Pacwest Bancorp (PACW) 10-Q 8 Aug 19 2019 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2019	Jul. 30, 2019
Document Information [Line Items]
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	Jun. 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	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		118,205,610
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	Jun. 30, 2019	Dec. 31, 2018
ASSETS:
Cash and due from banks	$ 185,075	$ 175,830
Interest-earning deposits in financial institutions	422,663	209,937
Total cash, cash equivalents, and restricted cash	607,738	385,767
Securities available-for-sale, at fair value	3,807,244	4,009,431
Federal Home Loan Bank stock, at cost	43,146	32,103
Total investment securities	3,850,390	4,041,534
Gross loans and leases held for investment	18,532,740	18,026,365
Deferred fees, net	(59,888)	(68,652)
Allowance for loan and lease losses	(135,037)	(132,472)
Total loans and leases held for investment, net	18,337,815	17,825,241
Equipment leased to others under operating leases	300,668	292,677
Premises and equipment, net	38,162	34,661
Foreclosed assets, net	1,472	5,299
Deferred tax asset, net	0	17,489
Goodwill	2,548,670	2,548,670
Core deposit and customer relationship intangibles, net	47,380	57,120
Other assets	612,119	522,896
Total assets	26,344,414	25,731,354
LIABILITIES AND STOCKHOLDERS' EQUITY
Noninterest-bearing deposits	7,299,213	7,888,915
Interest-bearing deposits	11,506,543	10,981,586
Total deposits	18,805,756	18,870,501
Borrowings	1,913,059	1,371,114
Subordinated debentures	456,112	453,846
Accrued interest payable and other liabilities	317,477	210,305
Total liabilities	21,492,404	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	3,435,679	3,722,723
Retained earnings	1,424,341	1,182,674
Treasury stock, at cost (2,077,845 and 1,889,872 shares at June 30, 2019 and December 31, 2018)	(82,295)	(74,985)
Accumulated other comprehensive income (loss), net	73,066	(6,075)
Total stockholders' equity	4,852,010	4,825,588
Total liabilities and stockholders' equity	$ 26,344,414	$ 25,731,354

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 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			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest expense:
Deposits	$ 38,720	$ 34,235	$ 16,367	$ 72,955	$ 30,185
Borrowings	7,210	7,710	2,649	14,920	3,569
Subordinated debentures	7,705	7,738	7,166	15,443	13,703
Total interest expense	53,635	49,683	26,182	103,318	47,457
Loans and leases	284,236	274,229	260,300	558,465	511,385
Investment securities	28,948	29,680	27,730	58,628	53,868
Deposits in financial institutions	1,349	650	484	1,999	1,036
Total interest income	314,533	304,559	288,514	619,092	566,289
Net interest income	260,898	254,876	262,332	515,774	518,832
Provision for credit losses	8,000	4,000	17,500	12,000	21,500
Net interest income after provision for credit losses	252,898	250,876	244,832	503,774	497,332
Noninterest income:
Other commissions and fees	11,590	11,008	11,767	22,598	22,032
Leased equipment income	9,182	9,282	9,790	18,464	19,377
Service charges on deposit accounts	3,771	3,730	4,265	7,501	8,439
Gain on sale of loans and leases	326	0	106	326	4,675
Gain on sale of securities	22,192	2,161	253	24,353	6,564
Other income	3,832	4,883	13,457	8,715	17,110
Total noninterest income	50,893	31,064	39,638	81,957	78,197
Noninterest expense:
Compensation	68,956	70,845	69,913	139,801	140,936
Occupancy	14,457	14,320	13,575	28,777	26,798
Data processing	6,817	6,925	6,896	13,742	13,555
Leased equipment depreciation	5,558	5,651	5,237	11,209	10,612
Intangible asset amortization	4,870	4,870	5,587	9,740	11,933
Other professional services	4,629	4,513	5,257	9,142	9,696
Insurance and assessments	4,098	4,038	5,330	8,136	11,057
Loan expense	3,451	2,885	3,058	6,336	5,329
Acquisition, integration and reorganization costs	0	618	0	618	0
Foreclosed assets (income) expense, net	(146)	29	(61)	(117)	(183)
Other expense	12,737	11,593	11,657	24,330	24,111
Total noninterest expense	125,427	126,287	126,449	251,714	253,844
Earnings before income taxes	178,364	155,653	158,021	334,017	321,685
Income tax expense	(50,239)	(43,049)	(42,286)	(93,288)	(87,674)
Net earnings	$ 128,125	$ 112,604	$ 115,735	$ 240,729	$ 234,011
Earnings per share:
Net earnings (usd per share)	$ 1.07	$ 0.92	$ 0.92	$ 1.99	$ 1.85
Net earnings (usd per share)	$ 1.07	$ 0.92	$ 0.92	$ 1.99	$ 1.85

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2019		Mar. 31, 2019		Jun. 30, 2018		Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net earnings	$ 128,125		$ 112,604		$ 115,735		$ 240,729	$ 234,011
Other comprehensive income (loss), net of tax:
Unrealized net holding gains (losses) on securities available-for-sale arising during the period	72,168		62,639		(14,325)		134,807	(76,994)
Income tax (expense) benefit related to unrealized holding gains (losses) arising during the period	(20,459)		(17,758)		4,102		(38,217)	22,033
Unrealized net holding gains (losses) on securities available-for-sale, net of tax	51,709		44,881		(10,223)		96,590	(54,961)
Reclassification adjustment for net (gains) losses included in net earnings	(22,192)	[1]	(2,161)	[1]	(253)	[1]	(24,353)	(6,564)
Income tax expense (benefit) related to reclassification adjustment	6,291		613		72		6,904	1,878
Reclassification adjustment for net (gains) losses included in net earnings, net of tax	(15,901)		(1,548)		(181)		(17,449)	(4,686)
Other comprehensive income (loss), net of tax	35,808		43,333		(10,404)		79,141	(59,647)
Comprehensive income	$ 163,933		$ 155,937		$ 105,331		$ 319,870	$ 174,364
[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		234,011
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
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
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]
Cumulative effect of change in accounting principle	[1]	938
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		240,729
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
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
[1]

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net earnings	$ 240,729	$ 234,011
Depreciation and amortization	18,607	17,512
Amortization of net premiums on securities available-for-sale	7,933	14,164
Amortization of intangible assets	9,740	11,933
Amortization of operating lease ROU assets	14,723	0
Provision for credit losses	12,000	21,500
(Gain) loss on sale of foreclosed assets	(320)	35
Provision for losses on foreclosed assets	0	65
Gain on sale of loans and leases	(326)	(4,675)
Gain on sale of premises and equipment	(37)	(8)
Gain on sale of securities	(24,353)	(6,564)
Gain on BOLI death benefit	0	(387)
Unrealized (gain) loss on derivatives and foreign currencies, net	(40)	20
Earned stock compensation	12,529	14,745
Decrease (increase) in deferred income taxes, net	14,714	(1,640)
Decrease in other assets	29,635	53,534
Decrease in accrued interest payable and other liabilities	(55,550)	(47,696)
Net cash provided by operating activities	279,984	306,549
Cash flows from investing activities:
Net increase in loans and leases	(605,228)	(95,306)
Proceeds from sales of loans and leases	80,440	643,261
Proceeds from maturities and paydowns of securities available-for-sale	150,766	157,806
Proceeds from sales of securities available-for-sale	1,410,510	368,775
Purchases of securities available-for-sale	(1,232,214)	(708,167)
Net purchases of Federal Home Loan Bank stock	(11,043)	(5,481)
Proceeds from sales of foreclosed assets	4,184	57
Proceeds from sales of premises and equipment	54	32
Proceeds from BOLI death benefit	555	313
Purchases of premises and equipment, net	(8,621)	(7,332)
Net (increase) decrease in equipment leased to others under operating leases	(18,986)	7,746
Net cash (used in) provided by investing activities	(229,583)	361,704
Cash flows from financing activities:
Net decrease in noninterest-bearing deposits	(588,417)	(379,436)
Net increase (decrease) in interest-bearing deposits	524,957	(554,453)
Net increase in borrowings	541,945	719,884
Net decrease in subordinated debentures	0	(12,372)
Common stock repurchased and restricted stock surrendered	(161,826)	(249,007)
Cash dividends paid	(145,089)	(139,741)
Net cash provided by (used in) financing activities	171,570	(615,125)
Net increase in cash, cash equivalents, and restricted cash	221,971	53,128
Cash, cash equivalents, and restricted cash, beginning of period	385,767	398,437
Cash, cash equivalents, and restricted cash, end of period	607,738	451,565
Supplemental disclosures of cash flow information:
Cash paid for interest	97,238	47,569
Cash paid for income taxes	68,305	23,273
Loans transferred to foreclosed assets	37	1,059
Transfers from loans held for investment to loans held for sale	$ 25,124	$ 0

Organization

Organization	6 Months Ended
	Jun. 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 throughout the State of 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, real estate, and security monitoring cash flow 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 a 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 June 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	6 Months Ended
	Jun. 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 six months ended June 30, 2019 and year ended December 31, 2018 were $108.8 million and $77.0 million . As of June 30, 2019 and December 31, 2018 , we pledged cash collateral for our derivative contracts of $2.1 million and $2.6 million .

Investment Securities

Investment Securities	6 Months Ended
	Jun. 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: June 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 $ 1,125,267 $ 25,513 $ (306 ) $ 1,150,474 $ 634,774 $ 3,448 $ (5,372 ) $ 632,850 Agency commercial MBS 1,033,895 25,046 (95 ) 1,058,846 1,133,846 383 (21,525 ) 1,112,704 Municipal securities 700,470 36,594 (494 ) 736,570 1,298,514 21,000 (7,320 ) 1,312,194 Agency residential MBS 343,131 8,381 (152 ) 351,360 281,486 1,902 (2,300 ) 281,088 Asset-backed securities 226,693 866 (438 ) 227,121 81,762 104 (481 ) 81,385 Private label residential CMOs 108,526 3,610 (99 ) 112,037 101,313 1,985 (2,093 ) 101,205 Collateralized loan obligations 94,149 — (347 ) 93,802 — — — — SBA securities 51,154 670 (12 ) 51,812 68,158 — (1,111 ) 67,047 Corporate debt securities 17,000 3,034 — 20,034 17,000 553 — 17,553 U.S. Treasury securities 4,983 205 — 5,188 401,056 2,437 (88 ) 403,405 Total $ 3,705,268 $ 103,919 $ (1,943 ) $ 3,807,244 $ 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 June 30, 2019 , securities available-for-sale with a fair value of $493.8 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 June 30, 2019 , we sold $980.4 million of securities available-for-sale for a gross realized gain of $24.2 million and a gross realized loss of $2.0 million . During the three months ended June 30, 2018 , we sold $62.3 million of securities available-for-sale for a gross realized gain of $0.3 million and a gross realized loss of $60,000 . During the six months ended June 30, 2019 , we sold $1.4 billion of securities available-for-sale for a gross realized gain of $28.2 million and a gross realized loss of $3.9 million . During the six months ended June 30, 2018 , we sold $362.2 million of securities available-for-sale for a gross realized gain of $7.1 million and a gross realized loss of $0.6 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: June 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 $ 85,397 $ (267 ) $ 7,696 $ (39 ) $ 93,093 $ (306 ) Agency commercial MBS — — 29,902 (95 ) 29,902 (95 ) Municipal securities 4,044 (12 ) 25,874 (482 ) 29,918 (494 ) Agency residential MBS — — 9,533 (152 ) 9,533 (152 ) Asset-backed securities 84,083 (426 ) 3,915 (12 ) 87,998 (438 ) Private label residential CMOs — — 18,008 (99 ) 18,008 (99 ) Collateralized loan obligations 93,802 (347 ) — — 93,802 (347 ) SBA securities — — 2,063 (12 ) 2,063 (12 ) Total $ 267,326 $ (1,052 ) $ 96,991 $ (891 ) $ 364,317 $ (1,943 ) 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 June 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: June 30, 2019 Amortized Fair Maturities Cost Value (In thousands) Due in one year or less $ 14,660 $ 14,647 Due after one year through five years 194,493 197,141 Due after five years through ten years 1,028,156 1,054,251 Due after ten years 2,467,959 2,541,205 Total securities available-for-sale $ 3,705,268 $ 3,807,244 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 Six Months Ended June 30, March 31, June 30, June 30, 2019 2019 2018 2019 2018 (In thousands) Taxable interest $ 20,944 $ 19,742 $ 17,106 $ 40,686 $ 31,705 Non-taxable interest 7,547 9,593 10,276 17,140 21,383 Dividend income 457 345 348 802 780 Total interest income on investment securities $ 28,948 $ 29,680 $ 27,730 $ 58,628 $ 53,868

Loans and Leases

Loans and Leases	6 Months Ended
	Jun. 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: June 30, December 31, 2019 2018 (In thousands) Real estate mortgage $ 8,087,586 $ 7,933,859 Real estate construction and land 2,405,073 2,262,710 Commercial 7,593,728 7,428,500 Consumer 446,353 401,296 Total gross loans and leases held for investment 18,532,740 18,026,365 Deferred fees, net (59,888 ) (68,652 ) Total loans and leases held for investment, net of deferred fees 18,472,852 17,957,713 Allowance for loan and lease losses (135,037 ) (132,472 ) Total loans and leases held for investment, net $ 18,337,815 $ 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: June 30, 2019 30 - 89 90 or More Days Days Total Past Due Past Due Past Due Current Total (In thousands) Real estate mortgage: Commercial $ 4,516 $ 6,632 $ 11,148 $ 4,424,126 $ 4,435,274 Income producing and other residential 3,692 422 4,114 3,636,638 3,640,752 Total real estate mortgage 8,208 7,054 15,262 8,060,764 8,076,026 Real estate construction and land: Commercial — — — 972,891 972,891 Residential 4,672 — 4,672 1,398,567 1,403,239 Total real estate construction and land 4,672 — 4,672 2,371,458 2,376,130 Commercial: Asset-based 12,382 1,624 14,006 3,592,001 3,606,007 Venture capital 447 — 447 2,194,296 2,194,743 Other commercial 2,329 928 3,257 1,770,307 1,773,564 Total commercial 15,158 2,552 17,710 7,556,604 7,574,314 Consumer 964 169 1,133 445,249 446,382 Total $ 29,002 $ 9,775 $ 38,777 $ 18,434,075 $ 18,472,852 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: June 30, 2019 December 31, 2018 Nonaccrual Performing Total Nonaccrual Performing Total (In thousands) Real estate mortgage: Commercial $ 17,012 $ 4,418,262 $ 4,435,274 $ 15,321 $ 4,808,977 $ 4,824,298 Income producing and other residential 2,883 3,637,869 3,640,752 2,524 3,091,319 3,093,843 Total real estate mortgage 19,895 8,056,131 8,076,026 17,845 7,900,296 7,918,141 Real estate construction and land: Commercial 390 972,501 972,891 442 912,141 912,583 Residential — 1,403,239 1,403,239 — 1,321,073 1,321,073 Total real estate construction and land 390 2,375,740 2,376,130 442 2,233,214 2,233,656 Commercial: Asset-based 32,236 3,573,771 3,606,007 32,324 3,273,097 3,305,421 Venture capital 22,501 2,172,242 2,194,743 20,299 2,018,449 2,038,748 Other commercial 5,799 1,767,765 1,773,564 7,380 2,053,046 2,060,426 Total commercial 60,536 7,513,778 7,574,314 60,003 7,344,592 7,404,595 Consumer 444 445,938 446,382 1,043 400,278 401,321 Total $ 81,265 $ 18,391,587 $ 18,472,852 $ 79,333 $ 17,878,380 $ 17,957,713 At June 30, 2019 , nonaccrual loans and leases totaled $81.3 million and included $9.8 million of loans and leases 90 or more days past due, $3.3 million of loans and leases 30 to 89 days past due, and $68.2 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 June 30, 2019 , our three largest loan relationships on nonaccrual status had an aggregate carrying value of $45.0 million and represented 55% 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. June 30, 2019 Classified Special Mention Pass Total (In thousands) Real estate mortgage: Commercial $ 32,926 $ 52,477 $ 4,349,871 $ 4,435,274 Income producing and other residential 8,693 355 3,631,704 3,640,752 Total real estate mortgage 41,619 52,832 7,981,575 8,076,026 Real estate construction and land: Commercial 390 — 972,501 972,891 Residential — 5,268 1,397,971 1,403,239 Total real estate construction and land 390 5,268 2,370,472 2,376,130 Commercial: Asset-based 41,151 48,324 3,516,532 3,606,007 Venture capital 42,105 68,426 2,084,212 2,194,743 Other commercial 65,139 63,591 1,644,834 1,773,564 Total commercial 148,395 180,341 7,245,578 7,574,314 Consumer 575 863 444,944 446,382 Total $ 190,979 $ 239,304 $ 18,042,569 $ 18,472,852 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: June 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 $ 19,895 $ 10,457 $ 30,352 $ 17,845 $ 11,484 $ 29,329 Real estate construction and land 390 4,986 5,376 442 5,420 5,862 Commercial 60,536 931 61,467 60,003 692 60,695 Consumer 444 90 534 1,043 105 1,148 Total $ 81,265 $ 16,464 $ 97,729 $ 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: June 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 $ 493 $ 493 $ 69 $ 1,736 $ 1,648 $ 170 Income producing and other residential 2,066 2,061 191 2,569 2,563 247 Commercial: Asset based — — — — — — Venture capital 22,265 24,353 4,482 11,621 13,255 3,141 Other commercial 618 618 — 473 482 473 With No Related Allowance Recorded: Real estate mortgage: Commercial $ 19,994 $ 34,694 $ 17,783 $ 32,035 Income producing and other residential 7,799 10,234 7,241 9,425 Real estate construction and land: Commercial 5,376 5,419 5,862 5,870 Commercial: Asset-based 32,236 49,853 32,324 38,100 Venture capital 237 26,531 8,678 41,335 Other commercial 6,111 26,562 7,599 25,740 Consumer 534 702 1,148 1,470 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 30,352 $ 47,482 $ 260 $ 29,329 $ 45,671 $ 417 Real estate construction and land 5,376 5,419 — 5,862 5,870 — Commercial 61,467 127,917 4,482 60,695 118,912 3,614 Consumer 534 702 — 1,148 1,470 — Total $ 97,729 $ 181,520 $ 4,742 $ 97,034 $ 171,923 $ 4,031 Three Months Ended June 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 $ 493 $ 8 $ 7,786 $ 103 Income producing and other residential 2,066 15 2,419 21 Commercial: Venture capital 19,242 — 18,449 — Other commercial 619 9 688 — With No Related Allowance Recorded: Real estate mortgage: Commercial $ 16,716 $ 54 $ 58,733 $ 725 Income producing and other residential 7,738 57 8,293 44 Real estate construction and land: Commercial 5,376 98 5,549 93 Residential — — 10,450 — Commercial: Asset-based 31,148 — 29,677 — Venture capital 237 — 2,800 — Other commercial 6,111 20 8,508 335 Consumer 511 1 355 2 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 27,013 $ 134 $ 77,231 $ 893 Real estate construction and land 5,376 98 15,999 93 Commercial 57,357 29 60,122 335 Consumer 511 1 355 2 Total $ 90,257 $ 262 $ 153,707 $ 1,323 _________________________ (1) For loans and leases reported as impaired at June 30, 2019 and 2018 , amounts were calculated based on the period of time such loans and leases were impaired during the reported period. Six Months Ended June 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 $ 493 $ 16 $ 7,786 $ 204 Income producing and other residential 2,066 29 2,419 42 Commercial: Venture capital 15,359 — 15,715 — Other commercial 619 18 346 — With No Related Allowance Recorded: Real estate mortgage: Commercial $ 16,016 $ 106 $ 55,214 $ 1,378 Income producing and other residential 7,647 110 8,277 88 Real estate construction and land: Commercial 5,376 196 5,549 184 Commercial: Asset-based 30,881 — 29,677 — Venture capital 237 — 2,645 — Other commercial 6,052 51 7,946 1,377 Consumer 485 3 341 4 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 26,222 $ 261 $ 73,696 $ 1,712 Real estate construction and land 5,376 196 10,803 184 Commercial 53,148 69 56,329 1,377 Consumer 485 3 341 4 Total $ 85,231 $ 529 $ 141,169 $ 3,277 _________________________ (1) For loans and leases reported as impaired at June 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 June 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: Income producing and other residential 3 $ 456 $ 456 3 $ 1,704 $ 645 Commercial: Asset-based 1 620 620 — — — Venture capital 4 13,971 14,972 4 5,236 5,236 Other commercial 3 107 107 2 31 31 Consumer — — — 1 27 27 Total 11 $ 15,154 $ 16,155 10 $ 6,998 $ 5,939 Six Months Ended June 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 $ — — $ — $ — Income producing and other residential 6 1,245 1,245 3 1,704 645 Commercial: Asset-based 1 620 620 — — — Venture capital 10 16,076 16,214 4 5,236 5,236 Other commercial 11 692 692 4 11,814 11,814 Consumer — — — 1 27 27 Total 29 $ 18,670 $ 18,771 12 $ 18,781 $ 17,722 During the three months ended June 30, 2019 , two venture capital loans totaling $447,000 and one other commercial loan of $81,000 were restructured in the preceding 12-month period and subsequently defaulted after being restructured. During the six months ended June 30, 2019 , two venture capital loans totaling $447,000 and three other commercial loans totaling $140,000 were restructured in the preceding 12-month period and subsequently defaulted after being restructured. During the three months ended June 30, 2018 , there were no loans restructured in the preceding 12-month period that subsequently defaulted after being restructured. Due the six months ended June 30, 2018 , one other commercial loan of $2.1 million was restructured in the preceding 12-month period and subsequently defaulted after being restructured. 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 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 Six Months Ended June 30, 2019 June 30, 2019 (In thousands) Component of leases receivable income: Interest income on net investments in leases $ 2,886 $ 6,026 The following table presents the components of leases receivable as of the date indicated: June 30, 2019 (In thousands) Net investment in direct financing leases: Lease payments receivable $ 180,179 Unguaranteed residual assets 26,238 Deferred fees and other 849 Aggregate net investment in leases $ 207,266 The following table presents maturities of leases receivable as of the date indicated: June 30, 2019 (In thousands) Period Ending December 31, 2019 $ 35,758 2020 71,453 2021 50,719 2022 19,333 2023 11,265 Thereafter 8,763 Total undiscounted cash flows 197,291 Less: Unearned income (17,112 ) Present value of lease payments $ 180,179 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 June 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 $ 45,754 $ 27,208 $ 61,496 $ 1,823 $ 136,281 Charge-offs (534 ) — (16,927 ) (176 ) (17,637 ) Recoveries 240 — 6,080 73 6,393 Net charge-offs (294 ) — (10,847 ) (103 ) (11,244 ) Provision (negative provision) 1,366 (830 ) 8,752 712 10,000 Balance, end of period $ 46,826 $ 26,378 $ 59,401 $ 2,432 $ 135,037 Six Months Ended June 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 (730 ) — (19,930 ) (442 ) (21,102 ) Recoveries 383 — 9,186 98 9,667 Net charge-offs (347 ) — (10,744 ) (344 ) (11,435 ) Provision (negative provision) 1,152 (1,831 ) 13,785 894 14,000 Balance, end of period $ 46,826 $ 26,378 $ 59,401 $ 2,432 $ 135,037 Ending Allowance by Impairment Methodology: Individually evaluated for impairment $ 260 $ — $ 4,482 $ — $ 4,742 Collectively evaluated for impairment $ 46,566 $ 26,378 $ 54,919 $ 2,432 $ 130,295 Ending Loans and Leases by Impairment Methodology: Individually evaluated for impairment $ 27,594 $ 5,376 $ 60,380 $ — $ 93,350 Collectively evaluated for impairment 8,048,432 2,370,754 7,513,934 446,382 18,379,502 Ending balance $ 8,076,026 $ 2,376,130 $ 7,574,314 $ 446,382 $ 18,472,852 Three Months Ended June 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 $ 40,158 $ 18,190 $ 73,780 $ 2,147 $ 134,275 Charge-offs (4,747 ) — (13,425 ) (63 ) (18,235 ) Recoveries 120 17 912 50 1,099 Net (charge-offs) recoveries (4,627 ) 17 (12,513 ) (13 ) (17,136 ) Provision (negative provision) 9,936 8,003 (2,461 ) (478 ) 15,000 Balance, end of period $ 45,467 $ 26,210 $ 58,806 $ 1,656 $ 132,139 Six Months Ended June 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 (7,345 ) — (22,949 ) (94 ) (30,388 ) Recoveries 1,777 26 6,399 95 8,297 Net (charge-offs) recoveries (5,568 ) 26 (16,550 ) 1 (22,091 ) Provision (negative provision) 10,984 13,129 (8,666 ) (673 ) 14,774 Balance, end of period $ 45,467 $ 26,210 $ 58,806 $ 1,656 $ 132,139 Ending Allowance by Impairment Methodology: Individually evaluated for impairment $ 472 $ — $ 8,480 $ — $ 8,952 Collectively evaluated for impairment $ 44,995 $ 26,210 $ 50,326 $ 1,656 $ 123,187 Ending Loans and Leases by Impairment Methodology: Individually evaluated for impairment $ 83,931 $ 15,998 $ 67,228 $ — $ 167,157 Collectively evaluated for impairment 7,482,443 1,858,028 6,998,884 378,680 16,718,035 Ending balance $ 7,566,374 $ 1,874,026 $ 7,066,112 $ 378,680 $ 16,885,192 _______________________________________ (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 six months ended June 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 June 30, 2019 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period $ 136,281 $ 36,861 $ 173,142 Charge-offs (17,637 ) — (17,637 ) Recoveries 6,393 — 6,393 Net charge-offs (11,244 ) — (11,244 ) Provision (negative provision) 10,000 (2,000 ) 8,000 Balance, end of period $ 135,037 $ 34,861 $ 169,898 Six Months Ended June 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 (21,102 ) — (21,102 ) Recoveries 9,667 — 9,667 Net charge-offs (11,435 ) — (11,435 ) Provision (negative provision) 14,000 (2,000 ) 12,000 Balance, end of period $ 135,037 $ 34,861 $ 169,898 Three Months Ended June 30, 2018 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period $ 134,275 $ 32,861 $ 167,136 Charge-offs (18,235 ) — (18,235 ) Recoveries 1,099 — 1,099 Net charge-offs (17,136 ) — (17,136 ) Provision 15,000 2,500 17,500 Balance, end of period $ 132,139 $ 35,361 $ 167,500 Six Months Ended June 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 (30,388 ) — (30,388 ) Recoveries 8,297 — 8,297 Net charge-offs (22,091 ) — (22,091 ) Provision 14,774 6,726 21,500 Balance, end of period $ 132,139 $ 35,361 $ 167,500 _______________________________________ (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 six months ended June 30, 2018

Foreclosed Assets

Foreclosed Assets	6 Months Ended
	Jun. 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: June 30, December 31, Property Type 2019 2018 (In thousands) Commercial real estate $ 253 $ 2,004 Single-family residence 953 953 Construction and land development 219 219 Multi‑family — 1,059 Total other real estate owned, net 1,425 4,235 Other foreclosed assets 47 1,064 Total foreclosed assets, net $ 1,472 $ 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 — Reductions related to sales (3,864 ) Balance, June 30, 2019 $ 1,472

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 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 $14.6 million for 2020 , $10.8 million for 2021 , $7.5 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 Six Months Ended June 30, March 31, June 30, June 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 Balance, end of period 119,497 119,497 119,497 119,497 119,497 Accumulated Amortization: Balance, beginning of period (67,247 ) (62,377 ) (46,217 ) (62,377 ) (39,871 ) Amortization (4,870 ) (4,870 ) (5,587 ) (9,740 ) (11,933 ) Balance, end of period (72,117 ) (67,247 ) (51,804 ) (72,117 ) (51,804 ) Net CDI and CRI, end of period $ 47,380 $ 52,250 $ 67,693 $ 47,380 $ 67,693

Other Assets

Other Assets	6 Months Ended
	Jun. 30, 2019
Other Assets [Abstract]
Other Assets	OTHER ASSETS The following table presents the detail of our other assets as of the dates indicated: June 30, December 31, Other Assets 2019 2018 (In thousands) Cash surrender value of BOLI $ 196,745 $ 194,897 Operating lease ROU assets, net 119,086 — Interest receivable 83,308 88,754 LIHTC investments 63,151 59,507 CRA investments (1) 58,892 59,062 Taxes receivable 28,326 39,096 Prepaid expenses 19,576 18,006 Equity investments without readily determinable fair values 14,827 14,758 Equity warrants 3,931 4,793 Equity investments with readily determinable fair values 3,284 4,891 Other receivables/assets 20,993 39,132 Total other assets $ 612,119 $ 522,896 ________________________ (1) Includes equity investments without readily determinable fair values of $14.0 million and $12.5 million at June 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 adjustments during the six months ended June 30, 2019 . On a cumulative basis since January 1, 2018 and through June 30, 2019 , we recorded impairments of $278,000 and upward adjustments of $286,000

Leases

Leases	6 Months Ended
	Jun. 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 has operating leases related to our facilities as of June 30, 2019 , which consists 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 28 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 Six Months Ended June 30, 2019 June 30, 2019 (In thousands) Operating lease expense: Fixed costs $ 8,534 $ 16,836 Variable costs 46 70 Short-term lease costs 203 723 Sublease income (1,054 ) (2,180 ) Net lease expense $ 7,729 $ 15,449 The following table presents supplemental cash flow information related to leases for the period indicated: Six Months Ended June 30, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 16,408 ROU assets obtained in exchange for lease obligations: Operating leases $ 149,621 The following table presents supplemental balance sheet and other information related to operating leases as of the date indicated: June 30, 2019 (Dollars in thousands) Operating leases: Operating lease right-of-use assets, net $ 119,086 Operating lease liabilities $ 133,887 Weighted average remaining lease term (in years) 5.6 Weighted average discount rate 2.93 % The following table presents maturities of operating lease liabilities as of the date indicated: June 30, 2019 (In thousands) Period ending December 31, 2019 $ 16,440 2020 30,764 2021 27,348 2022 21,645 2023 18,735 Thereafter 31,185 Total operating lease liabilities 146,117 Less: Imputed interest (12,230 ) Present value of operating lease liabilities $ 133,887 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: June 30, 2019 (In thousands) Period Ending December 31, 2019 $ 18,620 2020 35,919 2021 28,199 2022 21,337 2023 18,604 Thereafter 50,214 Total undiscounted cash flows $ 172,893
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 has operating leases related to our facilities as of June 30, 2019 , which consists 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 28 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 Six Months Ended June 30, 2019 June 30, 2019 (In thousands) Operating lease expense: Fixed costs $ 8,534 $ 16,836 Variable costs 46 70 Short-term lease costs 203 723 Sublease income (1,054 ) (2,180 ) Net lease expense $ 7,729 $ 15,449 The following table presents supplemental cash flow information related to leases for the period indicated: Six Months Ended June 30, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 16,408 ROU assets obtained in exchange for lease obligations: Operating leases $ 149,621 The following table presents supplemental balance sheet and other information related to operating leases as of the date indicated: June 30, 2019 (Dollars in thousands) Operating leases: Operating lease right-of-use assets, net $ 119,086 Operating lease liabilities $ 133,887 Weighted average remaining lease term (in years) 5.6 Weighted average discount rate 2.93 % The following table presents maturities of operating lease liabilities as of the date indicated: June 30, 2019 (In thousands) Period ending December 31, 2019 $ 16,440 2020 30,764 2021 27,348 2022 21,645 2023 18,735 Thereafter 31,185 Total operating lease liabilities 146,117 Less: Imputed interest (12,230 ) Present value of operating lease liabilities $ 133,887 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: June 30, 2019 (In thousands) Period Ending December 31, 2019 $ 18,620 2020 35,919 2021 28,199 2022 21,337 2023 18,604 Thereafter 50,214 Total undiscounted cash flows $ 172,893

Borrowings and Subordinated Deb

Borrowings and Subordinated Debentures	6 Months Ended
	Jun. 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: June 30, 2019 December 31, 2018 Weighted Weighted Average Average Amount Rate Amount Rate (Dollars in thousands) Non‑recourse debt $ 59 7.50 % $ 114 7.50 % FHLB secured advances 1,522,000 2.52 % 1,040,000 2.56 % FHLB unsecured overnight advance 141,000 2.41 % 141,000 2.53 % AFX borrowings 250,000 2.43 % 190,000 2.56 % Total borrowings $ 1,913,059 2.50 % $ 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 June 30, 2019 , this debt had a weighted average remaining maturity of 0.5 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 June 30, 2019 of $4.2 billion , collateralized by a blanket lien on $6.0 billion of qualifying loans. As of June 30, 2019 , the balance outstanding was a $1.5 billion overnight advance. 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 June 30, 2019 , the Bank had secured borrowing capacity of $2.0 billion collateralized by liens covering $2.7 billion of qualifying loans. As of June 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 June 30, 2019 . At December 31, 2018 , the balance outstanding was $141.0 million . Federal Funds Arrangements with Commercial Banks. As of June 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 June 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 June 30, 2019 , the balance outstanding was $250.0 million , which consisted of $240.0 million in overnight borrowings and a $10.0 million one-month borrowing with a maturity date of July 22, 2019 . As of December 31, 2018 , there was a $190.0 million overnight borrowing outstanding. Subordinated Debentures The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated: June 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 5.51 % $ 10,310 5.89 % 8/15/2003 9/17/2033 3-month LIBOR + 3.10 Trust VI 10,310 5.46 % 10,310 5.84 % 9/3/2003 9/15/2033 3-month LIBOR + 3.05 Trust CII 5,155 5.36 % 5,155 5.74 % 9/17/2003 9/17/2033 3-month LIBOR + 2.95 Trust VII 61,856 5.33 % 61,856 5.27 % 2/5/2004 4/23/2034 3-month LIBOR + 2.75 Trust CIII 20,619 4.10 % 20,619 4.48 % 8/15/2005 9/15/2035 3-month LIBOR + 1.69 Trust FCCI 16,495 4.01 % 16,495 4.39 % 1/25/2007 3/15/2037 3-month LIBOR + 1.60 Trust FCBI 10,310 3.96 % 10,310 4.34 % 9/30/2005 12/15/2035 3-month LIBOR + 1.55 Trust CS 2005-1 82,475 4.36 % 82,475 4.74 % 11/21/2005 12/15/2035 3-month LIBOR + 1.95 Trust CS 2005-2 128,866 4.53 % 128,866 4.47 % 12/14/2005 1/30/2036 3-month LIBOR + 1.95 Trust CS 2006-1 51,545 4.53 % 51,545 4.47 % 2/22/2006 4/30/2036 3-month LIBOR + 1.95 Trust CS 2006-2 51,550 4.53 % 51,550 4.47 % 9/27/2006 10/30/2036 3-month LIBOR + 1.95 Trust CS 2006-3 (1) 29,314 1.74 % 29,556 1.73 % 9/29/2006 10/30/2036 3-month EURIBOR + 2.05 Trust CS 2006-4 16,470 4.53 % 16,470 4.47 % 12/5/2006 1/30/2037 3-month LIBOR + 1.95 Trust CS 2006-5 6,650 4.53 % 6,650 4.47 % 12/19/2006 1/30/2037 3-month LIBOR + 1.95 Trust CS 2007-2 39,177 4.53 % 39,177 4.47 % 6/13/2007 7/30/2037 3-month LIBOR + 1.95 Gross subordinated debentures 541,102 4.45 % 541,344 4.51 % Unamortized discount (2) (84,990 ) (87,498 ) Net subordinated debentures $ 456,112 $ 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	6 Months Ended
	Jun. 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: June 30, December 31, 2019 2018 (In thousands) Loan commitments to extend credit $ 7,610,899 $ 7,528,248 Standby letters of credit 387,012 364,210 Commitments to contribute capital to low income housing project partnerships and small business investment companies 109,103 101,991 Commitments to contribute capital to private equity funds 50 50 Total $ 8,107,064 $ 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 June 30, 2019 and December 31, 2018 , we had commitments to contribute capital to these entities totaling $109.1 million and $102.0 million . We also had commitments to contribute up to an additional $50,000 to private equity funds at June 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	6 Months Ended
	Jun. 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 June 30, 2019 Measured on a Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Securities available‑for‑sale: Agency residential CMOs $ 1,150,474 $ — $ 1,150,474 $ — Agency commercial MBS 1,058,846 — 1,058,846 — Municipal securities 736,570 — 736,570 — Agency residential MBS 351,360 — 351,360 — Asset-backed securities 227,121 — 193,624 33,497 Private label residential CMOs 112,037 — 105,138 6,899 Collateralized loan obligations 93,802 — 93,802 — SBA securities 51,812 — 51,812 — Corporate debt securities 20,034 — 20,034 — U.S. Treasury securities 5,188 5,188 — — Total securities available-for-sale 3,807,244 5,188 3,761,660 40,396 Equity warrants 3,931 — — 3,931 Other derivative assets 1,459 — 1,459 — Equity investments with readily determinable fair values 3,284 3,284 — — Total recurring assets $ 3,815,918 $ 8,472 $ 3,763,119 $ 44,327 Derivative liabilities $ 317 $ — $ 317 $ — 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 six months ended June 30, 2019 , there was a $63,000 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: June 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 3.6% - 100.0% 11.2% 12.0% - 15.0% 13.7% Annual default rates (1) 0.4% - 82.0% 1.9% 2.0% 2.0% Loss severity rates (1) 1.5% - 145.8% 57.8% 60.0% 60.0% Discount rates 2.5% - 9.3% 6.4% 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: June 30, 2019 Equity Warrants Weighted Average Unobservable Inputs Input Volatility 16.7% Risk-free interest rate 1.7% Remaining life assumption (in years) 3.36 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 224 (56 ) 3,493 Total included in other comprehensive income (64 ) 559 — Issuances — — 161 Sales and dispositions (1) — — (4,453 ) Net settlements (549 ) (6,951 ) — Transfers to Level 1 — — (63 ) Balance, June 30, 2019 $ 6,899 $ 33,497 $ 3,931 ______________________ (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 June 30, 2019 Measured on a Non‑Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Impaired loans $ 23,517 $ — $ — $ 23,517 Total non-recurring $ 23,517 $ — $ — $ 23,517 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 Six Months Ended Losses on Assets June 30, June 30, Measured on a Non‑Recurring Basis 2019 2018 2019 2018 (In thousands) Impaired loans $ 1,842 $ 12,076 $ 3,038 $ 15,994 OREO — — — 65 Total losses $ 1,842 $ 12,076 $ 3,038 $ 16,059 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: June 30, 2019 Valuation Unobservable Weighted Asset Fair Value Technique Inputs Range Average (In thousands) Impaired loans $ 17,073 Discounted cash flows Discount rates 3.75% - 8.00% 6.48% Impaired loans 6,444 Third party appraisals No discounts Total non-recurring Level 3 $ 23,517 The following tables present carrying amounts and estimated fair values of certain financial instruments as of the dates indicated: June 30, 2019 Carrying Estimated Fair Value Amount Total Level 1 Level 2 Level 3 ( In thousands ) Financial Assets: Cash and due from banks $ 185,075 $ 185,075 $ 185,075 $ — $ — Interest‑earning deposits in financial institutions 422,663 422,663 422,663 — — Securities available‑for‑sale 3,807,244 3,807,244 5,188 3,761,660 40,396 Investment in FHLB stock 43,146 43,146 — 43,146 — Loans and leases held for investment, net 18,337,815 17,841,445 — — 17,841,445 Equity warrants 3,931 3,931 — — 3,931 Other derivative assets 1,459 1,459 — 1,459 — Equity investments with readily determinable fair values 3,284 3,284 3,284 — — Financial Liabilities: Core deposits 15,617,488 15,617,488 — 15,617,488 — Non-core non-maturity deposits 436,833 436,833 — 436,833 — Time deposits 2,751,435 2,749,828 — 2,749,828 — Borrowings 1,913,059 1,913,059 1,903,000 10,059 — Subordinated debentures 456,112 439,635 — 439,635 — Derivative liabilities 317 317 — 317 — 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 June 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	6 Months Ended
	Jun. 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 Six Months Ended June 30, March 31, June 30, June 30, 2019 2019 2018 2019 2018 (Dollars in thousands, except per share data) Basic Earnings Per Share: Net earnings $ 128,125 $ 112,604 $ 115,735 $ 240,729 $ 234,011 Less: Earnings allocated to unvested restricted stock (1) (1,190 ) (1,163 ) (1,348 ) (2,343 ) (2,469 ) Net earnings allocated to common shares $ 126,935 $ 111,441 $ 114,387 $ 238,386 $ 231,542 Weighted-average basic shares and unvested restricted stock outstanding 120,042 122,227 126,082 121,128 126,780 Less: Weighted-average unvested restricted stock outstanding (1,462 ) (1,352 ) (1,466 ) (1,407 ) (1,439 ) Weighted-average basic shares outstanding 118,580 120,875 124,616 119,721 125,341 Basic earnings per share $ 1.07 $ 0.92 $ 0.92 $ 1.99 $ 1.85 Diluted Earnings Per Share: Net earnings allocated to common shares $ 126,935 $ 111,441 $ 114,387 $ 238,386 $ 231,542 Weighted-average basic shares outstanding 118,580 120,875 124,616 119,721 125,341 Diluted earnings per share $ 1.07 $ 0.92 $ 0.92 $ 1.99 $ 1.85 ________________________ (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	6 Months Ended
	Jun. 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 June 30, 2019 Three Months Ended June 30, 2018 Total Revenue from Total Revenue from Recorded Contracts with Recorded Contracts with Revenue Customers Revenue Customers (In thousands) Total interest income $ 314,533 $ — $ 288,514 $ — Noninterest income: Service charges on deposit accounts 3,771 3,771 4,265 4,265 Other commissions and fees 11,590 5,158 11,767 5,101 Leased equipment income 9,182 — 9,790 — Gain on sale of loans 326 — 106 — Gain on sale of securities 22,192 — 253 — Other income 3,832 454 13,457 436 Total noninterest income 50,893 9,383 39,638 9,802 Total revenue $ 365,426 $ 9,383 $ 328,152 $ 9,802 The following table presents revenue from contracts with customers based on the timing of revenue recognition for the periods indicated: Three Months Ended June 30, 2019 2018 (In thousands) Products and services transferred at a point in time $ 4,987 $ 4,930 Products and services transferred over time 4,396 4,872 Total revenue from contracts with customers $ 9,383 $ 9,802 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: Six Months Ended June 30, 2019 Six Months Ended June 30, 2018 Total Revenue from Total Revenue from Recorded Contracts with Recorded Contracts with Revenue Customers Revenue Customers (In thousands) Total interest income $ 619,092 $ — $ 566,289 $ — Noninterest income: Service charges on deposit accounts 7,501 7,501 8,439 8,439 Other commissions and fees 22,598 9,696 22,032 9,752 Leased equipment income 18,464 — 19,377 — Gain on sale of loans 326 — 4,675 — Gain on sale of securities 24,353 — 6,564 — Other income 8,715 825 17,110 897 Total noninterest income 81,957 18,022 78,197 19,088 Total revenue $ 701,049 $ 18,022 $ 644,486 $ 19,088 The following table presents revenue from contracts with customers based on the timing of revenue recognition for the periods indicated: Six Months Ended June 30, 2019 2018 (In thousands) Products and services transferred at a point in time $ 9,533 $ 9,591 Products and services transferred over time 8,489 9,497 Total revenue from contracts with customers $ 18,022 $ 19,088 Contract Balances The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers: June 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" $ 556 $ 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 six months ended June 30, 2019 due to revenue recognized that was included in the contract liability balance at the beginning of the period was $65,000

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 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 June 30, 2019 , there were 2,438,627 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 $6.2 million , $5.8 million , and $6.9 million for the three months ended June 30, 2019 , March 31, 2019 , and June 30, 2018 , and $12.0 million and $14.1 million for the six months ended June 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 June 30, 2019 totaled $66.5 million . Time-Based Restricted Stock Awards At June 30, 2019 , there were 1,623,494 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 June 30, 2019 , there were 276,386 unvested PRSUs. 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	6 Months Ended
	Jun. 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 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. Receivables arising from operating leases are not within the scope of CECL. 3. 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 other-than-temporary impairment 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 three preliminary calculations with two 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. The ultimate impact is influenced by our portfolio characteristics, of which the vast majority is comprised of short-duration commercial loans; the macroeconomic conditions and forecasts at adoption; and other management judgments. 5. We plan to adopt this new standard on January 1, 2020. The new standard will be significant to the policies, processes, and methodology used to determine credit losses; however, we are not yet in a position to disclose the quantitative effect on the Company's consolidated financial position and results of operations as the calculations and models continue to be evaluated and assumptions are subject to change. 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	6 Months Ended
	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS Common Stock Dividends On August 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 August 30, 2019 to stockholders of record at the close of business on August 20, 2019 . The Company has evaluated events that have occurred subsequent to June 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)	6 Months Ended
	Jun. 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 throughout the State of 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, real estate, and security monitoring cash flow 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 a 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 June 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 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. Receivables arising from operating leases are not within the scope of CECL. 3. 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 other-than-temporary impairment 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 three preliminary calculations with two 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. The ultimate impact is influenced by our portfolio characteristics, of which the vast majority is comprised of short-duration commercial loans; the macroeconomic conditions and forecasts at adoption; and other management judgments. 5. We plan to adopt this new standard on January 1, 2020. The new standard will be significant to the policies, processes, and methodology used to determine credit losses; however, we are not yet in a position to disclose the quantitative effect on the Company's consolidated financial position and results of operations as the calculations and models continue to be evaluated and assumptions are subject to change. 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)	6 Months Ended
	Jun. 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)	6 Months Ended
	Jun. 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: June 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 $ 1,125,267 $ 25,513 $ (306 ) $ 1,150,474 $ 634,774 $ 3,448 $ (5,372 ) $ 632,850 Agency commercial MBS 1,033,895 25,046 (95 ) 1,058,846 1,133,846 383 (21,525 ) 1,112,704 Municipal securities 700,470 36,594 (494 ) 736,570 1,298,514 21,000 (7,320 ) 1,312,194 Agency residential MBS 343,131 8,381 (152 ) 351,360 281,486 1,902 (2,300 ) 281,088 Asset-backed securities 226,693 866 (438 ) 227,121 81,762 104 (481 ) 81,385 Private label residential CMOs 108,526 3,610 (99 ) 112,037 101,313 1,985 (2,093 ) 101,205 Collateralized loan obligations 94,149 — (347 ) 93,802 — — — — SBA securities 51,154 670 (12 ) 51,812 68,158 — (1,111 ) 67,047 Corporate debt securities 17,000 3,034 — 20,034 17,000 553 — 17,553 U.S. Treasury securities 4,983 205 — 5,188 401,056 2,437 (88 ) 403,405 Total $ 3,705,268 $ 103,919 $ (1,943 ) $ 3,807,244 $ 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: June 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 $ 85,397 $ (267 ) $ 7,696 $ (39 ) $ 93,093 $ (306 ) Agency commercial MBS — — 29,902 (95 ) 29,902 (95 ) Municipal securities 4,044 (12 ) 25,874 (482 ) 29,918 (494 ) Agency residential MBS — — 9,533 (152 ) 9,533 (152 ) Asset-backed securities 84,083 (426 ) 3,915 (12 ) 87,998 (438 ) Private label residential CMOs — — 18,008 (99 ) 18,008 (99 ) Collateralized loan obligations 93,802 (347 ) — — 93,802 (347 ) SBA securities — — 2,063 (12 ) 2,063 (12 ) Total $ 267,326 $ (1,052 ) $ 96,991 $ (891 ) $ 364,317 $ (1,943 ) 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: June 30, 2019 Amortized Fair Maturities Cost Value (In thousands) Due in one year or less $ 14,660 $ 14,647 Due after one year through five years 194,493 197,141 Due after five years through ten years 1,028,156 1,054,251 Due after ten years 2,467,959 2,541,205 Total securities available-for-sale $ 3,705,268 $ 3,807,244
Investment income	The following table presents the composition of our interest income on investment securities for the periods indicated: Three Months Ended Six Months Ended June 30, March 31, June 30, June 30, 2019 2019 2018 2019 2018 (In thousands) Taxable interest $ 20,944 $ 19,742 $ 17,106 $ 40,686 $ 31,705 Non-taxable interest 7,547 9,593 10,276 17,140 21,383 Dividend income 457 345 348 802 780 Total interest income on investment securities $ 28,948 $ 29,680 $ 27,730 $ 58,628 $ 53,868

Loans and Leases (Tables)

Loans and Leases (Tables)	6 Months Ended
	Jun. 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: June 30, December 31, 2019 2018 (In thousands) Real estate mortgage $ 8,087,586 $ 7,933,859 Real estate construction and land 2,405,073 2,262,710 Commercial 7,593,728 7,428,500 Consumer 446,353 401,296 Total gross loans and leases held for investment 18,532,740 18,026,365 Deferred fees, net (59,888 ) (68,652 ) Total loans and leases held for investment, net of deferred fees 18,472,852 17,957,713 Allowance for loan and lease losses (135,037 ) (132,472 ) Total loans and leases held for investment, net $ 18,337,815 $ 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: June 30, 2019 30 - 89 90 or More Days Days Total Past Due Past Due Past Due Current Total (In thousands) Real estate mortgage: Commercial $ 4,516 $ 6,632 $ 11,148 $ 4,424,126 $ 4,435,274 Income producing and other residential 3,692 422 4,114 3,636,638 3,640,752 Total real estate mortgage 8,208 7,054 15,262 8,060,764 8,076,026 Real estate construction and land: Commercial — — — 972,891 972,891 Residential 4,672 — 4,672 1,398,567 1,403,239 Total real estate construction and land 4,672 — 4,672 2,371,458 2,376,130 Commercial: Asset-based 12,382 1,624 14,006 3,592,001 3,606,007 Venture capital 447 — 447 2,194,296 2,194,743 Other commercial 2,329 928 3,257 1,770,307 1,773,564 Total commercial 15,158 2,552 17,710 7,556,604 7,574,314 Consumer 964 169 1,133 445,249 446,382 Total $ 29,002 $ 9,775 $ 38,777 $ 18,434,075 $ 18,472,852 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: June 30, 2019 December 31, 2018 Nonaccrual Performing Total Nonaccrual Performing Total (In thousands) Real estate mortgage: Commercial $ 17,012 $ 4,418,262 $ 4,435,274 $ 15,321 $ 4,808,977 $ 4,824,298 Income producing and other residential 2,883 3,637,869 3,640,752 2,524 3,091,319 3,093,843 Total real estate mortgage 19,895 8,056,131 8,076,026 17,845 7,900,296 7,918,141 Real estate construction and land: Commercial 390 972,501 972,891 442 912,141 912,583 Residential — 1,403,239 1,403,239 — 1,321,073 1,321,073 Total real estate construction and land 390 2,375,740 2,376,130 442 2,233,214 2,233,656 Commercial: Asset-based 32,236 3,573,771 3,606,007 32,324 3,273,097 3,305,421 Venture capital 22,501 2,172,242 2,194,743 20,299 2,018,449 2,038,748 Other commercial 5,799 1,767,765 1,773,564 7,380 2,053,046 2,060,426 Total commercial 60,536 7,513,778 7,574,314 60,003 7,344,592 7,404,595 Consumer 444 445,938 446,382 1,043 400,278 401,321 Total $ 81,265 $ 18,391,587 $ 18,472,852 $ 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: June 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 $ 19,895 $ 10,457 $ 30,352 $ 17,845 $ 11,484 $ 29,329 Real estate construction and land 390 4,986 5,376 442 5,420 5,862 Commercial 60,536 931 61,467 60,003 692 60,695 Consumer 444 90 534 1,043 105 1,148 Total $ 81,265 $ 16,464 $ 97,729 $ 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. June 30, 2019 Classified Special Mention Pass Total (In thousands) Real estate mortgage: Commercial $ 32,926 $ 52,477 $ 4,349,871 $ 4,435,274 Income producing and other residential 8,693 355 3,631,704 3,640,752 Total real estate mortgage 41,619 52,832 7,981,575 8,076,026 Real estate construction and land: Commercial 390 — 972,501 972,891 Residential — 5,268 1,397,971 1,403,239 Total real estate construction and land 390 5,268 2,370,472 2,376,130 Commercial: Asset-based 41,151 48,324 3,516,532 3,606,007 Venture capital 42,105 68,426 2,084,212 2,194,743 Other commercial 65,139 63,591 1,644,834 1,773,564 Total commercial 148,395 180,341 7,245,578 7,574,314 Consumer 575 863 444,944 446,382 Total $ 190,979 $ 239,304 $ 18,042,569 $ 18,472,852 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: June 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 $ 493 $ 493 $ 69 $ 1,736 $ 1,648 $ 170 Income producing and other residential 2,066 2,061 191 2,569 2,563 247 Commercial: Asset based — — — — — — Venture capital 22,265 24,353 4,482 11,621 13,255 3,141 Other commercial 618 618 — 473 482 473 With No Related Allowance Recorded: Real estate mortgage: Commercial $ 19,994 $ 34,694 $ 17,783 $ 32,035 Income producing and other residential 7,799 10,234 7,241 9,425 Real estate construction and land: Commercial 5,376 5,419 5,862 5,870 Commercial: Asset-based 32,236 49,853 32,324 38,100 Venture capital 237 26,531 8,678 41,335 Other commercial 6,111 26,562 7,599 25,740 Consumer 534 702 1,148 1,470 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 30,352 $ 47,482 $ 260 $ 29,329 $ 45,671 $ 417 Real estate construction and land 5,376 5,419 — 5,862 5,870 — Commercial 61,467 127,917 4,482 60,695 118,912 3,614 Consumer 534 702 — 1,148 1,470 — Total $ 97,729 $ 181,520 $ 4,742 $ 97,034 $ 171,923 $ 4,031 Three Months Ended June 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 $ 493 $ 8 $ 7,786 $ 103 Income producing and other residential 2,066 15 2,419 21 Commercial: Venture capital 19,242 — 18,449 — Other commercial 619 9 688 — With No Related Allowance Recorded: Real estate mortgage: Commercial $ 16,716 $ 54 $ 58,733 $ 725 Income producing and other residential 7,738 57 8,293 44 Real estate construction and land: Commercial 5,376 98 5,549 93 Residential — — 10,450 — Commercial: Asset-based 31,148 — 29,677 — Venture capital 237 — 2,800 — Other commercial 6,111 20 8,508 335 Consumer 511 1 355 2 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 27,013 $ 134 $ 77,231 $ 893 Real estate construction and land 5,376 98 15,999 93 Commercial 57,357 29 60,122 335 Consumer 511 1 355 2 Total $ 90,257 $ 262 $ 153,707 $ 1,323 _________________________ (1) For loans and leases reported as impaired at June 30, 2019 and 2018 , amounts were calculated based on the period of time such loans and leases were impaired during the reported period. Six Months Ended June 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 $ 493 $ 16 $ 7,786 $ 204 Income producing and other residential 2,066 29 2,419 42 Commercial: Venture capital 15,359 — 15,715 — Other commercial 619 18 346 — With No Related Allowance Recorded: Real estate mortgage: Commercial $ 16,016 $ 106 $ 55,214 $ 1,378 Income producing and other residential 7,647 110 8,277 88 Real estate construction and land: Commercial 5,376 196 5,549 184 Commercial: Asset-based 30,881 — 29,677 — Venture capital 237 — 2,645 — Other commercial 6,052 51 7,946 1,377 Consumer 485 3 341 4 Total Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 26,222 $ 261 $ 73,696 $ 1,712 Real estate construction and land 5,376 196 10,803 184 Commercial 53,148 69 56,329 1,377 Consumer 485 3 341 4 Total $ 85,231 $ 529 $ 141,169 $ 3,277 _________________________ (1) For loans and leases reported as impaired at June 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 June 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: Income producing and other residential 3 $ 456 $ 456 3 $ 1,704 $ 645 Commercial: Asset-based 1 620 620 — — — Venture capital 4 13,971 14,972 4 5,236 5,236 Other commercial 3 107 107 2 31 31 Consumer — — — 1 27 27 Total 11 $ 15,154 $ 16,155 10 $ 6,998 $ 5,939 Six Months Ended June 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 $ — — $ — $ — Income producing and other residential 6 1,245 1,245 3 1,704 645 Commercial: Asset-based 1 620 620 — — — Venture capital 10 16,076 16,214 4 5,236 5,236 Other commercial 11 692 692 4 11,814 11,814 Consumer — — — 1 27 27 Total 29 $ 18,670 $ 18,771 12 $ 18,781 $ 17,722 During the three months ended June 30, 2019 , two venture capital loans totaling $447,000 and one other commercial loan of $81,000 were restructured in the preceding 12-month period and subsequently defaulted after being restructured. During the six months ended June 30, 2019 , two venture capital loans totaling $447,000 and three other commercial loans totaling $140,000 were restructured in the preceding 12-month period and subsequently defaulted after being restructured. During the three months ended June 30, 2018 , there were no loans restructured in the preceding 12-month period that subsequently defaulted after being restructured. Due the six months ended June 30, 2018 , one other commercial loan of $2.1 million was restructured in the preceding 12-month period and subsequently defaulted after being restructured.
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 June 30, 2019 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period $ 136,281 $ 36,861 $ 173,142 Charge-offs (17,637 ) — (17,637 ) Recoveries 6,393 — 6,393 Net charge-offs (11,244 ) — (11,244 ) Provision (negative provision) 10,000 (2,000 ) 8,000 Balance, end of period $ 135,037 $ 34,861 $ 169,898 Six Months Ended June 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 (21,102 ) — (21,102 ) Recoveries 9,667 — 9,667 Net charge-offs (11,435 ) — (11,435 ) Provision (negative provision) 14,000 (2,000 ) 12,000 Balance, end of period $ 135,037 $ 34,861 $ 169,898 Three Months Ended June 30, 2018 Allowance for Reserve for Total Loan and Unfunded Loan Allowance for Lease Losses Commitments Credit Losses (In thousands) Balance, beginning of period $ 134,275 $ 32,861 $ 167,136 Charge-offs (18,235 ) — (18,235 ) Recoveries 1,099 — 1,099 Net charge-offs (17,136 ) — (17,136 ) Provision 15,000 2,500 17,500 Balance, end of period $ 132,139 $ 35,361 $ 167,500 Six Months Ended June 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 (30,388 ) — (30,388 ) Recoveries 8,297 — 8,297 Net charge-offs (22,091 ) — (22,091 ) Provision 14,774 6,726 21,500 Balance, end of period $ 132,139 $ 35,361 $ 167,500 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 June 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 $ 45,754 $ 27,208 $ 61,496 $ 1,823 $ 136,281 Charge-offs (534 ) — (16,927 ) (176 ) (17,637 ) Recoveries 240 — 6,080 73 6,393 Net charge-offs (294 ) — (10,847 ) (103 ) (11,244 ) Provision (negative provision) 1,366 (830 ) 8,752 712 10,000 Balance, end of period $ 46,826 $ 26,378 $ 59,401 $ 2,432 $ 135,037 Six Months Ended June 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 (730 ) — (19,930 ) (442 ) (21,102 ) Recoveries 383 — 9,186 98 9,667 Net charge-offs (347 ) — (10,744 ) (344 ) (11,435 ) Provision (negative provision) 1,152 (1,831 ) 13,785 894 14,000 Balance, end of period $ 46,826 $ 26,378 $ 59,401 $ 2,432 $ 135,037 Ending Allowance by Impairment Methodology: Individually evaluated for impairment $ 260 $ — $ 4,482 $ — $ 4,742 Collectively evaluated for impairment $ 46,566 $ 26,378 $ 54,919 $ 2,432 $ 130,295 Ending Loans and Leases by Impairment Methodology: Individually evaluated for impairment $ 27,594 $ 5,376 $ 60,380 $ — $ 93,350 Collectively evaluated for impairment 8,048,432 2,370,754 7,513,934 446,382 18,379,502 Ending balance $ 8,076,026 $ 2,376,130 $ 7,574,314 $ 446,382 $ 18,472,852 Three Months Ended June 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 $ 40,158 $ 18,190 $ 73,780 $ 2,147 $ 134,275 Charge-offs (4,747 ) — (13,425 ) (63 ) (18,235 ) Recoveries 120 17 912 50 1,099 Net (charge-offs) recoveries (4,627 ) 17 (12,513 ) (13 ) (17,136 ) Provision (negative provision) 9,936 8,003 (2,461 ) (478 ) 15,000 Balance, end of period $ 45,467 $ 26,210 $ 58,806 $ 1,656 $ 132,139 Six Months Ended June 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 (7,345 ) — (22,949 ) (94 ) (30,388 ) Recoveries 1,777 26 6,399 95 8,297 Net (charge-offs) recoveries (5,568 ) 26 (16,550 ) 1 (22,091 ) Provision (negative provision) 10,984 13,129 (8,666 ) (673 ) 14,774 Balance, end of period $ 45,467 $ 26,210 $ 58,806 $ 1,656 $ 132,139 Ending Allowance by Impairment Methodology: Individually evaluated for impairment $ 472 $ — $ 8,480 $ — $ 8,952 Collectively evaluated for impairment $ 44,995 $ 26,210 $ 50,326 $ 1,656 $ 123,187 Ending Loans and Leases by Impairment Methodology: Individually evaluated for impairment $ 83,931 $ 15,998 $ 67,228 $ — $ 167,157 Collectively evaluated for impairment 7,482,443 1,858,028 6,998,884 378,680 16,718,035 Ending balance $ 7,566,374 $ 1,874,026 $ 7,066,112 $ 378,680 $ 16,885,192 _______________________________________ (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 six months ended June 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 Six Months Ended June 30, 2019 June 30, 2019 (In thousands) Component of leases receivable income: Interest income on net investments in leases $ 2,886 $ 6,026
Assets and Liabilities, Lessor	The following table presents the components of leases receivable as of the date indicated: June 30, 2019 (In thousands) Net investment in direct financing leases: Lease payments receivable $ 180,179 Unguaranteed residual assets 26,238 Deferred fees and other 849 Aggregate net investment in leases $ 207,266
Sales-type and Direct Financing Leases, Lease Receivable, Maturity	The following table presents maturities of leases receivable as of the date indicated: June 30, 2019 (In thousands) Period Ending December 31, 2019 $ 35,758 2020 71,453 2021 50,719 2022 19,333 2023 11,265 Thereafter 8,763 Total undiscounted cash flows 197,291 Less: Unearned income (17,112 ) Present value of lease payments $ 180,179

Foreclosed Assets (Tables)

Foreclosed Assets (Tables)	6 Months Ended
	Jun. 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: June 30, December 31, Property Type 2019 2018 (In thousands) Commercial real estate $ 253 $ 2,004 Single-family residence 953 953 Construction and land development 219 219 Multi‑family — 1,059 Total other real estate owned, net 1,425 4,235 Other foreclosed assets 47 1,064 Total foreclosed assets, net $ 1,472 $ 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 — Reductions related to sales (3,864 ) Balance, June 30, 2019 $ 1,472

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 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 Six Months Ended June 30, March 31, June 30, June 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 Balance, end of period 119,497 119,497 119,497 119,497 119,497 Accumulated Amortization: Balance, beginning of period (67,247 ) (62,377 ) (46,217 ) (62,377 ) (39,871 ) Amortization (4,870 ) (4,870 ) (5,587 ) (9,740 ) (11,933 ) Balance, end of period (72,117 ) (67,247 ) (51,804 ) (72,117 ) (51,804 ) Net CDI and CRI, end of period $ 47,380 $ 52,250 $ 67,693 $ 47,380 $ 67,693

Other Assets (Tables)

Other Assets (Tables)	6 Months Ended
	Jun. 30, 2019
Other Assets [Abstract]
Schedule of Other Assets	The following table presents the detail of our other assets as of the dates indicated: June 30, December 31, Other Assets 2019 2018 (In thousands) Cash surrender value of BOLI $ 196,745 $ 194,897 Operating lease ROU assets, net 119,086 — Interest receivable 83,308 88,754 LIHTC investments 63,151 59,507 CRA investments (1) 58,892 59,062 Taxes receivable 28,326 39,096 Prepaid expenses 19,576 18,006 Equity investments without readily determinable fair values 14,827 14,758 Equity warrants 3,931 4,793 Equity investments with readily determinable fair values 3,284 4,891 Other receivables/assets 20,993 39,132 Total other assets $ 612,119 $ 522,896 ________________________ (1) Includes equity investments without readily determinable fair values of $14.0 million and $12.5 million at June 30, 2019 and December 31, 2018 .

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 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: Six Months Ended June 30, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 16,408 ROU assets obtained in exchange for lease obligations: Operating leases $ 149,621 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 Six Months Ended June 30, 2019 June 30, 2019 (In thousands) Operating lease expense: Fixed costs $ 8,534 $ 16,836 Variable costs 46 70 Short-term lease costs 203 723 Sublease income (1,054 ) (2,180 ) Net lease expense $ 7,729 $ 15,449
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: June 30, 2019 (Dollars in thousands) Operating leases: Operating lease right-of-use assets, net $ 119,086 Operating lease liabilities $ 133,887 Weighted average remaining lease term (in years) 5.6 Weighted average discount rate 2.93 %
Schedule of Maturities of Operating Leases	The following table presents maturities of operating lease liabilities as of the date indicated: June 30, 2019 (In thousands) Period ending December 31, 2019 $ 16,440 2020 30,764 2021 27,348 2022 21,645 2023 18,735 Thereafter 31,185 Total operating lease liabilities 146,117 Less: Imputed interest (12,230 ) Present value of operating lease liabilities $ 133,887
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: June 30, 2019 (In thousands) Period Ending December 31, 2019 $ 18,620 2020 35,919 2021 28,199 2022 21,337 2023 18,604 Thereafter 50,214 Total undiscounted cash flows $ 172,893

Borrowings and Subordinated D_2

Borrowings and Subordinated Debentures (Tables)	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Schedule of debt	The following table summarizes our borrowings as of the dates indicated: June 30, 2019 December 31, 2018 Weighted Weighted Average Average Amount Rate Amount Rate (Dollars in thousands) Non‑recourse debt $ 59 7.50 % $ 114 7.50 % FHLB secured advances 1,522,000 2.52 % 1,040,000 2.56 % FHLB unsecured overnight advance 141,000 2.41 % 141,000 2.53 % AFX borrowings 250,000 2.43 % 190,000 2.56 % Total borrowings $ 1,913,059 2.50 % $ 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: June 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 5.51 % $ 10,310 5.89 % 8/15/2003 9/17/2033 3-month LIBOR + 3.10 Trust VI 10,310 5.46 % 10,310 5.84 % 9/3/2003 9/15/2033 3-month LIBOR + 3.05 Trust CII 5,155 5.36 % 5,155 5.74 % 9/17/2003 9/17/2033 3-month LIBOR + 2.95 Trust VII 61,856 5.33 % 61,856 5.27 % 2/5/2004 4/23/2034 3-month LIBOR + 2.75 Trust CIII 20,619 4.10 % 20,619 4.48 % 8/15/2005 9/15/2035 3-month LIBOR + 1.69 Trust FCCI 16,495 4.01 % 16,495 4.39 % 1/25/2007 3/15/2037 3-month LIBOR + 1.60 Trust FCBI 10,310 3.96 % 10,310 4.34 % 9/30/2005 12/15/2035 3-month LIBOR + 1.55 Trust CS 2005-1 82,475 4.36 % 82,475 4.74 % 11/21/2005 12/15/2035 3-month LIBOR + 1.95 Trust CS 2005-2 128,866 4.53 % 128,866 4.47 % 12/14/2005 1/30/2036 3-month LIBOR + 1.95 Trust CS 2006-1 51,545 4.53 % 51,545 4.47 % 2/22/2006 4/30/2036 3-month LIBOR + 1.95 Trust CS 2006-2 51,550 4.53 % 51,550 4.47 % 9/27/2006 10/30/2036 3-month LIBOR + 1.95 Trust CS 2006-3 (1) 29,314 1.74 % 29,556 1.73 % 9/29/2006 10/30/2036 3-month EURIBOR + 2.05 Trust CS 2006-4 16,470 4.53 % 16,470 4.47 % 12/5/2006 1/30/2037 3-month LIBOR + 1.95 Trust CS 2006-5 6,650 4.53 % 6,650 4.47 % 12/19/2006 1/30/2037 3-month LIBOR + 1.95 Trust CS 2007-2 39,177 4.53 % 39,177 4.47 % 6/13/2007 7/30/2037 3-month LIBOR + 1.95 Gross subordinated debentures 541,102 4.45 % 541,344 4.51 % Unamortized discount (2) (84,990 ) (87,498 ) Net subordinated debentures $ 456,112 $ 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)	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments disclosure	June 30, December 31, 2019 2018 (In thousands) Loan commitments to extend credit $ 7,610,899 $ 7,528,248 Standby letters of credit 387,012 364,210 Commitments to contribute capital to low income housing project partnerships and small business investment companies 109,103 101,991 Commitments to contribute capital to private equity funds 50 50 Total $ 8,107,064 $ 7,994,499

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 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 June 30, 2019 Measured on a Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Securities available‑for‑sale: Agency residential CMOs $ 1,150,474 $ — $ 1,150,474 $ — Agency commercial MBS 1,058,846 — 1,058,846 — Municipal securities 736,570 — 736,570 — Agency residential MBS 351,360 — 351,360 — Asset-backed securities 227,121 — 193,624 33,497 Private label residential CMOs 112,037 — 105,138 6,899 Collateralized loan obligations 93,802 — 93,802 — SBA securities 51,812 — 51,812 — Corporate debt securities 20,034 — 20,034 — U.S. Treasury securities 5,188 5,188 — — Total securities available-for-sale 3,807,244 5,188 3,761,660 40,396 Equity warrants 3,931 — — 3,931 Other derivative assets 1,459 — 1,459 — Equity investments with readily determinable fair values 3,284 3,284 — — Total recurring assets $ 3,815,918 $ 8,472 $ 3,763,119 $ 44,327 Derivative liabilities $ 317 $ — $ 317 $ — 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: June 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 3.6% - 100.0% 11.2% 12.0% - 15.0% 13.7% Annual default rates (1) 0.4% - 82.0% 1.9% 2.0% 2.0% Loss severity rates (1) 1.5% - 145.8% 57.8% 60.0% 60.0% Discount rates 2.5% - 9.3% 6.4% 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: June 30, 2019 Equity Warrants Weighted Average Unobservable Inputs Input Volatility 16.7% Risk-free interest rate 1.7% Remaining life assumption (in years) 3.36 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: June 30, 2019 Valuation Unobservable Weighted Asset Fair Value Technique Inputs Range Average (In thousands) Impaired loans $ 17,073 Discounted cash flows Discount rates 3.75% - 8.00% 6.48% Impaired loans 6,444 Third party appraisals No discounts Total non-recurring Level 3 $ 23,517
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 224 (56 ) 3,493 Total included in other comprehensive income (64 ) 559 — Issuances — — 161 Sales and dispositions (1) — — (4,453 ) Net settlements (549 ) (6,951 ) — Transfers to Level 1 — — (63 ) Balance, June 30, 2019 $ 6,899 $ 33,497 $ 3,931
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 June 30, 2019 Measured on a Non‑Recurring Basis Total Level 1 Level 2 Level 3 (In thousands) Impaired loans $ 23,517 $ — $ — $ 23,517 Total non-recurring $ 23,517 $ — $ — $ 23,517 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 Six Months Ended Losses on Assets June 30, June 30, Measured on a Non‑Recurring Basis 2019 2018 2019 2018 (In thousands) Impaired loans $ 1,842 $ 12,076 $ 3,038 $ 15,994 OREO — — — 65 Total losses $ 1,842 $ 12,076 $ 3,038 $ 16,059
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: June 30, 2019 Carrying Estimated Fair Value Amount Total Level 1 Level 2 Level 3 ( In thousands ) Financial Assets: Cash and due from banks $ 185,075 $ 185,075 $ 185,075 $ — $ — Interest‑earning deposits in financial institutions 422,663 422,663 422,663 — — Securities available‑for‑sale 3,807,244 3,807,244 5,188 3,761,660 40,396 Investment in FHLB stock 43,146 43,146 — 43,146 — Loans and leases held for investment, net 18,337,815 17,841,445 — — 17,841,445 Equity warrants 3,931 3,931 — — 3,931 Other derivative assets 1,459 1,459 — 1,459 — Equity investments with readily determinable fair values 3,284 3,284 3,284 — — Financial Liabilities: Core deposits 15,617,488 15,617,488 — 15,617,488 — Non-core non-maturity deposits 436,833 436,833 — 436,833 — Time deposits 2,751,435 2,749,828 — 2,749,828 — Borrowings 1,913,059 1,913,059 1,903,000 10,059 — Subordinated debentures 456,112 439,635 — 439,635 — Derivative liabilities 317 317 — 317 — 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)	6 Months Ended
	Jun. 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 Six Months Ended June 30, March 31, June 30, June 30, 2019 2019 2018 2019 2018 (Dollars in thousands, except per share data) Basic Earnings Per Share: Net earnings $ 128,125 $ 112,604 $ 115,735 $ 240,729 $ 234,011 Less: Earnings allocated to unvested restricted stock (1) (1,190 ) (1,163 ) (1,348 ) (2,343 ) (2,469 ) Net earnings allocated to common shares $ 126,935 $ 111,441 $ 114,387 $ 238,386 $ 231,542 Weighted-average basic shares and unvested restricted stock outstanding 120,042 122,227 126,082 121,128 126,780 Less: Weighted-average unvested restricted stock outstanding (1,462 ) (1,352 ) (1,466 ) (1,407 ) (1,439 ) Weighted-average basic shares outstanding 118,580 120,875 124,616 119,721 125,341 Basic earnings per share $ 1.07 $ 0.92 $ 0.92 $ 1.99 $ 1.85 Diluted Earnings Per Share: Net earnings allocated to common shares $ 126,935 $ 111,441 $ 114,387 $ 238,386 $ 231,542 Weighted-average basic shares outstanding 118,580 120,875 124,616 119,721 125,341 Diluted earnings per share $ 1.07 $ 0.92 $ 0.92 $ 1.99 $ 1.85 ________________________ (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)	6 Months Ended
	Jun. 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 June 30, 2019 Three Months Ended June 30, 2018 Total Revenue from Total Revenue from Recorded Contracts with Recorded Contracts with Revenue Customers Revenue Customers (In thousands) Total interest income $ 314,533 $ — $ 288,514 $ — Noninterest income: Service charges on deposit accounts 3,771 3,771 4,265 4,265 Other commissions and fees 11,590 5,158 11,767 5,101 Leased equipment income 9,182 — 9,790 — Gain on sale of loans 326 — 106 — Gain on sale of securities 22,192 — 253 — Other income 3,832 454 13,457 436 Total noninterest income 50,893 9,383 39,638 9,802 Total revenue $ 365,426 $ 9,383 $ 328,152 $ 9,802
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 June 30, 2019 2018 (In thousands) Products and services transferred at a point in time $ 4,987 $ 4,930 Products and services transferred over time 4,396 4,872 Total revenue from contracts with customers $ 9,383 $ 9,802
Contract with Customer, Asset and Liability	The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers: June 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" $ 556 $ 621

Recently Issued Accounting St_2

Recently Issued Accounting Standards (Tables)	6 Months Ended
	Jun. 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 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. Receivables arising from operating leases are not within the scope of CECL. 3. 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 other-than-temporary impairment 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 three preliminary calculations with two 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. The ultimate impact is influenced by our portfolio characteristics, of which the vast majority is comprised of short-duration commercial loans; the macroeconomic conditions and forecasts at adoption; and other management judgments. 5. We plan to adopt this new standard on January 1, 2020. The new standard will be significant to the policies, processes, and methodology used to determine credit losses; however, we are not yet in a position to disclose the quantitative effect on the Company's consolidated financial position and results of operations as the calculations and models continue to be evaluated and assumptions are subject to change. 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		3 Months Ended		6 Months Ended
		Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)	Jun. 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]

Restricted Cash Balances (Detai

Restricted Cash Balances (Details Textual) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Restricted Cash [Abstract]
Restricted Cash and Cash Equivalents	$ 108.8	$ 77
Pledged Cash for Derivative Contracts	$ 2.1	$ 2.6

Investment Securities (Details)

Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	$ 3,705,268	$ 4,017,909
Available-for-sale Securities, Gross Unrealized Gain	103,919	31,812
Available-for-sale Securities, Gross Unrealized Loss	(1,943)	(40,290)
Securities available‑for‑sale	3,807,244	4,009,431
Government agency and government-sponsored enterprise pass through securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	343,131	281,486
Available-for-sale Securities, Gross Unrealized Gain	8,381	1,902
Available-for-sale Securities, Gross Unrealized Loss	(152)	(2,300)
Securities available‑for‑sale	351,360	281,088
Government agency and government-sponsored enterprise collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	1,125,267	634,774
Available-for-sale Securities, Gross Unrealized Gain	25,513	3,448
Available-for-sale Securities, Gross Unrealized Loss	(306)	(5,372)
Securities available‑for‑sale	1,150,474	632,850
Private label collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	108,526	101,313
Available-for-sale Securities, Gross Unrealized Gain	3,610	1,985
Available-for-sale Securities, Gross Unrealized Loss	(99)	(2,093)
Securities available‑for‑sale	112,037	101,205
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	700,470	1,298,514
Available-for-sale Securities, Gross Unrealized Gain	36,594	21,000
Available-for-sale Securities, Gross Unrealized Loss	(494)	(7,320)
Securities available‑for‑sale	736,570	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	1,033,895	1,133,846
Available-for-sale Securities, Gross Unrealized Gain	25,046	383
Available-for-sale Securities, Gross Unrealized Loss	(95)	(21,525)
Securities available‑for‑sale	1,058,846	1,112,704
US Treasury Securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	4,983	401,056
Available-for-sale Securities, Gross Unrealized Gain	205	2,437
Available-for-sale Securities, Gross Unrealized Loss	0	(88)
Securities available‑for‑sale	5,188	403,405
Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	226,693	81,762
Available-for-sale Securities, Gross Unrealized Gain	866	104
Available-for-sale Securities, Gross Unrealized Loss	(438)	(481)
Securities available‑for‑sale	227,121	81,385
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	94,149	0
Available-for-sale Securities, Gross Unrealized Gain	0	0
Available-for-sale Securities, Gross Unrealized Loss	(347)	0
Securities available‑for‑sale	93,802	0
SBA asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Total securities available-for-sale	51,154	68,158
Available-for-sale Securities, Gross Unrealized Gain	670	0
Available-for-sale Securities, Gross Unrealized Loss	(12)	(1,111)
Securities available‑for‑sale	51,812	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	3,034	553
Available-for-sale Securities, Gross Unrealized Loss	0	0
Securities available‑for‑sale	$ 20,034	$ 17,553

Investment Securities (Details

Investment Securities (Details 1) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	$ 267,326	$ 316,746
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	(1,052)	(2,032)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	96,991	1,706,835
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(891)	(38,258)
Unrealized Losses on Securities Available-for-Sale, Fair Value	364,317	2,023,581
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(1,943)	(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	9,533	85,245
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(152)	(2,131)
Unrealized Losses on Securities Available-for-Sale, Fair Value	9,533	145,409
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(152)	(2,300)
Government agency and government-sponsored enterprise collateralized mortgage obligations
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	85,397	69,859
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	(267)	(326)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	7,696	164,097
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(39)	(5,046)
Unrealized Losses on Securities Available-for-Sale, Fair Value	93,093	233,956
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(306)	(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	18,008	49,237
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(99)	(1,262)
Unrealized Losses on Securities Available-for-Sale, Fair Value	18,008	81,407
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(99)	(2,093)
Collateralized loan obligations
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	93,802
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	(347)
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	93,802
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(347)
Municipal securities
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	4,044	52,386
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	(12)	(238)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	25,874	284,915
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(482)	(7,082)
Unrealized Losses on Securities Available-for-Sale, Fair Value	29,918	337,301
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(494)	(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	0	40,641
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	0	(341)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	29,902	1,020,684
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(95)	(21,184)
Unrealized Losses on Securities Available-for-Sale, Fair Value	29,902	1,061,325
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(95)	(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	84,083	11,548
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	(426)	(38)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	3,915	35,859
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(12)	(443)
Unrealized Losses on Securities Available-for-Sale, Fair Value	87,998	47,407
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	(438)	(481)
SBA asset-backed securities
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value	0	249
Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses	0	(1)
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value	2,063	66,798
Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses	(12)	(1,110)
Unrealized Losses on Securities Available-for-Sale, Fair Value	2,063	67,047
Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses	$ (12)	$ (1,111)

Investment Securities (Detail_2

Investment Securities (Details 2) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 14,660
Due after one year through five years	194,493
Due after five years through ten years	1,028,156
Due after ten years	2,467,959
Total securities available-for-sale	3,705,268	$ 4,017,909
Fair Value
Due in one year or less	14,647
Due after one year through five years	197,141
Due after five years through ten years	1,054,251
Due after ten years	2,541,205
Total securities available-for-sale	$ 3,807,244	$ 4,009,431

Investment Securities (Detail_3

Investment Securities (Details 3) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Taxable interest	$ 20,944	$ 19,742	$ 17,106	$ 40,686	$ 31,705
Non-taxable interest	7,547	9,593	10,276	17,140	21,383
Dividend income	457	345	348	802	780
Total interest income on investment securities	$ 28,948	$ 29,680	$ 27,730	$ 58,628	$ 53,868

Investment Securities (Detail_4

Investment Securities (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Debt Securities, Available-for-sale [Line Items]
AFS securities pledged as collateral	$ 493,800,000		$ 493,800,000
Proceeds from sales of securities available-for-sale			$ 1,410,510,000	$ 368,775,000
Gross realized gains on sale of securities	24,200,000	$ 300,000
Gross realized losses on sale of securities	(2,000,000)	(60,000)
Available-for-sale Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales of securities available-for-sale	$ 980,400,000	$ 62,300,000

Loans and Leases (Details)

Loans and Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment	$ 18,532,740		$ 18,026,365
Deferred fees, net	(59,888)		(68,652)
Loans held for investment, net	18,472,852		17,957,713
Allowance for loan and lease losses	(135,037)	$ (136,281)	(132,472)	$ (132,139)	$ (134,275)
Total loans and leases held for investment, net	18,337,815		17,825,241
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment, net	18,472,852		17,957,713	16,885,192
Allowance for loan and lease losses	(135,037)	(136,281)	(132,472)	(132,139)	(134,275)	$ (139,456)
Real Estate Mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment	8,087,586
Loans held for investment, net	8,076,026		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	8,076,026		7,918,141	7,566,374
Allowance for loan and lease losses	(46,826)	(45,754)	(46,021)	(45,467)	(40,158)	(40,051)
Real Estate Construction and Land
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment	2,405,073
Loans held for investment, net	2,376,130		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	2,376,130		2,233,656	1,874,026
Allowance for loan and lease losses	(26,378)	(27,208)	(28,209)	(26,210)	(18,190)	(13,055)
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment	7,593,728
Loans held for investment, net	7,574,314		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	7,574,314		7,404,595	7,066,112
Allowance for loan and lease losses	(59,401)	(61,496)	(56,360)	(58,806)	(73,780)	(84,022)
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans and leases held for investment	446,353
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	446,382		401,321	378,680
Allowance for loan and lease losses	$ (2,432)	$ (1,823)	$ (1,882)	$ (1,656)	$ (2,147)	$ (2,328)

Loans and Leases (Details 1)

Loans and Leases (Details 1) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Delinquent loans in loan portfolio
30-89 Days Past Due	$ 29,002	$ 6,600
90 or More Days Past Due	9,775	10,700
Total Past Due	38,777
Current	18,434,075
Loans held for investment, net	18,472,852	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	18,472,852	17,957,713	$ 16,885,192
Real Estate Mortgage
Delinquent loans in loan portfolio
30-89 Days Past Due	8,208
90 or More Days Past Due	7,054
Total Past Due	15,262
Current	8,060,764
Loans held for investment, net	8,076,026	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	8,076,026	7,918,141	7,566,374
Real Estate Mortgage | Commercial
Delinquent loans in loan portfolio
30-89 Days Past Due	4,516
90 or More Days Past Due	6,632
Total Past Due	11,148
Current	4,424,126
Loans held for investment, net	4,435,274	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	3,692
90 or More Days Past Due	422
Total Past Due	4,114
Current	3,636,638
Loans held for investment, net	3,640,752	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	4,672
90 or More Days Past Due	0
Total Past Due	4,672
Current	2,371,458
Loans held for investment, net	2,376,130	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	2,376,130	2,233,656	1,874,026
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	972,891
Loans held for investment, net	972,891	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	4,672
90 or More Days Past Due	0
Total Past Due	4,672
Current	1,398,567
Loans held for investment, net	1,403,239	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	15,158
90 or More Days Past Due	2,552
Total Past Due	17,710
Current	7,556,604
Loans held for investment, net	7,574,314	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	7,574,314	7,404,595	7,066,112
Commercial | Asset-based
Delinquent loans in loan portfolio
30-89 Days Past Due	12,382
90 or More Days Past Due	1,624
Total Past Due	14,006
Current	3,592,001
Loans held for investment, net	3,606,007	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	447
90 or More Days Past Due	0
Total Past Due	447
Current	2,194,296
Loans held for investment, net	2,194,743	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	2,329
90 or More Days Past Due	928
Total Past Due	3,257
Current	1,770,307
Loans held for investment, net	1,773,564	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	964
90 or More Days Past Due	169
Total Past Due	1,133
Current	445,249
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	$ 446,382	$ 401,321	$ 378,680

Loans and Leases (Details 2)

Loans and Leases (Details 2) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Financing Receivable, Impaired [Line Items]
Nonaccrual	$ 81,265	$ 79,333
Loans held for investment	18,472,852	17,957,713
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		79,333
Loans held for investment	18,472,852	17,957,713	$ 16,885,192
Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	18,391,587
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	19,895
Loans held for investment	8,076,026	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	8,076,026	7,918,141	7,566,374
Real Estate Mortgage | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	8,056,131
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	17,012
Loans held for investment	4,435,274	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	4,418,262
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	2,883
Loans held for investment	3,640,752	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	3,637,869
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	390
Loans held for investment	2,376,130	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	2,376,130	2,233,656	1,874,026
Real Estate Construction and Land | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	2,375,740
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	390
Loans held for investment	972,891	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	972,501
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	1,403,239	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	1,403,239
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	60,536
Loans held for investment	7,574,314	7,404,595
Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual		60,003
Loans held for investment	7,574,314	7,404,595	7,066,112
Commercial | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	7,513,778
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	32,236
Loans held for investment	3,606,007	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	3,573,771
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	22,501
Loans held for investment	2,194,743	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	2,172,242
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	5,799
Loans held for investment	1,773,564	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	1,767,765
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	444
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	446,382	401,321	$ 378,680
Consumer | Performing
Financing Receivable, Impaired [Line Items]
Loans held for investment	$ 445,938
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	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Financing Receivable, Past Due [Line Items]
Loans held for investment	$ 18,472,852	$ 17,957,713
Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	190,979	237,110
Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	239,304	261,398
Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	18,042,569	17,459,205
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment	18,472,852	17,957,713	$ 16,885,192
Real Estate Mortgage
Financing Receivable, Past Due [Line Items]
Loans held for investment	8,076,026	7,918,141
Real Estate Mortgage | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	41,619	68,255
Real Estate Mortgage | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	52,832	75,753
Real Estate Mortgage | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	7,981,575	7,774,133
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment	8,076,026	7,918,141	7,566,374
Real Estate Mortgage | Commercial
Financing Receivable, Past Due [Line Items]
Loans held for investment	4,435,274	4,824,298
Real Estate Mortgage | Commercial | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	32,926	57,734
Real Estate Mortgage | Commercial | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	52,477	74,785
Real Estate Mortgage | Commercial | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	4,349,871	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	3,640,752	3,093,843
Real Estate Mortgage | Residential Real Estate | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	8,693	10,521
Real Estate Mortgage | Residential Real Estate | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	355	968
Real Estate Mortgage | Residential Real Estate | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	3,631,704	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	2,376,130	2,233,656
Real Estate Construction and Land | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	390	442
Real Estate Construction and Land | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	5,268	8,568
Real Estate Construction and Land | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,370,472	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	2,376,130	2,233,656	1,874,026
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable
Financing Receivable, Past Due [Line Items]
Loans held for investment	972,891	912,583
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	390	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	972,501	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	1,403,239	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	5,268	1,527
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,397,971	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	7,574,314	7,404,595
Commercial | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	148,395	167,214
Commercial | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	180,341	176,062
Commercial | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	7,245,578	7,061,319
Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment	7,574,314	7,404,595	7,066,112
Commercial | Asset-based
Financing Receivable, Past Due [Line Items]
Loans held for investment	3,606,007	3,305,421
Commercial | Asset-based | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	41,151	45,957
Commercial | Asset-based | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	48,324	48,338
Commercial | Asset-based | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	3,516,532	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	2,194,743	2,038,748
Commercial | Venture Capital Loans | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	42,105	28,731
Commercial | Venture Capital Loans | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	68,426	77,588
Commercial | Venture Capital Loans | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	2,084,212	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	1,773,564	2,060,426
Commercial | Other Commercial | Classified
Financing Receivable, Past Due [Line Items]
Loans held for investment	65,139	92,526
Commercial | Other Commercial | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	63,591	50,136
Commercial | Other Commercial | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	1,644,834	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	575	1,199
Consumer | Special Mention
Financing Receivable, Past Due [Line Items]
Loans held for investment	863	1,015
Consumer | Pass
Financing Receivable, Past Due [Line Items]
Loans held for investment	444,944	399,107
Consumer | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Past Due [Line Items]
Loans held for investment	$ 446,382	$ 401,321	$ 378,680

Loans and Leases (Details 4)

Loans and Leases (Details 4) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual loans and leases	$ 81,265	$ 79,333
Performing Restructured Loans	16,464	17,701
Total Impaired Loans and Leases	97,729	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	19,895
Performing Restructured Loans	10,457
Total Impaired Loans and Leases	30,352
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	390
Performing Restructured Loans	4,986
Total Impaired Loans and Leases	5,376
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	60,536
Performing Restructured Loans	931
Total Impaired Loans and Leases	61,467
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	444
Performing Restructured Loans	90
Total Impaired Loans and Leases	$ 534
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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance	$ 4,742		$ 4,742
Total Impaired Loans and Leases	97,729		97,729		$ 97,034
Impaired Financing Receivable, Unpaid Principal Balance	181,520		181,520
Impaired Financing Receivable, Average Recorded Investment	90,257		85,231
Impaired Financing Receivable, Interest Income, Accrual Method	262		529
Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance	260		260
Total Impaired Loans and Leases	30,352		30,352
Impaired Financing Receivable, Unpaid Principal Balance	47,482		47,482
Impaired Financing Receivable, Average Recorded Investment	27,013		26,222
Impaired Financing Receivable, Interest Income, Accrual Method	134		261
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	5,376		5,376
Impaired Financing Receivable, Unpaid Principal Balance	5,419		5,419
Impaired Financing Receivable, Average Recorded Investment	5,376		5,376
Impaired Financing Receivable, Interest Income, Accrual Method	98		196
Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Related Allowance	4,482		4,482
Total Impaired Loans and Leases	61,467		61,467
Impaired Financing Receivable, Unpaid Principal Balance	127,917		127,917
Impaired Financing Receivable, Average Recorded Investment	57,357		53,148
Impaired Financing Receivable, Interest Income, Accrual Method	29		69
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	534		534
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	702		702
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	511		485
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	1		3
Total Impaired Loans and Leases	534		534
Impaired Financing Receivable, Unpaid Principal Balance	702		702
Impaired Financing Receivable, Average Recorded Investment	511		485
Impaired Financing Receivable, Interest Income, Accrual Method	1		3
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		$ 153,707		$ 141,169
Impaired Financing Receivable, Interest Income, Accrual Method		1,323		3,277
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		77,231		73,696
Impaired Financing Receivable, Interest Income, Accrual Method		893		1,712
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		15,999		10,803
Impaired Financing Receivable, Interest Income, Accrual Method		93		184
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		60,122		56,329
Impaired Financing Receivable, Interest Income, Accrual Method		335		1,377
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		355		341
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		2		4
Total Impaired Loans and Leases					1,148
Impaired Financing Receivable, Unpaid Principal Balance					1,470
Impaired Financing Receivable, Average Recorded Investment		355		341
Impaired Financing Receivable, Interest Income, Accrual Method		2		4
Asset-based | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	32,236		32,236
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	49,853		49,853
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	31,148		30,881
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	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with Related Allowance, Related Allowance	0		0		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 No Related Allowance, Average Recorded Investment		29,677		29,677
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	22,265		22,265
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	24,353		24,353
Impaired Financing Receivable, with Related Allowance, Related Allowance	4,482		4,482
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	237		237
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	26,531		26,531
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	19,242		15,359
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	237		237
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		18,449		15,715
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		2,800		2,645
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	618		618
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	618		618
Impaired Financing Receivable, with Related Allowance, Related Allowance	0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	6,111		6,111
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	26,562		26,562
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	619		619
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	9		18
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	6,111		6,052
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	20		51
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		688		346
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		8,508		7,946
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		335		1,377
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	5,376		5,376
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	5,419		5,419
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	5,376		5,376
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	98		196
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		5,549		5,549
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		93		184
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		10,450
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	493		493
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	493		493
Impaired Financing Receivable, with Related Allowance, Related Allowance	69		69
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	19,994		19,994
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	34,694		34,694
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	493		493
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	8		16
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	16,716		16,016
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	54		106
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		7,786		7,786
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		103		204
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		58,733		55,214
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		725		1,378
Residential Real Estate | Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	2,066		2,066
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	2,061		2,061
Impaired Financing Receivable, with Related Allowance, Related Allowance	191		191
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	7,799		7,799
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	10,234		10,234
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	2,066		2,066
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	15		29
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	7,738		7,647
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	$ 57		$ 110
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		2,419		2,419
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		21		42
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		8,293		8,277
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		$ 44		$ 88

Loans and Leases (Details 6)

Loans and Leases (Details 6) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)contract	Jun. 30, 2018USD ($)contract	Jun. 30, 2019USD ($)contract	Jun. 30, 2018USD ($)contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	11	10	29	12
Pre-Modification Outstanding Recorded Investment	$ 15,154	$ 6,998	$ 18,670	$ 18,781
Post-Modification Outstanding Recorded Investment	$ 16,155	$ 5,939	$ 18,771	$ 17,722
Real Estate Mortgage | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	3	3	1	0
Pre-Modification Outstanding Recorded Investment	$ 456	$ 1,704	$ 37	$ 0
Post-Modification Outstanding Recorded Investment	$ 456	$ 645	$ 0	$ 0
Real Estate Mortgage | Residential Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract			6	3
Pre-Modification Outstanding Recorded Investment			$ 1,245	$ 1,704
Post-Modification Outstanding Recorded Investment			$ 1,245	$ 645
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	1		3	1
Commercial | Asset-based
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	1	0	1	0
Pre-Modification Outstanding Recorded Investment	$ 620	$ 0	$ 620	$ 0
Post-Modification Outstanding Recorded Investment	$ 620	$ 0	$ 620	$ 0
Commercial | Venture Capital Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	4	4	10	4
Pre-Modification Outstanding Recorded Investment	$ 13,971	$ 5,236	$ 16,076	$ 5,236
Post-Modification Outstanding Recorded Investment	$ 14,972	$ 5,236	$ 16,214	$ 5,236
Commercial | Other Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	3	2	11	4
Pre-Modification Outstanding Recorded Investment	$ 107	$ 31	$ 692	$ 11,814
Post-Modification Outstanding Recorded Investment	$ 107	$ 31	$ 692	$ 11,814
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | contract	0	1	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 27	$ 0	$ 27
Post-Modification Outstanding Recorded Investment	$ 0	$ 27	$ 0	$ 27

Loans and Leases (Details 7)

Loans and Leases (Details 7) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Direct Financing Lease, Lease Income [Abstract]
Interest income on net investments in leases	$ 2,886	$ 6,026
Direct Financing Lease, Net Investment in Leases [Abstract]
Lease payments receivable	180,179
Unguaranteed residual assets	26,238
Deferred fees and other	849
Aggregate net investment in leases	207,266
Sales-type and Direct Financing Leases, Lease Receivable, Rolling Maturity [Abstract]
2019	35,758
2020	71,453
2021	50,719
2022	19,333
2023	11,265
Thereafter	8,763
Total undiscounted cash flows	197,291
Less: Unearned income	(17,112)
Present value of lease payments	$ 180,179

Loans and Leases (Details 8)

Loans and Leases (Details 8) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 136,281	$ 134,275	$ 132,472
Charge-offs	(17,637)	(18,235)	(21,102)
Recoveries	6,393	1,099	9,667
Allowance for Loan and Lease Losses, Net charge-offs	(11,244)	(17,136)	(11,435)
Provision	10,000	15,000	14,000
Balance, end of period	135,037	132,139	135,037	$ 132,139
The ending balance of the loan and lease portfolio is composed of loans and leases:
Ending balance of loans and leases	18,472,852		18,472,852		$ 17,957,713
Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	136,281	134,275	132,472	139,456
Charge-offs	(17,637)	(18,235)	(21,102)	(30,388)
Recoveries	6,393	1,099	9,667	8,297
Allowance for Loan and Lease Losses, Net charge-offs				(22,091)
Provision	10,000	15,000	14,000	14,774
Balance, end of period	135,037	132,139	135,037	132,139
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	4,742	8,952	4,742	8,952
Collectively evaluated for impairment	130,295	123,187	130,295	123,187
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	93,350	167,157	93,350	167,157
Collectively evaluated for impairment	18,379,502	16,718,035	18,379,502	16,718,035
Ending balance of loans and leases	18,472,852	16,885,192	18,472,852	16,885,192	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	(294)	(4,627)	(347)	(5,568)
The ending balance of the loan and lease portfolio is composed of loans and leases:
Ending balance of loans and leases	8,076,026		8,076,026		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	45,754	40,158	46,021	40,051
Charge-offs	(534)	(4,747)	(730)	(7,345)
Recoveries	240	120	383	1,777
Provision	1,366	9,936	1,152	10,984
Balance, end of period	46,826	45,467	46,826	45,467
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	260	472	260	472
Collectively evaluated for impairment	46,566	44,995	46,566	44,995
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	27,594	83,931	27,594	83,931
Collectively evaluated for impairment	8,048,432	7,482,443	8,048,432	7,482,443
Ending balance of loans and leases	8,076,026	7,566,374	8,076,026	7,566,374	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	17	0	26
The ending balance of the loan and lease portfolio is composed of loans and leases:
Ending balance of loans and leases	2,376,130		2,376,130		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	27,208	18,190	28,209	13,055
Charge-offs	0	0	0	0
Recoveries	0	17	0	26
Provision	(830)	8,003	(1,831)	13,129
Balance, end of period	26,378	26,210	26,378	26,210
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	26,378	26,210	26,378	26,210
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	5,376	15,998	5,376	15,998
Collectively evaluated for impairment	2,370,754	1,858,028	2,370,754	1,858,028
Ending balance of loans and leases	2,376,130	1,874,026	2,376,130	1,874,026	2,233,656
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for Loan and Lease Losses, Net charge-offs	(10,847)	(12,513)	(10,744)	(16,550)
The ending balance of the loan and lease portfolio is composed of loans and leases:
Ending balance of loans and leases	7,574,314		7,574,314		7,404,595
Commercial | Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	61,496	73,780	56,360	84,022
Charge-offs	(16,927)	(13,425)	(19,930)	(22,949)
Recoveries	6,080	912	9,186	6,399
Provision	8,752	(2,461)	13,785	(8,666)
Balance, end of period	59,401	58,806	59,401	58,806
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	4,482	8,480	4,482	8,480
Collectively evaluated for impairment	54,919	50,326	54,919	50,326
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	60,380	67,228	60,380	67,228
Collectively evaluated for impairment	7,513,934	6,998,884	7,513,934	6,998,884
Ending balance of loans and leases	7,574,314	7,066,112	7,574,314	7,066,112	7,404,595
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for Loan and Lease Losses, Net charge-offs	(103)	(13)	(344)	1
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	1,823	2,147	1,882	2,328
Charge-offs	(176)	(63)	(442)	(94)
Recoveries	73	50	98	95
Provision	712	(478)	894	(673)
Balance, end of period	2,432	1,656	2,432	1,656
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	2,432	1,656	2,432	1,656
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	446,382	378,680	446,382	378,680
Ending balance of loans and leases	446,382	378,680	446,382	378,680	$ 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	$ (11,244)	$ (17,136)	$ (11,435)	$ (22,091)

Loans and Leases (Details 9)

Loans and Leases (Details 9) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, beginning of period	$ 136,281	$ 132,472	$ 134,275	$ 132,472
Reserve for Unfunded Loan Commitments, Balance, beginning of period	36,861	36,861	32,861	36,861	$ 28,635
Allowance for Credit Losses, Balance, beginning of period	173,142	169,333	167,136	169,333
Allowance for Loan and Lease Losses, Charge-offs	(17,637)		(18,235)	(21,102)
Reserve for Unfunded Loan Commitments, Charge-offs	0		0	0	0
Allowance for Credit Losses, Charge-offs	(17,637)		(18,235)	(21,102)
Allowance for Loan and Lease Loss, Recoveries	6,393		1,099	9,667
Reserve for Unfunded Loan Commitments, Recoveries	0		0	0	0
Allowance for Credit Losses, Recoveries	6,393		1,099	9,667
Allowance for Loan and Lease Losses, Net charge-offs	(11,244)		(17,136)	(11,435)
Reserve for Unfunded Loan Commitments, Net charge-offs	0		0	0	0
Allowance For Credit Losses, Net charge-offs	(11,244)		(17,136)	(11,435)
Allowance for Loan and Lease Losses, Provision (negative provision)	10,000		15,000	14,000
Reserve for Unfunded Commitments, Provision (negative provision)	2,000		(2,500)	2,000	(6,726)
Allowance for Credit Losses, Provision (negative provision)	8,000	4,000	17,500	12,000	21,500
Balance, end of period	135,037	136,281	132,139	135,037	132,139
Reserve for Unfunded Loan Commitments, Balance, end of period	34,861	36,861	35,361	34,861	35,361
Allowance for Credit Losses, Balance, end of period	169,898	173,142	167,500	169,898	167,500
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, beginning of period	136,281	132,472	134,275	132,472	139,456
Allowance for Credit Losses, Balance, beginning of period					168,091
Allowance for Loan and Lease Losses, Charge-offs	(17,637)		(18,235)	(21,102)	(30,388)
Allowance for Credit Losses, Charge-offs					(30,388)
Allowance for Loan and Lease Loss, Recoveries	6,393		1,099	9,667	8,297
Allowance for Credit Losses, Recoveries					8,297
Allowance for Loan and Lease Losses, Net charge-offs					(22,091)
Allowance For Credit Losses, Net charge-offs					(22,091)
Allowance for Loan and Lease Losses, Provision (negative provision)	10,000		15,000	14,000	14,774
Allowance for Credit Losses, Provision (negative provision)					21,500
Balance, end of period	$ 135,037	$ 136,281	132,139	$ 135,037	132,139
Allowance for Credit Losses, Balance, end of period			$ 167,500		167,500
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		6 Months Ended
	Jun. 30, 2019USD ($)contract	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)contract	Jun. 30, 2018USD ($)contract	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 15,154,000	$ 6,998,000	$ 18,670,000	$ 18,781,000
Post-Modification Outstanding Recorded Investment	16,155,000	5,939,000	18,771,000	$ 17,722,000
Nonaccrual loans and leases	81,265,000		81,265,000		$ 79,333,000
Receivable, 90 or more days past due	9,775,000		9,775,000		10,700,000
Receivable, 30-89 days past due	29,002,000		29,002,000		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	45,000,000		$ 45,000,000
Percentage of nonaccrual loans and leases			55.00%
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	9,800,000		$ 9,800,000
Receivable, 30-89 days past due	3,300,000		3,300,000
Financing receivable, nonaccrual status, current	68,200,000		68,200,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | contract				0
Nonaccrual loans and leases	60,536,000		60,536,000
Receivable, 90 or more days past due	2,552,000		2,552,000
Receivable, 30-89 days past due	15,158,000		15,158,000
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	13,971,000	5,236,000	16,076,000	$ 5,236,000
Post-Modification Outstanding Recorded Investment	14,972,000	5,236,000	16,214,000	5,236,000
Nonaccrual loans and leases	22,501,000		22,501,000
Receivable, 90 or more days past due	0		0
Receivable, 30-89 days past due	447,000		447,000
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	107,000	31,000	692,000	11,814,000
Post-Modification Outstanding Recorded Investment	107,000	31,000	692,000	11,814,000
Nonaccrual loans and leases	5,799,000		5,799,000
Receivable, 90 or more days past due	928,000		928,000
Receivable, 30-89 days past due	2,329,000		2,329,000
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	620,000	0	620,000	0
Post-Modification Outstanding Recorded Investment	620,000	$ 0	620,000	$ 0
Nonaccrual loans and leases	32,236,000		32,236,000
Receivable, 90 or more days past due	1,624,000		1,624,000
Receivable, 30-89 days past due	$ 12,382,000		$ 12,382,000
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		2
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 447,000		$ 447,000
Other Commercial | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | contract	1		3	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 81,000		$ 140,000	$ 2,100,000

Foreclosed Assets (Details)

Foreclosed Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Total other real estate owned, net	$ 1,425	$ 4,235
Other foreclosed assets	47	1,064
Foreclosed assets, net	1,472	5,299
Commercial real estate
Total other real estate owned, net	253	2,004
Single-family residence
Total other real estate owned, net	953	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	6 Months Ended
	Jun. 30, 2019	Jun. 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	$ 1,059
Provision for losses	0
Reductions related to sales	(3,864)
Balance, end of period	$ 1,472

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 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
Accumulated Amortization, beginning of period	(67,247)	(62,377)	(46,217)	(62,377)	(39,871)
Amortization	(4,870)	(4,870)	(5,587)	(9,740)	(11,933)
CDI and CRI Balance, end of period	119,497	119,497	119,497	119,497	119,497
Accumulated Amortization, end of period	(72,117)	(67,247)	(51,804)	(72,117)	(51,804)
Net CDI and CRI, end of period	$ 47,380	$ 52,250	$ 67,693	$ 47,380	$ 67,693

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization	$ 4,870	$ 4,870	$ 5,587	$ 9,740	$ 11,933
Aggregate amortization expense 2019	14,600			14,600
Aggregate amortization expense 2020	10,800			10,800
Aggregate amortization expense 2021	7,500			7,500
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	Jun. 30, 2019	Dec. 31, 2018
Other Assets [Abstract]
Cash Surrender Value of Life Insurance	$ 196,745	$ 194,897
Finance Lease, Right-of-Use Asset	119,086	0
Interest and fees receivable income	83,308	88,754
Low Income Housing Tax Credit - LIHTC	63,151	59,507
Equity Method Investments, Other Asset Investments	58,892	59,062
Income Taxes Receivable	28,326	39,096
Prepaid Expense	19,576	18,006
Equity Investments Without Readily Determinable Fair Value	14,827	14,758
Equity Warrants	3,931	4,793
Equity Investments With Readily Determinable Fair Value	3,284	4,891
Other Assets, Miscellaneous	20,993	39,132
Other Assets	$ 612,119	$ 522,896

Other Assets (Details Textual)

Other Assets (Details Textual) - USD ($)	3 Months Ended	6 Months Ended	18 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Other Investment Not Readily Marketable [Line Items]
Equity Investments Without Readily Determinable Fair Value	$ 14,827,000	$ 14,827,000	$ 14,827,000	$ 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	$ 14,000,000	$ 14,000,000	$ 14,000,000	$ 12,500,000

Leases - Narrative (Details)

Leases - Narrative (Details)	6 Months Ended
	Jun. 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	28 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	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Lease, Cost [Abstract]
Fixed costs	$ 8,534	$ 16,836
Variable costs	46	70
Short-term lease costs	203	723
Sublease income	(1,054)	(2,180)
Net lease expense	$ 7,729	15,449
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases		16,408
ROU assets obtained in exchange for lease obligations:
Operating leases		$ 149,621

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Balance Sheet Information Related to Operating Leases (Details) $ in Thousands	Jun. 30, 2019USD ($)
Operating leases:
Operating Lease, Right-of-Use Asset	$ 119,086
Operating Lease, Liability	$ 133,887
Weighted average remaining lease term (in years)	5 years 7 months 6 days
Weighted average discount rate	2.93%

Leases - Schedule of Maturities

Leases - Schedule of Maturities of Operating Leases (Details) $ in Thousands	Jun. 30, 2019USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019	$ 16,440
2020	30,764
2021	27,348
2022	21,645
2023	18,735
Thereafter	31,185
Total operating lease liabilities	146,117
Less: Imputed interest	(12,230)
Present value of operating lease liabilities	$ 133,887

Leases - Schedule of Payments t

Leases - Schedule of Payments to be Received on Operating Leases (Details) $ in Thousands	Jun. 30, 2019USD ($)
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
2019	$ 18,620
2020	35,919
2021	28,199
2022	21,337
2023	18,604
Thereafter	50,214
Total undiscounted cash flows	$ 172,893

Borrowings and Subordinated D_3

Borrowings and Subordinated Debentures (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Borrowings	$ 1,913,059	$ 1,371,114
Rate	2.50%	2.56%
Non‑recourse debt
Debt Instrument [Line Items]
Amount	$ 59	$ 114
Rate	7.50%	7.50%
AFX borrowings
Debt Instrument [Line Items]
Amount	$ 250,000	$ 190,000
Rate	2.43%	2.56%
Federal Home Loan Bank of San Francisco | FHLB secured advances
Debt Instrument [Line Items]
Amount	$ 1,522,000	$ 1,040,000
Rate	2.52%	2.56%
Federal Home Loan Bank of San Francisco | FHLB unsecured overnight advance
Debt Instrument [Line Items]
Amount	$ 141,000	$ 141,000
Rate	2.41%	2.53%

Borrowings and Subordinated D_4

Borrowings and Subordinated Debentures (Details 1) $ in Thousands, € in Millions	6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2019EUR (€)	Dec. 31, 2018USD ($)
Subordinated Borrowing [Line Items]
Rate	2.50%	2.50%	2.56%
Net subordinated debentures	$ 456,112		$ 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	$ 541,102		$ 541,344
Rate	4.45%	4.45%	4.51%
Unamortized discount	$ (84,990)		$ (87,498)
Subordinated Debentures | Subordinated Debt Trust V Due September 2033
Subordinated Borrowing [Line Items]
Amount	$ 10,310		$ 10,310
Rate	5.51%	5.51%	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	5.46%	5.46%	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	5.36%	5.36%	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	5.33%	5.33%	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	4.10%	4.10%	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	4.01%	4.01%	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	3.96%	3.96%	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	4.36%	4.36%	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	4.53%	4.53%	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	4.53%	4.53%	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	4.53%	4.53%	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	$ 29,314		$ 29,556
Rate	1.74%	1.74%	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	4.53%	4.53%	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	4.53%	4.53%	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	4.53%	4.53%	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 ($)	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Non‑recourse debt
Debt Instrument [Line Items]
Weighted average remaining maturity period	6 months
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	250,000,000	190,000,000
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Loans pledged as collateral	2,700,000,000
Amount outstanding	0	0
Federal Reserve Bank Advances | FHLB secured advances
Debt Instrument [Line Items]
Borrowing capacity description	2,000,000,000
Federal Home Loan Bank of San Francisco
Debt Instrument [Line Items]
Loans pledged as collateral	6,000,000,000
Federal Home Loan Bank of San Francisco | FHLB secured advances
Debt Instrument [Line Items]
Borrowing capacity description	4,200,000,000
Current outstanding	1,522,000,000	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	240,000,000
Short-term Debt [Member] | AFX borrowings
Debt Instrument [Line Items]
Amount outstanding	10,000,000
Maturity Overnight [Member] | Federal Home Loan Bank of San Francisco
Debt Instrument [Line Items]
Current outstanding	$ 1,500,000,000	$ 1,000,000,000

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Loans and Leases Commitments To Extend Credit	$ 7,610,899,000	$ 7,528,248,000
Guarantor Obligations, Maximum Exposure, Undiscounted	387,012,000	364,210,000
Commitment To Contribute Capital	109,103,000	101,991,000
Remaining minimum amount committed	50,000	50,000
Unused Commitments to Extend Credit	$ 8,107,064,000	$ 7,994,499,000

Commitments and Contingencies_3

Commitments and Contingencies (Details Textual) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitment To Contribute Capital	$ 109,103,000	$ 101,991,000
Remaining minimum amount committed	$ 50,000	$ 50,000

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	$ 3,807,244	$ 4,009,431
Securities available-for-sale, at fair value	3,807,244	4,009,431
Equity Securities, FV-NI	3,284	4,891
Derivative Liability	317	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	351,360	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	1,150,474	632,850
Private label collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	112,037	101,205
Collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	93,802	0
Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	736,570	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	1,058,846	1,112,704
US Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	5,188	403,405
Asset-backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	227,121	81,385
SBA asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	51,812	67,047
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	20,034	17,553
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available‑for‑sale	3,807,244
Equity warrants	3,931	4,793
Other derivative assets	1,459	3,292
Total recurring assets	3,815,918	4,022,407
Derivative liabilities	317	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	5,188	403,405
Equity warrants	0	0
Other derivative assets	0	0
Equity Securities, FV-NI	3,284	4,891
Total recurring assets	8,472	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	3,761,660	3,558,793
Equity warrants	0	0
Other derivative assets	1,459	3,292
Equity Securities, FV-NI	0	0
Total recurring assets	3,763,119	3,562,085
Derivative liabilities	317	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	40,396	47,233
Equity warrants	3,931	4,793
Other derivative assets	0	0
Equity Securities, FV-NI	0	0
Total recurring assets	44,327	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	351,360	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	351,360	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	1,150,474	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	1,150,474	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	112,037	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	105,138	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	6,899	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	93,802
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	93,802
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	736,570	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	736,570	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	1,058,846	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	1,058,846	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	5,188	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	5,188	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	227,121	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	193,624	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	33,497	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	51,812	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	51,812	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	20,034	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	20,034	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	6 Months Ended
	Jun. 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	0.036
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	0.036
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	1
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	0.0100
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	0.112
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	0.112
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	0.004
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	0.004
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	0.820
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	0.8200
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	0.019
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	0.019
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	0.015
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	0.015
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	1.458
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	1.4580
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	0.578
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	0.578
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	0.0930
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	0.064
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	0.064
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	6 Months Ended
	Jun. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Warrants, Measurement Input, Remaining Life	3 years 4 months 9 days
Measurement Input, Price Volatility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Volatility	0.167
Measurement Input, Risk Free Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Volatility	0.017

Fair Value Measurements (Deta_4

Fair Value Measurements (Details 3)	6 Months Ended
	Jun. 30, 2019USD ($)
Level 3
Level 3 CMO [Roll Forward]
Equity warrants, Balance, beginning of period	$ 4,793,000
Total included in earnings, Equity Warrants	3,493,000
Total included in other comprehensive income	0
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants	161,000
Sales, Equity Warrants	(4,453,000)
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	3,931,000
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	3,931,000
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	224,000
Total included in other comprehensive income	(64,000)
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	(549,000)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	6,899,000
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	(56,000)
Total included in other comprehensive income	559,000
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	(6,951,000)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	33,497,000
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	$ 63,000

Fair Value Measurements (Deta_5

Fair Value Measurements (Details 4) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	$ 23,517	$ 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	0	2,936
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets	23,517	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	23,517	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	0	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	$ 23,517	22,632
Other real estate and foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets		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
Other real estate and foreclosed assets | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring assets		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		$ 0

Fair Value Measurements (Deta_6

Fair Value Measurements (Details 5) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses	$ 1,842	$ 12,076	$ 3,038	$ 16,059
Non Purchased Credit Impaired Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses	1,842	12,076	3,038	15,994
Other real estate and foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses	$ 0	$ 0	$ 0	$ 65

Fair Value Measurements (Deta_7

Fair Value Measurements (Details 6) - Measurement Input, Discount Rate - Discounted Cash Flow - Non Purchased Credit Impaired Loans and Leases - Fair Value, Measurements, Nonrecurring - Level 3	6 Months Ended
	Jun. 30, 2019
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0375
Minimum | Discount Rates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0375
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0800
Maximum | Discount Rates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0800
Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0648
Weighted Average | Discount Rates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0648

Fair Value Measurements (Deta_8

Fair Value Measurements (Details 7) - Fair Value, Measurements, Nonrecurring $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 23,517	$ 25,568
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	23,517	22,632
Non Purchased Credit Impaired Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	23,517	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	23,517	$ 22,632
Discount Rates | Discounted Cash Flow | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	17,073
No Discounts | Third party appraisals | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 6,444
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	0.0800
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	0.0648
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	0.0800
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	0.0648

Fair Value Measurements (Deta_9

Fair Value Measurements (Details 8) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	$ 185,075	$ 175,830
Interest-earning deposits in financial institutions	422,663	209,937
Securities available-for-sale, Carrying Amount	3,807,244	4,009,431
Investment in FHLB stock, Carrying Amount	43,146	32,103
Investment in FHLB stock, Fair Value	43,146	32,103
Loans and leases, net	18,337,815	17,825,241
Loans and leases held for investment, net	17,841,445
Warrants and Rights Outstanding		4,793
Other derivative assets, Carrying Amount	1,459	3,292
Equity Securities, FV-NI	3,284	4,891
Demand, interest checking, money market, and savings deposits	15,617,488	16,346,671
Interest-bearing Domestic Deposit, Brokered	436,833	518,192
Time deposits	2,751,435	2,005,638
Time deposits	2,749,828	2,017,137
Borrowings	1,913,059	1,371,114
Borrowings	1,913,059	1,371,114
Subordinated debentures	456,112	453,846
Subordinated debentures	439,635	435,251
Derivative Liability	317	142
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	185,075	175,830
Interest-earning deposits in financial institutions	422,663	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	1,903,000	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	43,146	32,103
Demand, interest checking, money market, and savings deposits	15,617,488	16,346,671
Interest-bearing Domestic Deposit, Brokered	436,833	518,192
Time deposits	2,749,828	2,017,137
Borrowings	10,059	114
Subordinated debentures	439,635	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	17,841,445
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	3,931	4,793
Other derivative assets, Fair Value	1,459	3,292
Derivative liabilities	317	142
Fair Value, Measurements, Recurring | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available-for-sale, Carrying Amount	5,188	403,405
Equity warrants	0	0
Other derivative assets, Fair Value	0	0
Equity Securities, FV-NI	3,284	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	3,761,660	3,558,793
Equity warrants	0	0
Other derivative assets, Fair Value	1,459	3,292
Equity Securities, FV-NI	0	0
Derivative liabilities	317	142
Fair Value, Measurements, Recurring | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available-for-sale, Carrying Amount	40,396	47,233
Equity warrants	3,931	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	$ 0	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)	6 Months Ended
	Jun. 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	$ (63,000)

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2019		Mar. 31, 2019		Jun. 30, 2018		Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net earnings from continuing operations	$ 128,125		$ 112,604		$ 115,735		$ 240,729	$ 234,011
Less: Earnings allocated to unvested restricted stock	(1,190)	[1]	(1,163)	[1]	(1,348)	[1]	(2,343)	(2,469)
Net earnings allocated to common shares	$ 126,935		$ 111,441		$ 114,387		$ 238,386	$ 231,542
Weighted-average basic shares and unvested restricted stock outstanding (shares)	120,042		122,227		126,082		121,128	126,780
Weighted-average unvested restricted stock outstanding (shares)	(1,462)		(1,352)		(1,466)		(1,407)	(1,439)
Weighted-average basic shares outstanding (shares)	118,580		120,875		124,616		119,721	125,341
Basic net income per share (usd per share)	$ 1.07		$ 0.92		$ 0.92		$ 1.99	$ 1.85
Net earnings from continuing operations allocated to common shares	$ 126,935		$ 111,441		$ 114,387		$ 238,386	$ 231,542
Diluted net income per share (usd per share)	$ 1.07		$ 0.92		$ 0.92		$ 1.99	$ 1.85
[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			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total interest income	$ 314,533	$ 304,559	$ 288,514	$ 619,092	$ 566,289
Service charges on deposit accounts	3,771	3,730	4,265	7,501	8,439
Other commissions and fees	11,590	11,008	11,767	22,598	22,032
Leased equipment income	9,182	9,282	9,790	18,464	19,377
Gain on sale of loans and leases	326	0	106	326	4,675
Gain on sale of securities	22,192	2,161	253	24,353	6,564
Other income	3,832	4,883	13,457	8,715	17,110
Total noninterest income	50,893	$ 31,064	39,638	81,957	78,197
Revenues	365,426		328,152	701,049	644,486
Service charges on deposit accounts	9,383		9,802	18,022	19,088
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	3,771		4,265	7,501	8,439
Other commissions and fees
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	5,158		5,101	9,696	9,752
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	454		436	825	897
Noninterest Income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	$ 9,383		$ 9,802	$ 18,022	$ 19,088

Revenue From Contracts With C_4

Revenue From Contracts With Customers (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue From Contracts With Customers [Abstract]
Products and services transferred at a point in time	$ 4,987	$ 4,930	$ 9,533	$ 9,591
Products and services transferred over time	4,396	4,872	8,489	9,497
Total revenue from contracts with customers	$ 9,383	$ 9,802	$ 18,022	$ 19,088

Revenue From Contracts With C_5

Revenue From Contracts With Customers (Details 2) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 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	$ 556	$ 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	$ 65,000

Stock-Based Compensation (Detai

Stock-Based Compensation (Details Textual) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 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	$ 6.2	$ 5.8	$ 6.9	$ 12	$ 14.1
Restricted Stock Awards And Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share based compensation expense	$ 66.5			$ 66.5
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)	2,438,627			2,438,627
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)	1,623,494			1,623,494

Subsequent Events (Details Text

Subsequent Events (Details Textuals) - $ / shares	Aug. 01, 2019	Jun. 30, 2019	Jun. 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 - a06301910

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]
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