturities of Operating Leases	The following table presents maturities of operating lease liabilities as of the date indicated: September 30, 2019 (In thousands) Period ending December 31, 2019 $ 8,303 2020 32,345 2021 30,090 2022 24,304 2023 21,472 Thereafter 47,582 Total operating lease liabilities 164,096 Less: Imputed interest (14,911 ) Present value of operating lease liabilities $ 149,185
Schedule of Payments to be Received on Operating Leases	The following table presents the rental payments to be received on operating leases as of the date indicated: September 30, 2019 (In thousands) Period Ending December 31, 2019 $ 8,727 2020 35,447 2021 31,743 2022 25,199 2023 22,096 Thereafter 52,717 Total undiscounted cash flows $ 175,929

Borrowings and Subordinated D_2

Borrowings and Subordinated Debentures (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Schedule of debt	The following table summarizes our borrowings as of the dates indicated: September 30, 2019 December 31, 2018 Weighted Weighted Average Average Amount Rate Amount Rate (Dollars in thousands) Non‑recourse debt $ 31 7.50 % $ 114 7.50 % FHLB secured advances 882,000 2.12 % 1,040,000 2.56 % FHLB unsecured overnight advance 141,000 1.95 % 141,000 2.53 % AFX borrowings 230,000 1.92 % 190,000 2.56 % Total borrowings $ 1,253,031 2.06 % $ 1,371,114 2.56 %
Borrowings subordinated debentures and brokered deposits disclosure	The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated: September 30, 2019 December 31, 2018 Date Maturity Rate Index Series Amount Rate Amount Rate Issued Date (Quarterly Reset) (Dollars in thousands) Trust V $ 10,310 5.24 % $ 10,310 5.89 % 8/15/2003 9/17/2033 3-month LIBOR + 3.10 Trust VI 10,310 5.17 % 10,310 5.84 % 9/3/2003 9/15/2033 3-month LIBOR + 3.05 Trust CII 5,155 5.09 % 5,155 5.74 % 9/17/2003 9/17/2033 3-month LIBOR + 2.95 Trust VII 61,856 5.02 % 61,856 5.27 % 2/5/2004 4/23/2034 3-month LIBOR + 2.75 Trust CIII 20,619 3.81 % 20,619 4.48 % 8/15/2005 9/15/2035 3-month LIBOR + 1.69 Trust FCCI 16,495 3.72 % 16,495 4.39 % 1/25/2007 3/15/2037 3-month LIBOR + 1.60 Trust FCBI 10,310 3.67 % 10,310 4.34 % 9/30/2005 12/15/2035 3-month LIBOR + 1.55 Trust CS 2005-1 82,475 4.07 % 82,475 4.74 % 11/21/2005 12/15/2035 3-month LIBOR + 1.95 Trust CS 2005-2 128,866 4.22 % 128,866 4.47 % 12/14/2005 1/30/2036 3-month LIBOR + 1.95 Trust CS 2006-1 51,545 4.22 % 51,545 4.47 % 2/22/2006 4/30/2036 3-month LIBOR + 1.95 Trust CS 2006-2 51,550 4.22 % 51,550 4.47 % 9/27/2006 10/30/2036 3-month LIBOR + 1.95 Trust CS 2006-3 (1) 28,092 1.68 % 29,556 1.73 % 9/29/2006 10/30/2036 3-month EURIBOR + 2.05 Trust CS 2006-4 16,470 4.22 % 16,470 4.47 % 12/5/2006 1/30/2037 3-month LIBOR + 1.95 Trust CS 2006-5 6,650 4.22 % 6,650 4.47 % 12/19/2006 1/30/2037 3-month LIBOR + 1.95 Trust CS 2007-2 39,177 4.22 % 39,177 4.47 % 6/13/2007 7/30/2037 3-month LIBOR + 1.95 Gross subordinated debentures 539,880 4.16 % 541,344 4.51 % Unamortized discount (2) (83,735 ) (87,498 ) Net subordinated debentures $ 456,145 $ 453,846 ___________________ (1) Denomination is in Euros with a value of €25.8 million . (2) Amount represents the fair value adjustment on trust preferred securities assumed in acquisitions.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments disclosure	The following table presents a summary of commitments described below as of the dates indicated: September 30, December 31, 2019 2018 (In thousands) Loan commitments to extend credit $ 7,790,796 $ 7,528,248 Standby letters of credit 367,147 364,210 Commitments to contribute capital to low income housing project partnerships and small business investment companies 116,012 101,991 Commitments to contribute capital to private equity funds 50 50 Total $ 8,274,005 $ 7,994,499

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair value, assets measured on recurring basis	The following tables present information on the assets and liabilities measured and recorded at fair value on a recurring basis as of the dates indicated: Fair Value Measurements as of September 30, 2019 Measured on a Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Securities available‑for‑sale: Agency residential CMOs $ 1,172,555 $ — $ 1,172,555 $ — Agency commercial MBS 1,100,017 — 1,100,017 — Municipal securities 721,981 — 721,981 — Agency residential MBS 324,929 — 324,929 — Asset-backed securities 214,151 — 182,783 31,368 Collateralized loan obligations 113,874 — 113,874 — Private label residential CMOs 93,868 — 87,273 6,595 SBA securities 49,746 — 49,746 — Corporate debt securities 21,024 — 21,024 — U.S. Treasury securities 5,203 5,203 — — Total securities available-for-sale 3,817,348 5,203 3,774,182 37,963 Equity warrants 3,532 — — 3,532 Other derivative assets 2,297 — 2,297 — Equity investments with readily determinable fair values 4,715 4,715 — — Total recurring assets $ 3,827,892 $ 9,918 $ 3,776,479 $ 41,495 Derivative liabilities $ 1,446 $ — $ 1,446 $ — Fair Value Measurements as of December 31, 2018 Measured on a Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Securities available‑for‑sale: Municipal securities $ 1,312,194 $ — $ 1,312,194 $ — Agency commercial MBS 1,112,704 — 1,112,704 — Agency residential CMOs 632,850 — 632,850 — U.S. Treasury securities 403,405 403,405 — — Agency residential MBS 281,088 — 281,088 — Private label residential CMOs 101,205 — 93,917 7,288 Asset-backed securities 81,385 — 41,440 39,945 SBA securities 67,047 — 67,047 — Corporate debt securities 17,553 — 17,553 — Total securities available-for-sale 4,009,431 403,405 3,558,793 47,233 Equity warrants 4,793 — — 4,793 Other derivative assets 3,292 — 3,292 — Equity investments with readily determinable fair values 4,891 4,891 — — Total recurring assets $ 4,022,407 $ 408,296 $ 3,562,085 $ 52,026 Derivative liabilities $ 142 $ — $ 142 $ —
Fair value, assets and liabilities measured on nonrecurring basis, valuation techniques	The following table presents information about quantitative inputs and assumptions used to determine the fair values provided by our third party pricing service for our Level 3 private label CMOs and asset-backed securities available-for-sale measured at fair value on a recurring basis as of the date indicated: September 30, 2019 Private Label CMOs Asset-Backed Securities Weighted Input or Weighted Range Average Range Average Unobservable Inputs of Inputs Input of Inputs Input Voluntary annual prepayment speeds 2.9% - 18.2% 11.4% 12.0% - 15.0% 13.7% Annual default rates (1) 0.0% - 11.1% 1.8% 2.0% 2.0% Loss severity rates (1) 24.1% - 117.6% 58.5% 60.0% 60.0% Discount rates 2.5% - 9.2% 6.3% 3.2% - 5.2% 4.3% ____________________ (1) The annual default rates and loss severity rates were the same for all of the asset-backed securities.
Fair value inputs, assets, quantitative information	The following table presents information about quantitative inputs and assumptions used in the modified Black-Scholes option pricing model to determine the fair value for our Level 3 equity warrants measured at fair value on a recurring basis as of the date indicated: September 30, 2019 Equity Warrants Weighted Average Unobservable Inputs Input Volatility 17.0% Risk-free interest rate 1.6% Remaining life assumption (in years) 3.27 The following table presents the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis as of the date indicated: September 30, 2019 Valuation Unobservable Weighted Asset Fair Value Technique Inputs Range Average (In thousands) Impaired loans $ 21,543 Discounted cash flows Discount rates 3.75% - 8.77% 7.58% Impaired loans 5,047 Third party appraisals No discounts OREO 128 Third party appraisals Discount (1) 31.91% 31.91% Total non-recurring Level 3 $ 26,718 ____________________ (1) Relates to one OREO property at September 30, 2019 .
Fair value, assets measured on recurring basis, significant unobservable inputs (level 3) reconciliation	The following table summarizes activity for our Level 3 private label CMOs available-for-sale, asset-backed securities available-for-sale, and equity warrants measured at fair value on a recurring basis for the period indicated: Private Asset-Backed Equity Label CMOs Securities Warrants (In thousands) Balance, December 31, 2018 $ 7,288 $ 39,945 $ 4,793 Total included in earnings 340 (66 ) 7,429 Total included in other comprehensive income (160 ) 646 — Issuances — — 226 Sales and dispositions (1) — — (8,808 ) Net settlements (873 ) (9,157 ) — Transfers to Level 1 — — (108 ) Balance, September 30, 2019 $ 6,595 $ 31,368 $ 3,532 ______________________ (1) Includes the exercise of warrants that upon exercise become equity securities in public companies. These are often subject to lock-up restrictions that must be met before the equity security can be sold, during which time they are reported as equity investments with readily determinable fair values.
Assets carried at fair value on a nonrecurring basis	The following tables present assets measured at fair value on a non‑recurring basis as of the dates indicated: Fair Value Measurement as of September 30, 2019 Measured on a Non‑Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Impaired loans $ 29,552 $ — $ 2,962 $ 26,590 OREO 128 — — 128 Total non-recurring $ 29,680 $ — $ 2,962 $ 26,718 Fair Value Measurement as of December 31, 2018 Measured on a Non‑Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Impaired loans $ 24,432 $ — $ 1,800 $ 22,632 OREO 1,136 — 1,136 — Total non-recurring $ 25,568 $ — $ 2,936 $ 22,632
Net losses (gains) on nonrecurring assets	The following table presents losses recognized on assets measured on a nonrecurring basis for the periods indicated: Three Months Ended Nine Months Ended Losses on Assets September 30, September 30, Measured on a Non‑Recurring Basis 2019 2018 2019 2018 (In thousands) Impaired loans $ 8,339 $ 14,347 $ 10,091 $ 31,351 OREO 54 — 54 65 Total losses $ 8,393 $ 14,347 $ 10,145 $ 31,416
Fair value, by balance sheet grouping	The following tables present carrying amounts and estimated fair values of certain financial instruments as of the dates indicated: September 30, 2019 Carrying Estimated Fair Value Amount Total Level 1 Level 2 Level 3 ( In thousands ) Financial Assets: Cash and due from banks $ 252,596 $ 252,596 $ 252,596 $ — $ — Interest‑earning deposits in financial institutions 483,405 483,405 483,405 — — Securities available‑for‑sale 3,817,348 3,817,348 5,203 3,774,182 37,963 Investment in FHLB stock 26,865 26,865 — 26,865 — Loans and leases held for investment, net 18,596,991 18,751,105 — 2,962 18,748,143 Equity warrants 3,532 3,532 — — 3,532 Other derivative assets 2,297 2,297 — 2,297 — Equity investments with readily determinable fair values 4,715 4,715 4,715 — — Financial Liabilities: Core deposits 16,471,264 16,471,264 — 16,471,264 — Non-core non-maturity deposits 479,732 479,732 — 479,732 — Time deposits 2,782,207 2,781,713 — 2,781,713 — Borrowings 1,253,031 1,253,031 953,000 300,031 — Subordinated debentures 456,145 439,895 — 439,895 — Derivative liabilities 1,446 1,446 — 1,446 — December 31, 2018 Carrying Estimated Fair Value Amount Total Level 1 Level 2 Level 3 ( In thousands ) Financial Assets: Cash and due from banks $ 175,830 $ 175,830 $ 175,830 $ — $ — Interest‑earning deposits in financial institutions 209,937 209,937 209,937 — — Securities available‑for‑sale 4,009,431 4,009,431 403,405 3,558,793 47,233 Investment in FHLB stock 32,103 32,103 — 32,103 — Loans and leases held for investment, net 17,825,241 17,013,860 — 1,800 17,012,060 Equity warrants 4,793 4,793 — — 4,793 Other derivative assets 3,292 3,292 — 3,292 — Equity investments with readily determinable fair values 4,891 4,891 4,891 — — Financial Liabilities: Core deposits 16,346,671 16,346,671 — 16,346,671 — Non-core non-maturity deposits 518,192 518,192 — 518,192 — Time deposits 2,005,638 2,017,137 — 2,017,137 — Borrowings 1,371,114 1,371,114 1,371,000 114 — Subordinated debentures 453,846 435,251 — 435,251 — Derivative liabilities 142 142 — 142 —

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Net income per share	The following table presents the computations of basic and diluted net earnings per share for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2019 2019 2018 2019 2018 (Dollars in thousands, except per share data) Basic Earnings Per Share: Net earnings $ 110,026 $ 128,125 $ 116,287 $ 350,755 $ 350,298 Less: Earnings allocated to unvested restricted stock (1) (1,369 ) (1,190 ) (1,428 ) (3,725 ) (3,899 ) Net earnings allocated to common shares $ 108,657 $ 126,935 $ 114,859 $ 347,030 $ 346,399 Weighted-average basic shares and unvested restricted stock outstanding 119,831 120,042 123,657 120,691 125,728 Less: Weighted-average unvested restricted stock outstanding (1,622 ) (1,462 ) (1,537 ) (1,480 ) (1,473 ) Weighted-average basic shares outstanding 118,209 118,580 122,120 119,211 124,255 Basic earnings per share $ 0.92 $ 1.07 $ 0.94 $ 2.91 $ 2.79 Diluted Earnings Per Share: Net earnings allocated to common shares $ 108,657 $ 126,935 $ 114,859 $ 347,030 $ 346,399 Weighted-average diluted shares outstanding 118,209 118,580 122,120 119,211 124,255 Diluted earnings per share $ 0.92 $ 1.07 $ 0.94 $ 2.91 $ 2.79 ________________________ (1) Represents cash dividends paid to holders of unvested restricted stock, net of forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.

Revenue From Contracts With C_2

Revenue From Contracts With Customers (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue From Contracts With Customers [Abstract]
Revenue From Contracts With Customers	As illustrated here, substantially all of our revenue is specifically excluded from the scope of Topic 606. Three Months Ended September 30, 2019 Three Months Ended September 30, 2018 Total Revenue from Total Revenue from Recorded Contracts with Recorded Contracts with Revenue Customers Revenue Customers (In thousands) Total interest income $ 307,208 $ — $ 292,642 $ — Noninterest income: Service charges on deposit accounts 3,525 3,525 3,979 3,979 Other commissions and fees 10,855 4,965 12,397 4,767 Leased equipment income 9,615 — 9,120 — Gain on sale of loans 765 — — — Gain on sale of securities 908 — 826 — Other income 7,761 428 10,590 444 Total noninterest income 33,429 8,918 36,912 9,190 Total revenue $ 340,637 $ 8,918 $ 329,554 $ 9,190
Revenue Recognition of Contracts With Customers	The following table presents revenue from contracts with customers based on the timing of revenue recognition for the periods indicated: Three Months Ended September 30, 2019 2018 (In thousands) Products and services transferred at a point in time $ 5,046 $ 4,604 Products and services transferred over time 3,872 4,586 Total revenue from contracts with customers $ 8,918 $ 9,190
Contract with Customer, Asset and Liability	The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers: September 30, 2019 December 31, 2018 (In thousands) Receivables, which are included in "Other assets" $ 1,494 $ 1,334 Contract assets, which are included in "Other assets" $ — $ — Contract liabilities, which are included in "Accrued interest payable and other liabilities" $ 523 $ 621

Recently Issued Accounting St_2

Recently Issued Accounting Standards (Tables)	9 Months Ended
	Sep. 30, 2019
Recently Issued Accounting Standards [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2016-13, " Measurement of Credit Losses on Financial Instruments, " ASU 2018-19, “ Codification Improvements to Topic 326, Financial Instruments - Credit Losses,” and ASU 2019-05, " Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief " 1. This Update changes the accounting and recognition of credit losses and impairment of financial assets recorded at amortized cost. Under the CECL model, the standard requires immediate recognition of estimated credit losses expected to occur over the remaining life of the asset. The forward-looking concept of CECL requires loss estimates for the remaining estimated life of the financial assets using historical experience, current conditions and reasonable and supportable forecasts. 2. The Update modifies the other-than-temporary impairment (OTTI) model for AFS debt securities to require an allowance for credit impairment instead of a direct write-down, which allows for reversal of credit improvements in future periods. 3 . In addition, the Update eliminates the existing guidance for PCI loans, but requires an allowance for purchased financial assets with credit deterioration. 4 . Receivables arising from operating leases are not within the scope of CECL. 5. The Update must be applied using the modified retrospective method with a cumulative-effect adjustment to retained earnings as of the beginning of the year of adoption. A prospective transition approach is required for available-for-sale debt securities for which an OTTI had been recognized before the adoption date. Early adoption is permitted. January 1, 2020 1. The Company has established a multidisciplinary project team and implementation plan, selected a software solution, reached accounting decisions on various matters, developed a conceptual framework, and developed econometric regression models for the reasonable and supportable ("R&S") forecast period. 2. The Company continues to test and refine the CECL models and has completed four preliminary calculations with one more scheduled before adoption. The Company continues to perform testing and sensitivity analysis on its modeling assumptions and results. 3. Our planned approach for estimating expected life-time credit losses include the following key components for all loan portfolio segments: a. The use of a probability of default/loss given default methodology; b. A single scenario based on the consensus forecast from Moody's to develop an economic forecast for the R&S period; c. An initial R&S forecast period of four quarters for all loan portfolio segments, which reflects management's expectation of losses based on forward-looking economic scenarios over that time; d. A post-R&S reversion period of two quarters using a straight-line approach; e. A historical loss period of at least 40 quarters, which represents a full economic credit cycle; and f. Prepayments rates based on our historical experience. 4. We plan to adopt this new standard on January 1, 2020. Our latest estimate of the impact based on September 30, 2019 loan data and economic forecasts indicates that the allowance for credit losses would increase from 0% to 10% upon adoption. We have also updated our internal controls over financial reporting in preparation of adopting this new standard. 5. The current estimate and future calculations are highly dependent on loan composition, of which the vast majority is comprised of short-duration commercial loans; the macroeconomic conditions and forecasts; and other management assumptions and judgments. Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2017-04, " Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" 1. This Update simplifies goodwill impairment testing by eliminating the second step of the analysis under which the implied fair value of goodwill is determined as if the reporting unit were being acquired in a business combination. 2. The goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and an impairment charge would be recognized for any amount by which the carrying amount exceeds the reporting unit's fair value, to the extent that the loss recognized does not exceed the amount of goodwill allocated to that reporting unit. 3. The Update must be applied prospectively and early adoption is permitted. January 1, 2020 The adoption of this guidance is not expected to have a material impact on the Company’s consolidated financial position or results of operations and we plan to adopt this standard on January 1, 2020. Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2018-13, “ Fair Value Measurement (Topic 820): Disclosure Framework - Changes to Disclosure Requirements for Fair Value Measurements” 1. This Update modified the disclosure requirements in Topic 820 to add disclosures regarding changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements and the narrative description of measurement uncertainty. 2. Certain disclosure requirements in Topic 820 are also removed or modified. Certain disclosures in ASU 2018-13 would need to be applied on a retrospective basis and others on a prospective basis and early adoption is permitted. January 1, 2020 The adoption of this guidance will modify disclosures but will not have an impact on the Company’s consolidated financial position or results of operations. The Company has early adopted any removed or modified disclosures effective January 1, 2019 but will defer adoption of the additional disclosures until January 1, 2020 as permitted in the transition guidance of the standard. Effective Effect on the Financial Statements Standard Description Date or Other Significant Matters ASU 2019-04, " Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments " 1. This Update made clarifications and amendments to five topics: (i) Topic A: Codification Improvements Resulting from the June and November 2018 Credit Losses Transition Resource Group ("TRG") Meetings, (ii) Topic B: Codification Improvements to ASU 2016-13, (iii) Topic C: Codification Improvements to ASU 2017-12, " Derivatives and Hedging (Topic 815) " and Other Hedging Items, (iv) Topic D: Codification Improvements to ASU 2016-01, " Financial Instruments - Overall (Subtopic 825-10) ," and (v) Topic E: Codification Improvements Resulting from the November 2018 Credit Losses TRG Meeting. 2. In addition to conforming amendments that correct for errors and oversights, the Update in Topics A, B, and E, which impacts CECL implementation, amends or clarifies guidance for accrued interest; transfers between classifications or categories of loans and debt securities; recoveries; effect of prepayments in determining the effective interest rate; estimated costs to sell when foreclosure is probable; vintage disclosure presentation related to line-of-credit arrangements converted to term loans; contractual extensions or renewals; and others. 3. Transition requirements for the amendments are the same as ASU 2016-13 for the Update in Topics A, B, and E. The Update in Topic C may be applied retrospectively as of the date of initial adoption of ASU 2017-12 or prospectively. The Update in Topic D must be applied on a modified retrospective method with a cumulative-effect adjustment to retained earnings as of the beginning of the year of adoption and early adoption is permitted. January 1, 2020; except for Topic C - January 1, 2019 1. Impacts from the adoption of Topics A, B, and E within this Update will be considered in the Company's overall CECL implementation and we plan to adopt this Update concurrent with the adoption of ASU 2016-13. 2. The adoption of Topic D within this Update is not expected to have a material impact on the Company's consolidated financial position or results of operations and we plan to adopt this standard on January 1, 2020. 3. Topic C within this Update is not applicable to us and therefore there is no impact on the Company's consolidated financial position or results of operations.

Organization (Details Textual)

Organization (Details Textual) $ in Thousands		Jan. 01, 2019USD ($)	Mar. 31, 2018USD ($)	Sep. 30, 2019acquisitionbank_branch
Business Acquisition [Line Items]
Number of Businesses Acquired | acquisition				29
Cumulative effect of change in accounting principle | $	[1]	$ 938	$ 0
CALIFORNIA
Business Acquisition [Line Items]
Retail Branch Locations				74
NORTH CAROLINA
Business Acquisition [Line Items]
Retail Branch Locations				1
[1]	Impact due to adoption on January 1, 2019 of ASU 2016-02, " Leases (Topic 842)," and the related amendments.

Restricted Cash Balances (Detai

Restricted Cash Balances (Details Textual) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Restricted Cash [Abstract]
Restricted Cash and Cash Equivalents	$ 118.2	$ 77
Pledged Cash for Derivative Contracts	$ 3.2	$ 2.6

Investment Securities (Details)

Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	$ 3,683,521	$ 4,017,909
Available-for-sale Securities, Gross Unrealized Gain	135,415	31,812
Available-for-sale Securities, Gross Unrealized Loss	(1,588)	(40,290)
Securities available‑for‑sale	3,817,348	4,009,431
Government agency and government-sponsored enterprise pass through securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	313,935	281,486
Available-for-sale Securities, Gross Unrealized Gain	10,995	1,902
Available-for-sale Securities, Gross Unrealized Loss	(1)	(2,300)
Securities available‑for‑sale	324,929	281,088
Government agency and government-sponsored enterprise collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	1,141,332	634,774
Available-for-sale Securities, Gross Unrealized Gain	31,627	3,448
Available-for-sale Securities, Gross Unrealized Loss	(404)	(5,372)
Securities available‑for‑sale	1,172,555	632,850
Private label collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	89,859	101,313
Available-for-sale Securities, Gross Unrealized Gain	4,011	1,985
Available-for-sale Securities, Gross Unrealized Loss	(2)	(2,093)
Securities available‑for‑sale	93,868	101,205
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	675,645	1,298,514
Available-for-sale Securities, Gross Unrealized Gain	46,336	21,000
Available-for-sale Securities, Gross Unrealized Loss	0	(7,320)
Securities available‑for‑sale	721,981	1,312,194
Government agency and government-sponsored enterprise commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	1,063,659	1,133,846
Available-for-sale Securities, Gross Unrealized Gain	36,539	383
Available-for-sale Securities, Gross Unrealized Loss	(181)	(21,525)
Securities available‑for‑sale	1,100,017	1,112,704
US Treasury Securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	4,984	401,056
Available-for-sale Securities, Gross Unrealized Gain	219	2,437
Available-for-sale Securities, Gross Unrealized Loss	0	(88)
Securities available‑for‑sale	5,203	403,405
Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	214,153	81,762
Available-for-sale Securities, Gross Unrealized Gain	700	104
Available-for-sale Securities, Gross Unrealized Loss	(702)	(481)
Securities available‑for‑sale	214,151	81,385
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	114,149
Available-for-sale Securities, Gross Unrealized Gain	23
Available-for-sale Securities, Gross Unrealized Loss	(298)
Securities available‑for‑sale	113,874
SBA asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	48,805	68,158
Available-for-sale Securities, Gross Unrealized Gain	941	0
Available-for-sale Securities, Gross Unrealized Loss	0	(1,111)
Securities available‑for‑sale	49,746	67,047
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	17,000	17,000
Available-for-sale Securities, Gross Unrealized Gain	4,024	553
Available-for-sale Securities, Gross Unrealized Loss	0	0
Securities available‑for‑sale	$ 21,024	$ 17,553

Investment Securities (Details

Investment Securities (Details 1) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	$ 546,888	$ 316,746
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	(1,570)	(2,032)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	2,683	1,706,835
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(18)	(38,258)
Unrealized Losses on Securities Available-for-Sale, Fair Value	549,571	2,023,581
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(1,588)	(40,290)
Government agency and government-sponsored enterprise pass through securities
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	0	60,164
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	0	(169)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	435	85,245
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(1)	(2,131)
Unrealized Losses on Securities Available-for-Sale, Fair Value	435	145,409
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(1)	(2,300)
Government agency and government-sponsored enterprise collateralized mortgage obligations
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	172,738	69,859
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	(389)	(326)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	2,127	164,097
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(15)	(5,046)
Unrealized Losses on Securities Available-for-Sale, Fair Value	174,865	233,956
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(404)	(5,372)
Private label collateralized mortgage obligations
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	0	32,170
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	0	(831)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	121	49,237
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(2)	(1,262)
Unrealized Losses on Securities Available-for-Sale, Fair Value	121	81,407
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(2)	(2,093)
Collateralized loan obligations
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	82,606
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	(298)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	0
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	0
Unrealized Losses on Securities Available-for-Sale, Fair Value	82,606
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(298)
Municipal securities
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value		52,386
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses		(238)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value		284,915
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses		(7,082)
Unrealized Losses on Securities Available-for-Sale, Fair Value		337,301
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses		(7,320)
Government agency and government-sponsored enterprise commercial mortgage-backed securities
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	176,063	40,641
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	(181)	(341)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	0	1,020,684
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	0	(21,184)
Unrealized Losses on Securities Available-for-Sale, Fair Value	176,063	1,061,325
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(181)	(21,525)
US Treasury Securities
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value		49,729
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses		(88)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value		0
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses		0
Unrealized Losses on Securities Available-for-Sale, Fair Value		49,729
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses		(88)
Asset-backed Securities
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	115,481	11,548
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	(702)	(38)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	0	35,859
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	0	(443)
Unrealized Losses on Securities Available-for-Sale, Fair Value	115,481	47,407
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	$ (702)	(481)
SBA asset-backed securities
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value		249
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses		(1)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value		66,798
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses		(1,110)
Unrealized Losses on Securities Available-for-Sale, Fair Value		67,047
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses		$ (1,111)

Investment Securities (Detail_2

Investment Securities (Details 2) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 3,240
Due after one year through five years	227,670
Due after five years through ten years	1,020,128
Due after ten years	2,432,483
Total securities available-for-sale	3,683,521	$ 4,017,909
Fair Value
Due in one year or less	3,248
Due after one year through five years	232,238
Due after five years through ten years	1,056,640
Due after ten years	2,525,222
Total securities available-for-sale	$ 3,817,348	$ 4,009,431

Investment Securities (Detail_3

Investment Securities (Details 3) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Taxable interest	$ 22,829	$ 20,944	$ 17,618	$ 63,515	$ 49,323
Non-taxable interest	5,565	7,547	10,127	22,705	31,510
Dividend income	412	457	316	1,214	1,096
Total interest income on investment securities	$ 28,806	$ 28,948	$ 28,061	$ 87,434	$ 81,929

Investment Securities (Detail_4

Investment Securities (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Debt Securities, Available-for-sale [Line Items]
AFS securities pledged as collateral	$ 495,000		$ 495,000
Proceeds from sales of securities available-for-sale			$ 1,554,805	$ 500,101
Gross realized gains on sale of securities	1,200	$ 1,000
Gross realized losses on sale of securities	(300)	(100)
Available-for-sale Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales of securities available-for-sale	$ 143,400	$ 130,500

Loans and Leases (Details)

Loans and Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment	$ 18,796,011		$ 18,026,365
Deferred fees, net	(60,468)		(68,652)
Loans held for investment, net	18,735,543		17,957,713
Allowance for loan and lease losses	(138,552)	$ (135,037)	(132,472)	$ (141,920)	$ (132,139)
Total loans and leases held for investment, net	18,596,991		17,825,241
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment, net	18,735,543		17,957,713	17,230,146
Allowance for loan and lease losses	(138,552)	(135,037)	(132,472)	(141,920)	(132,139)	$ (139,456)
Real Estate Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment	7,908,097
Loans held for investment, net	7,896,924		7,918,141
Real Estate Mortgage | NonPCI and PCI Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment			7,933,859
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment, net	7,896,924		7,918,141	7,678,660
Allowance for loan and lease losses	(45,146)	(46,826)	(46,021)	(46,357)	(45,467)	(40,051)
Real Estate Construction and Land
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment	2,581,317
Loans held for investment, net	2,551,474		2,233,656
Real Estate Construction and Land | NonPCI and PCI Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment			2,262,710
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment, net	2,551,474		2,233,656	2,000,957
Allowance for loan and lease losses	(27,061)	(26,378)	(28,209)	(26,186)	(26,210)	(13,055)
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment	7,898,042
Loans held for investment, net	7,878,557		7,404,595
Commercial | NonPCI and PCI Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment			7,428,500
Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment, net	7,878,557		7,404,595	7,152,058
Allowance for loan and lease losses	(64,185)	(59,401)	(56,360)	(67,644)	(58,806)	(84,022)
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment	408,555
Loans held for investment, net			401,321
Consumer | NonPCI and PCI Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment			401,296
Consumer | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment, net	408,588		401,321	398,471
Allowance for loan and lease losses	$ (2,160)	$ (2,432)	$ (1,882)	$ (1,733)	$ (1,656)	$ (2,328)

Loans and Leases (Details 1)

Loans and Leases (Details 1) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Delinquent loans in loan portfolio
30-89 Days Past Due	$ 17,625	$ 6,600
90 or More Days Past Due	10,917	10,700
Total Past Due	28,542
Current	18,707,001
Loans held for investment, net	18,735,543	17,957,713
Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		17,085
90 or More Days Past Due		10,723
Total Past Due		27,808
Current		17,929,905
Loans held for investment, net	18,735,543	17,957,713	$ 17,230,146
Real Estate Mortgage
Delinquent loans in loan portfolio
30-89 Days Past Due	7,418
90 or More Days Past Due	7,606
Total Past Due	15,024
Current	7,881,900
Loans held for investment, net	7,896,924	7,918,141
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		5,044
90 or More Days Past Due		8,017
Total Past Due		13,061
Current		7,905,080
Loans held for investment, net	7,896,924	7,918,141	7,678,660
Real Estate Mortgage | Commercial
Delinquent loans in loan portfolio
30-89 Days Past Due	2,867
90 or More Days Past Due	7,137
Total Past Due	10,004
Current	4,290,562
Loans held for investment, net	4,300,566	4,824,298
Real Estate Mortgage | Commercial | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		3,487
90 or More Days Past Due		7,541
Total Past Due		11,028
Current		4,813,270
Loans held for investment, net		4,824,298
Real Estate Mortgage | Residential Real Estate
Delinquent loans in loan portfolio
30-89 Days Past Due	4,551
90 or More Days Past Due	469
Total Past Due	5,020
Current	3,591,338
Loans held for investment, net	3,596,358	3,093,843
Real Estate Mortgage | Residential Real Estate | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		1,557
90 or More Days Past Due		476
Total Past Due		2,033
Current		3,091,810
Loans held for investment, net		3,093,843
Real Estate Construction and Land
Delinquent loans in loan portfolio
30-89 Days Past Due	2,622
90 or More Days Past Due	0
Total Past Due	2,622
Current	2,548,852
Loans held for investment, net	2,551,474	2,233,656
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		1,527
90 or More Days Past Due		442
Total Past Due		1,969
Current		2,231,687
Loans held for investment, net	2,551,474	2,233,656	2,000,957
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable
Delinquent loans in loan portfolio
30-89 Days Past Due	0
90 or More Days Past Due	0
Total Past Due	0
Current	1,009,362
Loans held for investment, net	1,009,362	912,583
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		0
90 or More Days Past Due		442
Total Past Due		442
Current		912,141
Loans held for investment, net		912,583
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable
Delinquent loans in loan portfolio
30-89 Days Past Due	2,622
90 or More Days Past Due	0
Total Past Due	2,622
Current	1,539,490
Loans held for investment, net	1,542,112	1,321,073
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		1,527
90 or More Days Past Due		0
Total Past Due		1,527
Current		1,319,546
Loans held for investment, net		1,321,073
Commercial
Delinquent loans in loan portfolio
30-89 Days Past Due	6,790
90 or More Days Past Due	2,903
Total Past Due	9,693
Current	7,868,864
Loans held for investment, net	7,878,557	7,404,595
Commercial | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		9,933
90 or More Days Past Due		1,931
Total Past Due		11,864
Current		7,392,731
Loans held for investment, net	7,878,557	7,404,595	7,152,058
Commercial | Asset-based
Delinquent loans in loan portfolio
30-89 Days Past Due	48
90 or More Days Past Due	662
Total Past Due	710
Current	3,810,031
Loans held for investment, net	3,810,741	3,305,421
Commercial | Asset-based | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		47
90 or More Days Past Due		646
Total Past Due		693
Current		3,304,728
Loans held for investment, net		3,305,421
Commercial | Venture Capital Loans
Delinquent loans in loan portfolio
30-89 Days Past Due	0
90 or More Days Past Due	0
Total Past Due	0
Current	2,209,649
Loans held for investment, net	2,209,649	2,038,748
Commercial | Venture Capital Loans | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		4,705
90 or More Days Past Due		0
Total Past Due		4,705
Current		2,034,043
Loans held for investment, net		2,038,748
Commercial | Other Commercial
Delinquent loans in loan portfolio
30-89 Days Past Due	6,742
90 or More Days Past Due	2,241
Total Past Due	8,983
Current	1,849,184
Loans held for investment, net	1,858,167	2,060,426
Commercial | Other Commercial | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		5,181
90 or More Days Past Due		1,285
Total Past Due		6,466
Current		2,053,960
Loans held for investment, net		2,060,426
Consumer
Delinquent loans in loan portfolio
30-89 Days Past Due	795
90 or More Days Past Due	408
Total Past Due	1,203
Current	407,385
Loans held for investment, net		401,321
Consumer | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due		581
90 or More Days Past Due		333
Total Past Due		914
Current		400,407
Loans held for investment, net	$ 408,588	$ 401,321	$ 398,471

Loans and Leases (Details 2)

Loans and Leases (Details 2) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Financing Receivable, Impaired [Line Items]
Nonaccrual	$ 99,113	$ 79,333
Loans held for investment	18,735,543	17,957,713
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		79,333
Loans held for investment	18,735,543	17,957,713	$ 17,230,146
Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	18,636,430
Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		17,878,380
Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Nonaccrual	22,383
Loans held for investment	7,896,924	7,918,141
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		17,845
Loans held for investment	7,896,924	7,918,141	7,678,660
Real Estate Mortgage | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	7,874,541
Real Estate Mortgage | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		7,900,296
Real Estate Mortgage | Commercial
Financing Receivable, Impaired [Line Items]
Nonaccrual	19,515
Loans held for investment	4,300,566	4,824,298
Real Estate Mortgage | Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		15,321
Loans held for investment		4,824,298
Real Estate Mortgage | Commercial | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	4,281,051
Real Estate Mortgage | Commercial | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		4,808,977
Real Estate Mortgage | Residential Real Estate
Financing Receivable, Impaired [Line Items]
Nonaccrual	2,868
Loans held for investment	3,596,358	3,093,843
Real Estate Mortgage | Residential Real Estate | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		2,524
Loans held for investment		3,093,843
Real Estate Mortgage | Residential Real Estate | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	3,593,490
Real Estate Mortgage | Residential Real Estate | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		3,091,319
Real Estate Construction and Land
Financing Receivable, Impaired [Line Items]
Nonaccrual	377
Loans held for investment	2,551,474	2,233,656
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		442
Loans held for investment	2,551,474	2,233,656	2,000,957
Real Estate Construction and Land | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	2,551,097
Real Estate Construction and Land | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		2,233,214
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable
Financing Receivable, Impaired [Line Items]
Nonaccrual	377
Loans held for investment	1,009,362	912,583
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		442
Loans held for investment		912,583
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	1,008,985
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		912,141
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable
Financing Receivable, Impaired [Line Items]
Nonaccrual	0
Loans held for investment	1,542,112	1,321,073
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		0
Loans held for investment		1,321,073
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	1,542,112
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		1,321,073
Commercial
Financing Receivable, Impaired [Line Items]
Nonaccrual	75,700
Loans held for investment	7,878,557	7,404,595
Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		60,003
Loans held for investment	7,878,557	7,404,595	7,152,058
Commercial | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	7,802,857
Commercial | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		7,344,592
Commercial | Asset-based
Financing Receivable, Impaired [Line Items]
Nonaccrual	33,015
Loans held for investment	3,810,741	3,305,421
Commercial | Asset-based | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		32,324
Loans held for investment		3,305,421
Commercial | Asset-based | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	3,777,726
Commercial | Asset-based | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		3,273,097
Commercial | Venture Capital Loans
Financing Receivable, Impaired [Line Items]
Nonaccrual	20,131
Loans held for investment	2,209,649	2,038,748
Commercial | Venture Capital Loans | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		20,299
Loans held for investment		2,038,748
Commercial | Venture Capital Loans | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	2,189,518
Commercial | Venture Capital Loans | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		2,018,449
Commercial | Other Commercial
Financing Receivable, Impaired [Line Items]
Nonaccrual	22,554
Loans held for investment	1,858,167	2,060,426
Commercial | Other Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		7,380
Loans held for investment		2,060,426
Commercial | Other Commercial | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	1,835,613
Commercial | Other Commercial | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		2,053,046
Consumer
Financing Receivable, Impaired [Line Items]
Nonaccrual	653
Loans held for investment		401,321
Consumer | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		1,043
Loans held for investment	408,588	401,321	$ 398,471
Consumer | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	$ 407,935
Consumer | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment		$ 400,278

Loans and Leases (Details 3)

Loans and Leases (Details 3) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Financing Receivable, Past Due [Line Items]
Loans held for investment	$ 18,735,543	$ 17,957,713
Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	188,607	237,110
Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	267,925	261,398
Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	18,279,011	17,459,205
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment	18,735,543	17,957,713	$ 17,230,146
Real Estate Mortgage
Financing Receivable, Past Due [Line Items]
Loans held for investment	7,896,924	7,918,141
Real Estate Mortgage | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	43,622	68,255
Real Estate Mortgage | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	40,314	75,753
Real Estate Mortgage | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	7,812,988	7,774,133
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment	7,896,924	7,918,141	7,678,660
Real Estate Mortgage | Commercial
Financing Receivable, Past Due [Line Items]
Loans held for investment	4,300,566	4,824,298
Real Estate Mortgage | Commercial | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	34,952	57,734
Real Estate Mortgage | Commercial | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	39,309	74,785
Real Estate Mortgage | Commercial | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	4,226,305	4,691,779
Real Estate Mortgage | Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment		4,824,298
Real Estate Mortgage | Residential Real Estate
Financing Receivable, Past Due [Line Items]
Loans held for investment	3,596,358	3,093,843
Real Estate Mortgage | Residential Real Estate | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	8,670	10,521
Real Estate Mortgage | Residential Real Estate | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,005	968
Real Estate Mortgage | Residential Real Estate | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	3,586,683	3,082,354
Real Estate Mortgage | Residential Real Estate | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment		3,093,843
Real Estate Construction and Land
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,551,474	2,233,656
Real Estate Construction and Land | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	377	442
Real Estate Construction and Land | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	837	8,568
Real Estate Construction and Land | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,550,260	2,224,646
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,551,474	2,233,656	2,000,957
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,009,362	912,583
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	377	442
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	7,041
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,008,985	905,100
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment		912,583
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,542,112	1,321,073
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	0	0
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	837	1,527
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,541,275	1,319,546
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment		1,321,073
Commercial
Financing Receivable, Past Due [Line Items]
Loans held for investment	7,878,557	7,404,595
Commercial | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	143,830	167,214
Commercial | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	226,160	176,062
Commercial | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	7,508,567	7,061,319
Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment	7,878,557	7,404,595	7,152,058
Commercial | Asset-based
Financing Receivable, Past Due [Line Items]
Loans held for investment	3,810,741	3,305,421
Commercial | Asset-based | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	50,634	45,957
Commercial | Asset-based | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	41,974	48,338
Commercial | Asset-based | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	3,718,133	3,211,126
Commercial | Asset-based | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment		3,305,421
Commercial | Venture Capital Loans
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,209,649	2,038,748
Commercial | Venture Capital Loans | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	34,489	28,731
Commercial | Venture Capital Loans | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	66,255	77,588
Commercial | Venture Capital Loans | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,108,905	1,932,429
Commercial | Venture Capital Loans | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment		2,038,748
Commercial | Other Commercial
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,858,167	2,060,426
Commercial | Other Commercial | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	58,707	92,526
Commercial | Other Commercial | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	117,931	50,136
Commercial | Other Commercial | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,681,529	1,917,764
Commercial | Other Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment		2,060,426
Consumer
Financing Receivable, Past Due [Line Items]
Loans held for investment		401,321
Consumer | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	778	1,199
Consumer | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	614	1,015
Consumer | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	407,196	399,107
Consumer | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment	$ 408,588	$ 401,321	$ 398,471

Loans and Leases (Details 4)

Loans and Leases (Details 4) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	$ 99,113	$ 79,333
Performing Restructured Loans	16,329	17,701
Total Impaired Loans and Leases	115,442	97,034
Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases		79,333
Total Impaired Loans and Leases		97,034
Real Estate Mortgage
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	22,383
Performing Restructured Loans	10,292
Total Impaired Loans and Leases	32,675
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases		17,845
Performing Restructured Loans		11,484
Total Impaired Loans and Leases		29,329
Real Estate Construction and Land
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	377
Performing Restructured Loans	4,980
Total Impaired Loans and Leases	5,357
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases		442
Performing Restructured Loans		5,420
Total Impaired Loans and Leases		5,862
Commercial
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	75,700
Performing Restructured Loans	980
Total Impaired Loans and Leases	76,680
Commercial | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases		60,003
Performing Restructured Loans		692
Total Impaired Loans and Leases		60,695
Consumer
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	653
Performing Restructured Loans	77
Total Impaired Loans and Leases	$ 730
Consumer | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases		1,043
Performing Restructured Loans		105
Total Impaired Loans and Leases		$ 1,148

Loans and Leases (Details 5)

Loans and Leases (Details 5) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance	$ 9,330		$ 9,330
Total Impaired Loans and Leases	115,442		115,442		$ 97,034
Impaired Financing Receivable, Unpaid Principal Balance	203,494		203,494
Impaired Financing Receivable, Average Recorded Investment	95,216		84,732
Impaired Financing Receivable, Interest Income, Accrual Method	249		735
Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance	248		248
Total Impaired Loans and Leases	32,675		32,675
Impaired Financing Receivable, Unpaid Principal Balance	50,141		50,141
Impaired Financing Receivable, Average Recorded Investment	29,876		26,733
Impaired Financing Receivable, Interest Income, Accrual Method	135		393
Real Estate Construction and Land
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance	0		0
Total Impaired Loans and Leases	5,357		5,357
Impaired Financing Receivable, Unpaid Principal Balance	5,402		5,402
Impaired Financing Receivable, Average Recorded Investment	5,357		5,357
Impaired Financing Receivable, Interest Income, Accrual Method	98		290
Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance	9,082		9,082
Total Impaired Loans and Leases	76,680		76,680
Impaired Financing Receivable, Unpaid Principal Balance	147,055		147,055
Impaired Financing Receivable, Average Recorded Investment	59,415		52,149
Impaired Financing Receivable, Interest Income, Accrual Method	15		48
Consumer
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance	0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	730		730
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	896		896
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	568		493
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	1		4
Total Impaired Loans and Leases	730		730
Impaired Financing Receivable, Unpaid Principal Balance	896		896
Impaired Financing Receivable, Average Recorded Investment	568		493
Impaired Financing Receivable, Interest Income, Accrual Method	1		4
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance					4,031
Total Impaired Loans and Leases					97,034
Impaired Financing Receivable, Unpaid Principal Balance					171,923
Impaired Financing Receivable, Average Recorded Investment		$ 126,081		$ 111,636
Impaired Financing Receivable, Interest Income, Accrual Method		335		984
Non Purchased Credit Impaired Loans and Leases | Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance					417
Total Impaired Loans and Leases					29,329
Impaired Financing Receivable, Unpaid Principal Balance					45,671
Impaired Financing Receivable, Average Recorded Investment		46,336		44,218
Impaired Financing Receivable, Interest Income, Accrual Method		213		625
Non Purchased Credit Impaired Loans and Leases | Real Estate Construction and Land
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance					0
Total Impaired Loans and Leases					5,862
Impaired Financing Receivable, Unpaid Principal Balance					5,870
Impaired Financing Receivable, Average Recorded Investment		5,533		5,533
Impaired Financing Receivable, Interest Income, Accrual Method		95		283
Non Purchased Credit Impaired Loans and Leases | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance					3,614
Total Impaired Loans and Leases					60,695
Impaired Financing Receivable, Unpaid Principal Balance					118,912
Impaired Financing Receivable, Average Recorded Investment		73,829		61,512
Impaired Financing Receivable, Interest Income, Accrual Method		25		70
Non Purchased Credit Impaired Loans and Leases | Consumer
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance					0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment					1,148
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance					1,470
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		383		373
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		2		6
Total Impaired Loans and Leases					1,148
Impaired Financing Receivable, Unpaid Principal Balance					1,470
Impaired Financing Receivable, Average Recorded Investment		383		373
Impaired Financing Receivable, Interest Income, Accrual Method		2		6
Asset-based | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	32,515		32,515
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	50,633		50,633
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	163		55
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	30,880		29,989
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0
Asset-based | Non Purchased Credit Impaired Loans and Leases | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	500		500		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	500		500		0
Impaired Financing Receivable, with Related Allowance, Related Allowance	500		500		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment					32,324
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance					38,100
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		34,618		34,618
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0		0
Venture Capital Loans | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	12,379		12,379
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	13,570		13,570
Impaired Financing Receivable, with Related Allowance, Related Allowance	6,177		6,177
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	7,752		7,752
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	39,440		39,440
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	12,343		9,201
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	7,752		6,173
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0
Venture Capital Loans | Non Purchased Credit Impaired Loans and Leases | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment					11,621
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance					13,255
Impaired Financing Receivable, with Related Allowance, Related Allowance					3,141
Impaired Financing Receivable, with No Related Allowance, Recorded Investment					8,678
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance					41,335
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		28,322		17,459
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		1,421		1,330
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0		0
Other Commercial | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	16,969		16,969
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	18,044		18,044
Impaired Financing Receivable, with Related Allowance, Related Allowance	2,405		2,405
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	6,565		6,565
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	24,868		24,868
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	2,181		1,125
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	9		26
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	6,096		5,606
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	6		22
Other Commercial | Non Purchased Credit Impaired Loans and Leases | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment					473
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance					482
Impaired Financing Receivable, with Related Allowance, Related Allowance					473
Impaired Financing Receivable, with No Related Allowance, Recorded Investment					7,599
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance					25,740
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		1,360		688
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		8,108		7,417
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		25		70
Commercial Real Estate Construction Loan Receivable | Real Estate Construction and Land
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	5,357		5,357
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	5,402		5,402
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	5,357		5,357
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	98		290
Commercial Real Estate Construction Loan Receivable | Non Purchased Credit Impaired Loans and Leases | Real Estate Construction and Land
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment					5,862
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance					5,870
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		5,533		5,533
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		95		283
Residential Real Estate Construction Financing Receivable | Real Estate Construction and Land
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0
Residential Real Estate Construction Financing Receivable | Non Purchased Credit Impaired Loans and Leases | Real Estate Construction and Land
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0
Commercial | Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	485		485
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	485		485
Impaired Financing Receivable, with Related Allowance, Related Allowance	71		71
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	22,503		22,503
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	37,568		37,568
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	485		485
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	8		24
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	19,745		16,729
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	56		162
Commercial | Non Purchased Credit Impaired Loans and Leases | Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment					1,736
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance					1,648
Impaired Financing Receivable, with Related Allowance, Related Allowance					170
Impaired Financing Receivable, with No Related Allowance, Recorded Investment					17,783
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance					32,035
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		1,781		1,781
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		18		55
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		34,155		32,098
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		129		376
Residential Real Estate | Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	2,032		2,032
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	2,030		2,030
Impaired Financing Receivable, with Related Allowance, Related Allowance	177		177
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	7,655		7,655
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	10,058		10,058
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	2,031		2,031
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	15		44
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	7,615		7,488
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	$ 56		$ 163
Residential Real Estate | Non Purchased Credit Impaired Loans and Leases | Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment					2,569
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance					2,563
Impaired Financing Receivable, with Related Allowance, Related Allowance					247
Impaired Financing Receivable, with No Related Allowance, Recorded Investment					7,241
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance					$ 9,425
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		2,494		2,494
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		21		62
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		7,906		7,845
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		$ 45		$ 132

Loans and Leases (Details 6)

Loans and Leases (Details 6) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)contract	Sep. 30, 2018USD ($)contract	Sep. 30, 2019USD ($)contract	Sep. 30, 2018USD ($)contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	6	23	34	35
Pre-Modification Outstanding Recorded Investment	$ 594	$ 57,736	$ 18,805	$ 76,517
Post-Modification Outstanding Recorded Investment	$ 594	$ 60,187	$ 18,906	$ 77,909
Real Estate Mortgage | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	0	4	1	4
Pre-Modification Outstanding Recorded Investment	$ 0	$ 2,889	$ 37	$ 2,889
Post-Modification Outstanding Recorded Investment	$ 0	$ 712	$ 0	$ 712
Real Estate Mortgage | Residential Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	2	5	7	8
Pre-Modification Outstanding Recorded Investment	$ 495	$ 912	$ 1,280	$ 2,616
Post-Modification Outstanding Recorded Investment	$ 495	$ 912	$ 1,280	$ 1,557
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract				0
Commercial | Other Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract	3		3
Commercial | Asset-based
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	0	4	1	4
Pre-Modification Outstanding Recorded Investment	$ 0	$ 28,947	$ 620	$ 28,947
Post-Modification Outstanding Recorded Investment	$ 0	$ 33,947	$ 620	$ 33,947
Commercial | Venture Capital Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	1	5	11	9
Pre-Modification Outstanding Recorded Investment	$ 0	$ 23,501	$ 16,076	$ 28,737
Post-Modification Outstanding Recorded Investment	$ 0	$ 23,501	$ 16,214	$ 28,737
Commercial | Other Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	3	5	14	9
Pre-Modification Outstanding Recorded Investment	$ 99	$ 1,487	$ 792	$ 13,301
Post-Modification Outstanding Recorded Investment	$ 99	$ 1,115	$ 792	$ 12,929
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract			0	1
Pre-Modification Outstanding Recorded Investment			$ 0	$ 27
Post-Modification Outstanding Recorded Investment			$ 0	$ 27

Loans and Leases (Details 7)

Loans and Leases (Details 7) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Direct Financing Lease, Lease Income [Abstract]
Interest income on net investments in leases	$ 2,648	$ 8,674
Direct Financing Lease, Net Investment in Leases [Abstract]
Lease payments receivable	166,692
Unguaranteed residual assets	21,315
Deferred fees and other	747
Aggregate net investment in leases	188,754
Sales-type and Direct Financing Leases, Lease Receivable, Rolling Maturity [Abstract]
2019	17,353
2020	72,465
2021	51,242
2022	19,819
2023	11,735
Thereafter	9,105
Total undiscounted cash flows	181,719
Less: Unearned income	(15,027)
Present value of lease payments	$ 166,692

Loans and Leases (Details 8)

Loans and Leases (Details 8) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 135,037	$ 132,139	$ 132,472
Charge-offs	(6,501)	(3,308)	(27,603)
Recoveries	2,016	1,589	11,683
Allowance for Loan and Lease Losses, Net charge-offs	(4,485)	(1,719)	(15,920)
Provision	8,000	11,500	22,000
Balance, end of period	138,552	141,920	138,552	$ 141,920
The ending balance of the loan and lease portfolio is composed of loans and leases:
Ending balance of loans and leases	18,735,543		18,735,543		$ 17,957,713
Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	135,037	132,139	132,472	139,456
Charge-offs	(6,501)	(3,308)	(27,603)	(33,696)
Recoveries	2,016	1,589	11,683	9,886
Allowance for Loan and Lease Losses, Net charge-offs				(23,810)
Provision	8,000	11,500	22,000	26,274
Balance, end of period	138,552	141,920	138,552	141,920
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	9,330	20,859	9,330	20,859
Collectively evaluated for impairment	129,222	121,061	129,222	121,061
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	110,620	130,011	110,620	130,011
Collectively evaluated for impairment	18,624,923	17,100,135	18,624,923	17,100,135
Ending balance of loans and leases	18,735,543	17,230,146	18,735,543	17,230,146	17,957,713
Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period				6,400
Real Estate Mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for Loan and Lease Losses, Net charge-offs	(25)	(504)	(372)	(6,072)
The ending balance of the loan and lease portfolio is composed of loans and leases:
Ending balance of loans and leases	7,896,924		7,896,924		7,918,141
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	46,826	45,467	46,021	40,051
Charge-offs	(120)	(726)	(850)	(8,071)
Recoveries	95	222	478	1,999
Provision	(1,655)	1,394	(503)	12,378
Balance, end of period	45,146	46,357	45,146	46,357
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	248	496	248	496
Collectively evaluated for impairment	44,898	45,861	44,898	45,861
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	29,808	44,985	29,808	44,985
Collectively evaluated for impairment	7,867,116	7,633,675	7,867,116	7,633,675
Ending balance of loans and leases	7,896,924	7,678,660	7,896,924	7,678,660	7,918,141
Real Estate Construction and Land
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for Loan and Lease Losses, Net charge-offs	0	23	0	49
The ending balance of the loan and lease portfolio is composed of loans and leases:
Ending balance of loans and leases	2,551,474		2,551,474		2,233,656
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	26,378	26,210	28,209	13,055
Charge-offs	0	0	0	0
Recoveries	0	23	0	49
Provision	683	(47)	(1,148)	13,082
Balance, end of period	27,061	26,186	27,061	26,186
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	27,061	26,186	27,061	26,186
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	5,357	5,533	5,357	5,533
Collectively evaluated for impairment	2,546,117	1,995,424	2,546,117	1,995,424
Ending balance of loans and leases	2,551,474	2,000,957	2,551,474	2,000,957	2,233,656
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for Loan and Lease Losses, Net charge-offs	(4,123)	(1,069)	(14,867)	(17,619)
The ending balance of the loan and lease portfolio is composed of loans and leases:
Ending balance of loans and leases	7,878,557		7,878,557		7,404,595
Commercial | Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	59,401	58,806	56,360	84,022
Charge-offs	(6,021)	(2,372)	(25,951)	(25,321)
Recoveries	1,898	1,303	11,084	7,702
Provision	8,907	9,907	22,692	1,241
Balance, end of period	64,185	67,644	64,185	67,644
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	9,082	20,363	9,082	20,363
Collectively evaluated for impairment	55,103	47,281	55,103	47,281
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	75,455	79,493	75,455	79,493
Collectively evaluated for impairment	7,803,102	7,072,565	7,803,102	7,072,565
Ending balance of loans and leases	7,878,557	7,152,058	7,878,557	7,152,058	7,404,595
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for Loan and Lease Losses, Net charge-offs	(337)	(169)	(681)	(168)
The ending balance of the loan and lease portfolio is composed of loans and leases:
Ending balance of loans and leases					401,321
Consumer | Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,432	1,656	1,882	2,328
Charge-offs	(360)	(210)	(802)	(304)
Recoveries	23	41	121	136
Provision	65	246	959	(427)
Balance, end of period	2,160	1,733	2,160	1,733
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	2,160	1,733	2,160	1,733
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	408,588	398,471	408,588	398,471
Ending balance of loans and leases	408,588	398,471	408,588	398,471	$ 401,321
Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for Loan and Lease Losses, Net charge-offs	$ (4,485)	$ (1,719)	$ (15,920)	$ (23,810)

Loans and Leases (Details 9)

Loans and Leases (Details 9) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, beginning of period	$ 135,037		$ 132,139	$ 132,472
Reserve for Unfunded Loan Commitments, Balance, beginning of period	34,861		35,361	36,861	$ 28,635
Allowance for Credit Losses, Balance, beginning of period	169,898		167,500	169,333
Allowance for Loan and Lease Losses, Charge-offs	(6,501)		(3,308)	(27,603)
Reserve for Unfunded Loan Commitments, Charge-offs	0		0	0	0
Allowance for Credit Losses, Charge-offs	(6,501)		(3,308)	(27,603)
Allowance for Loan and Lease Loss, Recoveries	2,016		1,589	11,683
Reserve for Unfunded Loan Commitments, Recoveries	0		0	0	0
Allowance for Credit Losses, Recoveries	2,016		1,589	11,683
Allowance for Loan and Lease Losses, Net charge-offs	(4,485)		(1,719)	(15,920)
Reserve for Unfunded Loan Commitments, Net charge-offs	0		0	0	0
Allowance For Credit Losses, Net charge-offs	(4,485)		(1,719)	(15,920)
Allowance for Loan and Lease Losses, Provision (negative provision)	8,000		11,500	22,000
Reserve for Unfunded Commitments, Provision (negative provision)	1,000		0	3,000	(6,726)
Allowance for Credit Losses, Provision (negative provision)	7,000	$ 8,000	11,500	19,000	33,000
Balance, end of period	138,552	135,037	141,920	138,552	141,920
Reserve for Unfunded Loan Commitments, Balance, end of period	33,861	34,861	35,361	33,861	35,361
Allowance for Credit Losses, Balance, end of period	172,413	169,898	177,281	172,413	177,281
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, beginning of period	135,037		132,139	132,472	139,456
Allowance for Credit Losses, Balance, beginning of period					168,091
Allowance for Loan and Lease Losses, Charge-offs	(6,501)		(3,308)	(27,603)	(33,696)
Allowance for Credit Losses, Charge-offs					(33,696)
Allowance for Loan and Lease Loss, Recoveries	2,016		1,589	11,683	9,886
Allowance for Credit Losses, Recoveries					9,886
Allowance for Loan and Lease Losses, Net charge-offs					(23,810)
Allowance For Credit Losses, Net charge-offs					(23,810)
Allowance for Loan and Lease Losses, Provision (negative provision)	8,000		11,500	22,000	26,274
Allowance for Credit Losses, Provision (negative provision)					33,000
Balance, end of period	$ 138,552	$ 135,037	141,920	$ 138,552	141,920
Allowance for Credit Losses, Balance, end of period			$ 177,281		177,281
Purchased Credit Impaired Loans and Leases
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, beginning of period					$ 6,400

Loans and Leases (Details Textu

Loans and Leases (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)contract	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)contract	Sep. 30, 2018USD ($)contract	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 594,000	$ 57,736,000	$ 18,805,000	$ 76,517,000
Post-Modification Outstanding Recorded Investment	594,000	60,187,000	18,906,000	$ 77,909,000
Nonaccrual loans and leases	99,113,000		99,113,000		$ 79,333,000
Receivable, 90 or more days past due	10,917,000		10,917,000		10,700,000
Receivable, 30-89 days past due	17,625,000		17,625,000		6,600,000
Financing receivable, nonaccrual status, current					62,000,000
Credit Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	53,400,000		$ 53,400,000
Percentage of nonaccrual loans and leases			54.00%
Non Purchased Credit Impaired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases					79,333,000
Receivable, 90 or more days past due					10,723,000
Receivable, 30-89 days past due					17,085,000
Nonaccrual
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivable, 90 or more days past due	10,900,000		$ 10,900,000
Receivable, 30-89 days past due	6,300,000		6,300,000
Financing receivable, nonaccrual status, current	81,900,000		81,900,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | contract				0
Nonaccrual loans and leases	75,700,000		75,700,000
Receivable, 90 or more days past due	2,903,000		2,903,000
Receivable, 30-89 days past due	6,790,000		6,790,000
Commercial | Non Purchased Credit Impaired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases					60,003,000
Receivable, 90 or more days past due					1,931,000
Receivable, 30-89 days past due					9,933,000
Commercial | Venture Capital Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pre-Modification Outstanding Recorded Investment	0	23,501,000	16,076,000	$ 28,737,000
Post-Modification Outstanding Recorded Investment	0	23,501,000	16,214,000	28,737,000
Nonaccrual loans and leases	20,131,000		20,131,000
Receivable, 90 or more days past due	0		0
Receivable, 30-89 days past due	0		0
Commercial | Venture Capital Loans | Non Purchased Credit Impaired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases					20,299,000
Receivable, 90 or more days past due					0
Receivable, 30-89 days past due					4,705,000
Commercial | Other Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pre-Modification Outstanding Recorded Investment	99,000	1,487,000	792,000	13,301,000
Post-Modification Outstanding Recorded Investment	99,000	1,115,000	792,000	12,929,000
Nonaccrual loans and leases	22,554,000		22,554,000
Receivable, 90 or more days past due	2,241,000		2,241,000
Receivable, 30-89 days past due	6,742,000		6,742,000
Commercial | Other Commercial | Non Purchased Credit Impaired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases					7,380,000
Receivable, 90 or more days past due					1,285,000
Receivable, 30-89 days past due					5,181,000
Commercial | Asset-based
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pre-Modification Outstanding Recorded Investment	0	28,947,000	620,000	28,947,000
Post-Modification Outstanding Recorded Investment	0	$ 33,947,000	620,000	$ 33,947,000
Nonaccrual loans and leases	33,015,000		33,015,000
Receivable, 90 or more days past due	662,000		662,000
Receivable, 30-89 days past due	$ 48,000		$ 48,000
Commercial | Asset-based | Non Purchased Credit Impaired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases					32,324,000
Receivable, 90 or more days past due					646,000
Receivable, 30-89 days past due					$ 47,000
Equipment Finance Commercial Financing Receivable | Venture Capital Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | contract			2
Financing Receivable, Troubled Debt Restructuring, Subsequent Default			$ 441,000
Other Commercial | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | contract	3		3
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 133,000		$ 133,000
Other Residential | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | contract	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 254,000

Foreclosed Assets (Details)

Foreclosed Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Total other real estate owned, net	$ 1,366	$ 4,235
Other foreclosed assets	0	1,064
Foreclosed assets, net	1,366	5,299
Commercial real estate
Total other real estate owned, net	199	2,004
Single-family residence
Total other real estate owned, net	948	953
Construction and land development
Total other real estate owned, net	219	219
Multi‑family
Total other real estate owned, net	$ 0	$ 1,059

Foreclosed Assets (Details 1)

Foreclosed Assets (Details 1) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract]
Balance, beginning of period	$ 5,299
Loans transferred to foreclosed assets	37	$ 3,235
Provision for losses	(54)
Reductions related to sales	(3,916)
Balance, end of period	$ 1,366

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Finite-lived Intangible Assets [Roll Forward]
CDI and CRI Balance, beginning of period	$ 119,497	$ 119,497	$ 119,497	$ 119,497	$ 119,497
Fully amortized portion	(1,924)	0	0	(1,924)	0
CDI and CRI Balance, end of period	117,573	119,497	119,497	117,573	119,497
Accumulated Amortization, beginning of period	(72,117)	(67,247)	(51,804)	(62,377)	(39,871)
Amortization	(4,833)	(4,870)	(5,587)	(14,573)	(17,520)
Fully amortized portion	1,924	0	0	1,924	0
Accumulated Amortization, end of period	(75,026)	(72,117)	(57,391)	(75,026)	(57,391)
Net CDI and CRI, end of period	42,547	47,380	62,106	42,547	62,106
CDI and CRI [Member]
Finite-lived Intangible Assets [Roll Forward]
Fully amortized portion	(1,924)	0	0	(1,924)	0
Fully amortized portion	$ 1,924	$ 0	$ 0	$ 1,924	$ 0

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization	$ 4,833	$ 4,870	$ 5,587	$ 14,573	$ 17,520
Aggregate amortization expense 2019	14,800			14,800
Aggregate amortization expense 2020	10,800			10,800
Aggregate amortization expense 2021	7,400			7,400
Aggregate amortization expense 2022	3,800			3,800
Aggregate amortization expense 2023	$ 1,700			$ 1,700
Scenario, Forecast
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization						$ 18,700

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Other Assets [Abstract]
Cash Surrender Value of Life Insurance	$ 197,887	$ 194,897
Finance Lease, Right-of-Use Asset	134,122	0
Interest and fees receivable income	80,955	88,754
Low Income Housing Tax Credit - LIHTC	67,367	59,507
Equity Method Investments, Other Asset Investments	62,269	59,062
Income Taxes Receivable	17,281	39,096
Prepaid Expense	18,351	18,006
Equity Investments Without Readily Determinable Fair Value	14,828	14,758
Equity Warrants	3,532	4,793
Equity Investments With Readily Determinable Fair Value	4,715	4,891
Other Assets, Miscellaneous	19,752	39,132
Other Assets	$ 621,059	$ 522,896

Other Assets (Details Textual)

Other Assets (Details Textual) - USD ($)	3 Months Ended	9 Months Ended	18 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Other Investment Not Readily Marketable [Line Items]
Equity Investments Without Readily Determinable Fair Value	$ 14,828,000	$ 14,828,000		$ 14,758,000
Equity Investments Without Readily Determinable Fair Value Other than Non-temporary Impairments	0
Equity Method Investment, Amount Sold		0	$ 286,000
Equity Method Investment, Other than Temporary Impairment			$ 278,000
Community Reinvestment Act Investments [Member]
Other Investment Not Readily Marketable [Line Items]
Equity Investments Without Readily Determinable Fair Value	$ 15,700,000	$ 15,700,000		$ 12,500,000

Leases - Narrative (Details)

Leases - Narrative (Details)	9 Months Ended
	Sep. 30, 2019bank_branchother_office
Lessee, Lease, Description [Line Items]
Number of full-service branch offices related to operating leases | bank_branch	75
Number of other offices related to operating leases | other_office	76
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Lease renewal term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	27 years
Lease renewal term	10 years

Leases - Schedule of Occupancy

Leases - Schedule of Occupancy Expense and Supplemental Cash Flow Information Related to Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Lease, Cost [Abstract]
Fixed costs	$ 8,347	$ 25,183
Variable costs	7	77
Short-term lease costs	126	849
Sublease income	(1,010)	(3,190)
Net lease expense	$ 7,470	22,919
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases		24,674
ROU assets obtained in exchange for lease obligations:
Operating leases		$ 172,189

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Balance Sheet Information Related to Operating Leases (Details) $ in Thousands	Sep. 30, 2019USD ($)
Operating leases:
Operating Lease, Right-of-Use Asset	$ 134,122
Operating Lease, Liability	$ 149,185
Weighted average remaining lease term (in years)	4 years 9 months 18 days
Weighted average discount rate	2.79%

Leases - Schedule of Maturities

Leases - Schedule of Maturities of Operating Leases (Details) $ in Thousands	Sep. 30, 2019USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019	$ 8,303
2020	32,345
2021	30,090
2022	24,304
2023	21,472
Thereafter	47,582
Total operating lease liabilities	164,096
Less: Imputed interest	(14,911)
Present value of operating lease liabilities	$ 149,185

Leases - Schedule of Payments t

Leases - Schedule of Payments to be Received on Operating Leases (Details) $ in Thousands	Sep. 30, 2019USD ($)
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
2019	$ 8,727
2020	35,447
2021	31,743
2022	25,199
2023	22,096
Thereafter	52,717
Total undiscounted cash flows	$ 175,929

Borrowings and Subordinated D_3

Borrowings and Subordinated Debentures (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Borrowings	$ 1,253,031	$ 1,371,114
Rate	2.06%	2.56%
Non‑recourse debt
Debt Instrument [Line Items]
Amount	$ 31	$ 114
Rate	7.50%	7.50%
AFX borrowings
Debt Instrument [Line Items]
Amount	$ 230,000	$ 190,000
Rate	1.92%	2.56%
Federal Home Loan Bank of San Francisco | FHLB secured advances
Debt Instrument [Line Items]
Amount	$ 882,000	$ 1,040,000
Rate	2.12%	2.56%
Federal Home Loan Bank of San Francisco | FHLB unsecured overnight advance
Debt Instrument [Line Items]
Amount	$ 141,000	$ 141,000
Rate	1.95%	2.53%

Borrowings and Subordinated D_4

Borrowings and Subordinated Debentures (Details 1) $ in Thousands, € in Millions	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019EUR (€)	Dec. 31, 2018USD ($)
Subordinated Borrowing [Line Items]
Rate	2.06%	2.06%	2.56%
Net subordinated debentures	$ 456,145		$ 453,846
Trust Preferred Securities Two Thousand Six Series Three
Subordinated Borrowing [Line Items]
Denomination value | €		€ 25.8
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust V Due September 2033
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	3.10%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust VI Due September 2033
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	3.05%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust CII Due September 2033
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	2.95%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust VII Due April 2034
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	2.75%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust CIII Due September 2035
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	1.69%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust FCCI Due March 2037
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	1.60%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust FCBI Due December 2035
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	1.55%
London Interbank Offered Rate (LIBOR) | Trust Preferred Securities Two Thousand Five Series One
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	1.95%
London Interbank Offered Rate (LIBOR) | Trust Preferred Securities Two Thousand Five Series Two
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	1.95%
London Interbank Offered Rate (LIBOR) | Two Thousand Six One Term Debt Securitization
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	1.95%
London Interbank Offered Rate (LIBOR) | Two Thousand Six Two Term Debt Securitization
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	1.95%
London Interbank Offered Rate (LIBOR) | Trust Preferred Securities Two Thousand Six Series Four
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	1.95%
London Interbank Offered Rate (LIBOR) | Trust Preferred Securities Two Thousand Six Series Five
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	1.95%
London Interbank Offered Rate (LIBOR) | Two Thousand Seven One Term Debt Securitization
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	1.95%
Euribor Rate | Trust Preferred Securities Two Thousand Six Series Three
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)	2.05%
Subordinated Debentures
Subordinated Borrowing [Line Items]
Amount	$ 539,880		$ 541,344
Rate	4.16%	4.16%	4.51%
Unamortized discount	$ (83,735)		$ (87,498)
Subordinated Debentures | Subordinated Debt Trust V Due September 2033
Subordinated Borrowing [Line Items]
Amount	$ 10,310		$ 10,310
Rate	5.24%	5.24%	5.89%
Date Issued	Aug. 15, 2003
Maturity Date	Sep. 17, 2033
Description of variable rate basis	3-month LIBOR + 3.10
Subordinated Debentures | Subordinated Debt Trust VI Due September 2033
Subordinated Borrowing [Line Items]
Amount	$ 10,310		$ 10,310
Rate	5.17%	5.17%	5.84%
Date Issued	Sep. 3, 2003
Maturity Date	Sep. 15, 2033
Description of variable rate basis	3-month LIBOR + 3.05
Subordinated Debentures | Subordinated Debt Trust CII Due September 2033
Subordinated Borrowing [Line Items]
Amount	$ 5,155		$ 5,155
Rate	5.09%	5.09%	5.74%
Date Issued	Sep. 17, 2003
Maturity Date	Sep. 17, 2033
Description of variable rate basis	3-month LIBOR + 2.95
Subordinated Debentures | Subordinated Debt Trust VII Due April 2034
Subordinated Borrowing [Line Items]
Amount	$ 61,856		$ 61,856
Rate	5.02%	5.02%	5.27%
Date Issued	Feb. 5, 2004
Maturity Date	Apr. 23, 2034
Description of variable rate basis	3-month LIBOR + 2.75
Subordinated Debentures | Subordinated Debt Trust CIII Due September 2035
Subordinated Borrowing [Line Items]
Amount	$ 20,619		$ 20,619
Rate	3.81%	3.81%	4.48%
Date Issued	Aug. 15, 2005
Maturity Date	Sep. 15, 2035
Description of variable rate basis	3-month LIBOR + 1.69
Subordinated Debentures | Subordinated Debt Trust FCCI Due March 2037
Subordinated Borrowing [Line Items]
Amount	$ 16,495		$ 16,495
Rate	3.72%	3.72%	4.39%
Date Issued	Jan. 25, 2007
Maturity Date	Mar. 15, 2037
Description of variable rate basis	3-month LIBOR + 1.60
Subordinated Debentures | Subordinated Debt Trust FCBI Due December 2035
Subordinated Borrowing [Line Items]
Amount	$ 10,310		$ 10,310
Rate	3.67%	3.67%	4.34%
Date Issued	Sep. 30, 2005
Maturity Date	Dec. 15, 2035
Description of variable rate basis	3-month LIBOR + 1.55
Subordinated Debentures | Trust Preferred Securities Two Thousand Five Series One
Subordinated Borrowing [Line Items]
Amount	$ 82,475		$ 82,475
Rate	4.07%	4.07%	4.74%
Date Issued	Nov. 21, 2005
Maturity Date	Dec. 15, 2035
Description of variable rate basis	3-month LIBOR + 1.95
Subordinated Debentures | Trust Preferred Securities Two Thousand Five Series Two
Subordinated Borrowing [Line Items]
Amount	$ 128,866		$ 128,866
Rate	4.22%	4.22%	4.47%
Date Issued	Dec. 14, 2005
Maturity Date	Jan. 30, 2036
Description of variable rate basis	3-month LIBOR + 1.95
Subordinated Debentures | Two Thousand Six One Term Debt Securitization
Subordinated Borrowing [Line Items]
Amount	$ 51,545		$ 51,545
Rate	4.22%	4.22%	4.47%
Date Issued	Feb. 22, 2006
Maturity Date	Apr. 30, 2036
Description of variable rate basis	3-month LIBOR + 1.95
Subordinated Debentures | Two Thousand Six Two Term Debt Securitization
Subordinated Borrowing [Line Items]
Amount	$ 51,550		$ 51,550
Rate	4.22%	4.22%	4.47%
Date Issued	Sep. 27, 2006
Maturity Date	Oct. 30, 2036
Description of variable rate basis	3-month LIBOR + 1.95
Subordinated Debentures | Trust Preferred Securities Two Thousand Six Series Three
Subordinated Borrowing [Line Items]
Amount	$ 28,092		$ 29,556
Rate	1.68%	1.68%	1.73%
Date Issued	Sep. 29, 2006
Maturity Date	Oct. 30, 2036
Description of variable rate basis	3-month EURIBOR + 2.05
Subordinated Debentures | Trust Preferred Securities Two Thousand Six Series Four
Subordinated Borrowing [Line Items]
Amount	$ 16,470		$ 16,470
Rate	4.22%	4.22%	4.47%
Date Issued	Dec. 5, 2006
Maturity Date	Jan. 30, 2037
Description of variable rate basis	3-month LIBOR + 1.95
Subordinated Debentures | Trust Preferred Securities Two Thousand Six Series Five
Subordinated Borrowing [Line Items]
Amount	$ 6,650		$ 6,650
Rate	4.22%	4.22%	4.47%
Date Issued	Dec. 19, 2006
Maturity Date	Jan. 30, 2037
Description of variable rate basis	3-month LIBOR + 1.95
Subordinated Debentures | Two Thousand Seven One Term Debt Securitization
Subordinated Borrowing [Line Items]
Amount	$ 39,177		$ 39,177
Rate	4.22%	4.22%	4.47%
Date Issued	Jun. 13, 2007
Maturity Date	Jul. 30, 2037
Description of variable rate basis	3-month LIBOR + 1.95

Borrowings and Subordinated D_5

Borrowings and Subordinated Debentures (Details Textual) - USD ($)	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Non‑recourse debt
Debt Instrument [Line Items]
Weighted average remaining maturity period	3 months 18 days
Unused Lines of Credit
Debt Instrument [Line Items]
Amount outstanding	$ 0	$ 0
Current borrowing capacity	180,000,000
Unused commitment fees	0
AFX borrowings
Debt Instrument [Line Items]
Amount outstanding	230,000,000	190,000,000
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Loans pledged as collateral	2,800,000,000
Amount outstanding	0	0
Federal Reserve Bank Advances | FHLB secured advances
Debt Instrument [Line Items]
Borrowing capacity description	2,100,000,000
Federal Home Loan Bank of San Francisco
Debt Instrument [Line Items]
Loans pledged as collateral	6,100,000,000
Federal Home Loan Bank of San Francisco | FHLB secured advances
Debt Instrument [Line Items]
Borrowing capacity description	4,300,000,000
Current outstanding	882,000,000	1,040,000,000
Federal Home Loan Bank of San Francisco | FHLB unsecured overnight advance
Debt Instrument [Line Items]
Current outstanding	141,000,000	141,000,000
Federal Home Loan Bank of San Francisco | Unused Lines of Credit
Debt Instrument [Line Items]
Borrowing capacity description	141,000,000
Maturity Overnight [Member] | AFX borrowings
Debt Instrument [Line Items]
Amount outstanding	230,000,000
Two-Month Borrowing [Member] | Federal Home Loan Bank of San Francisco
Debt Instrument [Line Items]
Current outstanding	300,000,000
Maturity Overnight [Member] | Federal Home Loan Bank of San Francisco
Debt Instrument [Line Items]
Current outstanding	$ 582,000,000	$ 1,000,000,000

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Loans and Leases Commitments To Extend Credit	$ 7,790,796,000	$ 7,528,248,000
Guarantor Obligations, Maximum Exposure, Undiscounted	367,147,000	364,210,000
Commitment To Contribute Capital	116,012,000	101,991,000
Remaining minimum amount committed	50,000	50,000
Unused Commitments to Extend Credit	$ 8,274,005,000	$ 7,994,499,000

Commitments and Contingencies_3

Commitments and Contingencies (Details Textual) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitment To Contribute Capital	$ 116,012,000	$ 101,991,000
Remaining minimum amount committed	$ 50,000	$ 50,000

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	$ 3,817,348	$ 4,009,431
Securities available-for-sale, at fair value	3,817,348	4,009,431
Equity Securities, FV-NI	4,715	4,891
Derivative Liability	1,446	142
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity warrants		4,793
Government agency and government-sponsored enterprise pass through securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	324,929	281,088
Government agency and government-sponsored enterprise collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	1,172,555	632,850
Private label collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	93,868	101,205
Collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	113,874
Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	721,981	1,312,194
Government agency and government-sponsored enterprise commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	1,100,017	1,112,704
US Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	5,203	403,405
Asset-backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	214,151	81,385
SBA asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	49,746	67,047
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	21,024	17,553
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	3,817,348
Equity warrants	3,532	4,793
Other derivative assets	2,297	3,292
Total recurring assets	3,827,892	4,022,407
Derivative liabilities	1,446	142
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	5,203	403,405
Equity warrants	0	0
Other derivative assets	0	0
Equity Securities, FV-NI	4,715	4,891
Total recurring assets	9,918	408,296
Derivative liabilities	0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	3,774,182	3,558,793
Equity warrants	0	0
Other derivative assets	2,297	3,292
Equity Securities, FV-NI	0	0
Total recurring assets	3,776,479	3,562,085
Derivative liabilities	1,446	142
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	37,963	47,233
Equity warrants	3,532	4,793
Other derivative assets	0	0
Equity Securities, FV-NI	0	0
Total recurring assets	41,495	52,026
Derivative liabilities	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise pass through securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	324,929	281,088
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise pass through securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise pass through securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	324,929	281,088
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise pass through securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	1,172,555	632,850
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	1,172,555	632,850
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Private label collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	93,868	101,205
Fair Value, Measurements, Recurring | Private label collateralized mortgage obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Private label collateralized mortgage obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	87,273	93,917
Fair Value, Measurements, Recurring | Private label collateralized mortgage obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	6,595	7,288
Fair Value, Measurements, Recurring | Collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	113,874
Fair Value, Measurements, Recurring | Collateralized loan obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0
Fair Value, Measurements, Recurring | Collateralized loan obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	113,874
Fair Value, Measurements, Recurring | Collateralized loan obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0
Fair Value, Measurements, Recurring | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	721,981	1,312,194
Fair Value, Measurements, Recurring | Municipal securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Municipal securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	721,981	1,312,194
Fair Value, Measurements, Recurring | Municipal securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	1,100,017	1,112,704
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise commercial mortgage-backed securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise commercial mortgage-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	1,100,017	1,112,704
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise commercial mortgage-backed securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | US Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	5,203	403,405
Fair Value, Measurements, Recurring | US Treasury Securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	5,203	403,405
Fair Value, Measurements, Recurring | US Treasury Securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | US Treasury Securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Asset-backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	214,151	81,385
Fair Value, Measurements, Recurring | Asset-backed Securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Asset-backed Securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	182,783	41,440
Fair Value, Measurements, Recurring | Asset-backed Securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	31,368	39,945
Fair Value, Measurements, Recurring | SBA asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	49,746	67,047
Fair Value, Measurements, Recurring | SBA asset-backed securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | SBA asset-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	49,746	67,047
Fair Value, Measurements, Recurring | SBA asset-backed securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	21,024	17,553
Fair Value, Measurements, Recurring | Corporate debt securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Corporate debt securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	21,024	17,553
Fair Value, Measurements, Recurring | Corporate debt securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	$ 0	$ 0

Fair Value Measurements (Deta_2

Fair Value Measurements (Details 1) - Level 3 - Fair Value, Measurements, Recurring	9 Months Ended
	Sep. 30, 2019
Measurement Input, Prepayment Rate | Minimum | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.029
Measurement Input, Prepayment Rate | Minimum | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.029
Measurement Input, Prepayment Rate | Minimum | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.120
Measurement Input, Prepayment Rate | Maximum | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.182
Measurement Input, Prepayment Rate | Maximum | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.1820
Measurement Input, Prepayment Rate | Maximum | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.150
Measurement Input, Prepayment Rate | Weighted Average | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.114
Measurement Input, Prepayment Rate | Weighted Average | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.114
Measurement Input, Prepayment Rate | Weighted Average | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.137
Measurement Input, Default Rate | Minimum | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0
Measurement Input, Default Rate | Minimum | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0
Measurement Input, Default Rate | Minimum | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.020
Measurement Input, Default Rate | Maximum | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.111
Measurement Input, Default Rate | Maximum | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.1110
Measurement Input, Default Rate | Maximum | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.02
Measurement Input, Default Rate | Weighted Average | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.018
Measurement Input, Default Rate | Weighted Average | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.018
Measurement Input, Default Rate | Weighted Average | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.020
Measurement Input, Loss Severity | Minimum | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.241
Measurement Input, Loss Severity | Minimum | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.241
Measurement Input, Loss Severity | Minimum | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.600
Measurement Input, Loss Severity | Maximum | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	1.176
Measurement Input, Loss Severity | Maximum | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	1.1760
Measurement Input, Loss Severity | Maximum | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.60
Measurement Input, Loss Severity | Weighted Average | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.585
Measurement Input, Loss Severity | Weighted Average | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.585
Measurement Input, Loss Severity | Weighted Average | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.600
Measurement Input, Discount Rate | Minimum | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.025
Measurement Input, Discount Rate | Minimum | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.025
Measurement Input, Discount Rate | Minimum | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.032
Measurement Input, Discount Rate | Maximum | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.093
Measurement Input, Discount Rate | Maximum | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.0920
Measurement Input, Discount Rate | Maximum | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.052
Measurement Input, Discount Rate | Weighted Average | Covered Private Label Collateralized Mortgage Obligations Member [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.063
Measurement Input, Discount Rate | Weighted Average | Private label collateralized mortgage obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Private Label Collateralized Mortgage Obligations, Measurement Input	0.063
Measurement Input, Discount Rate | Weighted Average | Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-Backed Securities, Measurement Input	0.043

Fair Value Measurements (Deta_3

Fair Value Measurements (Details 2) - Weighted Average - Warrant - Fair Value, Measurements, Recurring - Level 3	9 Months Ended
	Sep. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Warrants, Measurement Input, Remaining Life	3 years 3 months 7 days
Measurement Input, Price Volatility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Volatility	0.170
Measurement Input, Risk Free Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Volatility	0.016

Fair Value Measurements (Deta_4

Fair Value Measurements (Details 3)	9 Months Ended
	Sep. 30, 2019USD ($)
Level 3
Level 3 CMO [Roll Forward]
Equity warrants, Balance, beginning of period	$ 4,793,000
Total included in earnings, Equity Warrants	7,429,000
Total included in other comprehensive income	0
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants	226,000
Sales, Equity Warrants	(8,808,000)
Net settlements, Equity Warrants	0
Fair Value, Measurements, Recurring
Level 3 CMO [Roll Forward]
Equity warrants, Balance, beginning of period	4,793,000
Equity warrants, Balance, end of period	3,532,000
Fair Value, Measurements, Recurring | Level 3
Level 3 CMO [Roll Forward]
Equity warrants, Balance, beginning of period	4,793,000
Equity warrants, Balance, end of period	3,532,000
Private Label CMOs | Fair Value, Measurements, Recurring | Level 3
Level 3 CMO [Roll Forward]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	7,288,000
Total included in earnings	340,000
Total included in other comprehensive income	(160,000)
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	0
Net settlements	(873,000)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	6,595,000
Asset-backed | Fair Value, Measurements, Recurring | Level 3
Level 3 CMO [Roll Forward]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	39,945,000
Total included in earnings	(66,000)
Total included in other comprehensive income	646,000
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	0
Net settlements	(9,157,000)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	31,368,000
Private label collateralized mortgage obligations
Level 3 CMO [Roll Forward]
Fair value transfers of assets measured on a recurring basis	0
Asset-backed Securities
Level 3 CMO [Roll Forward]
Fair value transfers of assets measured on a recurring basis	0
Warrant
Level 3 CMO [Roll Forward]
Fair value transfers of assets measured on a recurring basis	$ 108,000

Fair Value Measurements (Deta_5

Fair Value Measurements (Details 4) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	$ 29,680	$ 25,568
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	2,962	2,936
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	26,718	22,632
Non Purchased Credit Impaired Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	29,552	24,432
Non Purchased Credit Impaired Loans and Leases | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	0	0
Non Purchased Credit Impaired Loans and Leases | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	2,962	1,800
Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	26,590	22,632
Other real estate and foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	128	1,136
Other real estate and foreclosed assets | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	0	0
Other real estate and foreclosed assets | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	0	1,136
Third party appraisals | Other real estate and foreclosed assets | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	$ 128	$ 0

Fair Value Measurements (Deta_6

Fair Value Measurements (Details 5) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses	$ 8,393	$ 14,347	$ 10,145	$ 31,416
Non Purchased Credit Impaired Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses	8,339	14,347	10,091	31,351
Other real estate and foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses	$ 54	$ 0	$ 54	$ 65

Fair Value Measurements (Deta_7

Fair Value Measurements (Details 6) - Non Purchased Credit Impaired Loans and Leases - Fair Value, Measurements, Nonrecurring - Level 3	9 Months Ended
	Sep. 30, 2019
Weighted Average | Discount Rates | Third party appraisals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.3191
Measurement Input, Discount Rate | Minimum | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0375
Measurement Input, Discount Rate | Minimum | Discount Rates | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0375
Measurement Input, Discount Rate | Maximum | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0877
Measurement Input, Discount Rate | Maximum | Discount Rates | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0877
Measurement Input, Discount Rate | Weighted Average | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0758
Measurement Input, Discount Rate | Weighted Average | Discount Rates | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0758

Fair Value Measurements (Deta_8

Fair Value Measurements (Details 7) - Fair Value, Measurements, Nonrecurring $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 29,680	$ 25,568
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	26,718	22,632
Non Purchased Credit Impaired Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	29,552	24,432
Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	26,590	$ 22,632
Discount Rates | Discounted Cash Flow | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	21,543
Discount Rates | Third party appraisals | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 128
Discount Rates | Weighted Average | Third party appraisals | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.3191
No Discounts | Third party appraisals | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 5,047
Measurement Input, Discount Rate | Minimum | Discounted Cash Flow | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0375
Measurement Input, Discount Rate | Maximum | Discounted Cash Flow | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0877
Measurement Input, Discount Rate | Weighted Average | Discounted Cash Flow | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0758
Measurement Input, Discount Rate | Discount Rates | Minimum | Discounted Cash Flow | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0375
Measurement Input, Discount Rate | Discount Rates | Maximum | Discounted Cash Flow | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0877
Measurement Input, Discount Rate | Discount Rates | Weighted Average | Discounted Cash Flow | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0758

Fair Value Measurements (Deta_9

Fair Value Measurements (Details 8) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	$ 252,596	$ 175,830
Interest-earning deposits in financial institutions	483,405	209,937
Securities available-for-sale, Carrying Amount	3,817,348	4,009,431
Investment in FHLB stock, Carrying Amount	26,865	32,103
Investment in FHLB stock, Fair Value	26,865	32,103
Loans and leases, net	18,596,991	17,825,241
Loans and leases held for investment, net	18,751,105
Warrants and Rights Outstanding		4,793
Other derivative assets, Carrying Amount	2,297	3,292
Equity Securities, FV-NI	4,715	4,891
Demand, interest checking, money market, and savings deposits	16,471,264	16,346,671
Interest-bearing Domestic Deposit, Brokered	479,732	518,192
Time deposits	2,782,207	2,005,638
Time deposits	2,781,713	2,017,137
Borrowings	1,253,031	1,371,114
Borrowings	1,253,031	1,371,114
Subordinated debentures	456,145	453,846
Subordinated debentures	439,895	435,251
Derivative Liability	1,446	142
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	252,596	175,830
Interest-earning deposits in financial institutions	483,405	209,937
Investment in FHLB stock, Fair Value	0	0
Demand, interest checking, money market, and savings deposits	0	0
Interest-bearing Domestic Deposit, Brokered	0	0
Time deposits	0	0
Borrowings	953,000	1,371,000
Subordinated debentures	0	0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0	0
Interest-earning deposits in financial institutions	0	0
Investment in FHLB stock, Fair Value	26,865	32,103
Demand, interest checking, money market, and savings deposits	16,471,264	16,346,671
Interest-bearing Domestic Deposit, Brokered	479,732	518,192
Time deposits	2,781,713	2,017,137
Borrowings	300,031	114
Subordinated debentures	439,895	435,251
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0	0
Interest-earning deposits in financial institutions	0	0
Investment in FHLB stock, Fair Value	0	0
Loans and leases held for investment, net	18,748,143
Equity warrants		4,793
Demand, interest checking, money market, and savings deposits	0	0
Interest-bearing Domestic Deposit, Brokered	0	0
Time deposits	0	0
Borrowings	0	0
Subordinated debentures	0	0
Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity warrants	3,532	4,793
Other derivative assets, Fair Value	2,297	3,292
Derivative liabilities	1,446	142
Fair Value, Measurements, Recurring | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available-for-sale, Carrying Amount	5,203	403,405
Equity warrants	0	0
Other derivative assets, Fair Value	0	0
Equity Securities, FV-NI	4,715	4,891
Derivative liabilities	0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available-for-sale, Carrying Amount	3,774,182	3,558,793
Equity warrants	0	0
Other derivative assets, Fair Value	2,297	3,292
Equity Securities, FV-NI	0	0
Derivative liabilities	1,446	142
Fair Value, Measurements, Recurring | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available-for-sale, Carrying Amount	37,963	47,233
Equity warrants	3,532	4,793
Other derivative assets, Fair Value	0	0
Equity Securities, FV-NI	0	0
Derivative liabilities	0	0
NonPCI and PCI Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and leases held for investment, net		17,013,860
NonPCI and PCI Loans | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and leases held for investment, net	0	0
NonPCI and PCI Loans | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and leases held for investment, net	$ 2,962	1,800
NonPCI and PCI Loans | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and leases held for investment, net		$ 17,012,060

Fair Value Measurements (Det_10

Fair Value Measurements (Details Textual)	9 Months Ended
	Sep. 30, 2019USD ($)
Private label collateralized mortgage obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3	$ 0
Warrant
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3	$ (108,000)

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019		Jun. 30, 2019		Sep. 30, 2018		Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net earnings from continuing operations	$ 110,026		$ 128,125		$ 116,287		$ 350,755	$ 350,298
Less: Earnings allocated to unvested restricted stock	(1,369)	[1]	(1,190)	[1]	(1,428)	[1]	(3,725)	(3,899)
Net earnings allocated to common shares	$ 108,657		$ 126,935		$ 114,859		$ 347,030	$ 346,399
Weighted-average basic shares and unvested restricted stock outstanding (shares)	119,831		120,042		123,657		120,691	125,728
Weighted-average unvested restricted stock outstanding (shares)	(1,622)		(1,462)		(1,537)		(1,480)	(1,473)
Weighted-average basic shares outstanding (shares)	118,209		118,580		122,120		119,211	124,255
Basic net income per share (usd per share)	$ 0.92		$ 1.07		$ 0.94		$ 2.91	$ 2.79
Net earnings from continuing operations allocated to common shares	$ 108,657		$ 126,935		$ 114,859		$ 347,030	$ 346,399
Diluted net income per share (usd per share)	$ 0.92		$ 1.07		$ 0.94		$ 2.91	$ 2.79
[1]	Represents cash dividends paid to holders of unvested restricted stock, net of forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.

Revenue From Contracts With C_3

Revenue From Contracts With Customers (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Total interest income	$ 307,208	$ 314,533	$ 292,642	$ 926,300	$ 858,931
Service charges on deposit accounts	3,525	3,771	3,979	11,026	12,418
Other commissions and fees	10,855	11,590	12,397	33,453	34,429
Leased equipment income	9,615	9,182	9,120	28,079	28,497
Gain on sale of loans and leases	765	326	0	1,091	4,675
Gain on sale of securities	908	22,192	826	25,261	7,390
Other income	7,761	3,832	10,590	16,476	27,700
Total noninterest income	33,429	$ 50,893	36,912	115,386	115,109
Revenues	340,637		329,554	1,041,686	974,040
Service charges on deposit accounts	8,918		9,190	26,940	28,278
Interest Income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0		0	0	0
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	3,525		3,979	11,026	12,418
Other commissions and fees
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	4,965		4,767	14,661	14,519
Leased equipment income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0		0	0	0
Gain on sale of loans
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0		0	0	0
Gain on sale of securities
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0		0	0	0
Other income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	428		444	1,253	1,341
Noninterest Income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	$ 8,918		$ 9,190	$ 26,940	$ 28,278

Revenue From Contracts With C_4

Revenue From Contracts With Customers (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue From Contracts With Customers [Abstract]
Products and services transferred at a point in time	$ 5,046	$ 4,604	$ 14,579	$ 14,195
Products and services transferred over time	3,872	4,586	12,361	14,083
Total revenue from contracts with customers	$ 8,918	$ 9,190	$ 26,940	$ 28,278

Revenue From Contracts With C_5

Revenue From Contracts With Customers (Details 2) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Revenue From Contracts With Customers [Abstract]
Receivables, which are included in Other assets	$ 1,494	$ 1,334
Contract assets, which are included in Other assets	0	0
Contract liabilities, which are included in Accrued interest payable and other liabilities	$ 523	$ 621

Revenue From Contracts With C_6

Revenue From Contracts With Customers (Details Textual)	Dec. 31, 2018USD ($)
Revenue From Contracts With Customers [Abstract]
Contract with Customer, Liability	$ 98,000

Stock-Based Compensation (Detai

Stock-Based Compensation (Details Textual) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted shares (shares)	1,623,494			1,623,494		1,889,872
Vesting period of time-based restricted stock, lower limit					3 years
Vesting period of time-based restricted stock, higher limit					4 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance vesting percentage				0.00%
Performance Target 1 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance vesting percentage				150.00%
Performance Target 2 | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance vesting percentage				200.00%
Restricted Stock | Vesting Based On Service
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 7.3	$ 6.2	$ 8.1	$ 19.3	$ 22.3
Restricted Stock Awards And Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share based compensation expense	$ 59.3			$ 59.3
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted shares (shares)	276,386			276,386
Performance period				3 years
PacWest 2003 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (shares)	4,000,000			4,000,000
Number of shares available for grant (shares)	2,431,235			2,431,235
PacWest 2003 Stock Incentive Plan | Time-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted shares (shares)	1,619,355			1,619,355
PacWest 2003 Stock Incentive Plan | Time-Based Restricted Stock Awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period				3 years
PacWest 2003 Stock Incentive Plan | Time-Based Restricted Stock Awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period				4 years

Subsequent Events (Details Text

Subsequent Events (Details Textuals) - $ / shares	Nov. 01, 2019	Sep. 30, 2019	Sep. 30, 2018
Subsequent Event [Line Items]
Dividends declared per share (usd per share)		$ 0.60	$ 0.50
Subsequent Event | Dividend Declared
Subsequent Event [Line Items]
Dividends declared per share (usd per share)	$ 0.60

Uncategorized Items - a09301910

Label	Element	Value
Retained Earnings [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income	us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetIncome	$ 938,000	[1]
[1]	Impact due to adoption on January 1, 2019 of ASU 2016-02, " Leases (Topic 842)," and the related amendments.