Pacwest Bancorp (PACW) 10-Q 7 Nov 16 2016 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 26, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	PACWEST BANCORP
Entity Central Index Key	1,102,112
Document Period End Date	Sep. 30, 2016
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		120,279,633

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Assets [Abstract]
Cash and due from banks	$ 286,371	$ 161,020
Interest-earning deposits in financial institutions	253,994	235,466
Total cash and cash equivalents	540,365	396,486
Securities available-for-sale, at fair value	3,341,335	3,559,437
Federal Home Loan Bank stock, at cost	19,386	19,710
Total investment securities	3,360,721	3,579,147
Gross loans and leases	14,806,427	14,528,165
Deferred fees, net	(63,581)	(49,911)
Allowance for loan and lease losses	147,976	115,111
Total loans and leases, net	14,594,870	14,363,143
Equipment leased to others under operating leases	198,931	197,452
Premises and equipment, net	38,977	39,197
Foreclosed assets, net	15,113	22,120
Goodwill	2,173,949	2,176,291
Core deposit and customer relationship intangibles, net	39,542	53,220
Deferred tax asset, net	27,073	126,389
Other assets	325,750	335,045
Total assets	21,315,291	21,288,490
Liabilities and Equity [Abstract]
Noninterest-bearing deposits	6,521,946	6,171,455
Interest-bearing deposits	9,123,722	9,494,727
Total deposits	15,645,668	15,666,182
Borrowings	541,011	621,914
Subordinated debentures	441,112	436,000
Accrued interest payable and other liabilities	144,905	166,703
Total liabilities	16,772,696	16,890,799
Commitments and contingencies (Note 8)
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 September 30, 2016 and December 31, 2015; 123,320,121 and 122,791,729 shares issued, respectively, including 1,407,486 and 1,211,951 shares of unvested restricted stock, respectively)	1,233	1,228
Additional paid-in capital	4,244,521	4,405,775
Retained earnings	280,426	13,907
Treasury stock, at cost (1,502,597 and 1,378,002 shares at September 30, 2016 and December 31, 2015)	(55,658)	(51,047)
Accumulated other comprehensive income, net	72,073	27,828
Total stockholders' equity	4,542,595	4,397,691
Total liabilities and stockholders' equity	$ 21,315,291	$ 21,288,490

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2016	Dec. 31, 2015
Preferred stock par value (usd per share)	$ 0.01	$ 0.01
Preferred stock outstanding (shares)	5,000,000	5,000,000
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)	123,320,121	122,791,729
Unvested restricted shares (shares)	1,393,373	1,211,951
Treasury Stock (shares)	1,502,597	1,378,002

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Interest income:
Loans and leases	$ 225,370	$ 224,326	$ 193,539	$ 686,071	$ 599,417
Investment securities	22,187	22,420	13,955	67,154	40,720
Deposits in financial institutions	298	308	178	914	304
Total interest income	247,855	247,054	207,672	754,139	640,441
Interest expense:
Deposits	7,247	7,823	10,400	24,143	32,112
Borrowings	695	352	72	1,628	395
Subordinated debentures	5,278	5,122	4,680	15,382	13,787
Total interest expense	13,220	13,297	15,152	41,153	46,294
Net interest income	234,635	233,757	192,520	712,986	594,147
Provision for credit losses	8,471	13,903	8,746	42,514	31,709
Net interest income after provision for credit losses	226,164	219,854	183,774	670,472	562,438
Non-interest income:
Service charges on deposit accounts	3,488	3,633	2,601	10,977	7,787
Other commissions and fees	12,528	11,073	6,376	35,090	18,895
Leased equipment income	8,538	8,523	5,475	25,305	16,232
Gain on sale of loans and leases	157	388	27	790	190
Gain on sale of securities	382	478	655	8,970	3,744
FDIC loss sharing expense, net	0	(6,502)	(4,449)	(8,917)	(13,955)
Other income	1,827	4,528	5,073	11,365	23,359
Total noninterest income	26,920	22,121	15,758	83,580	56,252
Non-interest expense:
Compensation	62,661	62,174	48,152	185,900	144,922
Occupancy	12,010	12,193	10,762	36,835	31,950
Data processing	6,234	5,644	4,322	17,782	13,032
Other professional services	4,625	3,401	3,396	11,598	9,949
Insurance and assessments	4,324	4,951	3,805	14,240	11,546
Intangible asset amortization	4,224	4,371	1,497	13,341	4,500
Leased equipment depreciation	5,298	5,286	3,162	15,608	9,368
Foreclosed assets (income) expense, net	(248)	(3)	4,521	(812)	2,517
Acquisition, integration and reorganization costs	0	0	747	200	3,647
Other expense	11,582	12,064	9,775	36,787	28,344
Total noninterest expense	110,710	110,081	90,139	331,479	259,775
Earnings before income taxes	142,374	131,894	109,393	422,573	358,915
Income tax expense	(48,479)	(49,726)	(39,777)	(156,054)	(131,137)
Net earnings	$ 93,895	$ 82,168	$ 69,616	$ 266,519	$ 227,778
Earnings Per Share, Basic [Abstract]
Net earnings (usd per share)	$ 0.77	$ 0.68	$ 0.68	$ 2.19	$ 2.21
Earnings Per Share, Diluted [Abstract]
Net earnings (usd per share)	0.77	0.68	0.68	2.19	2.21
Dividends [Abstract]
Dividends declared per share (usd per share)	$ 0.50	$ 0.50	$ 0.5	$ 1.50	$ 1.5

Condensed Consolidated Stateme5

Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net earnings		$ 93,895	$ 82,168	$ 69,616	$ 266,519	$ 227,778
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax		(15,954)	56,514	14,466	83,653	616
Income tax (expense) benefit related to unrealized holding gains (losses) arising during the period		6,509	(22,965)	(5,873)	(34,111)	(364)
Unrealized net holding gains (losses) on securities available-for-sale, net of tax		(9,445)	33,549	8,593	49,542	252
Reclassification adjustment for net (gains) losses included in net earnings	[1]	(382)	(478)	(655)	(8,970)	(3,744)
Income tax expense (benefit) related to reclassification adjustment		156	194	266	3,673	1,571
Reclassification adjustment for net (gains) losses included in net earnings, net of tax		(226)	(284)	(389)	(5,297)	(2,173)
Other comprehensive income (loss), net of tax		(9,671)	33,265	8,204	44,245	(1,921)
Comprehensive income		$ 84,224	$ 115,433	$ 77,820	$ 310,764	$ 225,857
[1]	Entire amounts are recognized in "Gain on sale of securities" on the Condensed Consolidated Statements of Earnings.

Condensed Consolidated Stateme6

Condensed Consolidated Statement of Shareholders' Equity - 9 months ended Sep. 30, 2016 - USD ($) $ in Thousands	Total	Shares Of Common Stock [Member]	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance, December 31, 2015 at Dec. 31, 2015	$ 4,397,691		$ 1,228	$ 4,405,775	$ 13,907	$ (51,047)	$ 27,828
Shares outstanding, beginning balance (shares) at Dec. 31, 2015		121,413,727
Stockholders' Equity Disclosure [Rollforward]
Net earnings	266,519				266,519
Other comprehensive loss-net unrealized loss on securities available-for-sale, net of tax	44,245						44,245
Restricted stock awarded and earned compensation, net of shares forfeited (shares)		528,392
Restricted stock awarded and earned stock compensation, net of shares forfeited	17,275		5	17,270
Restricted stock surrendered (shares)		(124,595)
Restricted stock surrendered	(4,611)					(4,611)
tax effect from vesting of restricted stock	4,226			4,226
Cash dividends paid	(182,750)			(182,750)
Balance, September 30, 2016 at Sep. 30, 2016	$ 4,542,595		$ 1,233	$ 4,244,521	$ 280,426	$ (55,658)	$ 72,073
Shares outstanding, ending balance (shares) at Sep. 30, 2016		121,817,524

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net earnings	$ 266,519	$ 227,778
Depreciation and amortization	66,114	33,239
Provision for credit losses	42,514	31,709
(Gain) loss on sale of foreclosed assets	(837)	42
Provision for losses on foreclosed assets	0	5,163
Gain on sale of loans and leases	(790)	(190)
Gain on sale of premises and equipment	(23)	(54)
Gain on sale of securities	(8,970)	(3,744)
Unrealized gain on derivatives and foreign currencies, net	(374)	(909)
Earned stock compensation	17,275	11,836
Loss on sale of leasing unit	720	0
Tax effect included in stockholders' equity of restricted stock vesting	(4,226)	(596)
Decrease in accrued and deferred income taxes, net	74,946	108,553
Decrease in other assets	2,070	15,786
Decrease in accrued interest payable and other liabilities	(23,600)	(25,336)
Net cash provided by operating activities	431,338	403,277
Cash flows from investing activities:
Net increase in loans and leases	(514,224)	(612,008)
Proceeds from sales of loans and leases	106,109	10,557
Proceeds from maturities and paydowns	184,644	93,389
Proceeds from sales	392,841	212,169
Purchases	(303,742)	(557,769)
Net redemptions of Federal Home Loan Bank stock	324	23,359
Proceeds from sales of foreclosed assets	7,973	18,772
Purchases of premises and equipment, net	(6,185)	(5,872)
Proceeds from sales of premises and equipment	24	108
Proceeds from sale of leasing unit	138,955	0
Proceeds from BOLI death benefit	1,853	0
Net increase of equipment leased to others under operating leases	(15,802)	(26,174)
Net cash used in investing activities	(7,230)	(843,469)
Cash flows from financing activities:
Noninterest-bearing	352,784	573,101
Interest-bearing	(371,005)	(216,717)
Net (decrease) increase in borrowings	(78,873)	169,095
Common stock repurchased	(4,611)	(8,391)
Tax effect included in stockholders' equity of restricted stock vesting	4,226	596
Cash dividends paid	(182,750)	(154,424)
Net cash (used in) provided by financing activities	(280,229)	363,260
Net increase (decrease) in cash and cash equivalents	143,879	(76,932)
Cash and cash equivalents, beginning of period	396,486	313,226
Cash and cash equivalents, end of period	540,365	236,294
Supplemental disclosures of cash flow information:
Cash paid for interest	41,392	51,218
Cash paid for income taxes	82,721	13,760
Loans transferred to foreclosed assets	129	13,472
Partnership interest transferred to equipment leased to others under operating leases	$ 0	$ 20,833

Organization

Organization	9 Months Ended
	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization PacWest Bancorp is a bank holding company registered under the Bank Holding Company Act of 1956, as amended. Our principal business is to serve as the holding company for our wholly-owned banking 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," “our,” 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. As of September 30, 2016 , the Company had total assets of $21.3 billion , gross loans and leases of $14.8 billion , total deposits of $15.6 billion and total stockholders' equity of $4.5 billion . 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 79 full-service branches located throughout the State of California, one branch located in Durham, North Carolina, and several loan production offices located in cities across the country. The Bank provides commercial banking services, including real estate, construction, and commercial loans and leases, and comprehensive deposit and treasury management services to small and middle-market businesses. Pacific Western offers additional products and services through its CapitalSource and Square 1 Bank divisions. CapitalSource provides cash flow, asset-based, equipment and real estate loans and treasury management services to established middle-market businesses on a national basis. Square 1 Bank 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 Square 1 Asset Management, Inc., a wholly-owned subsidiary of the Bank and a SEC-registered investment adviser. When we refer to "CapitalSource Inc." we are referring to the company acquired on April 7, 2014 and when we refer to the "CapitalSource Division" we are referring to a division of Pacific Western. 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 compensation, occupancy, general operating expenses, and the interest paid by the Bank on deposits and borrowings. We have completed 28 acquisitions from May 1, 2000 through September 30, 2016 , including the acquisition of Square 1 Financial, Inc. ("Square 1") on October 6, 2015 . 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. See Note 2. Acquisitions , for more information about the Square 1 acquisition. On March 31, 2016, we sold our Pacific Western Equipment Finance ("PWEF") leasing unit in Midvale, Utah, including approximately $139 million of outstanding lease balances. Significant Accounting Policies Except as discussed below, 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, 2015 as filed with the Securities and Exchange Commission ("Form 10-K"). Basis of Presentation Our interim consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“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 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. Material estimates subject to change in the near term include, among other items, the allowance for credit losses, the carrying value and useful lives 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. As described in Note 2. Acquisitions, the acquired assets and liabilities of Square 1 were measured at their estimated fair values. We made significant estimates and exercised significant judgment in estimating fair values and accounting for such acquired assets and assumed liabilities. Reclassifications Certain prior period amounts have been reclassified to conform to the current period's presentation format. The operating segments previously reported have been aggregated into one segment to conform to the current period's presentation format.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2016
Business Combinations [Abstract]
Acquisitions	Acquisitions Square 1 Financial, Inc. Acquisition We acquired Square 1 on October 6, 2015 . As part of the acquisition, Square 1 Bank, a wholly-owned subsidiary of Square 1, merged with and into Pacific Western. At closing, we formed the Square 1 Ban k Division of Pacific Western to focus on providing a comprehensive suite of financial services to entrepreneurial businesses and their venture capital and private equity investors nationwide. When we refer to "Square 1", we are referring to the company acquired on October 6, 2015, and when we refer to the "Square 1 Bank Division", we are referring to a division of Pacif ic Western. We completed this acquisition to increase our core deposits, expand our nationwide lending platform, and increase our presence in the technology and life-sciences credit markets. The Square 1 acquisition has been accounted for under the acquisition method of accounting. We acquired $4.6 billion of assets and assumed $3.8 billion of liabilities upon closing of the acquisition. The assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the acquisition date. We made significant estimates and exercised significant judgment in estimating fair values and accounting for such acquired assets and liabilities. The application of the acquisition method of accounting resulted in goodwill of $446.1 million . All of the recognized goodwill is expected to be non-deductible for tax purposes.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure	Goodwill and Other Intangible Assets Goodwill arises from the acquisition method of accounting for business combinations and represents the excess of the purchase price over the fair value of the net assets and other identifiable intangible assets acquired. Our intangible assets with definite lives are core deposit intangibles ("CDI") and customer relationship intangibles ("CRI"). Goodwill and other intangible assets deemed to have indefinite lives generated from business combinations are not subject to amortization and are instead tested for impairment no less than annually. Impairment exists when the carrying value of goodwill exceeds its implied fair value. An impairment loss would be recognized in an amount equal to that excess and would be included in “Noninterest expense” in the condensed consolidated statements of earnings. 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 loan and lease customers acquired. The weighted average amortization period remaining for all of our CDI and CRI as of September 30, 2016 is 5.6 years. The aggregate CDI and CRI amortization expense is expected to be $16.5 million for 2016 . The estimated aggregate amortization expense related to these intangible assets for each of the next five years is $11.5 million for 2017 , $8.8 million for 2018 , $6.7 million for 2019 , $4.7 million for 2020 , and $3.0 million for 2021 . The following table presents the changes in the carrying amount of goodwill for the period indicated: Goodwill (In thousands) Balance, December 31, 2015 $ 2,176,291 Adjustment to acquired Square 1 tax assets (1,842 ) Reduction due to sale of PWEF leasing unit (500 ) Balance, September 30, 2016 $ 2,173,949 Goodwill adjustments include the finalization of the acquired Square 1 net tax assets and the reduction of goodwill in connection with the sale of the PWEF leasing unit. The finalization of the day 1 fair value of the acquired tax assets is due to completion of the 2015 tax returns. Through the sale of the PWEF leasing unit on March 31, 2016, $0.5 million of goodwill was allocated to this business group; such goodwill reduction is included in the $0.7 million loss on sale of the PWEF leasing unit and included in "Other income" in the condensed consolidated statements of earnings. The following table presents the changes in CDI and CRI and the related accumulated amortization for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2016 2016 2015 2016 2015 (In thousands) Gross Amount of CDI and CRI: Balance, beginning of period $ 76,513 $ 93,824 $ 53,090 $ 95,524 $ 53,090 Fully amortized portion (2,811 ) (17,311 ) — (20,122 ) — Reduction due to sale of PWEF leasing unit — — — (1,700 ) — Balance, end of period 73,702 76,513 53,090 73,702 53,090 Accumulated Amortization: Balance, beginning of period (32,747 ) (45,687 ) (38,889 ) (42,304 ) (35,886 ) Amortization (4,224 ) (4,371 ) (1,497 ) (13,341 ) (4,500 ) Fully amortized portion 2,811 17,311 — 20,122 — Reduction due to sale of PWEF leasing unit — — — 1,363 — Balance, end of period (34,160 ) (32,747 ) (40,386 ) (34,160 ) (40,386 ) Net CDI and CRI, end of period $ 39,542 $ 43,766 $ 12,704 $ 39,542 $ 12,704

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2016
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 carrying values of securities available-for-sale as of the dates indicated: September 30, 2016 December 31, 2015 Gross Gross Gross Gross Amortized Unrealized Unrealized Fair Amortized Unrealized Unrealized Fair Security Type: Cost Gains Losses Value Cost Gains Losses Value (In thousands) Residential mortgage-backed securities ("MBS") and collateralized mortgage obligations ("CMOs"): Agency MBS $ 518,996 $ 10,639 $ (694 ) $ 528,941 $ 660,069 $ 11,517 $ (3,746 ) $ 667,840 Agency CMOs 154,216 3,196 (181 ) 157,231 193,148 2,633 (1,026 ) 194,755 Private label CMOs 133,917 5,377 (669 ) 138,625 140,065 5,837 (1,106 ) 144,796 Municipal securities 1,437,952 84,571 (29 ) 1,522,494 1,508,968 39,435 (1,072 ) 1,547,331 Agency commercial MBS 517,163 15,299 (1,189 ) 531,273 392,729 1,509 (2,797 ) 391,441 Corporate debt securities 47,155 1,856 — 49,011 49,047 327 (950 ) 48,424 Collateralized loan obligations 155,373 1,511 (237 ) 156,647 133,192 128 (1,131 ) 132,189 SBA securities 185,639 1,909 (248 ) 187,300 211,946 41 (830 ) 211,157 US Treasury securities — — — — 70,196 — (816 ) 69,380 Agency debt securities — — — — 36,302 611 — 36,913 Asset-backed and other securities 69,189 722 (98 ) 69,813 116,723 119 (1,631 ) 115,211 Total $ 3,219,600 $ 125,080 $ (3,345 ) $ 3,341,335 $ 3,512,385 $ 62,157 $ (15,105 ) $ 3,559,437 As of September 30, 2016 , securities available-for-sale with a carrying value of $342.2 million were pledged as collateral for borrowings, public deposits and other purposes as required by various statutes and agreements. During the three months ended September 30, 2016 , we sold $39.1 million of securities available-for-sale for a gross realized gain of $1.0 million and a gross realized loss of $0.6 million . During the three months ended September 30, 2015 , we sold $52.0 million of securities available-for-sale for a gross realized gain of $0.7 million . During the nine months ended September 30, 2016 , we sold $383.9 million of securities available-for-sale for a gross realized gain of $10.5 million and a gross realized loss of $1.6 million . During the nine months ended September 30, 2015 , we sold $208.4 million of securities available-for-sale for a gross realized gain of $4.4 million and a gross realized loss of $0.7 million . Unrealized Losses on Securities Available-for-Sale The following tables present the gross unrealized losses and fair values of securities available-for-sale that were in unrealized loss positions, for which other-than-temporary impairments have not been recognized in earnings, as of the dates indicated: September 30, 2016 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) Residential MBS and CMOs: Agency MBS $ 33,817 $ (100 ) $ 130,786 $ (594 ) $ 164,603 $ (694 ) Agency CMOs 18,893 (95 ) 26,476 (86 ) 45,369 (181 ) Private label CMOs 14,552 (98 ) 29,058 (571 ) 43,610 (669 ) Municipal securities 5,338 (29 ) — — 5,338 (29 ) Agency commercial MBS 77,706 (1,189 ) — — 77,706 (1,189 ) Collateralized loan obligations 2,506 (5 ) 39,197 (232 ) 41,703 (237 ) SBA securities 2,956 (9 ) 39,842 (239 ) 42,798 (248 ) Asset-backed and other securities 5 (2 ) 14,974 (96 ) 14,979 (98 ) Total $ 155,773 $ (1,527 ) $ 280,333 $ (1,818 ) $ 436,106 $ (3,345 ) December 31, 2015 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) Residential MBS and CMOs: Agency MBS $ 352,042 $ (3,480 ) $ 9,342 $ (266 ) $ 361,384 $ (3,746 ) Agency CMOs 117,786 (1,026 ) — — 117,786 (1,026 ) Private label CMOs 93,533 (1,000 ) 1,638 (106 ) 95,171 (1,106 ) Municipal securities 126,892 (1,061 ) 531 (11 ) 127,423 (1,072 ) Agency commercial MBS 236,098 (2,156 ) 14,230 (641 ) 250,328 (2,797 ) US Treasury securities 69,380 (816 ) — — 69,380 (816 ) Corporate debt securities 29,379 (950 ) — — 29,379 (950 ) Collateralized loan obligations 100,993 (1,131 ) — — 100,993 (1,131 ) SBA securities 179,942 (830 ) — — 179,942 (830 ) Asset-backed and other securities 71,619 (1,182 ) 16,091 (449 ) 87,710 (1,631 ) Total $ 1,377,664 $ (13,632 ) $ 41,832 $ (1,473 ) $ 1,419,496 $ (15,105 ) We reviewed the securities that were in a loss position at September 30, 2016 , and concluded their unrealized losses were not a result of downgraded credit ratings or other indicators of deterioration of the underlying issuers' ability to repay. Such unrealized losses were a result of the level of market interest rates and pricing changes caused by shifting supply and demand dynamics relative to the types of securities. Accordingly, we determined the securities were temporarily impaired and we did not recognize such impairment in the condensed consolidated statements of earnings. Although we occasionally sell securities for portfolio management purposes, we do not foresee having to sell any temporarily impaired securities strictly for liquidity needs and believe that it is more likely than not we would not be required to sell any temporarily impaired securities before recovery of their amortized cost. Contractual Maturities of Securities Available-for-Sale The following table presents the contractual maturities of our securities available-for-sale portfolio based on amortized cost and carrying value as of the date indicated: September 30, 2016 Amortized Fair Maturity: Cost Value (In thousands) Due in one year or less $ 8,352 $ 8,562 Due after one year through five years 252,427 259,096 Due after five years through ten years 714,467 738,034 Due after ten years 2,244,354 2,335,643 Total securities available-for-sale $ 3,219,600 $ 3,341,335 Mortgage-backed securities have contractual terms to maturity but require periodic payments to reduce principal. In addition, expected maturities may differ from contractual maturities because obligors and/or issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Interest Income on Investment Securities The following table presents the composition of our interest income on investment securities for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2016 2016 2015 2016 2015 (In thousands) Taxable interest $ 11,446 $ 11,406 $ 7,323 $ 34,248 $ 22,373 Non-taxable interest 10,333 10,503 6,058 31,562 14,760 Dividend income 408 511 574 1,344 3,587 Total interest income on investment securities $ 22,187 $ 22,420 $ 13,955 $ 67,154 $ 40,720

Loans and Leases

Loans and Leases	9 Months Ended
	Sep. 30, 2016
Receivables [Abstract]
Loans and Leases	Loans and Leases The Company’s loan and lease portfolio includes originated and purchased loans and leases. Originated and purchased loans and leases for which there was no evidence of credit deterioration at their acquisition date and for which it was probable that all contractually required payments would be collected, are referred to collectively as non-purchased credit impaired loans, or "Non-PCI loans." Purchased loans for which there was, at the acquisition date, evidence of credit deterioration since their origination and for which it was deemed probable that we would be unable to collect all contractually required payments, are referred to as purchased credit impaired loans, or "PCI loans". Non-PCI loans are carried at the principal amount outstanding, net of deferred fees and costs, and in the case of acquired loans, net of purchase discounts and premiums. Deferred fees and costs and purchase discounts and premiums are recognized as an adjustment to interest income over the contractual life of the loans using the effective interest method or taken into income on an accelerated basis when the related loans are paid off or sold. PCI loans are accounted for in accordance with ASC Subtopic 310‑30, “ Loans and Debt Securities Acquired with Deteriorated Credit Quality" . For PCI loans, at the time of acquisition we (i) calculate the contractual amount and timing of undiscounted principal and interest payments (the "undiscounted contractual cash flows") and (ii) estimate the amount and timing of undiscounted expected principal and interest payments (the "undiscounted expected cash flows"). The difference between the undiscounted contractual cash flows and the undiscounted expected cash flows is the nonaccretable difference. The difference between the undiscounted cash flows expected to be collected and the estimated fair value of the acquired loans is the accretable yield. The nonaccretable difference represents an estimate of the loss exposure of principal and interest related to the PCI loan portfolio; such amount is subject to change over time based on the performance of such loans. The carrying value of PCI loans is reduced by payments received, both principal and interest, and increased by the portion of the accretable yield recognized as interest income. The following table summarizes the composition of our loan and lease portfolio as of the dates indicated: September 30, 2016 December 31, 2015 Non-PCI Non-PCI Loans PCI Loans PCI and Leases Loans Total and Leases Loans Total (In thousands) Real estate mortgage $ 5,481,922 $ 104,896 $ 5,586,818 $ 5,706,903 $ 168,725 $ 5,875,628 Real estate construction and land 843,097 2,423 845,520 534,307 2,656 536,963 Commercial 8,104,711 12,649 8,117,360 7,977,067 17,415 7,994,482 Consumer 256,476 253 256,729 120,793 299 121,092 Total gross loans and leases 14,686,206 120,221 14,806,427 14,339,070 189,095 14,528,165 Deferred fees, net (63,559 ) (22 ) (63,581 ) (49,861 ) (50 ) (49,911 ) Total loans and leases, net of deferred fees 14,622,647 120,199 14,742,846 14,289,209 189,045 14,478,254 Allowance for loan and lease losses (136,747 ) (11,229 ) (147,976 ) (105,534 ) (9,577 ) (115,111 ) Total net loans and leases $ 14,485,900 $ 108,970 $ 14,594,870 $ 14,183,675 $ 179,468 $ 14,363,143 Non‑Purchased Credit Impaired (Non‑PCI) Loans and Leases The following tables present an aging analysis of our Non‑PCI loans and leases by portfolio segment and class as of the dates indicated: September 30, 2016 30 - 89 90 or More Days Days Total Past Due Past Due Past Due Current Total (In thousands) Real estate mortgage: Commercial $ 10,489 $ 5,772 $ 16,261 $ 4,262,571 $ 4,278,832 Residential 266 2,520 2,786 1,183,323 1,186,109 Total real estate mortgage 10,755 8,292 19,047 5,445,894 5,464,941 Real estate construction and land: Commercial 1,245 — 1,245 507,166 508,411 Residential — — — 323,104 323,104 Total real estate construction and land 1,245 — 1,245 830,270 831,515 Commercial: Cash flow 66 2,128 2,194 3,063,297 3,065,491 Asset-based 6,644 15 6,659 2,565,142 2,571,801 Venture capital — 1,095 1,095 1,760,517 1,761,612 Equipment finance 3,304 350 3,654 667,129 670,783 Total commercial 10,014 3,588 13,602 8,056,085 8,069,687 Consumer — 4 4 256,500 256,504 Total Non-PCI loans and leases $ 22,014 $ 11,884 $ 33,898 $ 14,588,749 $ 14,622,647 December 31, 2015 30 - 89 90 or More Days Days Total Past Due Past Due Past Due Current Total (In thousands) Real estate mortgage: Commercial $ 3,947 $ 13,075 $ 17,022 $ 4,534,936 $ 4,551,958 Residential 3,391 905 4,296 1,131,809 1,136,105 Total real estate mortgage 7,338 13,980 21,318 5,666,745 5,688,063 Real estate construction and land: Commercial — — — 343,360 343,360 Residential — — — 184,360 184,360 Total real estate construction and land — — — 527,720 527,720 Commercial: Cash flow 2,048 1,427 3,475 3,058,793 3,062,268 Asset-based 1 — 1 2,547,532 2,547,533 Venture capital 250 700 950 1,451,477 1,452,427 Equipment finance 359 94 453 889,896 890,349 Total commercial 2,658 2,221 4,879 7,947,698 7,952,577 Consumer 626 1,307 1,933 118,916 120,849 Total Non-PCI loans and leases $ 10,622 $ 17,508 $ 28,130 $ 14,261,079 $ 14,289,209 It is the Company's policy to discontinue accruing interest 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 or 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. 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 Non‑PCI loans and leases by portfolio segment and class as of the dates indicated: September 30, 2016 December 31, 2015 Nonaccrual Performing Total Nonaccrual Performing Total (In thousands) Real estate mortgage: Commercial $ 74,606 $ 4,204,226 $ 4,278,832 $ 52,363 $ 4,499,595 $ 4,551,958 Residential 5,089 1,181,020 1,186,109 4,914 1,131,191 1,136,105 Total real estate mortgage 79,695 5,385,246 5,464,941 57,277 5,630,786 5,688,063 Real estate construction and land: Commercial 1,245 507,166 508,411 — 343,360 343,360 Residential 366 322,738 323,104 372 183,988 184,360 Total real estate construction and land 1,611 829,904 831,515 372 527,348 527,720 Commercial: Cash flow 27,831 3,037,660 3,065,491 15,800 3,046,468 3,062,268 Asset-based 4,044 2,567,757 2,571,801 2,505 2,545,028 2,547,533 Venture capital 10,782 1,750,830 1,761,612 124 1,452,303 1,452,427 Equipment finance 46,916 623,867 670,783 51,410 838,939 890,349 Total commercial 89,573 7,980,114 8,069,687 69,839 7,882,738 7,952,577 Consumer 206 256,298 256,504 1,531 119,318 120,849 Total Non-PCI loans and leases $ 171,085 $ 14,451,562 $ 14,622,647 $ 129,019 $ 14,160,190 $ 14,289,209 At September 30, 2016 , nonaccrual loans and leases totaled $171.1 million and included $11.9 million of loans and leases 90 or more days past due, $13.2 million of loans and leases 30 to 89 days past due, and $146.0 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 $129.0 million at December 31, 2015 , including $16.8 million of the loans and leases 90 or more days past due, $3.6 million of loans and leases 30 to 89 days past due, and $108.6 million of current loans and leases that were placed on nonaccrual status based on management’s judgment regarding their collectability. The following table presents the credit risk rating categories for Non‑PCI loans and leases by portfolio segment and class as of the dates indicated. Nonclassified loans and leases are those with a credit risk rating of either pass or special mention, while classified loans and leases are those with a credit risk rating of either substandard or doubtful. September 30, 2016 December 31, 2015 Classified Nonclassified Total Classified Nonclassified Total (In thousands) Real estate mortgage: Commercial $ 104,914 $ 4,173,918 $ 4,278,832 $ 98,436 $ 4,453,522 $ 4,551,958 Residential 15,876 1,170,233 1,186,109 12,627 1,123,478 1,136,105 Total real estate mortgage 120,790 5,344,151 5,464,941 111,063 5,577,000 5,688,063 Real estate construction and land: Commercial 1,839 506,572 508,411 571 342,789 343,360 Residential 366 322,738 323,104 1,395 182,965 184,360 Total real estate construction and land 2,205 829,310 831,515 1,966 525,754 527,720 Commercial: Cash flow 174,490 2,891,001 3,065,491 183,726 2,878,542 3,062,268 Asset-based 34,791 2,537,010 2,571,801 19,340 2,528,193 2,547,533 Venture capital 37,986 1,723,626 1,761,612 19,105 1,433,322 1,452,427 Equipment finance 46,916 623,867 670,783 54,054 836,295 890,349 Total commercial 294,183 7,775,504 8,069,687 276,225 7,676,352 7,952,577 Consumer 363 256,141 256,504 2,500 118,349 120,849 Total Non-PCI loans and leases $ 417,541 $ 14,205,106 $ 14,622,647 $ 391,754 $ 13,897,455 $ 14,289,209 In addition to our internal risk rating process, our federal and state banking regulators, as an integral part of their examination process, periodically review the Company’s loan and lease risk rating classifications. Our regulators may require the Company to recognize rating downgrades based on their judgments related to information available to them at the time of their examinations. Risk rating downgrades generally result in higher allowances for credit losses. Non‑PCI nonaccrual loans and leases and performing troubled debt restructured loans are considered impaired for reporting purposes. The following table presents the composition of our impaired loans and leases as of the dates indicated: September 30, 2016 December 31, 2015 Performing Total Performing Total Nonaccrual Troubled Impaired Nonaccrual Troubled Impaired Loans Debt Loans Loans Debt Loans and Restructured and and Restructured and Leases Loans Leases Leases Loans Leases (In thousands) Real estate mortgage $ 79,695 $ 59,793 $ 139,488 $ 57,277 $ 27,133 $ 84,410 Real estate construction and land 1,611 7,089 8,700 372 7,631 8,003 Commercial 89,573 3,250 92,823 69,839 5,221 75,060 Consumer 206 216 422 1,531 197 1,728 Total $ 171,085 $ 70,348 $ 241,433 $ 129,019 $ 40,182 $ 169,201 The following tables present information regarding our Non‑PCI impaired loans and leases by portfolio segment and class as of and for the dates indicated: September 30, 2016 December 31, 2015 Unpaid Unpaid Recorded Principal Related Recorded Principal Related Investment Balance Allowance Investment Balance Allowance (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 67,821 $ 68,852 $ 7,055 $ 17,967 $ 19,219 $ 777 Residential 2,517 2,573 244 2,278 2,435 681 Real estate construction and land: Residential 736 736 11 747 747 26 Commercial: Cash flow 25,936 26,971 4,686 14,072 20,312 7,079 Asset-based 4,136 4,584 2,899 3,901 4,423 2,511 Venture capital 10,781 10,856 3,331 — — — Equipment finance 46,916 52,908 12,715 11,193 11,894 8,032 Consumer 346 355 179 365 372 157 With No Related Allowance Recorded: Real estate mortgage: Commercial $ 59,090 $ 68,390 $ 58,678 $ 68,333 Residential 10,060 15,309 5,487 11,406 Real estate construction and land: Commercial 7,964 7,964 7,256 7,256 Commercial: Cash flow 2,519 4,783 2,825 5,121 Asset-based 2,535 2,575 2,729 2,726 Venture capital — — 124 125 Equipment finance — 11,709 40,216 44,194 Consumer 76 146 1,363 1,945 Total Non-PCI Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 139,488 $ 155,124 $ 7,299 $ 84,410 $ 101,393 $ 1,458 Real estate construction and land 8,700 8,700 11 8,003 8,003 26 Commercial 92,823 114,386 23,631 75,060 88,795 17,622 Consumer 422 501 179 1,728 2,317 157 Total $ 241,433 $ 278,711 $ 31,120 $ 169,201 $ 200,508 $ 19,263 Three Months Ended September 30, 2016 2015 Weighted Interest Weighted Interest Average Income Average Income Balance (1) Recognized Balance (1) Recognized (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 18,580 $ 262 $ 13,230 $ 152 Residential 2,505 15 2,478 9 Real estate construction and land: Residential 736 4 751 4 Commercial: Cash flow 25,933 9 13,653 13 Asset-based 2,730 5 4,906 48 Venture capital 6,878 — — — Equipment finance 42,913 — 9,654 — Consumer 346 3 394 4 With No Related Allowance Recorded: Real estate mortgage: Commercial $ 59,090 $ 518 $ 36,534 $ 243 Residential 9,573 70 6,061 14 Real estate construction and land: Commercial 7,870 57 7,193 62 Commercial: Cash flow 2,330 1 2,942 1 Asset-based 2,535 37 1,487 21 Equipment finance — — 43,406 — Consumer 76 — 3,208 — Total Non-PCI Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 89,748 $ 865 $ 58,303 $ 418 Real estate construction and land 8,606 61 7,944 66 Commercial 83,319 52 76,048 83 Consumer 422 3 3,602 4 Total $ 182,095 $ 981 $ 145,897 $ 571 _________________________ (1) For Non-PCI loans and leases reported as impaired at September 30, 2016 and 2015 , amounts were calculated based on the period of time such loans and leases were impaired during the reported period. Nine Months Ended September 30, 2016 2015 Weighted Interest Weighted Interest Average Income Average Income Balance (1) Recognized Balance (1) Recognized (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 18,220 $ 781 $ 13,155 $ 449 Residential 2,325 42 2,334 24 Real estate construction and land: Residential 736 11 751 12 Commercial: Cash flow 20,417 26 13,225 35 Asset-based 2,278 14 3,906 67 Venture capital 2,542 — — — Equipment finance 41,587 — 6,905 — Consumer 330 8 375 11 With No Related Allowance Recorded: Real estate mortgage: Commercial $ 54,747 $ 1,209 $ 33,263 $ 674 Residential 6,990 130 5,046 26 Real estate construction and land: Commercial 7,106 169 7,021 176 Commercial: Cash flow 2,232 1 2,917 86 Asset-based 1,828 77 1,238 51 Equipment finance — — 29,088 — Consumer 74 1 3,208 — Total Non-PCI Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 82,282 $ 2,162 $ 53,798 $ 1,173 Real estate construction and land 7,842 180 7,772 188 Commercial 70,884 118 57,279 239 Consumer 404 9 3,583 11 Total $ 161,412 $ 2,469 $ 122,432 $ 1,611 _________________________ (1) For Non-PCI loans and leases reported as impaired at September 30, 2016 and 2015 , amounts were calculated based on the period of time such loans and leases were impaired during the reported period. Troubled debt restructurings are a result of rate reductions, term extensions, fee concessions, and debt forgiveness or a combination thereof. The following tables present new troubled debt restructurings of Non-PCI loans for the periods indicated: Three Months Ended September 30, 2016 2015 Pre- Post- Pre- Post- Modification Modification Modification Modification Outstanding Outstanding Outstanding Outstanding Number Recorded Recorded Number Recorded Recorded Troubled Debt Restructurings: of Loans Investment Investment of Loans Investment Investment (Dollars in thousands) Real estate mortgage: Commercial 2 $ 1,147 $ 1,147 3 $ 574 $ 574 Residential 1 93 93 2 382 382 Real estate construction and land: Commercial 1 1,245 1,245 3 7,333 7,333 Commercial: Cash flow 2 25 25 9 883 883 Asset-based 1 25 25 1 3,431 3,431 Equipment finance 1 39,912 39,912 — — — Consumer 1 21 21 1 106 106 Total 9 $ 42,468 $ 42,468 19 $ 12,709 $ 12,709 Nine Months Ended September 30, 2016 2015 Pre- Post- Pre- Post- Modification Modification Modification Modification Outstanding Outstanding Outstanding Outstanding Number Recorded Recorded Number Recorded Recorded Troubled Debt Restructurings: of Loans Investment Investment of Loans Investment Investment (Dollars in thousands) Real estate mortgage: Commercial 7 $ 5,287 $ 5,287 15 $ 7,080 $ 7,031 Residential 7 5,136 5,136 14 2,426 2,260 Real estate construction and land: Commercial 1 1,245 1,245 6 16,947 16,947 Commercial: Cash flow 12 30,582 30,582 17 1,756 1,577 Asset-based 5 2,158 2,158 13 8,139 8,139 Equipment finance 7 44,196 42,572 9 53,338 53,338 Consumer 4 819 111 2 197 197 Total 43 $ 89,423 $ 87,091 76 $ 89,883 $ 89,489 The following tables present troubled debt restructurings that subsequently defaulted for the periods indicated: Three Months Ended September 30, 2016 2015 Troubled Debt Restructurings Number Recorded Number Recorded That Subsequently Defaulted: of Loans Investment (1) of Loans Investment (1) (Dollars in thousands) Real estate mortgage: Commercial — $ — 1 $ 1,761 Residential — — 2 276 Real estate construction: Commercial 1 1,245 — — Commercial: Asset-based 1 2 — — Total 2 $ 1,247 (2) 3 $ 2,037 (3) _________________________ (1) The population of defaulted restructured loans for the period indicated includes only those loans restructured during the preceding 12-month period. The table excludes defaulted troubled restructurings in those classes for which the recorded investment was zero at the end of the period. (2) Represents the balance at September 30, 2016 , and there were no charge-offs. (3) Represents the balance at September 30, 2015 , and there were no charge-offs. Nine Months Ended September 30, 2016 2015 Troubled Debt Restructurings Number Recorded Number Recorded That Subsequently Defaulted: of Loans Investment (1) of Loans Investment (1) (Dollars in thousands) Real estate mortgage: Commercial — $ — 2 $ 2,710 Residential — — 3 530 Real estate construction and land: Commercial 1 1,245 — — Commercial: Asset-based 1 2 — — Equipment finance 1 39,912 (4) — — Total 3 $ 41,159 (2) 5 $ 3,240 (3) _________________________ (1) The population of defaulted restructured loans for the period indicated includes only those loans restructured during the preceding 12-month period. The table excludes defaulted troubled restructurings in those classes for which the recorded investment was zero at the end of the period. (2) Represents the balance at September 30, 2016 , and there were no charge-offs. (3) Represents the balance at September 30, 2015 , and there were no charge-offs. (4) The term of the modification for this loan expired in the second quarter of 2016 and was not renewed until the third quarter of 2016. Thus, the loan was in payment default under the loan's original terms at June 30, 2016. Allowance for Loan and Lease Losses The following tables present a summary of the activity in the allowance for loan and lease losses on Non‑PCI loans and leases by portfolio segment and PCI loans for the periods indicated: Three Months Ended September 30, 2016 Real Estate Real Estate Construction Total Total Mortgage and Land Commercial Consumer Non-PCI PCI Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 29,331 $ 7,853 $ 93,404 $ 1,412 $ 132,000 $ 11,289 $ 143,289 Charge-offs (302 ) — (9,606 ) (16 ) (9,924 ) (531 ) (10,455 ) Recoveries 2,414 27 3,553 56 6,050 — 6,050 Provision 5,498 803 2,240 80 8,621 471 9,092 Balance, end of period $ 36,941 $ 8,683 $ 89,591 $ 1,532 $ 136,747 $ 11,229 $ 147,976 Nine Months Ended September 30, 2016 Real Estate Real Estate Construction Total Total Mortgage and Land Commercial Consumer Non-PCI PCI Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 36,654 $ 7,137 $ 61,082 $ 661 $ 105,534 $ 9,577 $ 115,111 Charge-offs (1,905 ) — (14,306 ) (798 ) (17,009 ) (862 ) (17,871 ) Recoveries 4,352 185 4,179 95 8,811 — 8,811 Provision (negative provision) (2,160 ) 1,361 38,636 1,574 39,411 2,514 41,925 Balance, end of period $ 36,941 $ 8,683 $ 89,591 $ 1,532 $ 136,747 $ 11,229 $ 147,976 Amount of the allowance applicable to loans and leases: Individually evaluated for impairment $ 7,299 $ 11 $ 23,631 $ 179 $ 31,120 Collectively evaluated for impairment $ 29,642 $ 8,672 $ 65,960 $ 1,353 $ 105,627 Acquired loans with deteriorated credit quality $ 11,229 The ending balance of the loan and lease portfolio is composed of loans and leases: Individually evaluated for impairment $ 139,059 $ 8,700 $ 92,637 $ 376 $ 240,772 Collectively evaluated for impairment $ 5,325,882 $ 822,815 $ 7,977,050 $ 256,128 $ 14,381,875 Acquired loans with deteriorated credit quality $ 120,199 Ending balance of loans and leases $ 5,464,941 $ 831,515 $ 8,069,687 $ 256,504 $ 14,622,647 $ 120,199 $ 14,742,846 Three Months Ended September 30, 2015 Real Estate Real Estate Construction Total Total Mortgage and Land Commercial Consumer Non-PCI PCI Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 29,908 $ 3,908 $ 50,531 $ 700 $ 85,047 $ 14,328 $ 99,375 Charge-offs (252 ) — (4,035 ) (25 ) (4,312 ) (1,119 ) (5,431 ) Recoveries 288 390 239 164 1,081 — 1,081 Provision (negative provision) 4,355 93 6,137 (85 ) 10,500 (2,254 ) 8,246 Balance, end of period $ 34,299 $ 4,391 $ 52,872 $ 754 $ 92,316 $ 10,955 $ 103,271 Nine Months Ended September 30, 2015 Real Estate Real Estate Construction Total Total Mortgage and Land Commercial Consumer Non-PCI PCI Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 25,097 $ 4,248 $ 39,858 $ 1,253 $ 70,456 $ 13,999 $ 84,455 Charge-offs (1,767 ) — (12,964 ) (115 ) (14,846 ) (1,698 ) (16,544 ) Recoveries 1,783 1,034 2,393 392 5,602 112 5,714 Provision (negative provision) 9,186 (891 ) 23,585 (776 ) 31,104 (1,458 ) 29,646 Balance, end of period $ 34,299 $ 4,391 $ 52,872 $ 754 $ 92,316 $ 10,955 $ 103,271 Amount of the allowance applicable to loans and leases: Individually evaluated for impairment $ 1,443 $ 31 $ 10,343 $ 158 $ 11,975 Collectively evaluated for impairment $ 32,856 $ 4,360 $ 42,529 $ 596 $ 80,341 Acquired loans with deteriorated credit quality $ 10,955 The ending balance of the loan and lease portfolio is composed of loans and leases: Individually evaluated for impairment $ 58,393 $ 8,047 $ 76,088 $ 3,540 $ 146,068 Collectively evaluated for impairment $ 5,446,694 $ 364,433 $ 6,175,440 $ 126,281 $ 12,112,848 Acquired loans with deteriorated credit quality $ 193,289 Ending balance of loans and leases $ 5,505,087 $ 372,480 $ 6,251,528 $ 129,821 $ 12,258,916 $ 193,289 $ 12,452,205

Foreclosed Assets

Foreclosed Assets	9 Months Ended
	Sep. 30, 2016
Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract]
Foreclosed Assets	Foreclosed Assets The following table summarizes foreclosed assets as of the dates indicated: September 30, December 31, Property Type: 2016 2015 (In thousands) Commercial real estate $ — $ 487 Construction and land development 13,800 13,801 Single family residence — 952 Total other real estate owned, net 13,800 15,240 Other foreclosed assets 1,313 6,880 Total foreclosed assets, net $ 15,113 $ 22,120 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, 2015 $ 22,120 Foreclosures 129 Reductions related to sales (7,136 ) Balance, September 30, 2016 $ 15,113

Borrowings and Subordinated Deb

Borrowings and Subordinated Debentures	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Borrowings, Subordinated Debentures and Brokered Deposit	Borrowings and Subordinated Debentures Borrowings The following table summarizes our borrowings as of the dates indicated: September 30, 2016 December 31, 2015 Amount Rate Amount Rate (Dollars in thousands) Non‑recourse debt $ 1,011 6.31 % $ 3,914 5.49 % FHLB secured advances 410,000 0.37 % 618,000 0.27 % FHLB unsecured overnight advance 90,000 0.35 % — — % American Financial Exchange overnight borrowing 40,000 0.55 % — — % Total borrowings $ 541,011 $ 621,914 The non‑recourse debt represents the payment stream of certain equipment leases sold to third parties. The debt is secured by the leased equipment and all interest rates are fixed. As of September 30, 2016 , this debt had a weighted average remaining maturity of 2.0 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 Federal Reserve Bank of San Francisco (“FRBSF”), and other financial institutions. FHLB Secured Lines of Credit. The borrowing arrangement with the FHLB is based on an FHLB program collateralized by a blanket lien on certain qualifying loans that are not pledged to the FRBSF. As of September 30, 2016 , the borrowing capacity under the FHLB secured borrowing lines was $2.0 billion . As of September 30, 2016 , the balance outstanding was $410.0 million , which consisted of a $210.0 million overnight advance and a $200.0 million one-month advance with an October 31, 2016 maturity date. As of December 31, 2015 , the entire outstanding balance of $618.0 million was an overnight advance. FRBSF Secured Line of Credit. The Bank has a secured line of credit with the FRBSF. As of September 30, 2016 , the Bank had secured borrowing capacity of $2.4 billion collateralized by liens covering $3.3 billion of certain qualifying loans. As of September 30, 2016 and December 31, 2015 , there were no balances outstanding. Federal Funds Arrangements with Commercial Banks. As of September 30, 2016 , the Bank had uncommitted unsecured lines of credit of $80.0 million with correspondent banks for the purchase of overnight funds, subject to availability of funds. These lines are renewable annually and have no unused commitment fees. As of September 30, 2016 and December 31, 2015 , there were no balances outstanding. In March 2016, the Bank became a member of the American Financial Exchange, through which it may either borrow or lend funds on an overnight basis with a group of pre-approved commercial banks. The availability of funds changes daily. As of September 30, 2016 , the balance outstanding was $40.0 million . FHLB Unsecured Line of Credit. The Bank has a $99.0 million unsecured line of credit with the FHLB for the purchase of overnight funds of which $90.0 million was outstanding at September 30, 2016 . There was no balance outstanding at December 31, 2015. Subordinated Debentures The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated: September 30, 2016 December 31, 2015 Date Maturity Rate Index Series: Amount Rate Amount Rate Issued Date (Quarterly Reset) (Dollars in thousands) Trust V $ 10,310 3.96 % $ 10,310 3.63 % 8/15/2003 9/17/2033 3 month LIBOR + 3.10 Trust VI 10,310 3.90 % 10,310 3.39 % 9/3/2003 9/15/2033 3 month LIBOR + 3.05 Trust CII 5,155 3.81 % 5,155 3.35 % 9/17/2003 9/17/2033 3 month LIBOR + 2.95 Trust VII 61,856 3.51 % 61,856 3.07 % 2/5/2004 4/23/2034 3 month LIBOR + 2.75 Trust CIII 20,619 2.54 % 20,619 2.20 % 8/15/2005 9/15/2035 3 month LIBOR + 1.69 Trust FCCI 16,495 2.45 % 16,495 2.11 % 1/25/2007 3/15/2037 3 month LIBOR + 1.60 Trust FCBI 10,310 2.40 % 10,310 2.06 % 9/30/2005 12/15/2035 3 month LIBOR + 1.55 Trust CS 2005-1 82,475 2.80 % 82,475 2.46 % 11/21/2005 12/15/2035 3 month LIBOR + 1.95 Trust CS 2005-2 128,866 2.71 % 128,866 2.27 % 12/14/2005 1/30/2036 3 month LIBOR + 1.95 Trust CS 2006-1 51,545 2.71 % 51,545 2.27 % 2/22/2006 4/30/2036 3 month LIBOR + 1.95 Trust CS 2006-2 51,550 2.71 % 51,550 2.27 % 9/27/2006 10/30/2036 3 month LIBOR + 1.95 Trust CS 2006-3 (1) 28,940 1.75 % 28,007 1.98 % 9/29/2006 10/30/2036 3 month EURIBOR + 2.05 Trust CS 2006-4 16,470 2.71 % 16,470 2.27 % 12/5/2006 1/30/2037 3 month LIBOR + 1.95 Trust CS 2006-5 6,650 2.71 % 6,650 2.27 % 12/19/2006 1/30/2037 3 month LIBOR + 1.95 Trust CS 2007-2 39,177 2.71 % 39,177 2.27 % 6/13/2007 7/30/2037 3 month LIBOR + 1.95 Gross subordinated debentures 540,728 539,795 Unamortized discount (2) (99,616 ) (103,795 ) Net subordinated debentures $ 441,112 $ 436,000 ___________________ (1) Denomination is in Euros with a value of €25.8 million . (2) Amount represents the fair value adjustment on subordinated debentures assumed in acquisitions. Interest payments made by the Company on subordinated debentures are considered dividend payments under the Board of Governors of the Federal Reserve System (“FRB”) regulations. Bank holding companies, such as PacWest, are required to notify the FRB prior to declaring and paying a dividend during any period in which quarterly and/or cumulative twelve‑month net earnings are insufficient to fund the dividend amount, among other requirements.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Lending Commitments 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, standby letters of credit, and commitments to purchase equipment being acquired for lease to others. 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 the Company has in particular classes of financial instruments. The following table presents a summary of the financial instruments described above as of the dates indicated: September 30, December 31, 2016 2015 (In thousands) Loan commitments to extend credit $ 4,156,147 $ 3,580,655 Standby letters of credit 204,616 210,292 Commitments to purchase equipment being acquired for lease to others — 6,663 $ 4,360,763 $ 3,797,610 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. 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, we invest in low income housing project partnerships, which provide income tax credits, and in small business investment companies that call for capital contributions up to an amount specified in the partnership agreements. As of September 30, 2016 and December 31, 2015 , we had commitments to contribute capital to these entities totaling $25.6 million and $19.2 million . We also had commitments to contribute up to an additional $3.0 million and $2.8 million to private equity funds at September 30, 2016 and December 31, 2015 . In addition, at September 30, 2016 we had commitments to purchase approximately $105 million of loans, which commitments terminate in June 2017. The amount purchased will be based, in part, on the amount of portfolio paydowns which occur during the commitment period. 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. Kinde Durkee Investigation The United States Attorney's Office for the Eastern District of California is conducting an investigation relating to the handling by First California Bank ("FCB") of its banking relationship with Kinde Durkee. Ms. Durkee, who had maintained certain of her accounts with FCB, was convicted in 2012 of embezzling funds from certain California politicians, among others. FCB was acquired by PacWest Bancorp and merged into Pacific Western Bank in May 2013. We understand that the investigation is focused on whether any civil or criminal laws were violated by FCB or its employees. Pacific Western is cooperating with the investigation.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2016
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 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. We use 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, core deposit intangibles, and other long‑lived assets. The following tables present information on the assets and liabilities measured and recorded at fair value on a recurring basis as of the dates indicated: Fair Value Measurements as of September 30, 2016 Measured on a Recurring Basis: Total Level 1 Level 2 Level 3 (In thousands) Securities available‑for‑sale: Residential MBS and CMOs: Agency MBS $ 528,941 $ — $ 528,941 $ — Agency CMOs 157,231 — 157,231 — Private label CMOs 138,625 — 75,804 62,821 Municipal securities 1,522,494 — 1,522,494 — Agency commercial MBS 531,273 — 531,273 — Corporate debt securities 49,011 — 49,011 — Collateralized loan obligations 156,647 — 156,647 — SBA securities 187,300 — 187,300 — Asset-backed and other securities 69,813 2,177 52,612 15,024 Total securities available-for-sale 3,341,335 2,177 3,261,313 77,845 Derivative assets 1,261 — 1,261 — Equity warrants 5,108 — — 5,108 Total recurring assets $ 3,347,704 $ 2,177 $ 3,262,574 $ 82,953 Derivative liabilities $ 1,829 $ — $ 1,829 $ — Fair Value Measurements as of December 31, 2015 Measured on a Recurring Basis: Total Level 1 Level 2 Level 3 (In thousands) Securities available‑for‑sale: Residential MBS and CMOs: Agency MBS $ 667,840 $ — $ 667,840 $ — Agency CMOs 194,755 — 194,755 — Private label CMOs 144,796 — 63,555 81,241 Municipal securities 1,547,331 — 1,547,331 — Agency commercial MBS 391,441 — 391,441 — Corporate debt securities 48,424 — 48,424 — Collateralized loan obligations 132,189 — 132,189 — SBA securities 211,157 — 211,157 — US Treasury securities 69,380 69,380 — — Agency debt securities 36,913 — 36,913 — Asset-backed and other securities 115,211 2,562 94,449 18,200 Total securities available-for-sale 3,559,437 71,942 3,388,054 99,441 Derivative assets 11,919 — 11,919 — Equity warrants 4,914 — — 4,914 Total recurring assets $ 3,576,270 $ 71,942 $ 3,399,973 $ 104,355 Derivative liabilities $ 1,397 $ — $ 1,397 $ — There were no transfers of assets either between Level 1 and Level 2 nor in or out of Level 3 of the fair value hierarchy for assets measured on a recurring basis during the nine months ended September 30, 2016 . 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 September 30, 2016 : Private Label CMOs Asset-Backed Securities Weighted Weighted Range Average Range Average Unobservable Inputs: of Inputs Input of Inputs Input Voluntary annual prepayment speeds 0.0% - 27.6% 11.5% 5% - 40% 14.7% Annual default rates 0.0% - 15.0% 2.1% 1% - 8% 3.7% Loss severity rates 0.0% - 94.5% 33.1% 10% - 91% 54.3% Discount rates 0.9% - 15.0% 3.6% 2.1% - 7.2% 2.9% 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 September 30, 2016 : Equity Warrants Weighted Average Unobservable Inputs: Input Volatility 19.3% Risk-free interest rate 1.0% Remaining life assumption (in years) 3.8 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, 2015 $ 81,241 $ 18,200 $ 4,914 Total included in earnings 1,252 47 301 Total included in other comprehensive income (1,399 ) (5 ) — Sales — — (1,597 ) Issuances — — 1,490 Net settlements (18,273 ) (3,218 ) — Balance, September 30, 2016 $ 62,821 $ 15,024 $ 5,108 The following tables present assets measured at fair value on a non‑recurring basis as of the dates indicated: Fair Value Measurement as of September 30, 2016 Measured on a Non‑Recurring Basis: Total Level 1 Level 2 Level 3 (In thousands) Impaired Non‑PCI loans $ 131,149 $ — $ 817 $ 130,332 Fair Value Measurement as of December 31, 2015 Measured on a Non‑Recurring Basis: Total Level 1 Level 2 Level 3 (In thousands) Impaired Non‑PCI loans $ 40,817 $ — $ 9,367 $ 31,450 Other real estate owned 14,101 — 14,101 — Investments carried at cost 107 — — 107 Total non-recurring $ 55,025 $ — $ 23,468 $ 31,557 The following table presents losses recognized on assets measured on a nonrecurring basis for the periods indicated: Three Months Ended Nine Months Ended September 30, September 30, Losses on Assets Measured on a Non‑Recurring Basis: 2016 2015 2016 2015 (In thousands) Impaired Non‑PCI loans $ 12,935 $ 873 $ 27,301 $ 7,623 Other real estate owned — 4,758 — 4,882 Total losses $ 12,935 $ 5,631 $ 27,301 $ 12,505 The following table presents the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis as of September 30, 2016 : Valuation Unobservable Weighted Asset: Fair Value Technique Inputs Range Average (In thousands) Impaired Non-PCI loans $ 45,571 Discounted cash flows Discount rates 0% - 8.00% 6.12% 73,775 Third party appraisals Discounts 9.00% - 22.00% 17.17% 10,986 Third party appraisals No discounts Total non-recurring Level 3 $ 130,332 ASC Topic 825, “ Financial Instruments ,” requires disclosure of the estimated fair value of certain financial instruments and the methods and significant assumptions used to estimate such fair values. Additionally, certain financial instruments and all nonfinancial instruments are excluded from the applicable disclosure requirements. The following tables present a summary of the carrying values and estimated fair values of certain financial instruments as of the dates indicated: September 30, 2016 Carrying or Contract Estimated Fair Value Amount Total Level 1 Level 2 Level 3 ( In thousands ) Financial Assets: Cash and due from banks $ 286,371 $ 286,371 $ 286,371 $ — $ — Interest‑earning deposits in financial institutions 253,994 253,994 253,994 — — Securities available‑for‑sale 3,341,335 3,341,335 2,177 3,261,313 77,845 Investment in FHLB stock 19,386 19,386 — 19,386 — Investments carried at cost 1,700 4,408 — — 4,408 Loans and leases, net 14,594,870 14,707,667 — 817 14,706,850 Derivative assets 1,261 1,261 — 1,261 — Equity warrants 5,108 5,108 — — 5,108 Financial Liabilities: Deposits: Demand, money market, interest checking, and savings deposits 13,092,753 13,092,753 — 13,092,753 — Time deposits 2,552,915 2,549,662 — 2,549,662 — Borrowings 541,011 541,067 340,000 201,067 — Subordinated debentures 441,112 424,874 — 424,874 — Derivative liabilities 1,829 1,829 — 1,829 — December 31, 2015 Carrying or Contract Estimated Fair Value Amount Total Level 1 Level 2 Level 3 ( In thousands ) Financial Assets: Cash and due from banks $ 161,020 $ 161,020 $ 161,020 $ — $ — Interest‑earning deposits in financial institutions 235,466 235,466 235,466 — — Securities available‑for‑sale 3,559,437 3,559,437 71,942 3,388,054 99,441 Investment in FHLB stock 19,710 19,710 — 19,710 — Investments carried at cost 2,267 6,789 — — 6,789 Loans and leases, net 14,363,143 14,393,558 — 9,367 14,384,191 Derivative assets 11,919 11,919 — 11,919 — Equity warrants 4,914 4,914 — — 4,914 Financial Liabilities: Deposits: Demand, money market, interest checking, and savings deposits 11,513,826 11,513,826 — 11,513,826 — Time deposits 4,152,356 4,152,920 — 4,152,920 — Borrowings 621,914 622,438 618,000 4,438 — Subordinated debentures 436,000 419,762 — 419,762 — Derivative liabilities 1,397 1,397 — 1,397 — 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), 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 2015 Annual Report on Form 10-K. Limitations Fair value estimates are made at a specific point in time and are based on relevant market information and information about the financial instrument. These estimates do not reflect income taxes or any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Because no market exists for a portion of the Company’s financial instruments, fair value estimates are based on what management believes to be reasonable judgments regarding expected future cash flows, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimated fair values are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Since the fair values have been estimated as of September 30, 2016 , the amounts that will actually be realized or paid at settlement or maturity of the instruments could be significantly different.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table presents the computations of basic and diluted net earnings per share for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2016 2016 2015 2016 2015 (Dollars in thousands, except per share data) Basic Earnings Per Share: Net earnings $ 93,895 $ 82,168 $ 69,616 $ 266,519 $ 227,778 Less: Earnings allocated to unvested restricted stock (1) (1,048 ) (863 ) (649 ) (2,983 ) (2,213 ) Net earnings allocated to common shares $ 92,847 $ 81,305 $ 68,967 $ 263,536 $ 225,565 Weighted-average basic shares and unvested restricted stock outstanding 121,818 121,799 103,048 121,739 103,038 Less: Weighted-average unvested restricted stock outstanding (1,401 ) (1,481 ) (985 ) (1,425 ) (1,055 ) Weighted-average basic shares outstanding 120,417 120,318 102,063 120,314 101,983 Basic earnings per share $ 0.77 $ 0.68 $ 0.68 $ 2.19 $ 2.21 Diluted Earnings Per Share: Net earnings allocated to common shares $ 92,847 $ 81,305 $ 68,967 $ 263,536 $ 225,565 Weighted-average basic shares outstanding 120,417 120,318 102,063 120,314 101,983 Diluted earnings per share $ 0.77 $ 0.68 $ 0.68 $ 2.19 $ 2.21 ________________________ (1) Represents cash dividends paid to holders of unvested restricted stock, net of estimated forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.

Stock Based Compensation

Stock Based Compensation	9 Months Ended
	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Based Compensation	Stock-Based Compensation The Company’s 2003 Stock Incentive Plan, or the 2003 Plan, permits stock-based compensation awards to officers, directors, key employees and consultants. As of September 30, 2016 , the 2003 Plan authorized grants of stock‑based compensation instruments to purchase or issue up to 19,686,565 shares of Company common stock, subject to adjustments provided by the 2003 Plan. As of September 30, 2016 , there were 12,450,068 shares available for grant under the 2003 Plan. Restricted stock amortization totaled $5.6 million , $6.0 million , and $3.8 million for the three months ended September 30, 2016 , June 30, 2016 and September 30, 2015 and, $16.6 million and $11.2 million for the nine months ended September 30, 2016 and 2015. Such amounts are included in "Compensation expense" on the condensed consolidated statements of earnings. The amount of unrecognized compensation expense related to unvested time-based restricted stock awards ("TRSAs") and performance-based restricted stock units ("PRSUs") as of September 30, 2016 totaled $45.7 million . Time-Based Restricted Stock Awards At September 30, 2016 , there were 1,397,715 shares of unvested TRSAs outstanding. The TRSAs generally vest over a service period of three or four years from the date of the grant or immediately upon the death of an employee. Compensation expense related to TRSAs is based on the fair value of the underlying stock on the award date and is recognized over the vesting period using the straight‑line method. Performance-Based Restricted Stock Units At September 30, 2016 , there were 153,715 units of unvested PRSUs outstanding. The PRSUs will vest only if performance goals with respect to certain financial metrics are met over a three-year performance period. 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. In the case where the performance target for the PRSU’s is based on a market condition (such as total shareholder return), the amortization is neither reversed nor suspended if it is subsequently determined that the attainment of the performance target is less than probable or improbable.

Recently Issued Accounting Stan

Recently Issued Accounting Standards	9 Months Ended
	Sep. 30, 2016
Recently Issued Accounting Standards [Abstract]
Recently Issued Accounting Standards	Recently Issued Accounting Standards In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, " Revenue Recognition (Topic 606): Revenue from Contracts with Customers." ASU 2014-09 requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most existing revenue recognition guidance in GAAP when it becomes effective. The standard permits the use of either the retrospective or cumulative effect transition method. In August 2015, the FASB issued ASU 2015-14, "Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date," which deferred the effective date of ASU 2014-09 to annual and interim periods beginning after December 15, 2017, while earlier application is permitted only for annual and interim periods beginning after December 31, 2016. The Company has not yet selected a transition method and does not expect the provisions of ASU 2014-09 to have a material impact on its consolidated financial position or results of operations. The Company will adopt this standard effective January 1, 2018. In January 2016, the FASB issued ASU 2016-01, " Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities ," which will significantly change the income statement impact of equity investments and the recognition of changes in fair value of financial liabilities when the fair value option is elected. For equity investments with readily determinable fair values, entities must measure these investments at fair value and recognize changes in fair value in net income. For equity investments without readily determinable fair values, entities have the option to either measure these investments at fair value or at cost, adjusted for changes in observable prices, minus impairment. Changes in measurement under either alternative must be recognized in net income. ASU 2016-01 will be effective for annual and interim periods beginning after December 15, 2017. The Company is evaluating the effect that ASU 2016-01 will have on its financial statements and related disclosures. In February 2016, the FASB issued ASU 2016-02, " Leases (Topic 842) ," which, among other things, requires lessees to recognize most leases on-balance sheet, which will result in an increase in their reported assets and liabilities. Lessor accounting remains substantially similar to current U.S. GAAP. ASU 2016-02 supersedes Topic 840, Leases . ASU 2016-02 is effective for annual and interim periods in fiscal years beginning after December 15, 2018. ASU 2016-02 mandates a modified retrospective transition method for all entities. The Company is evaluating the effect that ASU 2016-02 will have on its financial statements and related disclosures. In March 2016, the FASB issued ASU 2016-07, Simplifying the Transition to the Equity Method of Accounting , which eliminates the requirement for an investor to retroactively apply the equity method when its increase in ownership interest (or degree of influence) in an investee triggers equity method accounting. ASU 2016-07 is effective for interim and annual periods in fiscal years beginning after December 15, 2016. The amendments should be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. Earlier application is permitted. ASU 2016-07 does not require additional disclosures at transition. The Company does not expect the effect of ASU 2016-06 to have a material impact on its financial statements and related disclosures. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting , which is intended to improve the accounting for share-based payment transactions as part of the FASB’s simplification initiative. ASU 2016-09 changes aspects of the accounting for share-based payment award transactions, including: (1) accounting for income taxes; (2) classification of excess tax benefits on the statement of cash flows; (3) forfeitures; (4) minimum statutory tax withholding requirements; and (5) classification of employee taxes paid on the statement of cash flows when an employer withholds shares for tax-withholding purposes. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016, and interim periods within those years. Early adoption is permitted in any interim or annual period provided that the entire ASU is adopted. If an entity early adopts the amendments after the first interim period, the adoption date is as of the beginning of the year for the issues adopted by the cumulative-effect and prospective methods and any adjustments to previously reported interim periods of that fiscal year should be included in the year-to-date results. If those previously reported interim results appear in any future filings, they are reported on the revised basis. The Company does not expect the effect of ASU 2016-09 to have a material impact on its financial statements and related disclosures in the period of adoption. In subsequent periods, we expect the requirements of ASU 2016-09 to result in fluctuations in our effective tax rate from period to period based upon the timing of share-based award vestings. In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments , which significantly changes the way entities recognize impairment of many financial assets by requiring immediate recognition of estimated credit losses expected to occur over their remaining life. ASU 2016-13 is effective for interim and annual periods in fiscal years beginning after December 15, 2019. The Company is evaluating the effect that ASU 2016-13 will have on its financial statements and related disclosures. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments , which addressed eight issues related to the statement of cash flows, including proceeds from the settlement of bank-owned life insurance ("BOLI") policies. ASU 2016-15 is effective for interim and annual periods in fiscal years beginning after December 15, 2017. Early adoption is permitted, including adoption in an interim period. If an entity early adopts ASU 2016-15 in an interim period, adjustments should be reflected as of the beginning of the fiscal year that includes the interim period. An entity that elects early adoption must adopt all of the amendment in the same period. Entities should apply ASU 2016-15 using a retrospective transition method to each period presented. If it is impracticable for an entity to apply ASU 2016-15 retrospectively for some of the issues, it may apply the amendments for those issues prospectively as of the earliest date practicable. ASU 2016-15 will result in some changes in classification in the consolidated statements of cash flows, which the Company does not expect will be significant, and will not have any impact on its consolidated financial position or results of operations.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Stock Repurchase Program On October 17, 2016, PacWest’s Board of Directors authorized a new stock repurchase program (the “Stock Repurchase Program”), pursuant to which the Company may, from time to time, purchase shares of its common stock for an aggregate purchase price not to exceed $400 million . The common stock repurchases may be effected through open market purchases or in privately negotiated transactions, and may utilize any derivative or similar instrument to effect share repurchase transactions (including without limitation, accelerated share repurchase contracts, equity forward transactions, equity option transactions, equity swap transactions, cap transactions, collar transactions, floor transactions or other similar transactions or any combination of the foregoing transactions). The Stock Repurchase Program expires on December 31, 2017. The amount and exact timing of any repurchases will depend upon market conditions and other factors. The Stock Repurchase Program may be suspended or discontinued at any time. Common Stock Dividends On November 1, 2016 , the Company announced that the Board of Directors had declared a quarterly cash dividend of $0.50 per common share. The cash dividend is payable on November 30, 2016 to stockholders of record at the close of business on November 15, 2016 . We have evaluated events that have occurred subsequent to September 30, 2016 and have concluded there are no other subsequent events that would require recognition in the accompanying consolidated financial statements.

Organization Organization (Poli

Organization Organization (Policies)	9 Months Ended
	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Our interim consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“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 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. Material estimates subject to change in the near term include, among other items, the allowance for credit losses, the carrying value and useful lives 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.
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 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. We use 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, core deposit intangibles, and other long‑lived assets.
Recently Issued Accounting Standards	Recently Issued Accounting Standards In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, " Revenue Recognition (Topic 606): Revenue from Contracts with Customers." ASU 2014-09 requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most existing revenue recognition guidance in GAAP when it becomes effective. The standard permits the use of either the retrospective or cumulative effect transition method. In August 2015, the FASB issued ASU 2015-14, "Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date," which deferred the effective date of ASU 2014-09 to annual and interim periods beginning after December 15, 2017, while earlier application is permitted only for annual and interim periods beginning after December 31, 2016. The Company has not yet selected a transition method and does not expect the provisions of ASU 2014-09 to have a material impact on its consolidated financial position or results of operations. The Company will adopt this standard effective January 1, 2018. In January 2016, the FASB issued ASU 2016-01, " Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities ," which will significantly change the income statement impact of equity investments and the recognition of changes in fair value of financial liabilities when the fair value option is elected. For equity investments with readily determinable fair values, entities must measure these investments at fair value and recognize changes in fair value in net income. For equity investments without readily determinable fair values, entities have the option to either measure these investments at fair value or at cost, adjusted for changes in observable prices, minus impairment. Changes in measurement under either alternative must be recognized in net income. ASU 2016-01 will be effective for annual and interim periods beginning after December 15, 2017. The Company is evaluating the effect that ASU 2016-01 will have on its financial statements and related disclosures. In February 2016, the FASB issued ASU 2016-02, " Leases (Topic 842) ," which, among other things, requires lessees to recognize most leases on-balance sheet, which will result in an increase in their reported assets and liabilities. Lessor accounting remains substantially similar to current U.S. GAAP. ASU 2016-02 supersedes Topic 840, Leases . ASU 2016-02 is effective for annual and interim periods in fiscal years beginning after December 15, 2018. ASU 2016-02 mandates a modified retrospective transition method for all entities. The Company is evaluating the effect that ASU 2016-02 will have on its financial statements and related disclosures. In March 2016, the FASB issued ASU 2016-07, Simplifying the Transition to the Equity Method of Accounting , which eliminates the requirement for an investor to retroactively apply the equity method when its increase in ownership interest (or degree of influence) in an investee triggers equity method accounting. ASU 2016-07 is effective for interim and annual periods in fiscal years beginning after December 15, 2016. The amendments should be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. Earlier application is permitted. ASU 2016-07 does not require additional disclosures at transition. The Company does not expect the effect of ASU 2016-06 to have a material impact on its financial statements and related disclosures. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting , which is intended to improve the accounting for share-based payment transactions as part of the FASB’s simplification initiative. ASU 2016-09 changes aspects of the accounting for share-based payment award transactions, including: (1) accounting for income taxes; (2) classification of excess tax benefits on the statement of cash flows; (3) forfeitures; (4) minimum statutory tax withholding requirements; and (5) classification of employee taxes paid on the statement of cash flows when an employer withholds shares for tax-withholding purposes. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016, and interim periods within those years. Early adoption is permitted in any interim or annual period provided that the entire ASU is adopted. If an entity early adopts the amendments after the first interim period, the adoption date is as of the beginning of the year for the issues adopted by the cumulative-effect and prospective methods and any adjustments to previously reported interim periods of that fiscal year should be included in the year-to-date results. If those previously reported interim results appear in any future filings, they are reported on the revised basis. The Company does not expect the effect of ASU 2016-09 to have a material impact on its financial statements and related disclosures in the period of adoption. In subsequent periods, we expect the requirements of ASU 2016-09 to result in fluctuations in our effective tax rate from period to period based upon the timing of share-based award vestings. In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments , which significantly changes the way entities recognize impairment of many financial assets by requiring immediate recognition of estimated credit losses expected to occur over their remaining life. ASU 2016-13 is effective for interim and annual periods in fiscal years beginning after December 15, 2019. The Company is evaluating the effect that ASU 2016-13 will have on its financial statements and related disclosures. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments , which addressed eight issues related to the statement of cash flows, including proceeds from the settlement of bank-owned life insurance ("BOLI") policies. ASU 2016-15 is effective for interim and annual periods in fiscal years beginning after December 15, 2017. Early adoption is permitted, including adoption in an interim period. If an entity early adopts ASU 2016-15 in an interim period, adjustments should be reflected as of the beginning of the fiscal year that includes the interim period. An entity that elects early adoption must adopt all of the amendment in the same period. Entities should apply ASU 2016-15 using a retrospective transition method to each period presented. If it is impracticable for an entity to apply ASU 2016-15 retrospectively for some of the issues, it may apply the amendments for those issues prospectively as of the earliest date practicable. ASU 2016-15 will result in some changes in classification in the consolidated statements of cash flows, which the Company does not expect will be significant, and will not have any impact on its consolidated financial position or results of operations.

Goodwill and Other Intangible22

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill Disclosure	The following table presents the changes in the carrying amount of goodwill for the period indicated: Goodwill (In thousands) Balance, December 31, 2015 $ 2,176,291 Adjustment to acquired Square 1 tax assets (1,842 ) Reduction due to sale of PWEF leasing unit (500 ) Balance, September 30, 2016 $ 2,173,949
Intangible Assets Disclosure	The following table presents the changes in CDI and CRI and the related accumulated amortization for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2016 2016 2015 2016 2015 (In thousands) Gross Amount of CDI and CRI: Balance, beginning of period $ 76,513 $ 93,824 $ 53,090 $ 95,524 $ 53,090 Fully amortized portion (2,811 ) (17,311 ) — (20,122 ) — Reduction due to sale of PWEF leasing unit — — — (1,700 ) — Balance, end of period 73,702 76,513 53,090 73,702 53,090 Accumulated Amortization: Balance, beginning of period (32,747 ) (45,687 ) (38,889 ) (42,304 ) (35,886 ) Amortization (4,224 ) (4,371 ) (1,497 ) (13,341 ) (4,500 ) Fully amortized portion 2,811 17,311 — 20,122 — Reduction due to sale of PWEF leasing unit — — — 1,363 — Balance, end of period (34,160 ) (32,747 ) (40,386 ) (34,160 ) (40,386 ) Net CDI and CRI, end of period $ 39,542 $ 43,766 $ 12,704 $ 39,542 $ 12,704

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2016
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 carrying values of securities available-for-sale as of the dates indicated: September 30, 2016 December 31, 2015 Gross Gross Gross Gross Amortized Unrealized Unrealized Fair Amortized Unrealized Unrealized Fair Security Type: Cost Gains Losses Value Cost Gains Losses Value (In thousands) Residential mortgage-backed securities ("MBS") and collateralized mortgage obligations ("CMOs"): Agency MBS $ 518,996 $ 10,639 $ (694 ) $ 528,941 $ 660,069 $ 11,517 $ (3,746 ) $ 667,840 Agency CMOs 154,216 3,196 (181 ) 157,231 193,148 2,633 (1,026 ) 194,755 Private label CMOs 133,917 5,377 (669 ) 138,625 140,065 5,837 (1,106 ) 144,796 Municipal securities 1,437,952 84,571 (29 ) 1,522,494 1,508,968 39,435 (1,072 ) 1,547,331 Agency commercial MBS 517,163 15,299 (1,189 ) 531,273 392,729 1,509 (2,797 ) 391,441 Corporate debt securities 47,155 1,856 — 49,011 49,047 327 (950 ) 48,424 Collateralized loan obligations 155,373 1,511 (237 ) 156,647 133,192 128 (1,131 ) 132,189 SBA securities 185,639 1,909 (248 ) 187,300 211,946 41 (830 ) 211,157 US Treasury securities — — — — 70,196 — (816 ) 69,380 Agency debt securities — — — — 36,302 611 — 36,913 Asset-backed and other securities 69,189 722 (98 ) 69,813 116,723 119 (1,631 ) 115,211 Total $ 3,219,600 $ 125,080 $ (3,345 ) $ 3,341,335 $ 3,512,385 $ 62,157 $ (15,105 ) $ 3,559,437
Unrealized losses on investment securities	The following tables present the gross unrealized losses and fair values of securities available-for-sale that were in unrealized loss positions, for which other-than-temporary impairments have not been recognized in earnings, as of the dates indicated: September 30, 2016 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) Residential MBS and CMOs: Agency MBS $ 33,817 $ (100 ) $ 130,786 $ (594 ) $ 164,603 $ (694 ) Agency CMOs 18,893 (95 ) 26,476 (86 ) 45,369 (181 ) Private label CMOs 14,552 (98 ) 29,058 (571 ) 43,610 (669 ) Municipal securities 5,338 (29 ) — — 5,338 (29 ) Agency commercial MBS 77,706 (1,189 ) — — 77,706 (1,189 ) Collateralized loan obligations 2,506 (5 ) 39,197 (232 ) 41,703 (237 ) SBA securities 2,956 (9 ) 39,842 (239 ) 42,798 (248 ) Asset-backed and other securities 5 (2 ) 14,974 (96 ) 14,979 (98 ) Total $ 155,773 $ (1,527 ) $ 280,333 $ (1,818 ) $ 436,106 $ (3,345 ) December 31, 2015 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) Residential MBS and CMOs: Agency MBS $ 352,042 $ (3,480 ) $ 9,342 $ (266 ) $ 361,384 $ (3,746 ) Agency CMOs 117,786 (1,026 ) — — 117,786 (1,026 ) Private label CMOs 93,533 (1,000 ) 1,638 (106 ) 95,171 (1,106 ) Municipal securities 126,892 (1,061 ) 531 (11 ) 127,423 (1,072 ) Agency commercial MBS 236,098 (2,156 ) 14,230 (641 ) 250,328 (2,797 ) US Treasury securities 69,380 (816 ) — — 69,380 (816 ) Corporate debt securities 29,379 (950 ) — — 29,379 (950 ) Collateralized loan obligations 100,993 (1,131 ) — — 100,993 (1,131 ) SBA securities 179,942 (830 ) — — 179,942 (830 ) Asset-backed and other securities 71,619 (1,182 ) 16,091 (449 ) 87,710 (1,631 ) Total $ 1,377,664 $ (13,632 ) $ 41,832 $ (1,473 ) $ 1,419,496 $ (15,105 )
Investments Classified by Contractual Maturity Date	The following table presents the contractual maturities of our securities available-for-sale portfolio based on amortized cost and carrying value as of the date indicated: September 30, 2016 Amortized Fair Maturity: Cost Value (In thousands) Due in one year or less $ 8,352 $ 8,562 Due after one year through five years 252,427 259,096 Due after five years through ten years 714,467 738,034 Due after ten years 2,244,354 2,335,643 Total securities available-for-sale $ 3,219,600 $ 3,341,335
Investment Income	The following table presents the composition of our interest income on investment securities for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2016 2016 2015 2016 2015 (In thousands) Taxable interest $ 11,446 $ 11,406 $ 7,323 $ 34,248 $ 22,373 Non-taxable interest 10,333 10,503 6,058 31,562 14,760 Dividend income 408 511 574 1,344 3,587 Total interest income on investment securities $ 22,187 $ 22,420 $ 13,955 $ 67,154 $ 40,720

Loans and Leases (Tables)

Loans and Leases (Tables)	9 Months Ended
	Sep. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Schedule Of Composition of Loans Portfolio	The following table summarizes the composition of our loan and lease portfolio as of the dates indicated: September 30, 2016 December 31, 2015 Non-PCI Non-PCI Loans PCI Loans PCI and Leases Loans Total and Leases Loans Total (In thousands) Real estate mortgage $ 5,481,922 $ 104,896 $ 5,586,818 $ 5,706,903 $ 168,725 $ 5,875,628 Real estate construction and land 843,097 2,423 845,520 534,307 2,656 536,963 Commercial 8,104,711 12,649 8,117,360 7,977,067 17,415 7,994,482 Consumer 256,476 253 256,729 120,793 299 121,092 Total gross loans and leases 14,686,206 120,221 14,806,427 14,339,070 189,095 14,528,165 Deferred fees, net (63,559 ) (22 ) (63,581 ) (49,861 ) (50 ) (49,911 ) Total loans and leases, net of deferred fees 14,622,647 120,199 14,742,846 14,289,209 189,045 14,478,254 Allowance for loan and lease losses (136,747 ) (11,229 ) (147,976 ) (105,534 ) (9,577 ) (115,111 ) Total net loans and leases $ 14,485,900 $ 108,970 $ 14,594,870 $ 14,183,675 $ 179,468 $ 14,363,143
Delinquent loans in loan portfolio	The following tables present an aging analysis of our Non‑PCI loans and leases by portfolio segment and class as of the dates indicated: September 30, 2016 30 - 89 90 or More Days Days Total Past Due Past Due Past Due Current Total (In thousands) Real estate mortgage: Commercial $ 10,489 $ 5,772 $ 16,261 $ 4,262,571 $ 4,278,832 Residential 266 2,520 2,786 1,183,323 1,186,109 Total real estate mortgage 10,755 8,292 19,047 5,445,894 5,464,941 Real estate construction and land: Commercial 1,245 — 1,245 507,166 508,411 Residential — — — 323,104 323,104 Total real estate construction and land 1,245 — 1,245 830,270 831,515 Commercial: Cash flow 66 2,128 2,194 3,063,297 3,065,491 Asset-based 6,644 15 6,659 2,565,142 2,571,801 Venture capital — 1,095 1,095 1,760,517 1,761,612 Equipment finance 3,304 350 3,654 667,129 670,783 Total commercial 10,014 3,588 13,602 8,056,085 8,069,687 Consumer — 4 4 256,500 256,504 Total Non-PCI loans and leases $ 22,014 $ 11,884 $ 33,898 $ 14,588,749 $ 14,622,647 December 31, 2015 30 - 89 90 or More Days Days Total Past Due Past Due Past Due Current Total (In thousands) Real estate mortgage: Commercial $ 3,947 $ 13,075 $ 17,022 $ 4,534,936 $ 4,551,958 Residential 3,391 905 4,296 1,131,809 1,136,105 Total real estate mortgage 7,338 13,980 21,318 5,666,745 5,688,063 Real estate construction and land: Commercial — — — 343,360 343,360 Residential — — — 184,360 184,360 Total real estate construction and land — — — 527,720 527,720 Commercial: Cash flow 2,048 1,427 3,475 3,058,793 3,062,268 Asset-based 1 — 1 2,547,532 2,547,533 Venture capital 250 700 950 1,451,477 1,452,427 Equipment finance 359 94 453 889,896 890,349 Total commercial 2,658 2,221 4,879 7,947,698 7,952,577 Consumer 626 1,307 1,933 118,916 120,849 Total Non-PCI loans and leases $ 10,622 $ 17,508 $ 28,130 $ 14,261,079 $ 14,289,209
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables	The following table presents our nonaccrual and performing Non‑PCI loans and leases by portfolio segment and class as of the dates indicated: September 30, 2016 December 31, 2015 Nonaccrual Performing Total Nonaccrual Performing Total (In thousands) Real estate mortgage: Commercial $ 74,606 $ 4,204,226 $ 4,278,832 $ 52,363 $ 4,499,595 $ 4,551,958 Residential 5,089 1,181,020 1,186,109 4,914 1,131,191 1,136,105 Total real estate mortgage 79,695 5,385,246 5,464,941 57,277 5,630,786 5,688,063 Real estate construction and land: Commercial 1,245 507,166 508,411 — 343,360 343,360 Residential 366 322,738 323,104 372 183,988 184,360 Total real estate construction and land 1,611 829,904 831,515 372 527,348 527,720 Commercial: Cash flow 27,831 3,037,660 3,065,491 15,800 3,046,468 3,062,268 Asset-based 4,044 2,567,757 2,571,801 2,505 2,545,028 2,547,533 Venture capital 10,782 1,750,830 1,761,612 124 1,452,303 1,452,427 Equipment finance 46,916 623,867 670,783 51,410 838,939 890,349 Total commercial 89,573 7,980,114 8,069,687 69,839 7,882,738 7,952,577 Consumer 206 256,298 256,504 1,531 119,318 120,849 Total Non-PCI loans and leases $ 171,085 $ 14,451,562 $ 14,622,647 $ 129,019 $ 14,160,190 $ 14,289,209 The following table presents the composition of our impaired loans and leases as of the dates indicated: September 30, 2016 December 31, 2015 Performing Total Performing Total Nonaccrual Troubled Impaired Nonaccrual Troubled Impaired Loans Debt Loans Loans Debt Loans and Restructured and and Restructured and Leases Loans Leases Leases Loans Leases (In thousands) Real estate mortgage $ 79,695 $ 59,793 $ 139,488 $ 57,277 $ 27,133 $ 84,410 Real estate construction and land 1,611 7,089 8,700 372 7,631 8,003 Commercial 89,573 3,250 92,823 69,839 5,221 75,060 Consumer 206 216 422 1,531 197 1,728 Total $ 171,085 $ 70,348 $ 241,433 $ 129,019 $ 40,182 $ 169,201
CV of Loans Held for Investment by class by performing and nonperforming	The following table presents the credit risk rating categories for Non‑PCI loans and leases by portfolio segment and class as of the dates indicated. Nonclassified loans and leases are those with a credit risk rating of either pass or special mention, while classified loans and leases are those with a credit risk rating of either substandard or doubtful. September 30, 2016 December 31, 2015 Classified Nonclassified Total Classified Nonclassified Total (In thousands) Real estate mortgage: Commercial $ 104,914 $ 4,173,918 $ 4,278,832 $ 98,436 $ 4,453,522 $ 4,551,958 Residential 15,876 1,170,233 1,186,109 12,627 1,123,478 1,136,105 Total real estate mortgage 120,790 5,344,151 5,464,941 111,063 5,577,000 5,688,063 Real estate construction and land: Commercial 1,839 506,572 508,411 571 342,789 343,360 Residential 366 322,738 323,104 1,395 182,965 184,360 Total real estate construction and land 2,205 829,310 831,515 1,966 525,754 527,720 Commercial: Cash flow 174,490 2,891,001 3,065,491 183,726 2,878,542 3,062,268 Asset-based 34,791 2,537,010 2,571,801 19,340 2,528,193 2,547,533 Venture capital 37,986 1,723,626 1,761,612 19,105 1,433,322 1,452,427 Equipment finance 46,916 623,867 670,783 54,054 836,295 890,349 Total commercial 294,183 7,775,504 8,069,687 276,225 7,676,352 7,952,577 Consumer 363 256,141 256,504 2,500 118,349 120,849 Total Non-PCI loans and leases $ 417,541 $ 14,205,106 $ 14,622,647 $ 391,754 $ 13,897,455 $ 14,289,209
Troubled Debt Restructurings on Financing Receivables	The following tables present new troubled debt restructurings of Non-PCI loans for the periods indicated: Three Months Ended September 30, 2016 2015 Pre- Post- Pre- Post- Modification Modification Modification Modification Outstanding Outstanding Outstanding Outstanding Number Recorded Recorded Number Recorded Recorded Troubled Debt Restructurings: of Loans Investment Investment of Loans Investment Investment (Dollars in thousands) Real estate mortgage: Commercial 2 $ 1,147 $ 1,147 3 $ 574 $ 574 Residential 1 93 93 2 382 382 Real estate construction and land: Commercial 1 1,245 1,245 3 7,333 7,333 Commercial: Cash flow 2 25 25 9 883 883 Asset-based 1 25 25 1 3,431 3,431 Equipment finance 1 39,912 39,912 — — — Consumer 1 21 21 1 106 106 Total 9 $ 42,468 $ 42,468 19 $ 12,709 $ 12,709 Nine Months Ended September 30, 2016 2015 Pre- Post- Pre- Post- Modification Modification Modification Modification Outstanding Outstanding Outstanding Outstanding Number Recorded Recorded Number Recorded Recorded Troubled Debt Restructurings: of Loans Investment Investment of Loans Investment Investment (Dollars in thousands) Real estate mortgage: Commercial 7 $ 5,287 $ 5,287 15 $ 7,080 $ 7,031 Residential 7 5,136 5,136 14 2,426 2,260 Real estate construction and land: Commercial 1 1,245 1,245 6 16,947 16,947 Commercial: Cash flow 12 30,582 30,582 17 1,756 1,577 Asset-based 5 2,158 2,158 13 8,139 8,139 Equipment finance 7 44,196 42,572 9 53,338 53,338 Consumer 4 819 111 2 197 197 Total 43 $ 89,423 $ 87,091 76 $ 89,883 $ 89,489
Subsequently Defaulted Trouble Debt Restructurings	The following tables present troubled debt restructurings that subsequently defaulted for the periods indicated: Three Months Ended September 30, 2016 2015 Troubled Debt Restructurings Number Recorded Number Recorded That Subsequently Defaulted: of Loans Investment (1) of Loans Investment (1) (Dollars in thousands) Real estate mortgage: Commercial — $ — 1 $ 1,761 Residential — — 2 276 Real estate construction: Commercial 1 1,245 — — Commercial: Asset-based 1 2 — — Total 2 $ 1,247 (2) 3 $ 2,037 (3) _________________________ (1) The population of defaulted restructured loans for the period indicated includes only those loans restructured during the preceding 12-month period. The table excludes defaulted troubled restructurings in those classes for which the recorded investment was zero at the end of the period. (2) Represents the balance at September 30, 2016 , and there were no charge-offs. (3) Represents the balance at September 30, 2015 , and there were no charge-offs. Nine Months Ended September 30, 2016 2015 Troubled Debt Restructurings Number Recorded Number Recorded That Subsequently Defaulted: of Loans Investment (1) of Loans Investment (1) (Dollars in thousands) Real estate mortgage: Commercial — $ — 2 $ 2,710 Residential — — 3 530 Real estate construction and land: Commercial 1 1,245 — — Commercial: Asset-based 1 2 — — Equipment finance 1 39,912 (4) — — Total 3 $ 41,159 (2) 5 $ 3,240 (3) _________________________ (1) The population of defaulted restructured loans for the period indicated includes only those loans restructured during the preceding 12-month period. The table excludes defaulted troubled restructurings in those classes for which the recorded investment was zero at the end of the period. (2) Represents the balance at September 30, 2016 , and there were no charge-offs. (3) Represents the balance at September 30, 2015 , and there were no charge-offs. (4) The term of the modification for this loan expired in the second quarter of 2016 and was not renewed until the third quarter of 2016. Thus, the loan was in payment default under the loan's original terms at June 30, 2016.
Allowance for Credit Losses on Financing Receivables	The following tables present a summary of the activity in the allowance for loan and lease losses on Non‑PCI loans and leases by portfolio segment and PCI loans for the periods indicated: Three Months Ended September 30, 2016 Real Estate Real Estate Construction Total Total Mortgage and Land Commercial Consumer Non-PCI PCI Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 29,331 $ 7,853 $ 93,404 $ 1,412 $ 132,000 $ 11,289 $ 143,289 Charge-offs (302 ) — (9,606 ) (16 ) (9,924 ) (531 ) (10,455 ) Recoveries 2,414 27 3,553 56 6,050 — 6,050 Provision 5,498 803 2,240 80 8,621 471 9,092 Balance, end of period $ 36,941 $ 8,683 $ 89,591 $ 1,532 $ 136,747 $ 11,229 $ 147,976 Nine Months Ended September 30, 2016 Real Estate Real Estate Construction Total Total Mortgage and Land Commercial Consumer Non-PCI PCI Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 36,654 $ 7,137 $ 61,082 $ 661 $ 105,534 $ 9,577 $ 115,111 Charge-offs (1,905 ) — (14,306 ) (798 ) (17,009 ) (862 ) (17,871 ) Recoveries 4,352 185 4,179 95 8,811 — 8,811 Provision (negative provision) (2,160 ) 1,361 38,636 1,574 39,411 2,514 41,925 Balance, end of period $ 36,941 $ 8,683 $ 89,591 $ 1,532 $ 136,747 $ 11,229 $ 147,976 Amount of the allowance applicable to loans and leases: Individually evaluated for impairment $ 7,299 $ 11 $ 23,631 $ 179 $ 31,120 Collectively evaluated for impairment $ 29,642 $ 8,672 $ 65,960 $ 1,353 $ 105,627 Acquired loans with deteriorated credit quality $ 11,229 The ending balance of the loan and lease portfolio is composed of loans and leases: Individually evaluated for impairment $ 139,059 $ 8,700 $ 92,637 $ 376 $ 240,772 Collectively evaluated for impairment $ 5,325,882 $ 822,815 $ 7,977,050 $ 256,128 $ 14,381,875 Acquired loans with deteriorated credit quality $ 120,199 Ending balance of loans and leases $ 5,464,941 $ 831,515 $ 8,069,687 $ 256,504 $ 14,622,647 $ 120,199 $ 14,742,846 Three Months Ended September 30, 2015 Real Estate Real Estate Construction Total Total Mortgage and Land Commercial Consumer Non-PCI PCI Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 29,908 $ 3,908 $ 50,531 $ 700 $ 85,047 $ 14,328 $ 99,375 Charge-offs (252 ) — (4,035 ) (25 ) (4,312 ) (1,119 ) (5,431 ) Recoveries 288 390 239 164 1,081 — 1,081 Provision (negative provision) 4,355 93 6,137 (85 ) 10,500 (2,254 ) 8,246 Balance, end of period $ 34,299 $ 4,391 $ 52,872 $ 754 $ 92,316 $ 10,955 $ 103,271 Nine Months Ended September 30, 2015 Real Estate Real Estate Construction Total Total Mortgage and Land Commercial Consumer Non-PCI PCI Total (In thousands) Allowance for Loan and Lease Losses: Balance, beginning of period $ 25,097 $ 4,248 $ 39,858 $ 1,253 $ 70,456 $ 13,999 $ 84,455 Charge-offs (1,767 ) — (12,964 ) (115 ) (14,846 ) (1,698 ) (16,544 ) Recoveries 1,783 1,034 2,393 392 5,602 112 5,714 Provision (negative provision) 9,186 (891 ) 23,585 (776 ) 31,104 (1,458 ) 29,646 Balance, end of period $ 34,299 $ 4,391 $ 52,872 $ 754 $ 92,316 $ 10,955 $ 103,271 Amount of the allowance applicable to loans and leases: Individually evaluated for impairment $ 1,443 $ 31 $ 10,343 $ 158 $ 11,975 Collectively evaluated for impairment $ 32,856 $ 4,360 $ 42,529 $ 596 $ 80,341 Acquired loans with deteriorated credit quality $ 10,955 The ending balance of the loan and lease portfolio is composed of loans and leases: Individually evaluated for impairment $ 58,393 $ 8,047 $ 76,088 $ 3,540 $ 146,068 Collectively evaluated for impairment $ 5,446,694 $ 364,433 $ 6,175,440 $ 126,281 $ 12,112,848 Acquired loans with deteriorated credit quality $ 193,289 Ending balance of loans and leases $ 5,505,087 $ 372,480 $ 6,251,528 $ 129,821 $ 12,258,916 $ 193,289 $ 12,452,205
Non Purchased Credit Impaired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivables, Average Balances And Interest Income Recognized	The following tables present information regarding our Non‑PCI impaired loans and leases by portfolio segment and class as of and for the dates indicated: September 30, 2016 December 31, 2015 Unpaid Unpaid Recorded Principal Related Recorded Principal Related Investment Balance Allowance Investment Balance Allowance (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 67,821 $ 68,852 $ 7,055 $ 17,967 $ 19,219 $ 777 Residential 2,517 2,573 244 2,278 2,435 681 Real estate construction and land: Residential 736 736 11 747 747 26 Commercial: Cash flow 25,936 26,971 4,686 14,072 20,312 7,079 Asset-based 4,136 4,584 2,899 3,901 4,423 2,511 Venture capital 10,781 10,856 3,331 — — — Equipment finance 46,916 52,908 12,715 11,193 11,894 8,032 Consumer 346 355 179 365 372 157 With No Related Allowance Recorded: Real estate mortgage: Commercial $ 59,090 $ 68,390 $ 58,678 $ 68,333 Residential 10,060 15,309 5,487 11,406 Real estate construction and land: Commercial 7,964 7,964 7,256 7,256 Commercial: Cash flow 2,519 4,783 2,825 5,121 Asset-based 2,535 2,575 2,729 2,726 Venture capital — — 124 125 Equipment finance — 11,709 40,216 44,194 Consumer 76 146 1,363 1,945 Total Non-PCI Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 139,488 $ 155,124 $ 7,299 $ 84,410 $ 101,393 $ 1,458 Real estate construction and land 8,700 8,700 11 8,003 8,003 26 Commercial 92,823 114,386 23,631 75,060 88,795 17,622 Consumer 422 501 179 1,728 2,317 157 Total $ 241,433 $ 278,711 $ 31,120 $ 169,201 $ 200,508 $ 19,263 Three Months Ended September 30, 2016 2015 Weighted Interest Weighted Interest Average Income Average Income Balance (1) Recognized Balance (1) Recognized (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 18,580 $ 262 $ 13,230 $ 152 Residential 2,505 15 2,478 9 Real estate construction and land: Residential 736 4 751 4 Commercial: Cash flow 25,933 9 13,653 13 Asset-based 2,730 5 4,906 48 Venture capital 6,878 — — — Equipment finance 42,913 — 9,654 — Consumer 346 3 394 4 With No Related Allowance Recorded: Real estate mortgage: Commercial $ 59,090 $ 518 $ 36,534 $ 243 Residential 9,573 70 6,061 14 Real estate construction and land: Commercial 7,870 57 7,193 62 Commercial: Cash flow 2,330 1 2,942 1 Asset-based 2,535 37 1,487 21 Equipment finance — — 43,406 — Consumer 76 — 3,208 — Total Non-PCI Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 89,748 $ 865 $ 58,303 $ 418 Real estate construction and land 8,606 61 7,944 66 Commercial 83,319 52 76,048 83 Consumer 422 3 3,602 4 Total $ 182,095 $ 981 $ 145,897 $ 571 _________________________ (1) For Non-PCI loans and leases reported as impaired at September 30, 2016 and 2015 , amounts were calculated based on the period of time such loans and leases were impaired during the reported period. Nine Months Ended September 30, 2016 2015 Weighted Interest Weighted Interest Average Income Average Income Balance (1) Recognized Balance (1) Recognized (In thousands) With An Allowance Recorded: Real estate mortgage: Commercial $ 18,220 $ 781 $ 13,155 $ 449 Residential 2,325 42 2,334 24 Real estate construction and land: Residential 736 11 751 12 Commercial: Cash flow 20,417 26 13,225 35 Asset-based 2,278 14 3,906 67 Venture capital 2,542 — — — Equipment finance 41,587 — 6,905 — Consumer 330 8 375 11 With No Related Allowance Recorded: Real estate mortgage: Commercial $ 54,747 $ 1,209 $ 33,263 $ 674 Residential 6,990 130 5,046 26 Real estate construction and land: Commercial 7,106 169 7,021 176 Commercial: Cash flow 2,232 1 2,917 86 Asset-based 1,828 77 1,238 51 Equipment finance — — 29,088 — Consumer 74 1 3,208 — Total Non-PCI Loans and Leases With and Without an Allowance Recorded: Real estate mortgage $ 82,282 $ 2,162 $ 53,798 $ 1,173 Real estate construction and land 7,842 180 7,772 188 Commercial 70,884 118 57,279 239 Consumer 404 9 3,583 11 Total $ 161,412 $ 2,469 $ 122,432 $ 1,611 _________________________ (1) For Non-PCI loans and leases reported as impaired at September 30, 2016 and 2015 , amounts were calculated based on the period of time such loans and leases were impaired during the reported period.

Foreclosed Assets (Tables)

Foreclosed Assets (Tables)	9 Months Ended
	Sep. 30, 2016
Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract]
Other Real Estate and Foreclosed Assets	The following table summarizes foreclosed assets as of the dates indicated: September 30, December 31, Property Type: 2016 2015 (In thousands) Commercial real estate $ — $ 487 Construction and land development 13,800 13,801 Single family residence — 952 Total other real estate owned, net 13,800 15,240 Other foreclosed assets 1,313 6,880 Total foreclosed assets, net $ 15,113 $ 22,120
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, 2015 $ 22,120 Foreclosures 129 Reductions related to sales (7,136 ) Balance, September 30, 2016 $ 15,113

Borrowings and Subordinated D26

Borrowings and Subordinated Debentures (Tables)	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Schedule of Debt	The following table summarizes our borrowings as of the dates indicated: September 30, 2016 December 31, 2015 Amount Rate Amount Rate (Dollars in thousands) Non‑recourse debt $ 1,011 6.31 % $ 3,914 5.49 % FHLB secured advances 410,000 0.37 % 618,000 0.27 % FHLB unsecured overnight advance 90,000 0.35 % — — % American Financial Exchange overnight borrowing 40,000 0.55 % — — % Total borrowings $ 541,011 $ 621,914
Borrowings Subordinated Debentures And Brokered Deposits Disclosure	The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated: September 30, 2016 December 31, 2015 Date Maturity Rate Index Series: Amount Rate Amount Rate Issued Date (Quarterly Reset) (Dollars in thousands) Trust V $ 10,310 3.96 % $ 10,310 3.63 % 8/15/2003 9/17/2033 3 month LIBOR + 3.10 Trust VI 10,310 3.90 % 10,310 3.39 % 9/3/2003 9/15/2033 3 month LIBOR + 3.05 Trust CII 5,155 3.81 % 5,155 3.35 % 9/17/2003 9/17/2033 3 month LIBOR + 2.95 Trust VII 61,856 3.51 % 61,856 3.07 % 2/5/2004 4/23/2034 3 month LIBOR + 2.75 Trust CIII 20,619 2.54 % 20,619 2.20 % 8/15/2005 9/15/2035 3 month LIBOR + 1.69 Trust FCCI 16,495 2.45 % 16,495 2.11 % 1/25/2007 3/15/2037 3 month LIBOR + 1.60 Trust FCBI 10,310 2.40 % 10,310 2.06 % 9/30/2005 12/15/2035 3 month LIBOR + 1.55 Trust CS 2005-1 82,475 2.80 % 82,475 2.46 % 11/21/2005 12/15/2035 3 month LIBOR + 1.95 Trust CS 2005-2 128,866 2.71 % 128,866 2.27 % 12/14/2005 1/30/2036 3 month LIBOR + 1.95 Trust CS 2006-1 51,545 2.71 % 51,545 2.27 % 2/22/2006 4/30/2036 3 month LIBOR + 1.95 Trust CS 2006-2 51,550 2.71 % 51,550 2.27 % 9/27/2006 10/30/2036 3 month LIBOR + 1.95 Trust CS 2006-3 (1) 28,940 1.75 % 28,007 1.98 % 9/29/2006 10/30/2036 3 month EURIBOR + 2.05 Trust CS 2006-4 16,470 2.71 % 16,470 2.27 % 12/5/2006 1/30/2037 3 month LIBOR + 1.95 Trust CS 2006-5 6,650 2.71 % 6,650 2.27 % 12/19/2006 1/30/2037 3 month LIBOR + 1.95 Trust CS 2007-2 39,177 2.71 % 39,177 2.27 % 6/13/2007 7/30/2037 3 month LIBOR + 1.95 Gross subordinated debentures 540,728 539,795 Unamortized discount (2) (99,616 ) (103,795 ) Net subordinated debentures $ 441,112 $ 436,000 ___________________ (1) Denomination is in Euros with a value of €25.8 million . (2) Amount represents the fair value adjustment on subordinated debentures assumed in acquisitions.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments Disclosure	The following table presents a summary of the financial instruments described above as of the dates indicated: September 30, December 31, 2016 2015 (In thousands) Loan commitments to extend credit $ 4,156,147 $ 3,580,655 Standby letters of credit 204,616 210,292 Commitments to purchase equipment being acquired for lease to others — 6,663 $ 4,360,763 $ 3,797,610

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis	The following tables present information on the assets and liabilities measured and recorded at fair value on a recurring basis as of the dates indicated: Fair Value Measurements as of September 30, 2016 Measured on a Recurring Basis: Total Level 1 Level 2 Level 3 (In thousands) Securities available‑for‑sale: Residential MBS and CMOs: Agency MBS $ 528,941 $ — $ 528,941 $ — Agency CMOs 157,231 — 157,231 — Private label CMOs 138,625 — 75,804 62,821 Municipal securities 1,522,494 — 1,522,494 — Agency commercial MBS 531,273 — 531,273 — Corporate debt securities 49,011 — 49,011 — Collateralized loan obligations 156,647 — 156,647 — SBA securities 187,300 — 187,300 — Asset-backed and other securities 69,813 2,177 52,612 15,024 Total securities available-for-sale 3,341,335 2,177 3,261,313 77,845 Derivative assets 1,261 — 1,261 — Equity warrants 5,108 — — 5,108 Total recurring assets $ 3,347,704 $ 2,177 $ 3,262,574 $ 82,953 Derivative liabilities $ 1,829 $ — $ 1,829 $ — Fair Value Measurements as of December 31, 2015 Measured on a Recurring Basis: Total Level 1 Level 2 Level 3 (In thousands) Securities available‑for‑sale: Residential MBS and CMOs: Agency MBS $ 667,840 $ — $ 667,840 $ — Agency CMOs 194,755 — 194,755 — Private label CMOs 144,796 — 63,555 81,241 Municipal securities 1,547,331 — 1,547,331 — Agency commercial MBS 391,441 — 391,441 — Corporate debt securities 48,424 — 48,424 — Collateralized loan obligations 132,189 — 132,189 — SBA securities 211,157 — 211,157 — US Treasury securities 69,380 69,380 — — Agency debt securities 36,913 — 36,913 — Asset-backed and other securities 115,211 2,562 94,449 18,200 Total securities available-for-sale 3,559,437 71,942 3,388,054 99,441 Derivative assets 11,919 — 11,919 — Equity warrants 4,914 — — 4,914 Total recurring assets $ 3,576,270 $ 71,942 $ 3,399,973 $ 104,355 Derivative liabilities $ 1,397 $ — $ 1,397 $ —
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 September 30, 2016 : Private Label CMOs Asset-Backed Securities Weighted Weighted Range Average Range Average Unobservable Inputs: of Inputs Input of Inputs Input Voluntary annual prepayment speeds 0.0% - 27.6% 11.5% 5% - 40% 14.7% Annual default rates 0.0% - 15.0% 2.1% 1% - 8% 3.7% Loss severity rates 0.0% - 94.5% 33.1% 10% - 91% 54.3% Discount rates 0.9% - 15.0% 3.6% 2.1% - 7.2% 2.9%
Fair Value, Quantitative Inputs and Assumptions Used to Determine Fair Value	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 September 30, 2016 : Equity Warrants Weighted Average Unobservable Inputs: Input Volatility 19.3% Risk-free interest rate 1.0% Remaining life assumption (in years) 3.8
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, 2015 $ 81,241 $ 18,200 $ 4,914 Total included in earnings 1,252 47 301 Total included in other comprehensive income (1,399 ) (5 ) — Sales — — (1,597 ) Issuances — — 1,490 Net settlements (18,273 ) (3,218 ) — Balance, September 30, 2016 $ 62,821 $ 15,024 $ 5,108
Assets carried at fair value on a nonrecurring basis	The following tables present assets measured at fair value on a non‑recurring basis as of the dates indicated: Fair Value Measurement as of September 30, 2016 Measured on a Non‑Recurring Basis: Total Level 1 Level 2 Level 3 (In thousands) Impaired Non‑PCI loans $ 131,149 $ — $ 817 $ 130,332 Fair Value Measurement as of December 31, 2015 Measured on a Non‑Recurring Basis: Total Level 1 Level 2 Level 3 (In thousands) Impaired Non‑PCI loans $ 40,817 $ — $ 9,367 $ 31,450 Other real estate owned 14,101 — 14,101 — Investments carried at cost 107 — — 107 Total non-recurring $ 55,025 $ — $ 23,468 $ 31,557
Net Losses (Gains) on Nonrecurring Assets	The following table presents losses recognized on assets measured on a nonrecurring basis for the periods indicated: Three Months Ended Nine Months Ended September 30, September 30, Losses on Assets Measured on a Non‑Recurring Basis: 2016 2015 2016 2015 (In thousands) Impaired Non‑PCI loans $ 12,935 $ 873 $ 27,301 $ 7,623 Other real estate owned — 4,758 — 4,882 Total losses $ 12,935 $ 5,631 $ 27,301 $ 12,505
Fair Value Inputs, Assets, Quantitative Information	The following table presents the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis as of September 30, 2016 : Valuation Unobservable Weighted Asset: Fair Value Technique Inputs Range Average (In thousands) Impaired Non-PCI loans $ 45,571 Discounted cash flows Discount rates 0% - 8.00% 6.12% 73,775 Third party appraisals Discounts 9.00% - 22.00% 17.17% 10,986 Third party appraisals No discounts Total non-recurring Level 3 $ 130,332
Fair Value, by Balance Sheet Grouping	The following tables present a summary of the carrying values and estimated fair values of certain financial instruments as of the dates indicated: September 30, 2016 Carrying or Contract Estimated Fair Value Amount Total Level 1 Level 2 Level 3 ( In thousands ) Financial Assets: Cash and due from banks $ 286,371 $ 286,371 $ 286,371 $ — $ — Interest‑earning deposits in financial institutions 253,994 253,994 253,994 — — Securities available‑for‑sale 3,341,335 3,341,335 2,177 3,261,313 77,845 Investment in FHLB stock 19,386 19,386 — 19,386 — Investments carried at cost 1,700 4,408 — — 4,408 Loans and leases, net 14,594,870 14,707,667 — 817 14,706,850 Derivative assets 1,261 1,261 — 1,261 — Equity warrants 5,108 5,108 — — 5,108 Financial Liabilities: Deposits: Demand, money market, interest checking, and savings deposits 13,092,753 13,092,753 — 13,092,753 — Time deposits 2,552,915 2,549,662 — 2,549,662 — Borrowings 541,011 541,067 340,000 201,067 — Subordinated debentures 441,112 424,874 — 424,874 — Derivative liabilities 1,829 1,829 — 1,829 — December 31, 2015 Carrying or Contract Estimated Fair Value Amount Total Level 1 Level 2 Level 3 ( In thousands ) Financial Assets: Cash and due from banks $ 161,020 $ 161,020 $ 161,020 $ — $ — Interest‑earning deposits in financial institutions 235,466 235,466 235,466 — — Securities available‑for‑sale 3,559,437 3,559,437 71,942 3,388,054 99,441 Investment in FHLB stock 19,710 19,710 — 19,710 — Investments carried at cost 2,267 6,789 — — 6,789 Loans and leases, net 14,363,143 14,393,558 — 9,367 14,384,191 Derivative assets 11,919 11,919 — 11,919 — Equity warrants 4,914 4,914 — — 4,914 Financial Liabilities: Deposits: Demand, money market, interest checking, and savings deposits 11,513,826 11,513,826 — 11,513,826 — Time deposits 4,152,356 4,152,920 — 4,152,920 — Borrowings 621,914 622,438 618,000 4,438 — Subordinated debentures 436,000 419,762 — 419,762 — Derivative liabilities 1,397 1,397 — 1,397 —

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Net Income Per Share	The following table presents the computations of basic and diluted net earnings per share for the periods indicated: Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2016 2016 2015 2016 2015 (Dollars in thousands, except per share data) Basic Earnings Per Share: Net earnings $ 93,895 $ 82,168 $ 69,616 $ 266,519 $ 227,778 Less: Earnings allocated to unvested restricted stock (1) (1,048 ) (863 ) (649 ) (2,983 ) (2,213 ) Net earnings allocated to common shares $ 92,847 $ 81,305 $ 68,967 $ 263,536 $ 225,565 Weighted-average basic shares and unvested restricted stock outstanding 121,818 121,799 103,048 121,739 103,038 Less: Weighted-average unvested restricted stock outstanding (1,401 ) (1,481 ) (985 ) (1,425 ) (1,055 ) Weighted-average basic shares outstanding 120,417 120,318 102,063 120,314 101,983 Basic earnings per share $ 0.77 $ 0.68 $ 0.68 $ 2.19 $ 2.21 Diluted Earnings Per Share: Net earnings allocated to common shares $ 92,847 $ 81,305 $ 68,967 $ 263,536 $ 225,565 Weighted-average basic shares outstanding 120,417 120,318 102,063 120,314 101,983 Diluted earnings per share $ 0.77 $ 0.68 $ 0.68 $ 2.19 $ 2.21 ________________________ (1) Represents cash dividends paid to holders of unvested restricted stock, net of estimated forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.

Organization (Details)

Organization (Details) $ in Thousands	Mar. 31, 2016USD ($)	Sep. 30, 2016USD ($)acquisitionsegmentbank_branch	Sep. 30, 2015USD ($)	Dec. 31, 2015USD ($)
General Introduction [Abstract]
Assets		$ 21,315,291		$ 21,288,490
Gross loans and leases		14,800,000
Total deposits		15,645,668		15,666,182
Total stockholders' equity		$ 4,542,595		$ 4,397,691
Number of businesses acquired | acquisition		28
Proceeds from sale of leasing unit		$ (138,955)	$ 0
Number of segments | segment		1
CapitalSource Inc.
General Introduction [Abstract]
Effective date of acquisition		Apr. 7, 2014
PWEF
General Introduction [Abstract]
Proceeds from sale of leasing unit	$ (139,000)
CALIFORNIA
General Introduction [Abstract]
Retail branch locations | bank_branch		79
NORTH CAROLINA
General Introduction [Abstract]
Retail branch locations | bank_branch		1

Acquisitions Textual (Details)

Acquisitions Textual (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Oct. 06, 2015
Business Acquisition [Line Items]
Goodwill	$ 2,173,949	$ 2,176,291
Square 1 Financial, Inc.
Business Acquisition [Line Items]
Assets acquired			$ 4,600,000
Liabilities assumed			3,800,000
Goodwill			$ 446,100

Goodwill and Other Intangible32

Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Weighted average useful life	5 years 6 months 20 days
Intangible asset amortization	$ 4,224	$ 4,371	$ 1,497	$ 13,341	$ 4,500
Aggregate amortization expense 2017	11,500			11,500
Aggregate amortization expense 2018	8,800			8,800
Aggregate amortization expense 2019	6,700			6,700
Aggregate amortization expense 2020	4,700			4,700
Aggregate amortization expense 2021	$ 3,000			3,000
Reduction due to sale of PWEF leasing unit				(500)
Loss on sale of leasing unit				(720)	$ 0
Scenario, Forecast
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization						$ 16,500
PWEF
Finite-Lived Intangible Assets [Line Items]
Loss on sale of leasing unit				$ 700

Goodwill and Other Intangible33

Goodwill and Other Intangible Assets (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)
Goodwill [Roll Forward]
Balance, December 31, 2015	$ 2,176,291
Adjustment to acquired Square 1 tax assets	(1,842)
Reduction due to sale of PWEF leasing unit	(500)
Balance, September 30, 2016	$ 2,173,949

Goodwill and Other Intangible34

Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Finite-lived Intangible Assets [Roll Forward]
CDI and CRI Balance, beginning of period	$ 76,513	$ 93,824	$ 53,090	$ 95,524	$ 53,090
Fully amortized portion	(2,811)	(17,311)	0	(20,122)	0
Reduction due to sale of PWEF leasing unit	0	0	0	(1,363)	0
CDI and CRI Balance, end of period	73,702	76,513	53,090	73,702	53,090
Accumulated Amortization, beginning of period	(32,747)	(45,687)	(38,889)	(42,304)	(35,886)
Amortization	(4,224)	(4,371)	(1,497)	(13,341)	(4,500)
Accumulated Amortization, end of period	(34,160)	(32,747)	(40,386)	(34,160)	(40,386)
Net CDI and CRI, end of period	39,542	43,766	12,704	39,542	12,704
CDI and CRI
Finite-lived Intangible Assets [Roll Forward]
Fully amortized portion	(2,811)	(17,311)	0	(20,122)	0
Reduction due to sale of PWEF leasing unit	$ 0	$ 0	$ 0	$ (1,700)	$ 0

Investment Securities (Details

Investment Securities (Details 1) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	$ 3,219,600	$ 3,512,385
Available-for-sale Securities, Gross Unrealized Gain	125,080	62,157
Available-for-sale Securities, Gross Unrealized Loss	(3,345)	(15,105)
Securities available‑for‑sale	3,341,335	3,559,437
Government agency and government-sponsored enterprise pass through securities
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	518,996	660,069
Available-for-sale Securities, Gross Unrealized Gain	10,639	11,517
Available-for-sale Securities, Gross Unrealized Loss	(694)	(3,746)
Securities available‑for‑sale	528,941	667,840
Government agency and government-sponsored enterprise collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	154,216	193,148
Available-for-sale Securities, Gross Unrealized Gain	3,196	2,633
Available-for-sale Securities, Gross Unrealized Loss	(181)	(1,026)
Securities available‑for‑sale	157,231	194,755
Private label collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	133,917	140,065
Available-for-sale Securities, Gross Unrealized Gain	5,377	5,837
Available-for-sale Securities, Gross Unrealized Loss	(669)	(1,106)
Securities available‑for‑sale	138,625	144,796
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	1,437,952	1,508,968
Available-for-sale Securities, Gross Unrealized Gain	84,571	39,435
Available-for-sale Securities, Gross Unrealized Loss	(29)	(1,072)
Securities available‑for‑sale	1,522,494	1,547,331
Government agency and government-sponsored enterprise commercial mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	517,163	392,729
Available-for-sale Securities, Gross Unrealized Gain	15,299	1,509
Available-for-sale Securities, Gross Unrealized Loss	(1,189)	(2,797)
Securities available‑for‑sale	531,273	391,441
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	47,155	49,047
Available-for-sale Securities, Gross Unrealized Gain	1,856	327
Available-for-sale Securities, Gross Unrealized Loss	0	(950)
Securities available‑for‑sale	49,011	48,424
Collateralized loan obligations
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	155,373	133,192
Available-for-sale Securities, Gross Unrealized Gain	1,511	128
Available-for-sale Securities, Gross Unrealized Loss	(237)	(1,131)
Securities available‑for‑sale	156,647	132,189
SBA securities
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	185,639	211,946
Available-for-sale Securities, Gross Unrealized Gain	1,909	41
Available-for-sale Securities, Gross Unrealized Loss	(248)	(830)
Securities available‑for‑sale	187,300	211,157
US Treasury securities
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	0	70,196
Available-for-sale Securities, Gross Unrealized Gain	0	0
Available-for-sale Securities, Gross Unrealized Loss	0	(816)
Securities available‑for‑sale	0	69,380
US Government-sponsored Enterprises Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	0	36,302
Available-for-sale Securities, Gross Unrealized Gain	0	611
Available-for-sale Securities, Gross Unrealized Loss	0	0
Securities available‑for‑sale	0	36,913
Asset-backed and other securities
Schedule of Available-for-sale Securities [Line Items]
Total securities available-for-sale	69,189	116,723
Available-for-sale Securities, Gross Unrealized Gain	722	119
Available-for-sale Securities, Gross Unrealized Loss	(98)	(1,631)
Securities available‑for‑sale	$ 69,813	$ 115,211

Investment Securities (Detail36

Investment Securities (Details 2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 155,773	$ 1,377,664
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(1,527)	(13,632)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	280,333	41,832
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(1,818)	(1,473)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	436,106	1,419,496
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	(3,345)	(15,105)
Government agency and government-sponsored enterprise pass through securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	33,817	352,042
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(100)	(3,480)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	130,786	9,342
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(594)	(266)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	164,603	361,384
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	(694)	(3,746)
Government agency and government-sponsored enterprise collateralized mortgage obligations
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	18,893	117,786
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(95)	(1,026)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	26,476	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(86)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	45,369	117,786
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	(181)	(1,026)
Private label collateralized mortgage obligations
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	14,552	93,533
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(98)	(1,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	29,058	1,638
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(571)	(106)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	43,610	95,171
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	(669)	(1,106)
Municipal securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	5,338	126,892
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(29)	(1,061)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	531
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	0	(11)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	5,338	127,423
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	(29)	(1,072)
Government agency and government-sponsored enterprise commercial mortgage-backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	77,706	236,098
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(1,189)	(2,156)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	14,230
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	0	(641)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	77,706	250,328
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	(1,189)	(2,797)
US Treasury securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		69,380
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss		(816)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		69,380
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss		(816)
Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		29,379
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss		(950)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		29,379
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss		(950)
Collateralized loan obligations
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	2,506	100,993
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(5)	(1,131)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	39,197	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(232)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	41,703	100,993
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	(237)	(1,131)
SBA securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	2,956	179,942
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(9)	(830)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	39,842	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(239)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	42,798	179,942
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	(248)	(830)
Asset-backed and other securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	5	71,619
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(2)	(1,182)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	14,974	16,091
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(96)	(449)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	14,979	87,710
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	$ (98)	$ (1,631)

Investment Securities (Detail37

Investment Securities (Details 3) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Amortized Cost
Due in one year or less	$ 8,352
Due after one year through five years	252,427
Due after five years through ten years	714,467
Due after ten years	2,244,354
Total securities available-for-sale	3,219,600	$ 3,512,385
Fair Value
Due in one year or less	8,562
Due after one year through five years	259,096
Due after five years through ten years	738,034
Due after ten years	2,335,643
Total securities available-for-sale	$ 3,341,335	$ 3,559,437

Investment Securities (Detail38

Investment Securities (Details 4) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Taxable interest	$ 11,446	$ 11,406	$ 7,323	$ 34,248	$ 22,373
Non-taxable interest	10,333	10,503	6,058	31,562	14,760
Dividend income	408	511	574	1,344	3,587
Total interest income on investment securities	$ 22,187	$ 22,420	$ 13,955	$ 67,154	$ 40,720

Investment Securities (Detail39

Investment Securities (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Schedule of Available-for-sale Securities [Line Items]
AFS securities pledged as collateral	$ 342,200,000		$ 342,200,000
Proceeds from sales			$ 392,841,000	$ 212,169,000
Gross realized gains on sale of securities	10,520,000	$ 4,400,000
Gross realized losses on sale of securities	1,600,000	700,000
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales	39,100,000	52,000,000
Gross realized gains on sale of securities	1,000,000	700,000
Gross realized losses on sale of securities	600,000
Available-for-sale Securities
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales	$ 383,900,000	$ 208,400,000

Loans and Leases (Details)

Loans and Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	$ 14,806,427		$ 14,528,165
Loans and Leases Receivable, Deferred Income	(63,581)		(49,911)
Loans held for investment, net	14,742,846		14,478,254
Loans and Leases Receivable, Allowance	(147,976)		(115,111)
Total loans and leases, net	14,594,870		14,363,143
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	14,686,206		14,339,070
Loans and Leases Receivable, Deferred Income	(63,559)		(49,861)
Loans held for investment, net	14,622,647		14,289,209	$ 12,258,916
Loans and Leases Receivable, Allowance	(136,747)	$ (132,000)	(105,534)	(92,316)	$ (85,047)	$ (70,456)
Total loans and leases, net	14,485,900		14,183,675
Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	120,221		189,095
Loans and Leases Receivable, Deferred Income	(22)		(50)
Loans held for investment, net	120,199		189,045	193,289
Loans and Leases Receivable, Allowance	(11,229)		(9,577)
Total loans and leases, net	108,970		179,468
NonPCI and PCI Loans
Financing Receivable, Recorded Investment [Line Items]
Total loans and leases, net			14,363,143
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	5,481,922		5,706,903
Loans held for investment, net	5,464,941		5,688,063	5,505,087
Loans and Leases Receivable, Allowance	(36,941)	(29,331)	(36,654)	(34,299)	(29,908)	(25,097)
Real Estate Mortgage | Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	104,896		168,725
Real Estate Mortgage | NonPCI and PCI Loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	5,586,818		5,875,628
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	843,097		534,307
Loans held for investment, net	831,515		527,720	372,480
Loans and Leases Receivable, Allowance	(8,683)	(7,853)	(7,137)	(4,391)	(3,908)	(4,248)
Real Estate Construction and Land | Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	2,423		2,656
Real Estate Construction and Land | NonPCI and PCI Loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	845,520		536,963
Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	8,104,711		7,977,067
Loans held for investment, net	8,069,687		7,952,577	6,251,528
Loans and Leases Receivable, Allowance	(89,591)	(93,404)	(61,082)	(52,872)	(50,531)	(39,858)
Commercial | Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	12,649		17,415
Commercial | NonPCI and PCI Loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	8,117,360		7,994,482
Consumer | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	256,476		120,793
Loans held for investment, net	256,504		120,849	129,821
Loans and Leases Receivable, Allowance	(1,532)	$ (1,412)	(661)	$ (754)	$ (700)	$ (1,253)
Consumer | Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	253		299
Consumer | NonPCI and PCI Loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans and leases	$ 256,729		$ 121,092

Loans and Leases (Details 1)

Loans and Leases (Details 1) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Delinquent loans in loan portfolio
30-89 Days Past Due	$ 13,200	$ 3,600
90 or More Days Past Due	11,900	16,800
Loans held for investment, net	14,742,846	14,478,254
Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	22,014	10,622
90 or More Days Past Due	11,884	17,508
Total Past Due	33,898	28,130
Current	14,588,749	14,261,079
Loans held for investment, net	14,622,647	14,289,209	$ 12,258,916
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	10,755	7,338
90 or More Days Past Due	8,292	13,980
Total Past Due	19,047	21,318
Current	5,445,894	5,666,745
Loans held for investment, net	5,464,941	5,688,063	5,505,087
Real Estate Mortgage | Commercial real estate | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	10,489	3,947
90 or More Days Past Due	5,772	13,075
Total Past Due	16,261	17,022
Current	4,262,571	4,534,936
Loans held for investment, net	4,278,832	4,551,958
Real Estate Mortgage | Residential Real Estate | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	266	3,391
90 or More Days Past Due	2,520	905
Total Past Due	2,786	4,296
Current	1,183,323	1,131,809
Loans held for investment, net	1,186,109	1,136,105
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	1,245	0
90 or More Days Past Due	0	0
Total Past Due	1,245	0
Current	830,270	527,720
Loans held for investment, net	831,515	527,720	372,480
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	1,245	0
90 or More Days Past Due	0	0
Total Past Due	1,245	0
Current	507,166	343,360
Loans held for investment, net	508,411	343,360
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	0	0
90 or More Days Past Due	0	0
Total Past Due	0	0
Current	323,104	184,360
Loans held for investment, net	323,104	184,360
Commercial | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	10,014	2,658
90 or More Days Past Due	3,588	2,221
Total Past Due	13,602	4,879
Current	8,056,085	7,947,698
Loans held for investment, net	8,069,687	7,952,577	6,251,528
Commercial | Cash Flow | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	66	2,048
90 or More Days Past Due	2,128	1,427
Total Past Due	2,194	3,475
Current	3,063,297	3,058,793
Loans held for investment, net	3,065,491	3,062,268
Commercial | Asset Based | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	6,644	1
90 or More Days Past Due	15	0
Total Past Due	6,659	1
Current	2,565,142	2,547,532
Loans held for investment, net	2,571,801	2,547,533
Commercial | Venture Capital Loans | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	0	250
90 or More Days Past Due	1,095	700
Total Past Due	1,095	950
Current	1,760,517	1,451,477
Loans held for investment, net	1,761,612	1,452,427
Commercial | Equipment Finance Commercial Financing Receivable | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	3,304	359
90 or More Days Past Due	350	94
Total Past Due	3,654	453
Current	667,129	889,896
Loans held for investment, net	670,783	890,349
Consumer | Non Purchased Credit Impaired Loans and Leases
Delinquent loans in loan portfolio
30-89 Days Past Due	0	626
90 or More Days Past Due	4	1,307
Total Past Due	4	1,933
Current	256,500	118,916
Loans held for investment, net	$ 256,504	$ 120,849	$ 129,821

Loans and Leases (Details 2)

Loans and Leases (Details 2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Financing Receivable, Impaired [Line Items]
Nonaccrual	$ 171,085	$ 129,019
Loans held for investment	14,742,846	14,478,254
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	171,085	129,019
Loans held for investment	14,622,647	14,289,209	$ 12,258,916
Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	14,451,562	14,160,190
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	79,695	57,277
Loans held for investment	5,464,941	5,688,063	5,505,087
Real Estate Mortgage | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	5,385,246	5,630,786
Real Estate Mortgage | Commercial real estate | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	74,606	52,363
Loans held for investment	4,278,832	4,551,958
Real Estate Mortgage | Commercial real estate | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	4,204,226	4,499,595
Real Estate Mortgage | Residential Real Estate | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	5,089	4,914
Loans held for investment	1,186,109	1,136,105
Real Estate Mortgage | Residential Real Estate | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	1,181,020	1,131,191
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	1,611	372
Loans held for investment	831,515	527,720	372,480
Real Estate Construction and Land | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	829,904	527,348
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	1,245	0
Loans held for investment	508,411	343,360
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	507,166	343,360
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	366	372
Loans held for investment	323,104	184,360
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	322,738	183,988
Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	89,573	69,839
Loans held for investment	8,069,687	7,952,577	6,251,528
Commercial | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	7,980,114	7,882,738
Commercial | Cash Flow | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	27,831	15,800
Loans held for investment	3,065,491	3,062,268
Commercial | Cash Flow | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	3,037,660	3,046,468
Commercial | Asset Based | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	4,044	2,505
Loans held for investment	2,571,801	2,547,533
Commercial | Asset Based | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	2,567,757	2,545,028
Commercial | Venture Capital Loans | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	10,782	124
Loans held for investment	1,761,612	1,452,427
Commercial | Venture Capital Loans | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	1,750,830	1,452,303
Commercial | Equipment Finance Commercial Financing Receivable | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	46,916	51,410
Loans held for investment	670,783	890,349
Commercial | Equipment Finance Commercial Financing Receivable | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	623,867	838,939
Consumer | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Nonaccrual	206	1,531
Loans held for investment	256,504	120,849	$ 129,821
Consumer | Performing | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Impaired [Line Items]
Loans held for investment	$ 256,298	$ 119,318

Loans and Leases (Details 3)

Loans and Leases (Details 3) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	$ 14,742,846	$ 14,478,254
Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	14,622,647	14,289,209	$ 12,258,916
Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	417,541	391,754
Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	14,205,106	13,897,455
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	5,464,941	5,688,063	5,505,087
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	120,790	111,063
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	5,344,151	5,577,000
Real Estate Mortgage | Commercial real estate | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	4,278,832	4,551,958
Real Estate Mortgage | Commercial real estate | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	104,914	98,436
Real Estate Mortgage | Commercial real estate | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	4,173,918	4,453,522
Real Estate Mortgage | Residential Real Estate | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	1,186,109	1,136,105
Real Estate Mortgage | Residential Real Estate | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	15,876	12,627
Real Estate Mortgage | Residential Real Estate | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	1,170,233	1,123,478
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	831,515	527,720	372,480
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	2,205	1,966
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	829,310	525,754
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	508,411	343,360
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	1,839	571
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	506,572	342,789
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	323,104	184,360
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	366	1,395
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	322,738	182,965
Commercial | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	8,069,687	7,952,577	6,251,528
Commercial | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	294,183	276,225
Commercial | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	7,775,504	7,676,352
Commercial | Cash Flow | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	3,065,491	3,062,268
Commercial | Cash Flow | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	174,490	183,726
Commercial | Cash Flow | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	2,891,001	2,878,542
Commercial | Asset Based | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	2,571,801	2,547,533
Commercial | Asset Based | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	34,791	19,340
Commercial | Asset Based | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	2,537,010	2,528,193
Commercial | Venture Capital Loans | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	1,761,612	1,452,427
Commercial | Venture Capital Loans | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	37,986	19,105
Commercial | Venture Capital Loans | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	1,723,626	1,433,322
Commercial | Equipment Finance Commercial Financing Receivable | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	670,783	890,349
Commercial | Equipment Finance Commercial Financing Receivable | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	46,916	54,054
Commercial | Equipment Finance Commercial Financing Receivable | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	623,867	836,295
Consumer | Non Purchased Credit Impaired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	256,504	120,849	$ 129,821
Consumer | Non Purchased Credit Impaired Loans and Leases | Classified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	363	2,500
Consumer | Non Purchased Credit Impaired Loans and Leases | Nonclassified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	$ 256,141	$ 118,349

Loans and Leases (Details 4)

Loans and Leases (Details 4) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	$ 171,085	$ 129,019
Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	171,085	129,019
Performing Restructured Loans	70,348	40,182
Total Impaired Loans/Leases	241,433	169,201
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	79,695	57,277
Performing Restructured Loans	59,793	27,133
Total Impaired Loans/Leases	139,488	84,410
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/Leases	1,611	372
Performing Restructured Loans	7,089	7,631
Total Impaired Loans/Leases	8,700	8,003
Commercial | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	89,573	69,839
Performing Restructured Loans	3,250	5,221
Total Impaired Loans/Leases	92,823	75,060
Consumer | Non Purchased Credit Impaired Loans and Leases
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Nonaccrual Loans/Leases	206	1,531
Performing Restructured Loans	216	197
Total Impaired Loans/Leases	$ 422	$ 1,728

Loans and Leases (Details 5)

Loans and Leases (Details 5) - Non Purchased Credit Impaired Loans and Leases - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance		$ 31,120		$ 31,120		$ 19,263
Total Impaired Loans/Leases		241,433		241,433		169,201
Impaired Financing Receivable, Unpaid Principal Balance		278,711		278,711		200,508
Impaired Financing Receivable, Average Recorded Investment	[1]	182,095	$ 145,897	161,412	$ 122,432
Impaired Financing Receivable, Interest Income, Accrual Method		981	571	2,469	1,611
Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance		7,299		7,299		1,458
Total Impaired Loans/Leases		139,488		139,488		84,410
Impaired Financing Receivable, Unpaid Principal Balance		155,124		155,124		101,393
Impaired Financing Receivable, Average Recorded Investment	[1]	89,748	58,303	82,282	53,798
Impaired Financing Receivable, Interest Income, Accrual Method		865	418	2,162	1,173
Real Estate Construction and Land
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance		11		11		26
Total Impaired Loans/Leases		8,700		8,700		8,003
Impaired Financing Receivable, Unpaid Principal Balance		8,700		8,700		8,003
Impaired Financing Receivable, Average Recorded Investment	[1]	8,606	7,944	7,842	7,772
Impaired Financing Receivable, Interest Income, Accrual Method		61	66	180	188
Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance		23,631		23,631		17,622
Total Impaired Loans/Leases		92,823		92,823		75,060
Impaired Financing Receivable, Unpaid Principal Balance		114,386		114,386		88,795
Impaired Financing Receivable, Average Recorded Investment	[1]	83,319	76,048	70,884	57,279
Impaired Financing Receivable, Interest Income, Accrual Method		52	83	118	239
Consumer
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment		346		346		365
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		355		355		372
Impaired Financing Receivable, Related Allowance		179		179		157
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		76		76		1,363
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		146		146		1,945
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	[1]	346	394	330	375
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		3	4	8	11
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	[1]	76	3,208	74	3,208
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0	1	0
Total Impaired Loans/Leases		422		422		1,728
Impaired Financing Receivable, Unpaid Principal Balance		501		501		2,317
Impaired Financing Receivable, Average Recorded Investment	[1]	422	3,602	404	3,583
Impaired Financing Receivable, Interest Income, Accrual Method		3	4	9	11
Cash Flow | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment		25,936		25,936		14,072
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		26,971		26,971		20,312
Impaired Financing Receivable, Related Allowance		4,686		4,686		7,079
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		2,519		2,519		2,825
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		4,783		4,783		5,121
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	[1]	25,933	13,653	20,417	13,225
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		9	13	26	35
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	[1]	2,330	2,942	2,232	2,917
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		1	1	1	86
Asset Based | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment		4,136		4,136		3,901
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		4,584		4,584		4,423
Impaired Financing Receivable, Related Allowance		2,899		2,899		2,511
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		2,535		2,535		2,729
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		2,575		2,575		2,726
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	[1]	2,730	4,906	2,278	3,906
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		5	48	14	67
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	[1]	2,535	1,487	1,828	1,238
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		37	21	77	51
Venture Capital Loans | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment		10,781		10,781		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		10,856		10,856		0
Impaired Financing Receivable, Related Allowance		3,331		3,331		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		0		0		124
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		0		0		125
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	[1]	6,878	0	2,542	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		0	0	0	0
Equipment Finance Commercial Financing Receivable | Commercial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment		46,916		46,916		11,193
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		52,908		52,908		11,894
Impaired Financing Receivable, Related Allowance		12,715		12,715		8,032
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		0		0		40,216
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		11,709		11,709		44,194
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	[1]	42,913	9,654	41,587	6,905
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		0	0	0	0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	[1]	0	43,406	0	29,088
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0	0	0
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		7,964		7,964		7,256
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		7,964		7,964		7,256
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	[1]	7,870	7,193	7,106	7,021
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		57	62	169	176
Residential Real Estate Construction Financing Receivable | Real Estate Construction and Land
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment		736		736		747
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		736		736		747
Impaired Financing Receivable, Related Allowance		11		11		26
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	[1]	736	751	736	751
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		4	4	11	12
Commercial real estate | Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment		67,821		67,821		17,967
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		68,852		68,852		19,219
Impaired Financing Receivable, Related Allowance		7,055		7,055		777
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		59,090		59,090		58,678
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		68,390		68,390		68,333
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	[1]	18,580	13,230	18,220	13,155
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		262	152	781	449
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	[1]	59,090	36,534	54,747	33,263
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		518	243	1,209	674
Residential Real Estate | Real Estate Mortgage
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment		2,517		2,517		2,278
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		2,573		2,573		2,435
Impaired Financing Receivable, Related Allowance		244		244		681
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		10,060		10,060		5,487
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		15,309		15,309		$ 11,406
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	[1]	2,505	2,478	2,325	2,334
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		15	9	42	24
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	[1]	9,573	6,061	6,990	5,046
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		$ 70	$ 14	$ 130	$ 26
[1]	For Non-PCI loans and leases reported as impaired at September 30, 2016 and 2015, amounts were calculated based on the period of time such loans and leases were impaired during the reported period.

Loans and Leases (Details 6)

Loans and Leases (Details 6)		3 Months Ended				9 Months Ended
		Sep. 30, 2016USD ($)Contract		Sep. 30, 2015USD ($)Contract		Sep. 30, 2016USD ($)Contract		Sep. 30, 2015USD ($)Contract
Financing Receivable, Modifications [Line Items]
Number of loans | Contract		9		19		43		76
Pre-Modification Outstanding Recorded Investment		$ 42,468,000		$ 12,709,000		$ 89,423,000		$ 89,883,000
Post-Modification Outstanding Recorded Investment		$ 42,468,000		$ 12,709,000		$ 87,091,000		$ 89,489,000
Number of Loans | Contract		2		3		3		5
Recorded Investment		$ 1,247,000	[1],[2]	$ 2,037,000	[2],[3]	$ 41,159,000	[4],[5]	$ 3,240,000	[5],[6]
Charge-offs		$ 0		$ 0		$ 0		$ 0
Real Estate Mortgage | Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of loans | Contract		2		3		7		15
Pre-Modification Outstanding Recorded Investment		$ 1,147,000		$ 574,000		$ 5,287,000		$ 7,080,000
Post-Modification Outstanding Recorded Investment		$ 1,147,000		$ 574,000		$ 5,287,000		$ 7,031,000
Number of Loans | Contract		0		1		0		2
Recorded Investment		$ 0	[2]	$ 1,761,000	[2]	$ 0	[5]	$ 2,710,000	[5]
Real Estate Mortgage | Residential Real Estate
Financing Receivable, Modifications [Line Items]
Number of loans | Contract		1		2		7		14
Pre-Modification Outstanding Recorded Investment		$ 93,000		$ 382,000		$ 5,136,000		$ 2,426,000
Post-Modification Outstanding Recorded Investment		$ 93,000		$ 382,000		$ 5,136,000		$ 2,260,000
Number of Loans | Contract		0		2		0		3
Recorded Investment		$ 0	[2]	$ 276,000	[2]	$ 0	[5]	$ 530,000	[5]
Real Estate Construction and Land | Commercial Real Estate Construction Loan Receivable
Financing Receivable, Modifications [Line Items]
Number of loans | Contract		1		3		1		6
Pre-Modification Outstanding Recorded Investment		$ 1,245,000		$ 7,333,000		$ 1,245,000		$ 16,947,000
Post-Modification Outstanding Recorded Investment		$ 1,245,000		$ 7,333,000		$ 1,245,000		$ 16,947,000
Commercial | Cash Flow
Financing Receivable, Modifications [Line Items]
Number of loans | Contract		2		9		12		17
Pre-Modification Outstanding Recorded Investment		$ 25,000		$ 883,000		$ 30,582,000		$ 1,756,000
Post-Modification Outstanding Recorded Investment		$ 25,000		$ 883,000		$ 30,582,000		$ 1,577,000
Commercial | Asset Based
Financing Receivable, Modifications [Line Items]
Number of loans | Contract		1		1		5		13
Pre-Modification Outstanding Recorded Investment		$ 25,000		$ 3,431,000		$ 2,158,000		$ 8,139,000
Post-Modification Outstanding Recorded Investment		$ 25,000		$ 3,431,000		$ 2,158,000		$ 8,139,000
Number of Loans | Contract		1		0		1		0
Recorded Investment		$ 2,000	[2]	$ 0	[2]	$ 2,000	[5]	$ 0	[5]
Commercial | Equipment Finance Commercial Financing Receivable
Financing Receivable, Modifications [Line Items]
Number of loans | Contract		1		0		7		9
Pre-Modification Outstanding Recorded Investment		$ 39,912,000		$ 0		$ 44,196,000		$ 53,338,000
Post-Modification Outstanding Recorded Investment		$ 39,912,000		$ 0		$ 42,572,000		$ 53,338,000
Number of Loans | Contract						1		0
Recorded Investment	[5]					$ 39,912,000	[7]	$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of loans | Contract		1		1		4		2
Pre-Modification Outstanding Recorded Investment		$ 21,000		$ 106,000		$ 819,000		$ 197,000
Post-Modification Outstanding Recorded Investment		$ 21,000		$ 106,000		$ 111,000		$ 197,000
Commercial Real Estate Construction Loan Receivable | Real Estate Construction and Land
Financing Receivable, Modifications [Line Items]
Number of Loans | Contract		1		0		1		0
Recorded Investment		$ 1,245,000	[2]	$ 0	[2]	$ 1,245,000	[5]	$ 0	[5]
[1]	Represents the balance at September 30, 2016, and there were no charge-offs.
[2]	The population of defaulted restructured loans for the period indicated includes only those loans restructured during the preceding 12-month period. The table excludes defaulted troubled restructurings in those classes for which the recorded investment was zero at the end of the period.
[3]	Represents the balance at September 30, 2015, and there were no charge-offs.
[4]	Represents the balance at September 30, 2016, and there were no charge-offs.
[5]	The population of defaulted restructured loans for the period indicated includes only those loans restructured during the preceding 12-month period. The table excludes defaulted troubled restructurings in those classes for which the recorded investment was zero at the end of the period.
[6]	Represents the balance at September 30, 2015, and there were no
[7]	The term of the modification for this loan expired in the second quarter of 2016 and was not renewed until the third quarter of 2016. Thus, the loan was in payment default under the loan's original terms at June 30, 2016.

Loans and Leases (Details 7

Loans and Leases (Details 7 - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period			$ 115,111
Balance, end of period	$ 147,976		147,976
The ending balance of the loan and lease portfolio is composed of loans and leases:
Ending balance of loans and leases	14,742,846		14,742,846		$ 14,478,254
Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	132,000	$ 85,047	105,534	$ 70,456
Charge-offs	(9,924)	(4,312)	(17,009)	(14,846)
Recoveries	6,050	1,081	8,811	5,602
Provision	8,621	10,500	39,411	31,104
Balance, end of period	136,747	92,316	136,747	92,316
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	31,120	11,975	31,120	11,975
Collectively evaluated for impairment	105,627	80,341	105,627	80,341
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	240,772	146,068	240,772	146,068
Collectively evaluated for impairment	14,381,875	12,112,848	14,381,875	12,112,848
Ending balance of loans and leases	14,622,647	12,258,916	14,622,647	12,258,916	14,289,209
Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period			9,577
Balance, beginning of period	11,289	14,328	9,577	13,999
Charge-offs	531	(1,119)	(862)	(1,698)
Recoveries	0	0	0	112
Provision	471	(2,254)	2,514	(1,458)
Balance, end of period	11,229		11,229
Balance, end of period	11,229	10,955	11,229	10,955
Amount of the allowance applicable to loans and leases:
Acquired loans with deteriorated credit quality	11,229	10,955	11,229	10,955
The ending balance of the loan and lease portfolio is composed of loans and leases:
Acquired loans with deteriorated credit quality	120,199	193,289	120,199	193,289
Ending balance of loans and leases	120,199	193,289	120,199	193,289	189,045
NonPCI and PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	143,289	99,375	115,111	84,455
Charge-offs	(10,455)	(5,431)	(17,871)	(16,544)
Recoveries	6,050	1,081	8,811	5,714
Provision	9,092	8,246	41,925	29,646
Balance, end of period	147,976	103,271	147,976	103,271
The ending balance of the loan and lease portfolio is composed of loans and leases:
Total loans and leases	14,742,846	12,452,205	14,742,846	12,452,205
Real Estate Mortgage | Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	29,331	29,908	36,654	25,097
Charge-offs	(302)	(252)	(1,905)	(1,767)
Recoveries	2,414	288	4,352	1,783
Provision	5,498	4,355	(2,160)	9,186
Balance, end of period	36,941	34,299	36,941	34,299
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	7,299	1,443	7,299	1,443
Collectively evaluated for impairment	29,642	32,856	29,642	32,856
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	139,059	58,393	139,059	58,393
Collectively evaluated for impairment	5,325,882	5,446,694	5,325,882	5,446,694
Ending balance of loans and leases	5,464,941	5,505,087	5,464,941	5,505,087	5,688,063
Real Estate Construction and Land | Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	7,853	3,908	7,137	4,248
Charge-offs	0	0	0	0
Recoveries	27	390	185	1,034
Provision	803	93	1,361	(891)
Balance, end of period	8,683	4,391	8,683	4,391
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	11	31	11	31
Collectively evaluated for impairment	8,672	4,360	8,672	4,360
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	8,700	8,047	8,700	8,047
Collectively evaluated for impairment	822,815	364,433	822,815	364,433
Ending balance of loans and leases	831,515	372,480	831,515	372,480	527,720
Commercial | Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	93,404	50,531	61,082	39,858
Charge-offs	(9,606)	(4,035)	(14,306)	(12,964)
Recoveries	3,553	239	4,179	2,393
Provision	2,240	6,137	38,636	23,585
Balance, end of period	89,591	52,872	89,591	52,872
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	23,631	10,343	23,631	10,343
Collectively evaluated for impairment	65,960	42,529	65,960	42,529
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	92,637	76,088	92,637	76,088
Collectively evaluated for impairment	7,977,050	6,175,440	7,977,050	6,175,440
Ending balance of loans and leases	8,069,687	6,251,528	8,069,687	6,251,528	7,952,577
Consumer | Non Purchased Credit Impaired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,412	700	661	1,253
Charge-offs	(16)	(25)	(798)	(115)
Recoveries	56	164	95	392
Provision	80	(85)	1,574	(776)
Balance, end of period	1,532	754	1,532	754
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	179	158	179	158
Collectively evaluated for impairment	1,353	596	1,353	596
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	376	3,540	376	3,540
Collectively evaluated for impairment	256,128	126,281	256,128	126,281
Ending balance of loans and leases	$ 256,504	$ 129,821	$ 256,504	$ 129,821	$ 120,849

Loans and Leases (Details Textu

Loans and Leases (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Receivables [Abstract]
Nonaccrual Loans/Leases	$ 171,085,000		$ 171,085,000		$ 129,019,000
Receivable, 90 or more days past due	11,900,000		11,900,000		16,800,000
Receivable, 30-89 days past due	13,200,000		13,200,000		3,600,000
Financing receivable, nonaccrual status, current	146,000,000		146,000,000		$ 108,600,000
Charge-offs	$ 0	$ 0	$ 0	$ 0

Foreclosed Assets (Details)

Foreclosed Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Total other real estate owned, net	$ 13,800	$ 15,240
Other foreclosed assets	1,313	6,880
Total foreclosed assets, net	15,113	22,120
Commercial real estate
Total other real estate owned, net	0	487
Construction and land development
Total other real estate owned, net	13,800	13,801
Single family residence
Total other real estate owned, net	$ 0	$ 952

Foreclosed Assets (Details 1)

Foreclosed Assets (Details 1) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Foreclosed Assets Rollforward [Abstract]
Balance, December 31, 2015	$ 22,120
Foreclosures	129	$ 13,472
Reductions related to sales	(7,136)
Balance, September 30, 2016	$ 15,113

Borrowings and Subordinated D51

Borrowings and Subordinated Debentures (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Borrowings	$ 541,011,000	$ 621,914,000
Non‑recourse debt
Debt Instrument [Line Items]
Amount	$ 1,011,000	$ 3,914,000
Rate	6.31%	5.49%
American Financial Exchange overnight borrowing
Debt Instrument [Line Items]
Amount	$ 40,000,000	$ 0
Rate	0.55%	0.00%
Federal Home Loan Bank Advances | FHLB secured advances
Debt Instrument [Line Items]
Amount	$ 410,000,000
Amount		$ 618,000,000
Rate	0.37%	0.27%
Federal Home Loan Bank Advances | FHLB unsecured overnight advance
Debt Instrument [Line Items]
Amount	$ 90,000,000
Amount		$ 0
Rate	0.35%	0.00%

Borrowings and Subordinated D52

Borrowings and Subordinated Debentures (Details 1) $ in Thousands, € in Millions		9 Months Ended
		Sep. 30, 2016USD ($)	Sep. 30, 2016EUR (€)	Dec. 31, 2015USD ($)
Subordinated Borrowing [Line Items]
Amount		$ 540,728		$ 539,795
Unamortized discount	[1]	(99,616)		(103,795)
Net subordinated debentures		441,112		436,000
Subordinated Debt Trust V Due September 2033
Subordinated Borrowing [Line Items]
Amount		$ 10,310		$ 10,310
Rate		3.96%	3.96%	3.63%
Date Issued		Aug. 15, 2003
Maturity Date		Sep. 17, 2033
Description of variable rate basis		3 month LIBOR + 3.10
Subordinated Debt Trust VI Due September 2033
Subordinated Borrowing [Line Items]
Amount		$ 10,310		$ 10,310
Rate		3.90%	3.90%	3.39%
Date Issued		Sep. 3, 2003
Maturity Date		Sep. 15, 2033
Description of variable rate basis		3 month LIBOR + 3.05
Subordinated Debt Trust CII Due September 2033
Subordinated Borrowing [Line Items]
Amount		$ 5,155		$ 5,155
Rate		3.81%	3.81%	3.35%
Date Issued		Sep. 17, 2003
Maturity Date		Sep. 17, 2033
Description of variable rate basis		3 month LIBOR + 2.95
Subordinated Debt Trust VII Due April 2034
Subordinated Borrowing [Line Items]
Amount		$ 61,856		$ 61,856
Rate		3.51%	3.51%	3.07%
Date Issued		Feb. 5, 2004
Maturity Date		Apr. 23, 2034
Description of variable rate basis		3 month LIBOR + 2.75
Subordinated Debt Trust CIII Due September 2035
Subordinated Borrowing [Line Items]
Amount		$ 20,619		$ 20,619
Rate		2.54%	2.54%	2.20%
Date Issued		Aug. 15, 2005
Maturity Date		Sep. 15, 2035
Description of variable rate basis		3 month LIBOR + 1.69
Subordinated Debt Trust FCCI Due March 2037
Subordinated Borrowing [Line Items]
Amount		$ 16,495		$ 16,495
Rate		2.45%	2.45%	2.11%
Date Issued		Jan. 25, 2007
Maturity Date		Mar. 15, 2037
Description of variable rate basis		3 month LIBOR + 1.60
Subordinated Debt Trust FCBI Due December 2035
Subordinated Borrowing [Line Items]
Amount		$ 10,310		$ 10,310
Rate		2.40%	2.40%	2.06%
Date Issued		Sep. 30, 2005
Maturity Date		Dec. 15, 2035
Description of variable rate basis		3 month LIBOR + 1.55
Trust Preferred Securities Two Thousand Five Series One
Subordinated Borrowing [Line Items]
Amount		$ 82,475		$ 82,475
Rate		2.80%	2.80%	2.46%
Date Issued		Nov. 21, 2005
Maturity Date		Dec. 15, 2035
Description of variable rate basis		3 month LIBOR + 1.95
Trust Preferred Securities Two Thousand Five Series Two
Subordinated Borrowing [Line Items]
Amount		$ 128,866		$ 128,866
Rate		2.71%	2.71%	2.27%
Date Issued		Dec. 14, 2005
Maturity Date		Jan. 30, 2036
Description of variable rate basis		3 month LIBOR + 1.95
Two Thousand Six One Term Debt Securitization
Subordinated Borrowing [Line Items]
Amount		$ 51,545		$ 51,545
Rate		2.71%	2.71%	2.27%
Date Issued		Feb. 22, 2006
Maturity Date		Apr. 30, 2036
Description of variable rate basis		3 month LIBOR + 1.95
Two Thousand Six Two Term Debt Securitization
Subordinated Borrowing [Line Items]
Amount		$ 51,550		$ 51,550
Rate		2.71%	2.71%	2.27%
Date Issued		Sep. 27, 2006
Maturity Date		Oct. 30, 2036
Description of variable rate basis		3 month LIBOR + 1.95
Trust Preferred Securities Two Thousand Six Series Three
Subordinated Borrowing [Line Items]
Amount	[2]	$ 28,940		$ 28,007
Rate		1.75%	1.75%	1.98%
Date Issued		Sep. 29, 2006
Maturity Date		Oct. 30, 2036
Denomination value | €			€ 25.8
Description of variable rate basis		3 month EURIBOR + 2.05
Trust Preferred Securities Two Thousand Six Series Four
Subordinated Borrowing [Line Items]
Amount		$ 16,470		$ 16,470
Rate		2.71%	2.71%	2.27%
Date Issued		Dec. 5, 2006
Maturity Date		Jan. 30, 2037
Description of variable rate basis		3 month LIBOR + 1.95
Trust Preferred Securities Two Thousand Six Series Five
Subordinated Borrowing [Line Items]
Amount		$ 6,650		$ 6,650
Rate		2.71%	2.71%	2.27%
Date Issued		Dec. 19, 2006
Maturity Date		Jan. 30, 2037
Description of variable rate basis		3 month LIBOR + 1.95
Two Thousand Seven One Term Debt Securitization
Subordinated Borrowing [Line Items]
Amount		$ 39,177		$ 39,177
Rate		2.71%	2.71%	2.27%
Date Issued		Jun. 13, 2007
Maturity Date		Jul. 30, 2037
Description of variable rate basis		3 month LIBOR + 1.95
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust V Due September 2033
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		3.96%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust VI Due September 2033
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		3.90%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust CII Due September 2033
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		3.81%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust VII Due April 2034
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		3.51%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust CIII Due September 2035
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		2.54%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust FCCI Due March 2037
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		2.45%
London Interbank Offered Rate (LIBOR) | Subordinated Debt Trust FCBI Due December 2035
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		2.40%
London Interbank Offered Rate (LIBOR) | Trust Preferred Securities Two Thousand Five Series One
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		2.80%
London Interbank Offered Rate (LIBOR) | Trust Preferred Securities Two Thousand Five Series Two
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		2.71%
London Interbank Offered Rate (LIBOR) | Two Thousand Six One Term Debt Securitization
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		2.71%
London Interbank Offered Rate (LIBOR) | Two Thousand Six Two Term Debt Securitization
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		2.71%
London Interbank Offered Rate (LIBOR) | Trust Preferred Securities Two Thousand Six Series Four
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		2.71%
London Interbank Offered Rate (LIBOR) | Trust Preferred Securities Two Thousand Six Series Five
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		2.71%
London Interbank Offered Rate (LIBOR) | Two Thousand Seven One Term Debt Securitization
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		2.71%
Euribor Future | Trust Preferred Securities Two Thousand Six Series Three
Subordinated Borrowing [Line Items]
Rate Index (Quarterly Reset)		1.75%
[1]	Amount represents the fair value adjustment on subordinated debentures assumed in acquisitions.
[2]	Denomination is in Euros with a value of €25.8 million.

Borrowings and Subordinated D53

Borrowings and Subordinated Debentures (Details Textual) - USD ($)	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Non‑recourse debt
Debt Instrument [Line Items]
Weighted average remaining maturity period	2 years
FHLB unsecured overnight advance
Debt Instrument [Line Items]
Current borrowing capacity	$ 80,000,000
Unused commitment fees	0
Unused lines of Credit
Debt Instrument [Line Items]
Amount outstanding	0	$ 0
American Financial Exchange overnight borrowing
Debt Instrument [Line Items]
Amount outstanding	40,000,000	0
Federal Home Loan Bank of San Francisco | FHLB unsecured overnight advance
Debt Instrument [Line Items]
Borrowing capacity description	99,000,000
Amount outstanding	90,000,000	0
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Borrowing capacity description	2,429,729,000
Amount outstanding	0	0
Loans pledged as collateral	3,300,000,000
Federal Home Loan Bank Advances | FHLB secured advances
Debt Instrument [Line Items]
Borrowing capacity description	2,044,799,000
Current outstanding	410,000,000
Amount outstanding		618,000,000
Federal Home Loan Bank Advances | Maturity Overnight
Debt Instrument [Line Items]
Current outstanding	210,000,000	618,000,000
Federal Home Loan Bank Advances | Maturity 30 to 90 Days
Debt Instrument [Line Items]
Current outstanding	200,000,000
Federal Home Loan Bank Advances | FHLB unsecured overnight advance
Debt Instrument [Line Items]
Current outstanding	$ 90,000,000
Amount outstanding		$ 0

Commitments and Contingencies54

Commitments and Contingencies (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Loan commitments to extend credit	$ 4,156,147	$ 3,580,655
Standby letters of credit	204,616	210,292
Commitments to purchase equipment being acquired for lease to others	0	6,663
Total	$ 4,360,763	$ 3,797,610

Commitments and Contingencies55

Commitments and Contingencies (Details Textual) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Long-term Purchase Commitment [Line Items]
Commitment to contribute capital	$ 25.6	$ 19.2
Student Loan
Long-term Purchase Commitment [Line Items]
Loans and leases receivable commitments	105
Private Equity Funds
Long-term Purchase Commitment [Line Items]
Remaining minimum amount committed	$ 3	$ 2.8

Fair Value Measurements (Detail

Fair Value Measurements (Details 1) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Securities available‑for‑sale	$ 3,341,335	$ 3,559,437
Equity warrants		4,914
Level 1
Securities available‑for‑sale		71,942
Level 2
Securities available‑for‑sale		3,388,054
Level 3
Securities available‑for‑sale		99,441
Equity warrants	5,108
Government agency and government-sponsored enterprise pass through securities
Securities available‑for‑sale	528,941	667,840
Government agency and government-sponsored enterprise collateralized mortgage obligations
Securities available‑for‑sale	157,231	194,755
Municipal securities
Securities available‑for‑sale	1,522,494	1,547,331
Government agency and government-sponsored enterprise commercial mortgage-backed securities
Securities available‑for‑sale	531,273	391,441
Corporate debt securities
Securities available‑for‑sale	49,011	48,424
Collateralized loan obligations
Securities available‑for‑sale	156,647	132,189
SBA securities
Securities available‑for‑sale	187,300	211,157
US Treasury securities
Securities available‑for‑sale	0	69,380
US Government-sponsored Enterprises Debt Securities
Securities available‑for‑sale	0	36,913
Asset-backed and other securities
Securities available‑for‑sale	69,813	115,211
Fair Value, Measurements, Recurring
Securities available‑for‑sale	3,341,335
Derivative assets	1,261	11,919
Total recurring assets	3,347,704	3,576,270
Derivative liabilities	1,829	1,397
Fair Value, Measurements, Recurring | Level 1
Securities available‑for‑sale	2,177	71,942
Derivative assets	0	0
Equity warrants	0	0
Total recurring assets	2,177	71,942
Derivative liabilities	0	0
Fair Value, Measurements, Recurring | Level 2
Securities available‑for‑sale	3,261,313	3,388,054
Derivative assets	1,261	11,919
Equity warrants	0	0
Total recurring assets	3,262,574	3,399,973
Derivative liabilities	1,829	1,397
Fair Value, Measurements, Recurring | Level 3
Securities available‑for‑sale	77,845	99,441
Derivative assets	0	0
Equity warrants	5,108	4,914
Total recurring assets	82,953	104,355
Derivative liabilities	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise pass through securities | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise pass through securities | Level 2
Securities available‑for‑sale	528,941	667,840
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise pass through securities | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations | Level 2
Securities available‑for‑sale	157,231	194,755
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise collateralized mortgage obligations | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Private Label Collateralized Mortgage Obligations | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Private Label Collateralized Mortgage Obligations | Level 2
Securities available‑for‑sale	75,804	63,555
Fair Value, Measurements, Recurring | Private Label Collateralized Mortgage Obligations | Level 3
Securities available‑for‑sale	62,821	81,241
Fair Value, Measurements, Recurring | Municipal securities | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Municipal securities | Level 2
Securities available‑for‑sale	1,522,494	1,547,331
Fair Value, Measurements, Recurring | Municipal securities | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise commercial mortgage-backed securities | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise commercial mortgage-backed securities | Level 2
Securities available‑for‑sale	531,273	391,441
Fair Value, Measurements, Recurring | Government agency and government-sponsored enterprise commercial mortgage-backed securities | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Corporate debt securities | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Corporate debt securities | Level 2
Securities available‑for‑sale	49,011	48,424
Fair Value, Measurements, Recurring | Corporate debt securities | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Collateralized loan obligations | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | Collateralized loan obligations | Level 2
Securities available‑for‑sale	156,647	132,189
Fair Value, Measurements, Recurring | Collateralized loan obligations | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | SBA securities | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | SBA securities | Level 2
Securities available‑for‑sale	187,300	211,157
Fair Value, Measurements, Recurring | SBA securities | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring | US Treasury securities | Level 1
Securities available‑for‑sale		69,380
Fair Value, Measurements, Recurring | US Treasury securities | Level 2
Securities available‑for‑sale		0
Fair Value, Measurements, Recurring | US Treasury securities | Level 3
Securities available‑for‑sale		0
Fair Value, Measurements, Recurring | US Government-sponsored Enterprises Debt Securities | Level 1
Securities available‑for‑sale		0
Fair Value, Measurements, Recurring | US Government-sponsored Enterprises Debt Securities | Level 2
Securities available‑for‑sale		36,913
Fair Value, Measurements, Recurring | US Government-sponsored Enterprises Debt Securities | Level 3
Securities available‑for‑sale		0
Fair Value, Measurements, Recurring | Asset-backed and other securities | Level 1
Securities available‑for‑sale	2,177	2,562
Fair Value, Measurements, Recurring | Asset-backed and other securities | Level 2
Securities available‑for‑sale	52,612	94,449
Fair Value, Measurements, Recurring | Asset-backed and other securities | Level 3
Securities available‑for‑sale	$ 15,024	$ 18,200

Fair Value Measurements (Deta57

Fair Value Measurements (Details 2) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Level 3 CMO Roll Forward [Abstract]
Equity warrants		$ 4,914
Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrants, Acquired From Acquisition	$ 4,914
Level 3 CMO Roll Forward [Abstract]
Gain on Sale of Investments	301
Proceeds from Issuance of Warrants	(1,597)
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants	1,490
Transfers to Available-For-Sale	0
Equity warrants	5,108
Level 3 | Fair Value, Measurements, Recurring
Level 3 CMO Roll Forward [Abstract]
Equity warrants	5,108	$ 4,914
Level 3 | Private Label CMOs | Fair Value, Measurements, Recurring
Level 3 CMO Roll Forward [Abstract]
Balance, December 31, 2015	81,241
Total included in earnings	1,252
Total included in other comprehensive income	(1,399)
Net settlements	(18,273)
Balance, September 30, 2016	62,821
Level 3 | Asset-backed and other securities | Fair Value, Measurements, Recurring
Level 3 CMO Roll Forward [Abstract]
Balance, December 31, 2015	18,200
Total included in earnings	47
Total included in other comprehensive income	(5)
Net settlements	(3,218)
Balance, September 30, 2016	$ 15,024
Level 3 | Minimum | Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring
Unobservable Inputs Quantitative Information [Abstract]
Voluntary annual prepayment speeds	0.00%
Annual default rates	0.00%
Loss severity rates	0.00%
Discount rates	0.90%
Level 3 | Minimum | SBA securities | Fair Value, Measurements, Recurring
Unobservable Inputs Quantitative Information [Abstract]
Voluntary annual prepayment speeds	5.00%
Annual default rates	1.00%
Loss severity rates	10.00%
Discount rates	2.10%
Level 3 | Maximum | Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring
Unobservable Inputs Quantitative Information [Abstract]
Voluntary annual prepayment speeds	27.60%
Annual default rates	15.00%
Loss severity rates	94.50%
Discount rates	15.00%
Level 3 | Maximum | SBA securities | Fair Value, Measurements, Recurring
Unobservable Inputs Quantitative Information [Abstract]
Voluntary annual prepayment speeds	40.00%
Annual default rates	8.00%
Loss severity rates	91.00%
Discount rates	7.20%
Level 3 | Weighted Average | Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring
Unobservable Inputs Quantitative Information [Abstract]
Voluntary annual prepayment speeds	11.50%
Annual default rates	2.10%
Loss severity rates	33.10%
Discount rates	3.60%
Level 3 | Weighted Average | SBA securities | Fair Value, Measurements, Recurring
Unobservable Inputs Quantitative Information [Abstract]
Voluntary annual prepayment speeds	14.70%
Annual default rates	3.70%
Loss severity rates	54.30%
Discount rates	2.90%
Warrant | Level 3
Weighted Average Input
Volatility	19.30%
Warrant | Level 3 | Weighted Average
Weighted Average Input
Risk-free interest rate	1.00%
Remaining life assumption (in years)	3 years 9 months 20 days

Fair Value Measurements (Deta58

Fair Value Measurements (Details 3) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		$ 55,025
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		23,468
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 130,332	31,557
Non Purchased Credit Impaired Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	131,149	40,817
Non Purchased Credit Impaired Loans and Leases | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Non Purchased Credit Impaired Loans and Leases | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		9,367
Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 130,332	31,450
Other real estate and foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		14,101
Other real estate and foreclosed assets | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Other real estate and foreclosed assets | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		14,101
Cost-method Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		107
Cost-method Investments | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Cost-method Investments | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Cost-method Investments | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		107
Third party appraisals | Other real estate and foreclosed assets | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		$ 0

Fair Value Measurements (Deta59

Fair Value Measurements (Details 4) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Net Gain (Loss) from Nonrecurring Assets	$ 12,935	$ 5,631	$ 27,301	$ 12,505
Non Purchased Credit Impaired Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Net Gain (Loss) from Nonrecurring Assets	12,935	873	27,301	7,623
Other real estate and foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Net Gain (Loss) from Nonrecurring Assets	$ 0	$ 4,758	$ 0	$ 4,882

Fair Value Measurements (Deta60

Fair Value Measurements (Details 5) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		$ 55,025
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 130,332	31,557
Non Purchased Credit Impaired Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	131,149	40,817
Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 130,332	31,450
Cost-method Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		107
Cost-method Investments | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		$ 107
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	0.00%
Minimum | Third party appraisals | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	9.00%
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	8.00%
Maximum | Third party appraisals | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	22.00%
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	6.12%
Weighted Average | Third party appraisals | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	12.20%
Discount Rates | 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]
Assets, Fair Value Disclosure, Nonrecurring	$ 45,571
Discounts | Third party appraisals | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	73,775
No Discounts | Third party appraisals | Non Purchased Credit Impaired Loans and Leases | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 10,986

Fair Value Measurements (Deta61

Fair Value Measurements (Details 6) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	$ 286,371	$ 161,020
Interest-earning deposits in financial institutions	253,994	235,466
Securities available-for-sale, at fair value	3,341,335	3,559,437
Available-for-sale Securities	3,341,335	3,559,437
Federal Home Loan Bank stock, at cost	19,386	19,710
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	19,386	19,710
Cost Method Investments	1,700	2,267
Cost Method Investments, Fair Value Disclosure	4,408	6,789
Loans and leases, net	14,594,870	14,363,143
Loans Receivable, Fair Value Disclosure	14,707,667
Derivative Asset	1,261	11,919
Deposits, Savings Deposits	13,092,753	11,513,826
Time Deposits	2,552,915	4,152,356
Deposits, Fair Value Disclosure	2,549,662	4,152,920
Borrowings	541,011	621,914
Borrowed Funds		621,914
Long-term Debt, Fair Value	541,067	622,438
Subordinated debentures	441,112	436,000
Subordinated Debt Obligations, Fair Value Disclosure	424,874	419,762
Derivative Liability		1,397
Equity warrants		4,914
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	286,371	161,020
Interest-earning deposits in financial institutions	253,994	235,466
Available-for-sale Securities		71,942
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	0	0
Cost Method Investments, Fair Value Disclosure	0	0
Deposits, Savings Deposits	0	0
Deposits, Fair Value Disclosure	0	0
Long-term Debt, Fair Value	340,000	618,000
Subordinated Debt Obligations, Fair Value Disclosure	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
Available-for-sale Securities		3,388,054
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	19,386	19,710
Cost Method Investments, Fair Value Disclosure	0	0
Deposits, Savings Deposits	13,092,753	11,513,826
Deposits, Fair Value Disclosure	2,549,662	4,152,920
Long-term Debt, Fair Value	201,067	4,438
Subordinated Debt Obligations, Fair Value Disclosure	424,874	419,762
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
Available-for-sale Securities		99,441
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	0	0
Cost Method Investments, Fair Value Disclosure	4,408	6,789
Loans Receivable, Fair Value Disclosure	14,706,850
Deposits, Savings Deposits	0	0
Deposits, Fair Value Disclosure	0	0
Long-term Debt, Fair Value	0	0
Subordinated Debt Obligations, Fair Value Disclosure	0	0
Equity warrants	5,108
Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities	3,341,335
Derivative assets	1,261	11,919
Derivative liabilities	1,829	1,397
Fair Value, Measurements, Recurring | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities	2,177	71,942
Derivative assets	0	0
Derivative liabilities	0	0
Equity warrants	0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities	3,261,313	3,388,054
Derivative assets	1,261	11,919
Derivative liabilities	1,829	1,397
Equity warrants	0	0
Fair Value, Measurements, Recurring | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities	77,845	99,441
Derivative assets	0	0
Derivative liabilities	0	0
Equity warrants	5,108	4,914
Fair Value, Measurements, Nonrecurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		55,025
Fair Value, Measurements, Nonrecurring | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Fair Value, Measurements, Nonrecurring | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		23,468
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	130,332	31,557
Non Purchased Credit Impaired Loans and Leases | Fair Value, Measurements, Nonrecurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	131,149	40,817
Non Purchased Credit Impaired Loans and Leases | Fair Value, Measurements, Nonrecurring | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	0
Assets, Fair Value Disclosure, Nonrecurring		0
Non Purchased Credit Impaired Loans and Leases | Fair Value, Measurements, Nonrecurring | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	817
Assets, Fair Value Disclosure, Nonrecurring		9,367
Non Purchased Credit Impaired Loans and Leases | Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 130,332	31,450
NonPCI and PCI Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and leases, net		14,363,143
Loans Receivable, Fair Value Disclosure		14,393,558
NonPCI and PCI Loans | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure		0
NonPCI and PCI Loans | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure		9,367
NonPCI and PCI Loans | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure		$ 14,384,191

Fair Value Measurements (Deta62

Fair Value Measurements (Details Textual)	Sep. 30, 2016USD ($)
Fair Value Disclosures [Abstract]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	$ 0

Earnings Per Share (Details 1)

Earnings Per Share (Details 1) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Net earnings from continuing operations		$ 93,895	$ 82,168	$ 69,616	$ 266,519	$ 227,778
Less: Earnings allocated to unvested restricted stock	[1]	(1,048)	(863)	(649)	(2,983)	(2,213)
Net earnings allocated to common shares		$ 92,847	$ 81,305	$ 68,967	$ 263,536	$ 225,565
Weighted-average basic shares and unvested restricted stock outstanding (shares)		121,818	121,799	103,048	121,739	103,038
Weighted-average unvested restricted stock outstanding (shares)		(1,401)	(1,481)	(985)	(1,425)	(1,055)
Weighted-average basic shares outstanding (shares)		120,417	120,318	102,063	120,314	101,983
Basic net income per share (usd per share)		$ 0.77	$ 0.68	$ 0.68	$ 2.19	$ 2.21
Net earnings from continuing operations allocated to common shares		$ 92,847	$ 81,305	$ 68,967	$ 263,536	$ 225,565
Diluted net income per share (usd per share)		$ 0.77	$ 0.68	$ 0.68	$ 2.19	$ 2.21
[1]	Represents cash dividends paid to holders of unvested restricted stock, net of estimated forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.

Stock Based Compensation (Detai

Stock Based Compensation (Details 1) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted shares (shares)	1,393,373			1,393,373		1,211,951
Vesting period of time-based restricted stock, lower limit	3 years
Vesting period of time-based restricted stock, higher limit	4 years
Restricted Stock | Vesting Based On Service
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 5.6	$ 3.8	$ 6	$ 16.6	$ 11.2
Restricted Stock Awards And Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share based compensation expense	$ 45.7			$ 45.7
Time-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted shares (shares)	1,397,715			1,397,715
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted shares (shares)	153,715			153,715
PacWest 2003 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (shares)	19,686,565			19,686,565
Number of shares available for grant (shares)	12,450,068			12,450,068

Subsequent Events (Details Text

Subsequent Events (Details Textuals) - USD ($)	Nov. 01, 2016	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Subsequent Event [Line Items]
Authorized amount of repurchase		$ 400,000,000			$ 400,000,000
Dividends declared per share (usd per share)		$ 0.50	$ 0.50	$ 0.5	$ 1.50	$ 1.5
Subsequent event description					0
Dividend Declared | Subsequent Event
Subsequent Event [Line Items]
Dividends declared per share (usd per share)	$ 0.5