Pacwest Bancorp (PACW) 10-Q 8 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 29, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	PACWEST BANCORP
Entity Central Index Key	1102112
Document Period End Date	31-Mar-15
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Current Fiscal Year End Date	-19
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	FALSE
Entity Common Stock, Shares Outstanding		101,855,519
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Assets [Abstract]
Cash and due from banks	$140,873		$164,757
Interest-earning deposits in financial institutions	250,981		148,469
Total cash and cash equivalents	391,854		313,226
Securities available-for-sale, at fair value	1,595,409		1,567,177
Federal Home Loan Bank stock, at cost	28,905		40,609
Total investment securities	1,624,314		1,607,786
Gross loans and leases	12,302,292		11,904,684
Deferred fees and costs	-30,126		-22,252
Allowance for loan and lease losses	-92,378		-84,455
Total loans and leases, net	12,179,788		11,797,977
Equipment leased to others under operating leases	119,959		122,506
Premises and equipment, net	36,022		36,551
Foreclosed assets, net	35,940		43,721
Goodwill	1,728,380	[1]	1,720,479
Core deposit and customer relationship intangibles, net	15,703		17,204
Deferred tax asset, net	236,065		284,411
Other assets	275,915		290,744
Total assets	16,643,940		16,234,605
Liabilities and Equity [Abstract]
Noninterest-bearing deposits	3,029,463		2,931,352
Interest-bearing deposits	8,904,712		8,823,776
Total deposits	11,934,175		11,755,128
Borrowings	618,156		383,402
Subordinated debentures	431,448		433,583
Accrued interest payable and other liabilities	126,800		156,262
Total liabilities	13,110,579		12,728,375
Commitments and Contingencies	0		0
Preferred stock ($0.01 par value; 5,000,000 shares authorized; none issued and outstanding)	0		0
Common stock ($0.01 par value, 200,000,000 shares authorized at March 31, 2015 and December 31, 2014; 104,241,437 and 104,219,197 shares issued, respectively, including 1,129,445 and 1,108,505 shares of unvested restricted stock, respectively)	1,042		1,042
Additional paid-in capital	3,758,855		3,807,167
Accumulated deficit	-212,633		-285,712
Treasury stock, at cost (1,197,180 shares at March 31, 2015 and December 31, 2014)	-42,647		-42,647
Accumulated other comprehensive income, net	28,744		26,380
Total stockholders' equity	3,533,361		3,506,230
Total liabilities and stockholders' equity	16,643,940		16,234,605
Purchased Credit Impaired Loans and Leases [Member]
Assets [Abstract]
Deferred fees and costs	($61)		($61)
[1]	The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Preferred Stock, Shares Authorized	$0	$0.01
Preferred Stock, Value, Outstanding	0	5,000,000
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	200,000,000	200,000,000
Common Stock, Shares, Issued	104,241,437	104,219,197
Unvested restricted shares	1,129,445	1,108,505
Treasury Stock, Shares	1,197,180	1,197,180

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Interest income:
Loans and leases	$202,097	$197,472	$77,463
Investment securities	12,195	12,205	10,823
Deposits in financial institutions	22	19	74
Total interest income	214,314	209,696	88,360
Interest expense:
Deposits	10,479	9,972	1,225
Borrowings	235	144	79
Subordinated debentures	4,525	4,597	1,041
Total interest expense	15,239	14,713	2,345
Net interest income	199,075	194,983	86,015
Provision (negative provision) for credit losses	16,434	2,063	-644
Net interest income after provision (negative provision) for credit losses	182,641	192,920	86,659
Non-interest income:
Service charges on deposit accounts	2,574	2,787	3,002
Other commissions and fees	5,396	4,556	1,932
Leased equipment income	5,382	5,382	0
Gain on sale of loans and leases	0	7	106
Gain on securities	3,275	0	4,752
FDIC loss sharing expense, net	-4,399	-4,360	-11,430
Other income	8,643	4,331	6,329
Total noninterest income	20,871	12,703	4,691
Non-interest expense:
Compensation	47,737	45,930	28,627
Occupancy	10,600	10,745	7,595
Data processing	4,308	4,050	2,540
Other professional services	3,221	3,181	1,523
Insurance and assessments	3,025	3,115	1,593
Intangible asset amortization	1,501	1,619	1,364
Leased equipment depreciation	3,103	3,103	0
Foreclosed assets expense (income), net	336	1,938	-1,861
Acquisition, integration and reorganization costs	2,000	7,381	2,200
Other expense	8,529	10,243	6,583
Total noninterest expense	84,360	91,305	50,164
Earnings from continuing operations before taxes	119,152	114,318	41,186
Income tax expense	-46,073	-43,261	-15,281
Net earnings from continuing operations	73,079	71,057	25,905
Loss from discontinued operations before taxes	0	-105	-1,413
Income tax benefit	0	47	588
Net loss from discontinued operations	0	-58	-825
Net earnings	$73,079	$70,999	$25,080
Earnings Per Share, Basic [Abstract]
Net earnings from continuing operations	$0.71	$0.69	$0.57
Net earnings	$0.71	$0.69	$0.55
Earnings Per Share, Diluted [Abstract]
Net earnings from continuing operations	$0.71	$0.69	$0.57
Net earnings	$0.71	$0.69	$0.55
Dividends [Abstract]
Dividends declared per share	$0.50	$0.50	$0.25

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Net earnings	$73,079	$70,999	$25,080
Unrealized holding gains on securities available-for-sale	7,363	9,523	22,291
Income tax expense related to unrealized holding gains arising during the period	-3,105	-3,964	-9,363
Unrealized holding gains on securities available-for-sale, net of tax	4,258	5,559	12,928
Reclassification adjustment for gains included in net earnings (1)	-3,275	0	-4,752
Income tax expense related to reclassification adjustment	1,381	0	1,996
Reclassification adjustment for gains included in net earnings, net of tax	-1,894	0	-2,756
Other comprehensive income, net of tax	2,364	5,559	10,172
Comprehensive income	$75,443	$76,558	$35,252

Consolidated_Statement_of_Shar

Consolidated Statement of Shareholders' Equity (USD $)	Total	Common Stock [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]
In Thousands, except Share data, unless otherwise specified
Stockholders' Equity Attributable to Parent at Dec. 31, 2014	$3,506,230	$1,042	($42,647)	$26,380	$3,807,167	($285,712)
Common Shares [Abstract]
Shares, Outstanding		103,044,257
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		20,940
Stock Issued During Period, Shares, Dividend Reinvestment Plan		1,300
Net earnings	73,079					73,079
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	2,364	0	0	2,364	0	0
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	3,112	0	0	0	3,112	0
Stock Issued During Period, Value, Dividend Reinvestment Plan	58	0	0	0	58	0
Dividends, Common Stock, Cash	51,482	0	0	0	51,482	0
Stockholders' Equity Attributable to Parent at Mar. 31, 2015	$3,533,361	$1,042	($42,647)	$28,744	$3,758,855	($212,633)

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net earnings	$73,079	$25,080
Depreciation and amortization	10,648	6,653
Provision (negative provision) for credit losses	16,434	-644
Loss (gain) on sale of foreclosed assets	106	-2,323
Provision for losses on foreclosed assets	124	94
Gain on sale of loans and leases	0	-106
Gain on sale of premises and equipment	-3	-1,571
Gain on sale of securities	-3,275	-4,752
Unrealized gain on derivatives and foreign currencies, net	-2,715	0
Earned stock compensation	3,112	1,611
Tax effect included in stockholders' equity of restricted stock vesting	0	-1,110
Increase in accrued and deferred income taxes, net	38,722	19,679
Decrease in other assets	19,356	4,740
Decrease in accrued interest payable and other liabilities	-29,102	-20,107
Net cash provided by operating activities	126,486	27,244
Net Cash Provided by (Used in) Investing Activities [Abstract]
Net (increase) decrease in loan and leases	-403,438	149,440
Proceeds from sale of loans and leases	0	1,128
Proceeds from maturities and paydowns	27,547	33,860
Proceeds from sales	144,945	142,041
Purchases	-196,568	-140,048
Net redemptions of Federal Home Loan Bank stock	11,704	2,939
Proceeds from sales of foreclosed assets	7,945	7,209
Purchases of premises and equipment, net	-1,490	-1,115
Proceeds from sales of premises and equipment	29	3,753
Net cash (used in) provided by investing activities	-409,326	199,207
Net Cash Provided by (Used in) Financing Activities [Abstract]
Noninterest-bearing	97,224	73,163
Interest-bearing	80,914	15,258
Net increase (decrease) in borrowings	234,754	-107,953
Restricted stock surrendered	0	-2,058
Tax effect included in stockholders' equity of restricted vesting stock	0	1,110
Cash dividends paid	-51,424	-11,306
Net cash provided by (used in) financing activities	361,468	-31,786
Net increase in cash and cash equivalents	78,628	194,665
Cash and Cash Equivalents, Beginning Balance	313,226	147,422
Cash and Cash Equivalents, Ending Balance	391,854	342,087
Noncash transactions from investing activities:
Cash paid for interest	12,334	2,483
Cash received for income taxes	-7,695	-5,693
Loans transferred to foreclosed assets	$394	$13

Organization

Organization	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Note 1.  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 Los Angeles‑based wholly owned banking subsidiary, Pacific Western Bank, which we refer to as “Pacific Western” or the “Bank.” When we say “we,” “our,” or the “Company,” we mean 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 March 31, 2015, we had total assets of $16.6 billion, gross loans and leases of $12.3 billion, total deposits of $11.9 billion and total stockholders' equity of $3.5 billion.
	Pacific Western is a full-service commercial bank offering a broad range of banking products and services including accepting demand, money market, and time deposits and originating loans and leases, including an array of commercial real estate loans and commercial lending products. The Bank strives to attract locally generated and relationship-based deposits, with 80 full-service branches located primarily in Southern California, extending from San Diego County to California’s Central Coast. The Bank also operates three banking offices in the San Francisco Bay area and four banking offices in the Central Valley. Our targeted collateral for real estate loan offerings includes healthcare properties, office properties, industrial properties, multifamily properties, hospitality properties, and retail properties. Our commercial loan products include equipment loans and leases, asset-based loans, loans to finance companies, and loans secured by borrower future cash flows.
	As a result of the CapitalSource Inc. merger, Pacific Western Bank established the CapitalSource Division, which we also refer to as the National Lending segment. The CapitalSource Division lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans and leases, and cash flow loans and providing real estate loans secured by various property types. The Bank's leasing operation, Pacific Western Equipment Finance, and its group specializing in asset-based lending, CapitalSource Business Finance Group (formerly BFI Business Finance and First Community Financial), are part of the CapitalSource Division. The CapitalSource Division’s loan and lease origination efforts are conducted through offices located in Chevy Chase, Maryland; Los Angeles and San Jose, California; St. Louis, Missouri; Denver, Colorado; Chicago, Illinois; New York, New York; and Midvale, Utah. 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 the Bank that specializes in middle-market lending on a nationwide basis.
	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 include interest paid by the Bank on deposits and borrowings, compensation and general operating expenses.
	We have completed 27 acquisitions from May 2000 through March 31, 2015, including the acquisition of CapitalSource Inc. Since 2000, 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 3, Acquisitions, for more information about the CapitalSource Inc. merger.
	Square 1 Financial, Inc. Merger Announcement
	On March 2, 2015, PacWest announced the signing of an agreement and plan of merger (the “Agreement”) whereby PacWest and Square 1 Financial, Inc. (“Square 1”) will merge in a transaction valued at approximately $849 million. The surviving company will be PacWest Bancorp and the surviving subsidiary bank will be Pacific Western Bank. The Square 1 lending operations will continue to do business under the name Square 1 as a division of Pacific Western Bank.
	Under the terms of the Agreement, Square 1 stockholders will receive 0.5997 shares of PacWest common stock for each share of Square 1 common stock. The total value of the per share merger consideration is $27.49, based on the $45.84 closing price of PacWest common stock on February 27, 2015, the last trading day before the transaction was announced.
	As of December 31, 2014, on a pro forma consolidated basis, after giving effect to the Square 1 merger, the Company would have had approximately $19.8 billion in assets with 80 branches throughout California and one branch in North Carolina.
	The transaction, currently expected to close in the fourth quarter of 2015, is subject to customary conditions, including the approval of bank regulatory authorities and the Square 1 stockholders.
	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, 2014 as filed with the Securities and Exchange Commission ("Form 10-K").
	Accounting Standard Adopted in 2015
	Effective January 1, 2015, the Company adopted new accounting guidance for investments in affordable housing projects that qualify for the low-income housing tax credit. As a result of the adoption of this new guidance, the Company made an accounting policy election to amortize the initial cost of its qualifying investments in proportion to the tax credits and other benefits received and to present the amortization as a component of income tax expense, referred to as the proportional amortization method. Previously, investments in low-income housing tax credits were accounted for under the equity method and such amortization was presented in other expense. The guidance was required to be applied retrospectively and accordingly, prior period amounts for other expense and tax expense have been revised to conform with the current period presentation. The revised amortization amounts for prior periods were not material.
	The retrospective application of the adoption of the new accounting guidance for the proportional amortization method resulted in a cumulative effect on retained earnings of a reduction of $195,000.
	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 adjustments and eliminations, consisting solely of normal recurring accruals, 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.
	The accompanying financial statements reflect our consolidated accounts. All significant intercompany accounts and transactions have been eliminated.
	Use of Estimates
	We have made a number of estimates and assumptions relating 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 carrying value of the FDIC loss sharing asset, 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 3, Acquisitions, the acquired assets and liabilities of CapitalSource Inc. 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. On the statements of earnings, the "Other expense" category includes loan-related legal expenses which were previously reported within the "Other professional services" category. On the balance sheets, the "Other assets" category includes "FDIC loss sharing asset," which was previously reported as a separate category. These reclassifications did not affect previously reported net earnings.

Discontinued_Operations_Discon

Discontinued Operations Discontinued Operations Notes	3 Months Ended
	Mar. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Note 2.  Discontinued Operations
	Discontinued operations include the income and expense related to Electronic Payment Services ("EPS"), a discontinued division of the Bank acquired in connection with the First California Financial Group, Inc. ("FCAL") acquisition. Liabilities of the EPS division were $20.4 million and $21.3 million at March 31, 2015 and December 31, 2014, and consisted primarily of noninterest‑bearing deposits, and are included in the condensed consolidated balance sheets under the caption “Accrued interest payable and other liabilities.” For segment reporting purposes, the EPS division is included in our Community Banking segment.

Acquisitions_Acquisitions_Note

Acquisitions Acquisitions Notes	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Acquisitions	Note 3.  Acquisitions
	The following assets acquired and liabilities assumed of CapitalSource Inc. are presented at estimated fair value as of its acquisition date:
		Acquisition and Date Acquired
		CapitalSource Inc.
		7-Apr-14
		(In thousands)
	Assets Acquired:
	Cash and due from banks	$	768,553
	Interest‑earning deposits in financial institutions	60,612
	Investment securities available‑for‑sale	382,797
	FHLB stock	46,060
	Loans and leases	6,877,427
	Equipment leased to others under operating leases	160,015
	Premises and equipment	12,663
	Foreclosed assets	6,382
	Income tax assets	304,856
	Goodwill	1,526,282
	Core deposit and customer relationship intangibles	6,720
	Other assets(1)	582,985
	Total assets acquired	$	10,735,352
	Liabilities Assumed:
	Noninterest‑bearing deposits	$	4,631
	Interest‑bearing deposits	6,236,419
	Other borrowings	992,109
	Subordinated debentures	300,918
	Accrued interest payable and other liabilities	124,087
	Total liabilities assumed	$	7,658,164
	Total consideration paid	$	3,077,188
	Summary of consideration:
	Cash paid	$	483,118
	PacWest common stock issued	2,594,070
	Total	$	3,077,188
	___________________
	-1	Includes a $484 million receivable for securities sales proceeds.
	CapitalSource Inc. Merger
	We acquired CapitalSource Inc. on April 7, 2014. As part of the merger, CapitalSource Bank (“CSB”), a wholly owned subsidiary of CapitalSource Inc., merged with and into Pacific Western Bank. We completed the merger in order to augment our loan and lease generation capabilities and to diversify our loan portfolio.
	At closing, we created the CapitalSource Division of the Bank. The CapitalSource Division provides a full spectrum of financing solutions across numerous industries and property types to middle market businesses nationwide. 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 the Bank that lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans and leases, and cash flow loans and providing real estate loans secured by various property types.
	The CapitalSource Inc. merger has been accounted for under the acquisition method of accounting. The assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the merger 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 $1.5 billion. All of the recognized goodwill was non‑deductible for tax purposes.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets Goodwill and Other Intangilbe Assets (Notes)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure	Note 4.  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"). In the first quarter of 2015, we finalized the estimated fair value of the deferred tax assets acquired in the CapitalSource Inc. merger which resulted in a $7.9 million decrease with a corresponding adjustment to increase goodwill.
	Goodwill and other intangible assets deemed to have indefinite lives generated from purchase 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 is 4.3 years. The aggregate CDI and CRI amortization expense is expected to be $6.0 million for 2015. The estimated aggregate amortization expense related to these intangible assets for each of the next five years is $4.1 million for 2016, $2.3 million for 2017, $2.0 million for 2018, $1.7 million for 2019, and $953,000 for 2020.
	The following table presents the changes in the carrying amount of goodwill for the period indicated:
		Goodwill
		(In thousands)
	Balance, December 31, 2014	$	1,720,479
	To adjust acquired CapitalSource Inc. deferred tax assets	7,901
	Balance, March 31, 2015	$	1,728,380
	The following table presents the changes in CDI and CRI and the related accumulated amortization for the periods indicated:
		Three Months Ended
		March 31,			December 31,			March 31,
		2015			2014			2014
		(In thousands)
	Gross Amount of CDI and CRI:
	Balance, end of period	$	53,090		$	53,090		$	48,963
	Accumulated Amortization:
	Balance, beginning of period	(35,886		)	(34,267		)	(31,715		)
	Amortization	(1,501		)	(1,619		)	(1,364		)
	Balance, end of period	(37,387		)	(35,886		)	(33,079		)
	Net CDI and CRI, end of period	$	15,703		$	17,204		$	15,884

Investments_Investments_Notes

Investments Investments (Notes)	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Investment	Note 5. 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:
		31-Mar-15											31-Dec-14
		Amortized Cost		Gross Unrealized Gains			Gross Unrealized Losses			Fair Value			Amortized Cost		Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
		(In thousands)
	Residential mortgage-backed securities:
	Government agency and
	government-sponsored enterprise
	pass-through securities	$	439,696	$	19,327		$	(131	)	$	458,892		$	515,902	$	20,142		$	(372	)	$	535,672
	Government agency and
	government-sponsored enterprise
	collateralized mortgage obligations	269,766		6,909			(451		)	276,224			275,513		3,513			(1,080		)	277,946
	Covered private label collateralized
	mortgage obligations	26,496		7,014			(66		)	33,444			26,889		7,153			(95		)	33,947
	Other private label collateralized
	mortgage obligations	9,645		52			(47		)	9,650			10,961		46			(93		)	10,914
	Municipal securities	579,344		15,708			(2,199		)	592,853			521,499		15,899			(1,282		)	536,116
	Corporate debt securities	47,485		683			(423		)	47,745			110,074		597			(562		)	110,109
	Collateralized loan obligations	112,883		922			—			113,805			—		—			—			—
	Government-sponsored enterprise debt
	securities	36,249		1,156			—			37,405			36,232		525			—			36,757
	Other securities	25,451		34			(94		)	25,391			25,801		33			(118		)	25,716
	Total	$	1,547,015	$	51,805		$	(3,411	)	$	1,595,409		$	1,522,871	$	47,908		$	(3,602	)	$	1,567,177
	Other securities consist primarily of asset‑backed securities. See Note 11, Fair Value Measurements, for information on fair value measurements and methodology.
	As of March 31, 2015, securities available‑for‑sale with a carrying value of $354.7 million were pledged as collateral for borrowings, public deposits and other purposes as required by various statutes and agreements.
	During the three months ended March 31, 2015 and 2014, we purchased $196.6 million and $140.0 million in securities available-for-sale.
	During the three months ended March 31, 2015, we sold $13.9 million of Texas municipal securities for an $883,000 gain, $67.5 million in corporate debt securities for a realized loss of $232,000 and $60.3 million in government agency and government-sponsored enterprise ("GSE") pass-through securities for a realized gross gain of $2.6 million. These securities were sold as part of our investment portfolio risk management activities. During the three months ended March 31, 2014, we sold $137.3 million in GSE pass through securities for which we realized a gross gain of $4.8 million. These securities were sold to take advantage of favorable market conditions for premium coupon seasoned GSE pass through securities. We redeployed the proceeds into single-maturity investments that were expected to perform better under the current market conditions.
	Realized gains or losses resulting from the sale of securities are calculated using the specific identification method and included in gain on securities. During the three months ended March 31, 2015 and 2014, we had $4.3 million and $12.9 million of net unrealized after-tax gains as a component of accumulated other comprehensive income.
	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:
		31-Mar-15
		Less Than 12 Months					12 Months or More						Total
		Fair Value		Gross Unrealized Losses			Fair Value			Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
		(In thousands)
	Residential mortgage-backed securities:
	Government agency and government-
	sponsored enterprise pass-through
	securities	$	5,031	$	(42	)	$	10,085		$	(89	)	$	15,116	$	(131	)
	Government agency and government-
	sponsored enterprise collateralized
	mortgage obligations	—		—			14,403			(451		)	14,403		(451		)
	Covered private label collateralized
	mortgage obligations	726		(6		)	643			(60		)	1,369		(66		)
	Other private label collateralized
	mortgage obligations	1,206		(46		)	360			(1		)	1,566		(47		)
	Municipal securities	112,361		(1,277		)	38,687			(922		)	151,048		(2,199		)
	Corporate debt securities	25,104		(423		)	—			—			25,104		(423		)
	Other securities	6,453		(72		)	10,020			(22		)	16,473		(94		)
	Total	$	150,881	$	(1,866	)	$	74,198		$	(1,545	)	$	225,079	$	(3,411	)
		31-Dec-14
		Less Than 12 Months					12 Months or More						Total
		Fair Value		Gross Unrealized Losses			Fair Value			Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
		(In thousands)
	Residential mortgage-backed securities:
	Government agency and government-
	sponsored enterprise pass-through
	securities	$	10,711	$	(13	)	$	27,100		$	(359	)	$	37,811	$	(372	)
	Government agency and government-
	sponsored enterprise collateralized
	mortgage obligations	23,908		(73		)	40,652			(1,007		)	64,560		(1,080		)
	Covered private label collateralized
	mortgage obligations	—		—			1,000			(95		)	1,000		(95		)
	Other private label collateralized
mortgage obligations	1,618		(93		)	—			—			1,618		(93		)
Municipal securities	11,854		(66		)	84,822			(1,216		)	96,676		(1,282		)
Corporate debt securities	52,071		(547		)	10,131			(15		)	62,202		(562		)
Other securities	6,440		(90		)	10,019			(28		)	16,459		(118		)
Total	$	106,602	$	(882	)	$	173,724		$	(2,720	)	$	280,326	$	(3,602	)
We reviewed the securities that were in a loss position at March 31, 2015, and concluded their losses were a result of the level of market interest rates relative to the types of securities and pricing changes caused by shifting supply and demand dynamics and not a result of downgraded credit ratings or other indicators of deterioration of the underlying issuers' ability to repay. Accordingly, we determined the securities were temporarily impaired and we did not recognize such impairment in the condensed consolidated statements of earnings. We occasionally sell securities for risk management purposes to reduce risks related to price volatility and duration. We do not foresee having to sell these securities strictly for liquidity needs and believe that it is more likely than not we would not be required to sell these securities before recovery of their amortized cost.
Contractual Maturities
The following table presents the contractual maturities of our available-for-sale securities portfolio based on amortized cost and carrying value as of the date indicated:
	31-Mar-15
	Amortized Cost		Estimated Fair Value
	(In thousands)
Due in one year or less	$	18,358	$	18,538
Due after one year through five years	76,173		76,515
Due after five years through ten years	276,933		287,023
Due after ten years	1,175,551		1,213,333
Total securities available-for-sale	$	1,547,015	$	1,595,409
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.
FHLB Stock
At March 31, 2015, we had a $28.9 million investment in Federal Home Loan Bank of San Francisco ("FHLB") stock carried at cost. During the three months ended March 31, 2015, FHLB stock declined $11.7 million due primarily to $15.6 million in redemptions, offset partially by $3.9 million in purchases. We evaluated the carrying value of our FHLB stock investment at March 31, 2015, and determined that it was not impaired. Our evaluation considered the long-term nature of the investment, the current financial and liquidity position of the FHLB, repurchase activity of excess stock by the FHLB at its carrying value, the return on the investment, and our intent and ability to hold this investment for a period of time sufficient to recover our recorded investment.
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
	31-Mar-15		31-Dec-14			31-Mar-14
	(In thousands)
Taxable interest	$	7,473	$	7,697		$	6,920
Non-taxable interest	3,894		3,593			3,328
Dividend income	828		915			575
Total interest income on investment securities	$	12,195	$	12,205		$	10,823

Loans_and_Credit_Quality

Loans and Credit Quality	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Loans and Credit Quality	Note 6.  Loans and Leases
	The Company’s loan and lease portfolio includes originated and purchased loans and leases. Originated loans and leases 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 we would be able to collect all contractually required payments, 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 it was 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 on acquired non-impaired loans are recognized as an adjustment to interest income over the contractual life of the loans using the effective interest method or taken into income 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:
		March 31, 2015												December 31, 2014
		Non-PCI												Non-PCI
		Loans				PCI								Loans				PCI
		and Leases				Loans				Total				and Leases				Loans				Total
		(In thousands)
	Real estate mortgage	$	5,601,937			$	226,502			$	5,828,439			$	5,350,827			$	256,489			$	5,607,316
	Real estate construction	331,108				1,897				333,005				309,162				6,924				316,086
	Commercial	6,021,282				25,664				6,046,946				5,852,420				27,155				5,879,575
	Consumer	93,619				283				93,902				101,423				284				101,707
	Total gross loans and leases	12,047,946				254,346				12,302,292				11,613,832				290,852				11,904,684
	Deferred fees and costs	(30,065		)		(61		)		(30,126		)		(22,191		)		(61		)		(22,252		)
	Total loans and leases, net of deferred fees	12,017,881				254,285				12,272,166				11,591,641				290,791				11,882,432
	Allowance for loan and lease losses	(79,680		)		(12,698		)		(92,378		)		(70,456		)		(13,999		)		(84,455		)
	Total net loans and leases	$	11,938,201			$	241,587			$	12,179,788			$	11,521,185			$	276,792			$	11,797,977
	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 March 31, 2015
		Real Estate Mortgage				Real Estate Construction				Commercial				Consumer				Total Non-PCI				Total 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	(1,453		)		—				(8,395		)		(63		)		(9,911		)		(579		)	(10,490		)
	Recoveries	1,295				632				410				194				2,531				11			2,542
	Provision (negative provision)	5,972				(2,707		)		13,921				(582		)		16,604				(733		)	15,871
	Balance, end of period	$	30,911			$	2,173			$	45,794			$	802			$	79,680			$	12,698		$	92,378
	Amount of the allowance applicable to loans and leases:
	Individually evaluated for impairment	$	1,500			$	55			$	10,493			$	178			$	12,226
	Collectively evaluated for impairment	$	29,411			$	2,118			$	35,301			$	624			$	67,454
	Acquired loans with deteriorated credit quality																					$	12,698
	Loan and Leases:
	Ending balance	$	5,588,430			$	328,709			$	6,007,067			$	93,675			$	12,017,881			$	254,285		$	12,272,166
	The ending balance of the loan and lease portfolio is composed of loans and leases:
	Individually evaluated for impairment	$	59,733			$	8,639			$	103,208			$	3,729			$	175,309
	Collectively evaluated for impairment	$	5,528,697			$	320,070			$	5,903,859			$	89,946			$	11,842,572
	Acquired loans with deteriorated credit quality																					$	254,285
		Three Months Ended March 31, 2014
		Real Estate Mortgage				Real Estate Construction				Commercial				Consumer				Total Non-PCI				Total PCI			Total
		(In thousands)
	Allowance for loan and lease losses:
	Balance, beginning of period	$	26,078			$	4,298			$	26,921			$	2,944			$	60,241			$	21,793		$	82,034
	Charge-offs	(94		)		—				(1,441		)		(15		)		(1,550		)		—			(1,550		)
	Recoveries	261				24				377				27				689				51			740
	Provision (negative provision)	(1,893		)		(219		)		1,883				829				600				(644		)	(44		)
	Balance, end of period	$	24,352			$	4,103			$	27,740			$	3,785			$	59,980			$	21,200		$	81,180
	Amount of the allowance applicable to loans and leases:
	Individually evaluated for impairment	$	2,690			$	251			$	5,337			$	387			$	8,665
	Collectively evaluated for impairment	$	21,662			$	3,852			$	22,403			$	3,398			$	51,315
	Acquired loans with deteriorated credit quality																					$	21,200
	Loan and Leases:
	Ending balance	$	2,320,554			$	240,073			$	1,201,142			$	66,782			$	3,828,551			$	332,516		$	4,161,067
	The ending balance of the loan and lease portfolio is composed of loans and leases:
	Individually evaluated for impairment	$	58,532			$	12,926			$	17,792			$	3,972			$	93,222
	Collectively evaluated for impairment	$	2,262,022			$	227,147			$	1,183,350			$	62,810			$	3,735,329
	Acquired loans with deteriorated credit quality																					$	332,516
	Non‑Purchased Credit Impaired (Non‑PCI) Loans and Leases
	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.
		31-Mar-15												December 31, 2014
		Classified				Nonclassified				Total				Classified				Nonclassified				Total
		(In thousands)
	Real estate mortgage:
Hospitality	$	16,928			$	595,161			$	612,089			$	17,761			$	542,458			$	560,219
SBA	10,919				377,857				388,776				11,141				364,786				375,927
Other	69,859				4,517,706				4,587,565				68,084				4,336,330				4,404,414
Total real estate mortgage	97,706				5,490,724				5,588,430				96,986				5,243,574				5,340,560
Real estate construction:
Residential	398				121,918				122,316				402				96,326				96,728
Commercial	1,456				204,937				206,393				3,346				207,061				210,407
Total real estate construction	1,854				326,855				328,709				3,748				303,387				307,135
Commercial:
Collateralized	21,265				373,123				394,388				22,433				416,754				439,187
Unsecured	1,267				142,047				143,314				1,323				130,501				131,824
Asset-based	11,304				1,708,473				1,719,777				11,547				1,783,304				1,794,851
Cash flow	105,763				2,687,421				2,793,184				83,321				2,376,530				2,459,851
Equipment finance	86,938				827,078				914,016				15,973				953,516				969,489
SBA	3,128				39,260				42,388				3,207				44,054				47,261
Total commercial	229,665				5,777,402				6,007,067				137,804				5,704,659				5,842,463
Consumer	3,957				89,718				93,675				4,073				97,410				101,483
Total Non-PCI loans and leases	$	333,182			$	11,684,699			$	12,017,881			$	242,611			$	11,349,030			$	11,591,641
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.
The following tables present an aging analysis of our Non‑PCI loans and leases by portfolio segment and class as of the dates indicated:
	31-Mar-15
	30-89 Days Past Due				90 or More				Total Past Due				Current				Total
					Days Past Due
	(In thousands)
Real estate mortgage:
Hospitality	$	—			$	—			$	—			$	612,089			$	612,089
SBA	5,582				5,487				11,069				377,707				388,776
Other	6,234				5,319				11,553				4,576,012				4,587,565
Total real estate mortgage	11,816				10,806				22,622				5,565,808				5,588,430
Real estate construction:
Residential	—				—				—				122,316				122,316
Commercial	—				—				—				206,393				206,393
Total real estate construction	—				—				—				328,709				328,709
Commercial:
Collateralized	1,782				424				2,206				392,182				394,388
Unsecured	—				16				16				143,298				143,314
Asset-based	—				—				—				1,719,777				1,719,777
Cash flow	—				—				—				2,793,184				2,793,184
Equipment finance	23,409				—				23,409				890,607				914,016
SBA	788				1,362				2,150				40,238				42,388
Total commercial	25,979				1,802				27,781				5,979,286				6,007,067
Consumer	9				3,196				3,205				90,470				93,675
Total Non-PCI loans and leases	$	37,804			$	15,804			$	53,608			$	11,964,273			$	12,017,881
	31-Dec-14
	30-89 Days Past Due				90 or More				Total Past Due				Current				Total
					Days Past Due
	(In thousands)
Real estate mortgage:
Hospitality	$	—			$	—			$	—			$	560,219			$	560,219
SBA	5,530				4,357				9,887				366,040				375,927
Other	6,098				7,630				13,728				4,390,686				4,404,414
Total real estate mortgage	11,628				11,987				23,615				5,316,945				5,340,560
Real estate construction:
Residential	—				—				—				96,728				96,728
Commercial	—				715				715				209,692				210,407
Total real estate construction	—				715				715				306,420				307,135
Commercial:
Collateralized	878				965				1,843				437,344				439,187
Unsecured	69				45				114				131,710				131,824
Asset-based	—				—				—				1,794,851				1,794,851
Cash flow	—				232				232				2,459,619				2,459,851
Equipment finance	6,525				366				6,891				962,598				969,489
SBA	205				1,362				1,567				45,694				47,261
Total commercial	7,677				2,970				10,647				5,831,816				5,842,463
Consumer	101				3,146				3,247				98,236				101,483
Total Non-PCI loans and leases	$	19,406			$	18,818			$	38,224			$	11,553,417			$	11,591,641
At March 31, 2015 and December 31, 2014, the Company had no loans and leases (excluding PCI loans) that were greater than 90 days past due and still accruing interest. It is the Company’s policy to discontinue accruing interest when principal or interest payments are past due 90 days or more unless the loan is both well secured and in the process of collection or when, in the judgment of management, there is a reasonable doubt as to the collectibility of a loan or lease in the normal course of business. Interest income on nonaccrual loans is recognized only to the extent cash is received and the principal balance of the loan is deemed collectible.
The following table presents our nonaccrual and performing Non‑PCI loans and leases by portfolio segment and class as of the dates indicated:
	31-Mar-15												31-Dec-14
	Nonaccrual				Performing				Total				Nonaccrual				Performing				Total
	(In thousands)
Real estate mortgage:
Hospitality	$	8,088			$	604,001			$	612,089			$	6,366			$	553,853			$	560,219
SBA	10,919				377,857				388,776				11,141				364,786				375,927
Other	18,328				4,569,237				4,587,565				20,105				4,384,309				4,404,414
Total real estate mortgage	37,335				5,551,095				5,588,430				37,612				5,302,948				5,340,560
Real estate construction:
Residential	379				121,937				122,316				381				96,347				96,728
Commercial	453				205,940				206,393				1,178				209,229				210,407
Total real estate construction	832				327,877				328,709				1,559				305,576				307,135
Commercial:
Collateralized	3,601				390,787				394,388				5,450				433,737				439,187
Unsecured	594				142,720				143,314				639				131,185				131,824
Asset-based	4,159				1,715,618				1,719,777				4,574				1,790,277				1,794,851
Cash flow	15,172				2,778,012				2,793,184				15,964				2,443,887				2,459,851
Equipment finance	71,039				842,977				914,016				11,131				958,358				969,489
SBA	3,128				39,260				42,388				3,207				44,054				47,261
Total commercial	97,693				5,909,374				6,007,067				40,965				5,801,498				5,842,463
Consumer	3,474				90,201				93,675				3,485				97,998				101,483
Total Non-PCI loans and leases	$	139,334			$	11,878,547			$	12,017,881			$	83,621			$	11,508,020			$	11,591,641
At March 31, 2015, nonaccrual loans and leases totaled $139.3 million. Nonaccrual loans and leases included all loans and leases 90 or more days past due of $15.8 million, $21.7 million of loans 30 to 89 days past due, and $101.8 million of current loans that were placed on nonaccrual status based on management’s judgment regarding their collectibility. Nonaccrual loans and leases totaled $83.6 million at December 31, 2014, including all loans and leases 90 or more days past due of $18.8 million, $8.7 million of loans 30 to 89 days past due, and $56.1 million of current loans that were placed on nonaccrual status based on management’s judgment regarding their collectibility. The increase in nonaccrual loans and leases generally, and equipment finance loans and leases specifically, was due to three relationships totaling $64.9 million that are related to the oil and gas industries and which have been adversely impacted by continued low oil prices.
Non‑PCI nonaccrual loans and leases and performing 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:
	March 31, 2015												December 31, 2014
					Performing				Total								Performing				Total
	Nonaccrual				Restructured				Impaired				Nonaccrual				Restructured				Impaired
	Loans/Leases				Loans				Loans/Leases				Loans/Leases				Loans				Loans/Leases
	(In thousands)
Real estate mortgage	$	37,335			$	22,398			$	59,733			$	37,612			$	20,245			$	57,857
Real estate construction	832				7,807				8,639				1,559				8,996				10,555
Commercial	97,693				5,515				103,208				40,965				5,744				46,709
Consumer	3,474				255				3,729				3,485				259				3,744
Total	$	139,334			$	35,975			$	175,309			$	83,621			$	35,244			$	118,865
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:
	31-Mar-15												31-Dec-14
	Recorded Investment				Unpaid Principal Balance				Related				Recorded Investment				Unpaid Principal Balance				Related
									Allowance												Allowance
	(In thousands)
With An Allowance Recorded:
Real estate mortgage:
Hospitality	$	1,930			$	1,930			$	31			$	1,946			$	1,945			$	47
SBA	—				—				—				—				—				—
Other	12,986				13,169				1,469				9,136				9,233				646
Real estate construction:
Residential	759				759				41				763				763				46
Commercial	403				401				14				1,128				4,934				23
Commercial:
Collateralized	4,811				5,486				3,497				4,630				5,246				3,771
Unsecured	1,055				1,067				913				912				924				799
Asset-based	47				157				47				137				247				137
Cash flow	14,974				17,694				2,522				15,578				17,970				2,667
Equipment finance	9,347				9,764				3,514				6,956				7,268				2,601
SBA	—				—				—				—				—				—
Consumer	383				386				178				143				142				37
With No Related Allowance Recorded:
Real estate mortgage:
Hospitality	$	8,088			$	10,096			$	—			$	6,366			$	7,593			$	—
SBA	10,919				15,030				—				11,141				14,708				—
Other	25,810				39,548				—				29,268				40,643				—
Real estate construction:
Residential	20				19				—				21				19				—
Commercial	7,457				7,571				—				8,643				8,749				—
Commercial:
Collateralized	3,324				4,234				—				5,566				6,877				—
Unsecured	519				564				—				725				809				—
Asset-based	4,111				5,220				—				4,436				5,415				—
Cash flow	198				735				—				387				919				—
Equipment finance	61,694				67,850				—				4,175				7,528				—
SBA	3,128				4,762				—				3,207				4,920				—
Consumer	3,346				3,506				—				3,601				3,768				—
Total Non-PCI Loans and Leases With and Without an Allowance Recorded:
Real estate mortgage	$	59,733			$	79,773			$	1,500			$	57,857			$	74,122			$	693
Real estate construction	8,639				8,750				55				10,555				14,465				69
Commercial	103,208				117,533				10,493				46,709				58,123				9,975
Consumer	3,729				3,892				178				3,744				3,910				37
Total	$	175,309			$	209,948			$	12,226			$	118,865			$	150,620			$	10,774
	Three Months Ended March 31,
	2015								2014
	Weighted Average				Interest				Weighted Average				Interest
	Balance(1)				Income				Balance(1)				Income
					Recognized								Recognized
	(In thousands)
With An Allowance Recorded:
Real estate mortgage:
Hospitality	$	1,930			$	19			$	5,658			$	20
SBA	—				—				1,092				15
Other	12,783				136				16,174				119
Real estate construction:
Residential	759				4				774				4
Commercial	403				5				5				—
Commercial:
Collateralized	4,646				33				3,765				6
Unsecured	1,055				11				742				6
Asset-based	47				—				304				—
Cash flow	14,973				—				—				—
Equipment finance	4,581				—				—				—
SBA	—				—				919				10
Consumer	383				4				2,151				4
With No Related Allowance Recorded:
Real estate mortgage:
Hospitality	$	7,836			$	—			$	2,971			$	—
SBA	9,836				—				2,519				—
Other	24,219				80				23,549				63
Real estate construction:
Residential	20				—				—				—
Commercial	7,457				271				5,491				25
Commercial:
Collateralized	3,324				48				4,861				6
Unsecured	519				1				326				—
Asset-based	4,111				—				—				—
Cash flow	198				—				—				—
Equipment finance	7,537				—				220				—
SBA	3,128				45				3,132				2
Consumer	3,345				—				251				1
Total Non-PCI Loans and Leases With and Without an Allowance Recorded:
Real estate mortgage	$	56,604			$	235			$	51,963			$	217
Real estate construction	8,639				280				6,270				29
Commercial	44,119				138				14,269				30
Consumer	3,728				4				2,402				5
Total	$	113,090			$	657			$	74,904			$	281
_________________________
-1	For the loans and leases (excluding PCI loans) reported as impaired at March 31, 2015 and 2014, 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 table presents new troubled debt restructurings of Non-PCI loans for the periods indicated:
	Three Months Ended March 31, 2015											Three Months Ended March 31, 2014
Troubled Debt Restructurings:	Number of Loans			Pre- Modification Outstanding Recorded Investment				Post-Modification Outstanding Recorded Investment				Number of Loans			Pre- Modification Outstanding Recorded Investment				Post-Modification Outstanding Recorded Investment
	(Dollars in thousands)
Real estate mortgage:
Other	14			$	6,074			$	5,886			4			$	2,515			$	2,515
Real estate construction:
Commercial	1			2,610				2,610				2			4,927				4,927
Commercial:
Collateralized	6			1,399				1,399				4			3,287				3,287
Unsecured	1			195				195				2			38				38
Cash flow	2			566				387				—			—				—
Equipment finance	4			4,133				4,133				—			—				—
SBA	1			—				—				1			238				238
Consumer	1			91				91				1			124				124
Total	30			$	15,068			$	14,701			14			$	11,129			$	11,129
The following table presents troubled debt restructurings that subsequently defaulted for the periods indicated:
	Three Months Ended March 31,
	2015							2014
Troubled Debt Restructurings	Number of			Recorded				Number of			Recorded
That Subsequently Defaulted:	Loans			Investment(1)				Loans			Investment(1)
	(Dollars in thousands)
Real estate mortgage - Other	2			$	1,519			—			$	—
Commercial:
Collateralized	1			385				2			559
Unsecured	—			—				1			21
Asset-based	—			—				1			301
Total	3			$	1,904		-2	4			$	881		-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 March 31, 2015, and is net of charge-offs of $772,000.
-3	Represents the balance at March 31, 2014, and there were no charge-offs.
Purchased Credit Impaired (PCI) Loans
The following table reflects the PCI loans by portfolio segment as of the dates indicated:
	March 31, 2015				December 31, 2014
	(In thousands)
Real estate mortgage	$	268,777			$	299,660
Real estate construction	2,540				7,743
Commercial	31,185				32,904
Consumer	326				332
Total gross PCI loans	302,828				340,639
Less:
Discount	(48,543		)		(49,848		)
Allowance for loan losses	(12,698		)		(13,999		)
Total net PCI loans	$	241,587			$	276,792
The following table summarizes the changes in the carrying amount of PCI loans and accretable yield on those loans for the period indicated:
	Carrying Amount				Accretable Yield
	(In thousands)
Balance, December 31, 2014	$	276,792			$	(106,856	)
Accretion	10,183				10,183
Payments received	(46,121		)		—
Increase in expected cash flows, net	—				(6,190		)
Negative provision for credit losses	733				—
Balance, March 31, 2015	$	241,587			$	(102,863	)
The following table presents PCI loans by credit risk rating categories and portfolio segment as of the dates indicated. Nonclassified loans are those with a credit risk rating of either pass or special mention, while classified loans are those with a credit risk rating of either substandard or doubtful.
	31-Mar-15												31-Dec-14
	Classified				Nonclassified				Total				Classified				Nonclassified				Total
	(In thousands)
Real estate mortgage	$	77,548			$	148,902			$	226,450			$	101,161			$	155,281			$	256,442
Real estate construction	1,888				—				1,888				3,901				3,010				6,911
Commercial	25,476				188				25,664				26,942				212				27,154
Consumer	283				—				283				284				—				284
Total PCI loans	$	105,195			$	149,090			$	254,285			$	132,288			$	158,503			$	290,791
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 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.

Foreclosed_Assets_Foreclosed_A

Foreclosed Assets Foreclosed Assets (Notes)	3 Months Ended
	Mar. 31, 2015
Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract]
Other Real Estate Owned and Foreclosed Assets	Note 7.  Foreclosed Assets
	The following table summarizes foreclosed assets at the dates indicated:
	Property Type:	31-Mar-15			31-Dec-14
		(In thousands)
	Commercial real estate	$	1,036		$	2,449
	Construction and land development	18,942			24,759
	Multi‑family	4,964			4,823
	Single family residence	3,253			3,392
	Total other real estate owned, net	28,195			35,423
	Other foreclosed assets	7,745			8,298
	Total foreclosed assets, net(1)	$	35,940		$	43,721
	_________________________
	-1	As of March 31, 2015 and December 31, 2014 , the amounts of covered foreclosed assets were $8.1 million and $9.3 million.
	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, 2014	$	43,721
	Foreclosures	394
	Provision for losses	(124		)
	Reductions related to sales	(8,051		)
	Balance, March 31, 2015	$	35,940

FDIC_Loss_Sharing_Asset_FDIC_L

FDIC Loss Sharing Asset FDIC Loss Sharing Asset (Notes)	3 Months Ended
	Mar. 31, 2015
FDIC Loss-Sharing Arrangements [Abstract]
FDIC Loss Sharing Asset Disclosure	Note 8.  FDIC Loss Sharing Asset
	We are a party to four loss sharing agreements with the FDIC. Such agreements cover a substantial portion of losses incurred on acquired covered loans and other real estate owned. The loss sharing agreements relate to the acquisitions of: (1) Affinity Bank ("Affinity") in August 2009, (2) Los Padres Bank ("Los Padres") in August 2010, (3) Western Commercial Bank ("Western Commercial") in connection with the May 2013 FCAL acquisition, and (4) San Luis Trust Bank ("San Luis") in connection with the May 2013 First California Financial Group, Inc. ("FCAL") acquisition. Generally, under the terms of the loss sharing agreements, the FDIC is responsible for 80% of losses in connection with covered assets and is entitled to receive 80% of loss recoveries on the covered assets during the applicable contractual periods. The loss sharing provisions for the Affinity Bank non-single family covered assets expired in the third quarter of 2014; accordingly, further activity will be limited only to recoveries through the third quarter of 2017 for assets covered by this loss sharing agreement.
	Both the Western Commercial and San Luis loss sharing agreements contain true-up provisions, under which we will owe the FDIC amounts at the end of the loss sharing agreements based on the performance of the covered assets. The true-up liability is included in "Accrued interest payable and other liabilities" in the condensed consolidated balance sheets.
	The following table presents information about the composition of the FDIC loss sharing asset, the true‑up liability, and the non‑single family and the single family covered assets as of the date indicated:
		31-Mar-15
		Affinity Bank		Los Padres Bank		Western Commercial Bank		San Luis Trust Bank		Total
		(In thousands)
	FDIC loss sharing asset	$	140	$	8,161	$	710	$	7,521	$	16,532
	True‑up liability	N/A		N/A		$	1,773	$	5,517	$	7,290
	Non-single family covered assets(1)	$	105,614	$	73,072	$	8,799	$	26,001	$	213,486
	Single family covered assets	$	10,932	$	55,447	N/A		$	29,101	$	95,480
	Loss sharing expiration dates:
	Non‑single family	3rd Quarter 2014		3rd Quarter 2015		4th Quarter 2015		1st Quarter 2016
	Single family	3rd Quarter 2019		3rd Quarter 2020		N/A		1st Quarter 2021
	Loss recovery expiration dates:
	Non‑single family	3rd Quarter 2017		3rd Quarter 2018		4th Quarter 2018		1st Quarter 2019
	Single family	3rd Quarter 2019		3rd Quarter 2020		N/A		1st Quarter 2021
	_________________________
	-1	Excludes securities

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2015
Borrowings Subordinated Debentures And Brokered Deposits [Abstract]
Borrowings, Subordinated Debentures and Brokered Deposit	Note 9. Borrowings, Subordinated Debentures and Brokered Deposits
	Borrowings
	The following table summarizes our borrowings as of the dates indicated:
		March 31, 2015					December 31, 2014
		Amount			Rate		Amount			Rate
		(Dollars in thousands)
	Non‑recourse debt	$	3,156		6.34	%	$	3,402		6.43	%
	FHLB overnight advances	615,000			0.24	%	380,000			0.27	%
	Total borrowings	$	618,156				$	383,402
	The non‑recourse debt represents the payment stream of certain equipment leases sold to third parties. The debt is secured by the equipment in the leases and all interest rates are fixed. As of March 31, 2015, this debt had a weighted average remaining maturity of 2.5 years.
	PacWest has an unsecured, variable-rate revolving line of credit in the amount of $75.0 million with an expiration date of September 30, 2015. This borrowing facility provides additional available liquidity to the Company. As of March 31, 2015 and December 31, 2014, there were no balances outstanding.
	The Bank has established secured and unsecured lines of credit. We may borrow funds from time to time on a term or overnight basis from the FHLB, the Federal Reserve Bank of San Francisco (“FRBSF”), or 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 in our loan portfolio which are not pledged to the FRBSF. As of March 31, 2015, our borrowing capacity under the FHLB secured borrowing lines was $2.4 billion. As of March 31, 2015 and December 31, 2014, the balances outstanding were $615.0 million and $380.0 million.
	FRBSF Secured Line of Credit. The Bank has a secured line of credit with the FRBSF. As of March 31, 2015, the Bank had secured borrowing capacity of $1.5 billion collateralized by liens covering $2.1 billion of certain qualifying loans. As of March 31, 2015 and December 31, 2014, there were no balances outstanding.
	Federal Funds Arrangements with Commercial Banks. As of March 31, 2015, the Bank had 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 March 31, 2015 and December 31, 2014, there were no balances outstanding.
	Subordinated Debentures
	The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated:
		31-Mar-15					31-Dec-14
												Date	Maturity	Rate Index
	Series	Amount			Rate		Amount			Rate		Issued	Date	(Quarterly Reset)
		(Dollars in thousands)
	Trust V	$	10,310		3.37	%	$	10,310		3.33	%	8/15/03	9/17/33	3 month LIBOR + 3.10
	Trust VI	10,310			3.32	%	10,310			3.29	%	9/3/03	9/15/33	3 month LIBOR + 3.05
	Trust CII	5,155			3.22	%	5,155			3.19	%	9/17/03	9/17/33	3 month LIBOR + 2.95
	Trust VII	61,856			3	%	61,856			2.98	%	2/5/04	4/23/34	3 month LIBOR + 2.75
	Trust CIII	20,619			1.96	%	20,619			1.93	%	8/15/05	9/15/35	3 month LIBOR + 1.69
	Trust FCCI	16,495			1.87	%	16,495			1.84	%	1/25/07	3/15/37	3 month LIBOR + 1.60
	Trust FCBI	10,310			1.82	%	10,310			1.79	%	9/30/05	12/15/35	3 month LIBOR + 1.55
	Trust CS 2005-1 (1)	82,475			2.22	%	82,475			2.19	%	11/21/05	12/15/35	3 month LIBOR + 1.95
	Trust CS 2005-2 (1)	128,866			2.2	%	128,866			2.18	%	12/14/05	1/30/36	3 month LIBOR + 1.95
	Trust CS 2006-1 (1)	51,545			2.2	%	51,545			2.18	%	2/22/06	4/30/36	3 month LIBOR + 1.95
	Trust CS 2006-2 (1)	51,550			2.2	%	51,550			2.18	%	9/27/06	10/30/36	3 month LIBOR + 1.95
	Trust CS 2006-3 (1)(3)	27,651			2.1	%	31,188			2.14	%	9/29/06	10/30/36	3 month EURIBOR + 2.05
	Trust CS 2006-4 (1)	16,470			2.2	%	16,470			2.18	%	12/5/06	1/30/37	3 month LIBOR + 1.95
	Trust CS 2006-5 (1)	6,650			2.2	%	6,650			2.18	%	12/19/06	1/30/37	3 month LIBOR + 1.95
	Trust CS 2007-2 (1)	39,177			2.2	%	39,177			2.18	%	6/13/07	7/30/37	3 month LIBOR + 1.95
	Gross subordinated debentures	539,439					542,976
	Unamortized discount (2)	(107,991		)			(109,393		)
	Net subordinated debentures	$	431,448				$	433,583
	___________________
	-1	Acquired in the CapitalSource Inc. merger.
	-2	Amount represents the fair value adjustment on trust preferred securities assumed in the CapitalSource Inc. and FCAL acquisitions.
	-3	Denomination is in Euros with a value of €25.8 million.
	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 to stockholders during any period in which quarterly and/or cumulative twelve‑month net earnings are insufficient to fund the dividend amount, among other requirements.
	Brokered Time Deposits
	Brokered time deposits totaled $814.9 million and $636.7 million at March 31, 2015 and December 31, 2014. During the first quarter of 2015, the Company added $178.2 million of brokered time deposits. Brokered time deposits under the Certificate of Deposit Account Registry Service Program ("CDARS Program") totaled $46.5 million and $44.0 million at March 31, 2015 and December 31, 2014. The CDARS Program represents deposits that are participated with other FDIC‑insured financial institutions as a means to provide FDIC deposit insurance coverage for the full amount of our customers’ deposits.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 10. Commitments and Contingencies
	Lending Commitments
	The Bank 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:
		31-Mar-15		31-Dec-14
		(In thousands)
	Loan commitments to extend credit	$	2,122,749	$	1,921,067
	Standby letters of credit	97,540		88,495
	Commitments to purchase equipment being acquired for lease to others	23,535		12,839
		$	2,243,824	$	2,022,401
	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, the Company has investments in low income housing project partnerships, which provide the Company income tax credits, and in a few small business investment companies. The investments call for capital contributions up to an amount specified in the partnership agreements. As of March 31, 2015 and December 31, 2014, the Company had commitments to contribute capital to these entities totaling $13.4 million and $11.0 million. In connection with equity investments added from the CapitalSource Inc. merger, we had commitments to contribute up to an additional $2.8 million and $2.9 million to 11 private equity funds at March 31, 2015 and December 31, 2014.
	Legal Matters
	In the ordinary course of our business, we are 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 information currently available to us, any resulting liability, in addition to amounts already accrued, would not have a material adverse effect on the Company’s financial statements or operations.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 11.  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 government agency and government‑sponsored enterprise securities.
	•	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 covered private label CMOs.
	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 measured and recorded at fair value on a recurring basis as of the dates indicated:
		Fair Value Measurements as of
		March 31, 2015
	Measured on a Recurring Basis:	Total			Level 1			Level 2			Level 3
		(In thousands)
	Securities available‑for‑sale:
	Government agency and government‑sponsored enterprise
	pass-through securities	$	458,892		$	—		$	458,892		$	—
	Government agency and government‑sponsored enterprise
	collateralized mortgage obligations	276,224			—			276,224			—
	Covered private label CMOs	33,444			—			—			33,444
	Other private label CMOs	9,650			—			9,650			—
	Municipal securities	592,853			—			592,853			—
	Corporate debt securities	47,745			—			47,745			—
	Collateralized loan obligations	113,805			—			113,805			—
	Government‑sponsored enterprise debt securities	37,405			—			37,405			—
	Other securities	25,391			524			24,867			—
	Total securities available-for-sale	1,595,409			524			1,561,441			33,444
	Derivative assets	9,749			—			9,749			—
	Total recurring assets	$	1,605,158		$	524		$	1,571,190		$	33,444
		Fair Value Measurements as of
		December 31, 2014
	Measured on a Recurring Basis:	Total			Level 1			Level 2			Level 3
		(In thousands)
	Securities available‑for‑sale:
	Government agency and government‑sponsored enterprise
	pass-through securities	$	535,672		$	—		$	535,672		$	—
	Government agency and government‑sponsored enterprise
	collateralized mortgage obligations	277,946			—			277,946			—
	Covered private label CMOs	33,947			—			—			33,947
	Other private label CMOs	10,914			—			10,914			—
	Municipal securities	536,116			—			536,116			—
	Corporate debt securities	110,109			—			110,109			—
	Government‑sponsored enterprise debt securities	36,757			—			36,757			—
	Other securities	25,716			519			25,197			—
	Total securities available-for-sale	1,567,177			519			1,532,711			33,947
	Derivative assets	5,234			—			5,234			—
	Total recurring assets	$	1,572,411		$	519		$	1,537,945		$	33,947
	Derivative liabilities	$	118		$	—		$	118		$	—
	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 three months ended March 31, 2015.
	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 covered private label CMOs measured at fair value on a recurring basis as of March 31, 2015:
		Covered Private Label CMOs
	Unobservable Inputs:	Range of Inputs		Weighted Average Input
	Voluntary annual prepayment speeds	0% - 34.4%		5.70%
	Annual default rates	0% - 42.7%		2.90%
	Loss severity rates	0% - 71.2%		30.20%
	Discount rates	0% - 22.6%		5.60%
	The following table summarizes activity for assets measured at fair value on a recurring basis that are categorized as Level 3 for the period indicated:
		Covered Private Label CMOs
		(In thousands)
	Balance, December 31, 2014	$	33,947
	Total realized in earnings	154
	Total unrealized loss in comprehensive income	(109		)
	Net settlements	(548		)
	Balance, March 31, 2015	$	33,444
	The following tables present assets measured at fair value on a non‑recurring basis as of the dates indicated:
		Fair Value Measurement as of
		March 31, 2015
	Total			Level 1			Level 2			Level 3
Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	59,243		$	—		$	2,179		$	57,064
Other real estate owned	782			—			782			—
Total non-recurring	$	60,025		$	—		$	2,961		$	57,064
	Fair Value Measurement as of
	December 31, 2014
	Total			Level 1			Level 2			Level 3
Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	42,693		$	—		$	2,366		$	40,327
Other real estate owned	24,015			—			18,400			5,615
Investments carried at cost	566			—			—			566
Total non-recurring	$	67,274		$	—		$	20,766		$	46,508
The following table presents losses recognized on assets measured on a nonrecurring basis for the period indicated:
	Three Months Ended
	March 31, 2015
Loss on Assets Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	(9,192	)
Other real estate owned	(124		)
Total net loss	$	(9,316	)
The following table presents the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis as of March 31, 2015:
Asset		Fair Value			Valuation Technique	Unobservable Inputs		Range	Weighted
		(In thousands)							Average
Impaired Non-PCI loans		$	32,905		Discounted cash flows	Discount rates		2.75% - 10.46%	6.73%
		24,159			Appraisals	No discounts
Total non-recurring Level 3		$	57,064
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:
	31-Mar-15
	Carrying or			Estimated Fair Value
	Contract
	Amount			Total			Level 1			Level 2		Level 3
	(In thousands)
Financial Assets:
Cash and due from banks	$	140,873		$	140,873		$	140,873		$	—	$	—
Interest‑earning deposits in financial institutions	250,981			250,981			250,981			—		—
Securities available‑for‑sale	1,595,409			1,595,409			524			1,561,441		33,444
Investment in FHLB stock	28,905			28,905			—			28,905		—
Investments carried at cost	3,100			3,534			—			—		3,534
Investments accounted for under the equity method	21,226			21,475			—			—		21,475
Loans and leases, net	12,179,788			12,280,982			—			2,179		12,278,803
Derivative assets	9,749			9,749			—			9,749		—
Financial Liabilities:
Deposits:
Demand, money market, interest checking, and savings deposits	6,353,376			6,353,376			—			6,353,376		—
Time deposits	5,580,799			5,584,088			—			5,584,088		—
Borrowings	618,156			618,351			615,000			3,351		—
Subordinated debentures	431,448			415,210			—			415,210		—
	31-Dec-14
	Carrying or			Estimated Fair Value
	Contract
	Amount			Total			Level 1			Level 2		Level 3
	(In thousands)
Financial Assets:
Cash and due from banks	$	164,757		$	164,757		$	164,757		$	—	$	—
Interest‑earning deposits in financial institutions	148,469			148,469			148,469			—		—
Securities available‑for‑sale	1,567,177			1,567,177			519			1,532,711		33,947
Investment in FHLB stock	40,609			40,609			—			40,609		—
Investments carried at cost	3,691			3,691			—			—		3,691
Investments accounted for under the equity method	21,461			21,700			—			—		21,700
Loans and leases, net	11,797,977			11,757,951			—			2,366		11,755,585
Derivative assets	5,234			5,234			—			5,234		—
Financial Liabilities:
Deposits:
Demand, money market, interest checking, and savings deposits	6,256,190			6,256,190			—			6,256,190		—
Time deposits	5,498,938			5,502,479			—			5,502,479		—
Borrowings	383,402			383,539			380,000			3,539		—
Subordinated debentures	433,583			417,657			—			417,657		—
Derivative liabilities	118			118			—			118		—
The following is a description of the valuation methodologies used to measure our assets recorded at fair value (under ASC Topic 820, “Fair Value Measurement”) and for estimating fair value for financial instruments not recorded at fair value (under ASC Topic 825).
Cash and due from banks. The carrying amount is assumed to be the fair value because of the liquidity of these instruments.
Interest‑earning deposits in financial institutions. The carrying amount is assumed to be the fair value given the short‑term nature of these deposits.
Securities available‑for‑sale. Securities available‑for‑sale are measured and carried at fair value on a recurring basis. Unrealized gains and losses on available‑for‑sale securities are reported as a component of “Accumulated other comprehensive income” in the condensed consolidated balance sheets. See Note 5, Investment Securities, for further information on unrealized gains and losses on securities available‑for‑sale.
Fair value for securities categorized as Level 1, which are publicly traded securities, are based on readily available quoted prices. In determining the fair value of the securities categorized as Level 2, we obtain a report from a nationally recognized broker‑dealer detailing the fair value of each investment security we hold as of each reporting date. The broker‑dealer uses observable market information to value our securities, with the primary source being a nationally recognized pricing service. We review the market prices provided by the broker‑dealer for our securities for reasonableness based on our understanding of the marketplace and we consider any credit issues related to the securities. As we have not made any adjustments to the market quotes provided to us and they are based on observable market data, they have been categorized as Level 2 within the fair value hierarchy.
Our covered private label CMOs are categorized as Level 3 due in part to the inactive market for such securities. There is a wide range of prices quoted for private label CMOs among independent third party pricing services and this range reflects the significant judgment being exercised over the assumptions and variables that determine the pricing of such securities. We consider this subjectivity to be a significant unobservable input and have concluded that the covered private label CMOs should be categorized as a Level 3 measured asset. Our fair value estimate was based on prices provided to us by a nationally recognized pricing service which we also use to determine the fair value of the majority of our securities portfolio. We determined the reasonableness of the fair values by reviewing assumptions at the individual security level about prepayment, default expectations, estimated severity loss factors, and discount rates, all of which are not directly observable in the market. Significant changes in default expectations, severity loss factors, or discount rates, which occur in unison or in isolation, would result in different fair value measurements.
FHLB stock. Investments in FHLB stock are recorded at cost and measured for impairment quarterly. Ownership of FHLB stock is restricted to member banks and the securities do not have a readily determinable market value. Purchases and sales of these securities are at par value with the issuer. The fair value of investments in FHLB stock is equal to the carrying amount.
Non-PCI loans and leases. As Non-PCI loans and leases are not measured at fair value, the following discussion relates to estimating the fair value disclosures under ASC Topic 825. Fair values are estimated for portfolios of loans and leases with similar financial characteristics. Loans are segregated by type and further segmented into fixed and variable rate interest terms by credit risk categories. The fair value estimates do not take into consideration the value of the loan portfolio in the event the loans are sold outside the parameters of normal operating activities. The fair value of performing fixed-rate loans is estimating by discounting scheduled cash flows through the estimated maturity using estimated market prepayment speeds. The fair value of equipment leases is estimated by discounting scheduled lease and expected lease residual cash flows over their remaining term. The estimated market discount rates used for performing fixed-rate loans and equipment leases are current market rates for instruments with similar risk and similar terms. The fair value of performing variable-rate loans is estimated by discounting scheduled cash flows through the next repricing date. As these loans reprice frequently at market rates and the credit risk is not considered to be greater than normal, the market value is typically close to the carrying amount of these loans. These methods and assumptions are not based on the exit price concept of fair value.
Impaired Non‑PCI loans. Nonaccrual loans and performing restructured loans are considered impaired for reporting purposes and are measured and recorded at fair value on a non‑recurring basis. Nonaccrual Non‑PCI loans with an unpaid principal balance over $250,000 and all performing restructured loans are reviewed individually for the amount of impairment, if any. Nonaccrual Non‑PCI loans with a net book balance less than $250,000 may not be individually assessed for impairment but may instead be reserved for under the general reserve component of our allowance for credit losses.
To the extent a loan is collateral dependent, we measure such impaired loan based on the estimated fair value of the underlying collateral. The fair value of each loan’s collateral is generally based on estimated market prices from an independently prepared appraisal, which is then adjusted for the cost related to liquidating such collateral; such valuation inputs result in a nonrecurring fair value measurement that is categorized as a Level 2 measurement. The Level 2 measurement is based on appraisals obtained within the last 12 months and for which a charge‑off was recognized or a change in the specific valuation allowance was made during the three months ended March 31, 2015.
When adjustments are made to an appraised value to reflect various factors such as the age of the appraisal or known changes in the market or the collateral, such valuation inputs are considered unobservable and the fair value measurement is categorized as a Level 3 measurement. The impaired loans categorized as Level 3 also include unsecured loans and other secured loans whose fair values are based significantly on unobservable inputs such as the strength of a guarantor, including an SBA government guarantee, cash flows discounted at the effective loan rate, and management’s judgment.
The impaired Non‑PCI loan balances shown in the tables on page 33 as measured on a non-recurring basis represent those nonaccrual and restructured loans for which impairment was recognized during the three months ended March 31, 2015. The amounts shown as net losses include the impairment recognized during the three months ended March 31, 2015, for the loan balances shown. Of the $139.3 million of nonaccrual Non-PCI loans at March 31, 2015, $24.5 million were written down to their collateral fair values through charge‑offs during the three months ended March 31, 2015.
Investments that do not have readily determinable fair values. Other investments accounted for under the cost or equity methods of accounting are carried at fair value on a nonrecurring basis to the extent that they are determined to be other-than-temporarily impaired during the period. As there is rarely an observable price or market for such investments, we determine fair value using internally developed models. Our models utilize industry valuation benchmarks, such as multiples of net revenue or earnings before interest, taxes and amortization ("EBITA"), to determine a value for the underlying enterprise. We may also reduce the value determined by the model due to illiquidity or other investee-specific characteristics which may affect the fair value. Significant decreases to these valuation benchmarks would result in significant decreases in the estimated fair values. We reduce this value by the value of debt outstanding to arrive at an estimated equity value of the enterprise. When an external event such as a purchase transaction, public offering or subsequent equity sale occurs, the pricing indicated by the external event is used to corroborate our internal valuation. Fair value measurements related to these investments are typically classified within Level 3 of the fair value hierarchy.
Other real estate owned ("OREO"). The fair value of foreclosed real estate is generally based on the lower of estimated market prices from independently prepared current appraisals or executed sales contracts with buyers, less estimated costs to sell; such valuation inputs result in a fair value measurement that is categorized as a Level 2 measurement on a nonrecurring basis. As a matter of policy, appraisals are required annually and may be updated more frequently as circumstances require in the opinion of management. The Level 2 measurement for OREO is based on appraisals obtained within the last 12 months and for which a write‑down was recognized during the three months ended March 31, 2015.
When a current appraised value is not available or management determines the fair value of the collateral is determined to be less than the appraised value as a result of known changes in the market or the collateral and there is no observable market price, such valuation inputs result in a fair value measurement that is categorized as a Level 3 measurement. To the extent a purchase offer or reduced listing price represents a significant discount to an observable market price, such valuation input would result in a fair value measurement that is also considered a Level 3 measurement. The OREO losses disclosed are write‑downs based on either a recent appraisal obtained after foreclosure or an accepted purchase offer by an independent third party received after foreclosure.
Deposits. Deposits are carried at historical cost. The fair value of deposits with no stated maturity, such as noninterest‑bearing demand deposits, interest checking, money market, and savings accounts, is equal to the amount payable on demand as of the balance sheet date and considered Level 2. The fair value of time deposits is based on the discounted value of contractual cash flows and considered Level 2. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. No value has been separately assigned to the Company’s long‑term relationships with its deposit customers, such as a core deposit intangible.
Borrowings. Borrowings include overnight FHLB advances and other fixed‑rate term borrowings. Borrowings are carried at amortized cost. The fair value of overnight FHLB advances is equal to the carrying value and considered Level 1. The fair value of fixed‑rate borrowings is calculated by discounting scheduled cash flows through the estimated maturity dates or call dates, if applicable, using estimated market discount rates that reflect current rates offered for borrowings with similar remaining maturities and characteristics and are considered Level 2.
Subordinated debentures. Subordinated debentures are carried at amortized cost. The fair value of subordinated debentures with variable rates is determined using a market discount rate on the expected cash flows.
Derivative assets and liabilities. Derivatives are carried at fair value on a recurring basis and primarily relate to forward exchange contracts which we enter into to manage foreign exchange risk. Our derivatives are principally traded in over-the-counter markets where quoted market prices are not readily available. Instead, the fair value of derivatives is estimated using market observable inputs such as foreign exchange forward rates, interest rate yield curves, volatilities and basis spreads. We also consider counterparty credit risk in valuing our derivatives. We typically classify our derivatives in Level 2.
Commitments to extend credit. The majority of our commitments to extend credit carry current market interest rates if converted to loans. Because these commitments are generally unassignable by either the borrower or us, they only have value to the borrower and us. The estimated fair value approximates the recorded deferred fee amounts and is excluded from the table above because it is not material.
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 conservative 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 March 31, 2015, the amounts that will actually be realized or paid at settlement or maturity of the instruments could be significantly different.

Earnings_Per_Share_Earnings_pe

Earnings Per Share Earnings per share (Notes)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	The following table presents the computations of basic and diluted net earnings per share for the periods indicated:
		Three Months Ended
		31-Mar-15			31-Dec-14			31-Mar-14
		(Dollars in thousands, except per share data)
	Basic earnings per share:
	Net earnings from continuing operations	$	73,079		$	71,057		$	25,905
	Less: earnings allocated to unvested restricted stock(1)	(819		)	(810		)	(500		)
	Net earnings from continuing operations allocated to common shares	72,260			70,247			25,405
	Net (loss) earnings from discontinued operations allocated to common shares	—			(57		)	(804		)
	Net earnings allocated to common shares	$	72,260		$	70,190		$	24,601
	Weighted-average basic shares and unvested restricted stock outstanding	103,035			103,045			45,799
	Less: weighted-average unvested restricted stock outstanding	(1,122		)	(1,132		)	(1,148		)
	Weighted-average basic shares outstanding	101,913			101,913			44,651
	Basic earnings per share:
	Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
	Net loss from discontinued operations	—			—			(0.02		)
	Net earnings	$	0.71		$	0.69		$	0.55
	Diluted earnings per share:
	Net earnings from continuing operations allocated to common shares	$	72,260		$	70,247		$	25,405
	Net (loss) earnings from discontinued operations allocated to common shares	—			(57		)	(804		)
	Net earnings allocated to common shares	$	72,260		$	70,190		$	24,601
	Weighted-average basic shares outstanding	101,913			101,913			44,651
	Diluted earnings per share:
	Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
	Net loss from discontinued operations	—			—			(0.02		)
	Net earnings	$	0.71		$	0.69		$	0.55
	________________________
	-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_Plans

Stock Based Compensation Plans (Notes)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments	Note 13. 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 March 31, 2015, 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. The authorized amount includes 10,686,565 shares that were added to the 2003 Plan as a result of the CapitalSource Inc. merger. Such shares were available for grant under the former CapitalSource Inc. Equity Incentive Plan and remain available for: (a) former employees of CapitalSource Bank who remain employed with the Company, and (b) newly hired employees of the Company. As of March 31, 2015, there were 13,510,779 shares available for grant under the 2003 Plan, of which 10,082,099 shares related to those added from the CapitalSource Inc. merger.
	Restricted Stock
	At March 31, 2015, there were 1,129,445 shares of unvested time‑based restricted common stock outstanding. The awarded shares of time‑based restricted common stock vest over a service period of three to four years from the date of the grant. The time-based restricted common stock vests immediately upon the death of an employee.
	Compensation expense related to time‑based restricted stock awards 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. Restricted stock amortization totaled $3.1 million, $2.8 million, and $1.6 million for the three months ended March 31, 2015, December 31, 2014 and March 31, 2014. Such amounts are included in "Compensation expense" on the accompanying condensed consolidated statements of earnings.
	The amount of unrecognized compensation expense related to all unvested restricted stock as of March 31, 2015 totaled $34.6 million.

Business_Segment

Business Segment	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Data	Note 14. Business Segments
	The Company’s reportable segments consist of “Community Banking," “National Lending,” and “Other.” The Community Banking and National Lending segments include all of the operations of Pacific Western Bank. The Other segment consists of holding company and non-bank subsidiary operations, and intercompany eliminations.
	As a result of the CapitalSource Inc. merger, the Bank established the CapitalSource Division, which we also refer to as the National Lending segment. The National Lending segment includes the lending operations gained through the CapitalSource Inc. merger, Pacific Western Equipment Finance, and the CapitalSource Business Finance Group (formerly BFI Business Finance and First Community Financial). We reorganized our asset-based lending and leasing operations when we established the CapitalSource Division.
	The CapitalSource Division lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans, and cash flow loans and providing real estate investment firms real estate loans secured by various property types. The CapitalSource Division’s loan and lease origination efforts are conducted through offices located in Chevy Chase, Maryland; Los Angeles and San Jose, California; Phoenix, Arizona; St. Louis, Missouri; Denver, Colorado; Chicago, Illinois; New York, New York; and Midvale, Utah.
	The Community Banking segment includes the operations of Pacific Western Bank, excluding the CapitalSource Division, and includes lending and deposit gathering activities conducted primarily through its California-based branch offices and the Bank’s treasury management function and corporate overhead.
	The Other segment consists of holding company operations which result in expenses principally for compensation, facilities, professional services, interest on subordinated debentures, and the non-bank subsidiary operations including interest income from a loan portfolio and related loan servicing expense.
	The accounting policies of the reported segments are the same as those of the Company described in Note 1, "Nature of Operations and Summary of Significant Accounting Policies," of our Form 10-K. Transactions between segments consist primarily of borrowed funds and expense allocations for interest, deposit gathering, corporate overhead and credit loss provisions. Intersegment interest expense is allocated from the Community Banking segment to the National Lending segment based upon National Lending’s average earning assets, net of a capital allocation, and the Bank’s total cost of deposits. The Community Banking segment further allocates to the National Lending segment noninterest expense for deposit gathering and maintenance costs and the Bank’s corporate overhead. The provision for credit losses is allocated based on actual charge‑offs for the period as well as net portfolio growth and credit quality trends. All costs associated with investing the Bank’s excess liquidity and acquisition, integration and reorganization costs are housed in the Community Banking segment. Noninterest income and noninterest expense, including lending and loan servicing activity, directly attributable to a segment are assigned to such segment.
	The following tables present information regarding our business segments as of and for the periods indicated:
		31-Mar-15
		Community			National						Consolidated
	Balance Sheet Data:	Banking			Lending			Other			Company
		(In thousands)
	Loans and leases, net of deferred fees	$	3,349,928		$	8,898,843		$	23,395		$	12,272,166
	Allowance for loan and lease losses	(40,906		)	(51,472		)	—			(92,378		)
	Total loans and leases, net	$	3,309,022		$	8,847,371		$	23,395		$	12,179,788
	Goodwill(1)	$	333,979		$	1,394,401		$	—		$	1,728,380
	Core deposit and customer relationship intangibles, net	14,918			785			—			15,703
	Total assets	6,553,028			9,905,563			185,349			16,643,940
	Total deposits(2)	12,252,851			35,847			(354,523		)	11,934,175
	________________________
	-1	The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.
	-2	The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.
		31-Mar-14
		Community			National						Consolidated
	Balance Sheet Data:	Banking			Lending			Other			Company
		(In thousands)
	Loans and leases, net of deferred fees	$	3,707,308		$	453,759		$	—		$	4,161,067
	Allowance for loan and lease losses	(74,833		)	(6,347		)	—			(81,180		)
	Total loans and leases, net	$	3,632,475		$	447,412		$	—		$	4,079,887
	Goodwill	$	183,065		$	25,678		$	—		$	208,743
	Core deposit and customer relationship intangibles, net	14,139			1,745			—			15,884
	Total assets	5,990,162			517,126			10,565			6,517,853
	Total deposits(1)	5,415,691			—			(46,283		)	5,369,408
	________________________
	-1	The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.
		Three Months Ended March 31, 2015
		Community			National						Consolidated
	Results of Operations:	Banking			Lending			Other			Company
		(In thousands)
	Interest income	$	62,956		$	151,219		$	139		$	214,314
	Interest expense	(10,661		)	(53		)	(4,525		)	(15,239		)
	Intersegment interest income (expense)	6,721			(6,721		)	—			—
	Net interest income (expense)	59,016			144,445			(4,386		)	199,075
	Negative provision (provision) for credit losses	8,064			(24,406		)	(92		)	(16,434		)
	Gain on securities	3,275			—			—			3,275
	FDIC loss sharing expense	(4,399		)	—			—			(4,399		)
	Other noninterest income	9,575			5,142			7,278			21,995
	Total noninterest income	8,451			5,142			7,278			20,871
	Foreclosed assets (expense) income, net	(44		)	(61		)	(231		)	(336		)
	Intangible asset amortization	(1,389		)	(112		)	—			(1,501		)
	Acquisition, integration and reorganization costs	(1,890		)	—			(110		)	(2,000		)
	Other noninterest expense	(55,205		)	(22,837		)	(2,481		)	(80,523		)
	Total noninterest expense	(58,528		)	(23,010		)	(2,822		)	(84,360		)
	Intersegment noninterest income (expense)	26,563			(26,563		)	—			—
	Total noninterest expense - adjusted	(31,965		)	(49,573		)	(2,822		)	(84,360		)
	Earnings (loss) before taxes	43,566			75,608			(22		)	119,152
	Income tax (expense) benefit	(16,873		)	(29,282		)	82			(46,073		)
	Net earnings (loss)	$	26,693		$	46,326		$	60		$	73,079
		Three Months Ended December 31, 2014
		Community			National						Consolidated
	Results of Operations:	Banking			Lending			Other			Company
		(In thousands)
	Interest income	$	64,967		$	144,546		$	183		$	209,696
	Interest expense	(10,069		)	(46		)	(4,598		)	(14,713		)
Intersegment interest income (expense)	6,173			(6,173		)	—			—
Net interest income (expense)	61,071			138,327			(4,415		)	194,983
Negative provision (provision) for credit losses	9,753			(11,816		)	—			(2,063		)
FDIC loss sharing expense	(4,360		)	—			—			(4,360		)
Other noninterest income	7,025			7,330			2,708			17,063
Total noninterest (expense) income	2,665			7,330			2,708			12,703
Foreclosed assets expense, net	(2,286		)	(18		)	366			(1,938		)
Intangible asset amortization	(1,507		)	(112		)	—			(1,619		)
Acquisition, integration and reorganization costs	(7,381		)	—			—			(7,381		)
Other noninterest expense	(51,605		)	(24,526		)	(4,236		)	(80,367		)
Total noninterest expense	(62,779		)	(24,656		)	(3,870		)	(91,305		)
Intersegment noninterest income (expense)	21,953			(21,953		)	—			—
Total noninterest expense - adjusted	(40,826		)	(46,609		)	(3,870		)	(91,305		)
Earnings (loss) from continuing operations before taxes	32,663			87,232			(5,577		)	114,318
Income tax (expense) benefit	(13,651		)	(34,781		)	5,171			(43,261		)
Net earnings (loss) from continuing operations	19,012			52,451			(406		)	71,057
Loss from discontinued operations before taxes	(105		)	—			—			(105		)
Income tax benefit	47			—			—			47
Net loss from discontinued operations	(58		)	—			—			(58		)
Net earnings (loss)	$	18,954		$	52,451		$	(406	)	$	70,999
	Three Months Ended March 31, 2014
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	77,595		$	10,765		$	—		$	88,360
Interest Expense	(1,227		)	(77		)	(1,041		)	(2,345		)
Intersegment interest income (expense)	222			(222		)	—			—
Net interest income (expense)	76,590			10,466			(1,041		)	86,015
Negative provision (provision) for credit losses	826			(182		)	—			644
Gain on securities	4,752			—			—			4,752
FDIC loss sharing expense, net	(11,430		)	—			—			(11,430		)
Other noninterest income	6,897			4,445			27			11,369
Total noninterest income	219			4,445			27			4,691
Foreclosed assets expense, net	1,861			—			—			1,861
Intangible asset amortization	(1,191		)	(173		)	—			(1,364		)
Acquisition, integration and reorganization costs	(2,200		)	—			—			(2,200		)
Other noninterest expense	(40,285		)	(6,573		)	(1,603		)	(48,461		)
Total noninterest expense	(41,815		)	(6,746		)	(1,603		)	(50,164		)
Earnings (loss) from continuing operations before taxes	35,820			7,983			(2,617		)	41,186
Income tax (expense) benefit	(13,039		)	(3,331		)	1,089			(15,281		)
Net earnings (loss) from continuing operations	22,781			4,652			(1,528		)	25,905
Loss from discontinued operations before taxes	(1,413		)	—			—			(1,413		)
Income tax benefit	588			—			—			588
Net loss from discontinued operations	(825		)	—			—			(825		)
Net earnings (loss)	$	21,956		$	4,652		$	(1,528	)	$	25,080

Recently_Issued_Accounting_Sta

Recently Issued Accounting Standards (Notes)	3 Months Ended
	Mar. 31, 2015
Recently Issued Accounting Standards [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles	Note 15.  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 will be effective for annual and interim periods beginning after December 15, 2016. Early application is not permitted. 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. The Company is evaluating the effect that ASU 2014-09 will have on its financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.
	In June 2014, the FASB issued ASU 2014-12, "Compensation-Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period." ASU 2014-12 will be effective for annual and interim periods beginning after December 15, 2015. ASU 2014-12 applies to all reporting entities that grant their employees share-based payments in which the terms of the award provide for a performance target that affects vesting could be achieved after the requisite service period. That is the case when an employee is eligible to retire or otherwise terminate employment before the end of the period in which a performance target (for example, an initial public offering or a profitability target) could be achieved and still be eligible to vest in the award if and when the performance target is achieved. We do not currently have outstanding performance-based awards and, as a result, ASU 2014-12 would not impact our financial statements and its related disclosures.
	In August 2014, the FASB issued ASU 2014-14, "Receivables - Troubled Debt Restructuring by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure." ASU 2014-14 requires that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) the loan has a government guarantee that is not separable from the loan before foreclosure; (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim; and (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. ASU 2014-14 is effective for public business entities for reporting periods, including interim periods, beginning after December 15, 2014. ASU 2014-14 did not impact the Company's financial statements and related disclosures.
	In January 2015, the FASB issued ASU 2015-01, "Income Statement - Extraordinary and Unusual Items (Subtopic 225-20): Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items," which eliminates the concept of extraordinary items from U.S. GAAP as part of its simplification initiative. Under ASU 2015-01, an entity will no longer separate out an extraordinary item from the results of ordinary operations and separately present this extraordinary item on its income statement, nor will related income tax and earnings-per-share data applicable to an extraordinary item need to be disclosed. Despite these simplifications, ASU 2015-01 does not affect disclosure guidance for events or transactions that are unusual in nature or infrequent in their occurrence. ASU 2015-01 is effective for annual periods beginning after December 15, 2015, and interim periods within those annual periods. The Company does not expect the effect of ASU 2015-01 to have a material impact on its financial statements and related disclosures.
	In February 2015, the FASB issued ASU 2015-02, "Consolidation (Topic 810) - Amendments to the Consolidation Analysis," which changes the way reporting enterprises evaluate whether (a) they should consolidate limited partnerships and similar entities, (b) fees paid to a decision maker or service provider are variable interests in a variable interest entity (VIE), and (c) variable interests in a VIE held by related parties of the reporting enterprise require the reporting enterprise to consolidate the VIE. It also eliminates the VIE consolidation model based on majority exposure to variability that applied to certain investment companies and similar entities. ASU 2015-2 is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. The Company does not expect the effect of ASU 2015-02 to have a material impact on its financial statements and related disclosures.

Subsequent_Events_Notes

Subsequent Events (Notes)	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Note 16. Subsequent Events
	We have evaluated events that have occurred subsequent to March 31, 2015 and have concluded there are no subsequent events that would require recognition in the accompanying consolidated financial statements.

Acquisitions_Acquisitions_Tabl

Acquisitions Acquisitions Tables	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition	The following assets acquired and liabilities assumed of CapitalSource Inc. are presented at estimated fair value as of its acquisition date:
		Acquisition and Date Acquired
		CapitalSource Inc.
		7-Apr-14
		(In thousands)
	Assets Acquired:
	Cash and due from banks	$	768,553
	Interest‑earning deposits in financial institutions	60,612
	Investment securities available‑for‑sale	382,797
	FHLB stock	46,060
	Loans and leases	6,877,427
	Equipment leased to others under operating leases	160,015
	Premises and equipment	12,663
	Foreclosed assets	6,382
	Income tax assets	304,856
	Goodwill	1,526,282
	Core deposit and customer relationship intangibles	6,720
	Other assets(1)	582,985
	Total assets acquired	$	10,735,352
	Liabilities Assumed:
	Noninterest‑bearing deposits	$	4,631
	Interest‑bearing deposits	6,236,419
	Other borrowings	992,109
	Subordinated debentures	300,918
	Accrued interest payable and other liabilities	124,087
	Total liabilities assumed	$	7,658,164
	Total consideration paid	$	3,077,188
	Summary of consideration:
	Cash paid	$	483,118
	PacWest common stock issued	2,594,070
	Total	$	3,077,188
	___________________
	-1	Includes a $484 million receivable for securities sales proceeds.

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets Goodwill and Other Intangilbe Assets (Tables)	3 Months Ended
	Mar. 31, 2015
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, 2014	$	1,720,479
	To adjust acquired CapitalSource Inc. deferred tax assets	7,901
	Balance, March 31, 2015	$	1,728,380
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
		March 31,			December 31,			March 31,
		2015			2014			2014
		(In thousands)
	Gross Amount of CDI and CRI:
	Balance, end of period	$	53,090		$	53,090		$	48,963
	Accumulated Amortization:
	Balance, beginning of period	(35,886		)	(34,267		)	(31,715		)
	Amortization	(1,501		)	(1,619		)	(1,364		)
	Balance, end of period	(37,387		)	(35,886		)	(33,079		)
	Net CDI and CRI, end of period	$	15,703		$	17,204		$	15,884

Investments_Tables

Investments (Tables)	3 Months Ended
	Mar. 31, 2015
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:
		31-Mar-15											31-Dec-14
		Amortized Cost		Gross Unrealized Gains			Gross Unrealized Losses			Fair Value			Amortized Cost		Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
		(In thousands)
	Residential mortgage-backed securities:
	Government agency and
	government-sponsored enterprise
	pass-through securities	$	439,696	$	19,327		$	(131	)	$	458,892		$	515,902	$	20,142		$	(372	)	$	535,672
	Government agency and
	government-sponsored enterprise
	collateralized mortgage obligations	269,766		6,909			(451		)	276,224			275,513		3,513			(1,080		)	277,946
	Covered private label collateralized
	mortgage obligations	26,496		7,014			(66		)	33,444			26,889		7,153			(95		)	33,947
	Other private label collateralized
	mortgage obligations	9,645		52			(47		)	9,650			10,961		46			(93		)	10,914
	Municipal securities	579,344		15,708			(2,199		)	592,853			521,499		15,899			(1,282		)	536,116
	Corporate debt securities	47,485		683			(423		)	47,745			110,074		597			(562		)	110,109
	Collateralized loan obligations	112,883		922			—			113,805			—		—			—			—
	Government-sponsored enterprise debt
	securities	36,249		1,156			—			37,405			36,232		525			—			36,757
	Other securities	25,451		34			(94		)	25,391			25,801		33			(118		)	25,716
	Total	$	1,547,015	$	51,805		$	(3,411	)	$	1,595,409		$	1,522,871	$	47,908		$	(3,602	)	$	1,567,177
Unrealized losses on investment securities	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:
		31-Mar-15
		Less Than 12 Months					12 Months or More						Total
		Fair Value		Gross Unrealized Losses			Fair Value			Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
		(In thousands)
	Residential mortgage-backed securities:
	Government agency and government-
	sponsored enterprise pass-through
	securities	$	5,031	$	(42	)	$	10,085		$	(89	)	$	15,116	$	(131	)
	Government agency and government-
	sponsored enterprise collateralized
	mortgage obligations	—		—			14,403			(451		)	14,403		(451		)
	Covered private label collateralized
	mortgage obligations	726		(6		)	643			(60		)	1,369		(66		)
	Other private label collateralized
	mortgage obligations	1,206		(46		)	360			(1		)	1,566		(47		)
	Municipal securities	112,361		(1,277		)	38,687			(922		)	151,048		(2,199		)
	Corporate debt securities	25,104		(423		)	—			—			25,104		(423		)
	Other securities	6,453		(72		)	10,020			(22		)	16,473		(94		)
	Total	$	150,881	$	(1,866	)	$	74,198		$	(1,545	)	$	225,079	$	(3,411	)
		31-Dec-14
		Less Than 12 Months					12 Months or More						Total
		Fair Value		Gross Unrealized Losses			Fair Value			Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
		(In thousands)
	Residential mortgage-backed securities:
	Government agency and government-
	sponsored enterprise pass-through
	securities	$	10,711	$	(13	)	$	27,100		$	(359	)	$	37,811	$	(372	)
	Government agency and government-
	sponsored enterprise collateralized
	mortgage obligations	23,908		(73		)	40,652			(1,007		)	64,560		(1,080		)
	Covered private label collateralized
	mortgage obligations	—		—			1,000			(95		)	1,000		(95		)
	Other private label collateralized
	mortgage obligations	1,618		(93		)	—			—			1,618		(93		)
	Municipal securities	11,854		(66		)	84,822			(1,216		)	96,676		(1,282		)
	Corporate debt securities	52,071		(547		)	10,131			(15		)	62,202		(562		)
	Other securities	6,440		(90		)	10,019			(28		)	16,459		(118		)
	Total	$	106,602	$	(882	)	$	173,724		$	(2,720	)	$	280,326	$	(3,602	)
Investments Classified by Contractual Maturity Date	The following table presents the contractual maturities of our available-for-sale securities portfolio based on amortized cost and carrying value as of the date indicated:
		31-Mar-15
		Amortized Cost		Estimated Fair Value
		(In thousands)
	Due in one year or less	$	18,358	$	18,538
	Due after one year through five years	76,173		76,515
	Due after five years through ten years	276,933		287,023
	Due after ten years	1,175,551		1,213,333
	Total securities available-for-sale	$	1,547,015	$	1,595,409
Investment Income	The following table presents the composition of our interest income on investment securities for the periods indicated:
		Three Months Ended
		31-Mar-15		31-Dec-14			31-Mar-14
		(In thousands)
	Taxable interest	$	7,473	$	7,697		$	6,920
	Non-taxable interest	3,894		3,593			3,328
	Dividend income	828		915			575
	Total interest income on investment securities	$	12,195	$	12,205		$	10,823

Loans_and_Credit_Quality_Table

Loans and Credit Quality (Tables)	3 Months Ended
	Mar. 31, 2015
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:
		March 31, 2015												December 31, 2014
		Non-PCI												Non-PCI
		Loans				PCI								Loans				PCI
		and Leases				Loans				Total				and Leases				Loans				Total
		(In thousands)
	Real estate mortgage	$	5,601,937			$	226,502			$	5,828,439			$	5,350,827			$	256,489			$	5,607,316
	Real estate construction	331,108				1,897				333,005				309,162				6,924				316,086
	Commercial	6,021,282				25,664				6,046,946				5,852,420				27,155				5,879,575
	Consumer	93,619				283				93,902				101,423				284				101,707
	Total gross loans and leases	12,047,946				254,346				12,302,292				11,613,832				290,852				11,904,684
	Deferred fees and costs	(30,065		)		(61		)		(30,126		)		(22,191		)		(61		)		(22,252		)
	Total loans and leases, net of deferred fees	12,017,881				254,285				12,272,166				11,591,641				290,791				11,882,432
	Allowance for loan and lease losses	(79,680		)		(12,698		)		(92,378		)		(70,456		)		(13,999		)		(84,455		)
	Total net loans and leases	$	11,938,201			$	241,587			$	12,179,788			$	11,521,185			$	276,792			$	11,797,977
Allowance for Loan 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 March 31, 2015
		Real Estate Mortgage				Real Estate Construction				Commercial				Consumer				Total Non-PCI				Total 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	(1,453		)		—				(8,395		)		(63		)		(9,911		)		(579		)	(10,490		)
	Recoveries	1,295				632				410				194				2,531				11			2,542
	Provision (negative provision)	5,972				(2,707		)		13,921				(582		)		16,604				(733		)	15,871
	Balance, end of period	$	30,911			$	2,173			$	45,794			$	802			$	79,680			$	12,698		$	92,378
	Amount of the allowance applicable to loans and leases:
	Individually evaluated for impairment	$	1,500			$	55			$	10,493			$	178			$	12,226
	Collectively evaluated for impairment	$	29,411			$	2,118			$	35,301			$	624			$	67,454
	Acquired loans with deteriorated credit quality																					$	12,698
	Loan and Leases:
	Ending balance	$	5,588,430			$	328,709			$	6,007,067			$	93,675			$	12,017,881			$	254,285		$	12,272,166
	The ending balance of the loan and lease portfolio is composed of loans and leases:
	Individually evaluated for impairment	$	59,733			$	8,639			$	103,208			$	3,729			$	175,309
	Collectively evaluated for impairment	$	5,528,697			$	320,070			$	5,903,859			$	89,946			$	11,842,572
	Acquired loans with deteriorated credit quality																					$	254,285
		Three Months Ended March 31, 2014
		Real Estate Mortgage				Real Estate Construction				Commercial				Consumer				Total Non-PCI				Total PCI			Total
		(In thousands)
	Allowance for loan and lease losses:
	Balance, beginning of period	$	26,078			$	4,298			$	26,921			$	2,944			$	60,241			$	21,793		$	82,034
	Charge-offs	(94		)		—				(1,441		)		(15		)		(1,550		)		—			(1,550		)
	Recoveries	261				24				377				27				689				51			740
	Provision (negative provision)	(1,893		)		(219		)		1,883				829				600				(644		)	(44		)
	Balance, end of period	$	24,352			$	4,103			$	27,740			$	3,785			$	59,980			$	21,200		$	81,180
	Amount of the allowance applicable to loans and leases:
	Individually evaluated for impairment	$	2,690			$	251			$	5,337			$	387			$	8,665
	Collectively evaluated for impairment	$	21,662			$	3,852			$	22,403			$	3,398			$	51,315
	Acquired loans with deteriorated credit quality																					$	21,200
	Loan and Leases:
	Ending balance	$	2,320,554			$	240,073			$	1,201,142			$	66,782			$	3,828,551			$	332,516		$	4,161,067
	The ending balance of the loan and lease portfolio is composed of loans and leases:
	Individually evaluated for impairment	$	58,532			$	12,926			$	17,792			$	3,972			$	93,222
	Collectively evaluated for impairment	$	2,262,022			$	227,147			$	1,183,350			$	62,810			$	3,735,329
	Acquired loans with deteriorated credit quality																					$	332,516
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.
		31-Mar-15												December 31, 2014
		Classified				Nonclassified				Total				Classified				Nonclassified				Total
		(In thousands)
	Real estate mortgage:
	Hospitality	$	16,928			$	595,161			$	612,089			$	17,761			$	542,458			$	560,219
	SBA	10,919				377,857				388,776				11,141				364,786				375,927
	Other	69,859				4,517,706				4,587,565				68,084				4,336,330				4,404,414
	Total real estate mortgage	97,706				5,490,724				5,588,430				96,986				5,243,574				5,340,560
	Real estate construction:
	Residential	398				121,918				122,316				402				96,326				96,728
	Commercial	1,456				204,937				206,393				3,346				207,061				210,407
	Total real estate construction	1,854				326,855				328,709				3,748				303,387				307,135
	Commercial:
	Collateralized	21,265				373,123				394,388				22,433				416,754				439,187
	Unsecured	1,267				142,047				143,314				1,323				130,501				131,824
	Asset-based	11,304				1,708,473				1,719,777				11,547				1,783,304				1,794,851
	Cash flow	105,763				2,687,421				2,793,184				83,321				2,376,530				2,459,851
	Equipment finance	86,938				827,078				914,016				15,973				953,516				969,489
	SBA	3,128				39,260				42,388				3,207				44,054				47,261
	Total commercial	229,665				5,777,402				6,007,067				137,804				5,704,659				5,842,463
	Consumer	3,957				89,718				93,675				4,073				97,410				101,483
	Total Non-PCI loans and leases	$	333,182			$	11,684,699			$	12,017,881			$	242,611			$	11,349,030			$	11,591,641
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables	The following table presents the composition of our impaired loans and leases as of the dates indicated:
		March 31, 2015												December 31, 2014
						Performing				Total								Performing				Total
		Nonaccrual				Restructured				Impaired				Nonaccrual				Restructured				Impaired
		Loans/Leases				Loans				Loans/Leases				Loans/Leases				Loans				Loans/Leases
		(In thousands)
	Real estate mortgage	$	37,335			$	22,398			$	59,733			$	37,612			$	20,245			$	57,857
	Real estate construction	832				7,807				8,639				1,559				8,996				10,555
	Commercial	97,693				5,515				103,208				40,965				5,744				46,709
	Consumer	3,474				255				3,729				3,485				259				3,744
	Total	$	139,334			$	35,975			$	175,309			$	83,621			$	35,244			$	118,865
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period	The following table summarizes the changes in the carrying amount of PCI loans and accretable yield on those loans for the period indicated:
		Carrying Amount				Accretable Yield
		(In thousands)
	Balance, December 31, 2014	$	276,792			$	(106,856	)
	Accretion	10,183				10,183
	Payments received	(46,121		)		—
	Increase in expected cash flows, net	—				(6,190		)
	Negative provision for credit losses	733				—
	Balance, March 31, 2015	$	241,587			$	(102,863	)
Non Purchased Credit Impaired Loans and Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
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:
		31-Mar-15
		30-89 Days Past Due				90 or More				Total Past Due				Current				Total
						Days Past Due
		(In thousands)
	Real estate mortgage:
	Hospitality	$	—			$	—			$	—			$	612,089			$	612,089
	SBA	5,582				5,487				11,069				377,707				388,776
	Other	6,234				5,319				11,553				4,576,012				4,587,565
	Total real estate mortgage	11,816				10,806				22,622				5,565,808				5,588,430
	Real estate construction:
	Residential	—				—				—				122,316				122,316
	Commercial	—				—				—				206,393				206,393
	Total real estate construction	—				—				—				328,709				328,709
	Commercial:
	Collateralized	1,782				424				2,206				392,182				394,388
	Unsecured	—				16				16				143,298				143,314
	Asset-based	—				—				—				1,719,777				1,719,777
	Cash flow	—				—				—				2,793,184				2,793,184
	Equipment finance	23,409				—				23,409				890,607				914,016
	SBA	788				1,362				2,150				40,238				42,388
	Total commercial	25,979				1,802				27,781				5,979,286				6,007,067
	Consumer	9				3,196				3,205				90,470				93,675
	Total Non-PCI loans and leases	$	37,804			$	15,804			$	53,608			$	11,964,273			$	12,017,881
		31-Dec-14
		30-89 Days Past Due				90 or More				Total Past Due				Current				Total
						Days Past Due
		(In thousands)
	Real estate mortgage:
	Hospitality	$	—			$	—			$	—			$	560,219			$	560,219
	SBA	5,530				4,357				9,887				366,040				375,927
	Other	6,098				7,630				13,728				4,390,686				4,404,414
	Total real estate mortgage	11,628				11,987				23,615				5,316,945				5,340,560
	Real estate construction:
	Residential	—				—				—				96,728				96,728
	Commercial	—				715				715				209,692				210,407
	Total real estate construction	—				715				715				306,420				307,135
	Commercial:
	Collateralized	878				965				1,843				437,344				439,187
	Unsecured	69				45				114				131,710				131,824
	Asset-based	—				—				—				1,794,851				1,794,851
	Cash flow	—				232				232				2,459,619				2,459,851
	Equipment finance	6,525				366				6,891				962,598				969,489
	SBA	205				1,362				1,567				45,694				47,261
	Total commercial	7,677				2,970				10,647				5,831,816				5,842,463
	Consumer	101				3,146				3,247				98,236				101,483
	Total Non-PCI loans and leases	$	19,406			$	18,818			$	38,224			$	11,553,417			$	11,591,641
Financing Receivable Non Accrual And Performing	The following table presents our nonaccrual and performing Non‑PCI loans and leases by portfolio segment and class as of the dates indicated:
		31-Mar-15												31-Dec-14
		Nonaccrual				Performing				Total				Nonaccrual				Performing				Total
		(In thousands)
	Real estate mortgage:
	Hospitality	$	8,088			$	604,001			$	612,089			$	6,366			$	553,853			$	560,219
	SBA	10,919				377,857				388,776				11,141				364,786				375,927
	Other	18,328				4,569,237				4,587,565				20,105				4,384,309				4,404,414
	Total real estate mortgage	37,335				5,551,095				5,588,430				37,612				5,302,948				5,340,560
	Real estate construction:
	Residential	379				121,937				122,316				381				96,347				96,728
	Commercial	453				205,940				206,393				1,178				209,229				210,407
	Total real estate construction	832				327,877				328,709				1,559				305,576				307,135
	Commercial:
	Collateralized	3,601				390,787				394,388				5,450				433,737				439,187
	Unsecured	594				142,720				143,314				639				131,185				131,824
	Asset-based	4,159				1,715,618				1,719,777				4,574				1,790,277				1,794,851
	Cash flow	15,172				2,778,012				2,793,184				15,964				2,443,887				2,459,851
	Equipment finance	71,039				842,977				914,016				11,131				958,358				969,489
	SBA	3,128				39,260				42,388				3,207				44,054				47,261
	Total commercial	97,693				5,909,374				6,007,067				40,965				5,801,498				5,842,463
	Consumer	3,474				90,201				93,675				3,485				97,998				101,483
	Total Non-PCI loans and leases	$	139,334			$	11,878,547			$	12,017,881			$	83,621			$	11,508,020			$	11,591,641
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:
		31-Mar-15												31-Dec-14
		Recorded Investment				Unpaid Principal Balance				Related				Recorded Investment				Unpaid Principal Balance				Related
										Allowance												Allowance
		(In thousands)
	With An Allowance Recorded:
	Real estate mortgage:
	Hospitality	$	1,930			$	1,930			$	31			$	1,946			$	1,945			$	47
	SBA	—				—				—				—				—				—
	Other	12,986				13,169				1,469				9,136				9,233				646
	Real estate construction:
	Residential	759				759				41				763				763				46
	Commercial	403				401				14				1,128				4,934				23
	Commercial:
	Collateralized	4,811				5,486				3,497				4,630				5,246				3,771
	Unsecured	1,055				1,067				913				912				924				799
	Asset-based	47				157				47				137				247				137
	Cash flow	14,974				17,694				2,522				15,578				17,970				2,667
	Equipment finance	9,347				9,764				3,514				6,956				7,268				2,601
	SBA	—				—				—				—				—				—
	Consumer	383				386				178				143				142				37
	With No Related Allowance Recorded:
	Real estate mortgage:
	Hospitality	$	8,088			$	10,096			$	—			$	6,366			$	7,593			$	—
	SBA	10,919				15,030				—				11,141				14,708				—
	Other	25,810				39,548				—				29,268				40,643				—
	Real estate construction:
	Residential	20				19				—				21				19				—
	Commercial	7,457				7,571				—				8,643				8,749				—
	Commercial:
	Collateralized	3,324				4,234				—				5,566				6,877				—
	Unsecured	519				564				—				725				809				—
	Asset-based	4,111				5,220				—				4,436				5,415				—
	Cash flow	198				735				—				387				919				—
	Equipment finance	61,694				67,850				—				4,175				7,528				—
	SBA	3,128				4,762				—				3,207				4,920				—
	Consumer	3,346				3,506				—				3,601				3,768				—
	Total Non-PCI Loans and Leases With and Without an Allowance Recorded:
	Real estate mortgage	$	59,733			$	79,773			$	1,500			$	57,857			$	74,122			$	693
	Real estate construction	8,639				8,750				55				10,555				14,465				69
	Commercial	103,208				117,533				10,493				46,709				58,123				9,975
	Consumer	3,729				3,892				178				3,744				3,910				37
	Total	$	175,309			$	209,948			$	12,226			$	118,865			$	150,620			$	10,774
		Three Months Ended March 31,
		2015								2014
		Weighted Average				Interest				Weighted Average				Interest
		Balance(1)				Income				Balance(1)				Income
						Recognized								Recognized
		(In thousands)
	With An Allowance Recorded:
	Real estate mortgage:
	Hospitality	$	1,930			$	19			$	5,658			$	20
	SBA	—				—				1,092				15
	Other	12,783				136				16,174				119
	Real estate construction:
	Residential	759				4				774				4
	Commercial	403				5				5				—
	Commercial:
	Collateralized	4,646				33				3,765				6
	Unsecured	1,055				11				742				6
	Asset-based	47				—				304				—
	Cash flow	14,973				—				—				—
	Equipment finance	4,581				—				—				—
	SBA	—				—				919				10
Consumer	383				4				2,151				4
With No Related Allowance Recorded:
Real estate mortgage:
Hospitality	$	7,836			$	—			$	2,971			$	—
SBA	9,836				—				2,519				—
Other	24,219				80				23,549				63
Real estate construction:
Residential	20				—				—				—
Commercial	7,457				271				5,491				25
Commercial:
Collateralized	3,324				48				4,861				6
Unsecured	519				1				326				—
Asset-based	4,111				—				—				—
Cash flow	198				—				—				—
Equipment finance	7,537				—				220				—
SBA	3,128				45				3,132				2
Consumer	3,345				—				251				1
Total Non-PCI Loans and Leases With and Without an Allowance Recorded:
Real estate mortgage	$	56,604			$	235			$	51,963			$	217
Real estate construction	8,639				280				6,270				29
Commercial	44,119				138				14,269				30
Consumer	3,728				4				2,402				5
Total	$	113,090			$	657			$	74,904			$	281
_________________________
-1	For the loans and leases (excluding PCI loans) reported as impaired at March 31, 2015 and 2014, amounts were calculated based on the period of time such loans and leases were impaired during the reported period.
Troubled Debt Restructurings on Financing Receivables	The following table presents new troubled debt restructurings of Non-PCI loans for the periods indicated:
		Three Months Ended March 31, 2015											Three Months Ended March 31, 2014
	Troubled Debt Restructurings:	Number of Loans			Pre- Modification Outstanding Recorded Investment				Post-Modification Outstanding Recorded Investment				Number of Loans			Pre- Modification Outstanding Recorded Investment				Post-Modification Outstanding Recorded Investment
		(Dollars in thousands)
	Real estate mortgage:
	Other	14			$	6,074			$	5,886			4			$	2,515			$	2,515
	Real estate construction:
	Commercial	1			2,610				2,610				2			4,927				4,927
	Commercial:
	Collateralized	6			1,399				1,399				4			3,287				3,287
	Unsecured	1			195				195				2			38				38
	Cash flow	2			566				387				—			—				—
	Equipment finance	4			4,133				4,133				—			—				—
	SBA	1			—				—				1			238				238
	Consumer	1			91				91				1			124				124
	Total	30			$	15,068			$	14,701			14			$	11,129			$	11,129
	The following table presents troubled debt restructurings that subsequently defaulted for the periods indicated:
		Three Months Ended March 31,
		2015							2014
	Troubled Debt Restructurings	Number of			Recorded				Number of			Recorded
	That Subsequently Defaulted:	Loans			Investment(1)				Loans			Investment(1)
		(Dollars in thousands)
	Real estate mortgage - Other	2			$	1,519			—			$	—
	Commercial:
	Collateralized	1			385				2			559
	Unsecured	—			—				1			21
	Asset-based	—			—				1			301
	Total	3			$	1,904		-2	4			$	881		-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 March 31, 2015, and is net of charge-offs of $772,000.
	-3	Represents the balance at March 31, 2014, and there were no charge-offs.
Purchased Credit Impaired Loans and Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
CV of Loans Held for Investment by class by performing and nonperforming	The following table presents PCI loans by credit risk rating categories and portfolio segment as of the dates indicated. Nonclassified loans are those with a credit risk rating of either pass or special mention, while classified loans are those with a credit risk rating of either substandard or doubtful.
		31-Mar-15												31-Dec-14
		Classified				Nonclassified				Total				Classified				Nonclassified				Total
		(In thousands)
	Real estate mortgage	$	77,548			$	148,902			$	226,450			$	101,161			$	155,281			$	256,442
	Real estate construction	1,888				—				1,888				3,901				3,010				6,911
	Commercial	25,476				188				25,664				26,942				212				27,154
	Consumer	283				—				283				284				—				284
	Total PCI loans	$	105,195			$	149,090			$	254,285			$	132,288			$	158,503			$	290,791
Schedule of Accounts, Notes, Loans and Financing Receivable	The following table reflects the PCI loans by portfolio segment as of the dates indicated:
		March 31, 2015				December 31, 2014
		(In thousands)
	Real estate mortgage	$	268,777			$	299,660
	Real estate construction	2,540				7,743
	Commercial	31,185				32,904
	Consumer	326				332
	Total gross PCI loans	302,828				340,639
	Less:
	Discount	(48,543		)		(49,848		)
	Allowance for loan losses	(12,698		)		(13,999		)
	Total net PCI loans	$	241,587			$	276,792

Foreclosed_Assets_Foreclosed_A1

Foreclosed Assets Foreclosed Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract]
Other Real Estate and Foreclosed Assets	The following table summarizes foreclosed assets at the dates indicated:
	Property Type:	31-Mar-15			31-Dec-14
		(In thousands)
	Commercial real estate	$	1,036		$	2,449
	Construction and land development	18,942			24,759
	Multi‑family	4,964			4,823
	Single family residence	3,253			3,392
	Total other real estate owned, net	28,195			35,423
	Other foreclosed assets	7,745			8,298
	Total foreclosed assets, net(1)	$	35,940		$	43,721
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, 2014	$	43,721
	Foreclosures	394
	Provision for losses	(124		)
	Reductions related to sales	(8,051		)
	Balance, March 31, 2015	$	35,940

FDIC_Loss_Sharing_Asset_FDIC_L1

FDIC Loss Sharing Asset FDIC Loss Sharing Asset (Tables)	3 Months Ended
	Mar. 31, 2015
FDIC Loss-Sharing Arrangements [Abstract]
Schedule of Composition of Loss Sharing Assets and True Up Liability	The following table presents information about the composition of the FDIC loss sharing asset, the true‑up liability, and the non‑single family and the single family covered assets as of the date indicated:
		31-Mar-15
		Affinity Bank		Los Padres Bank		Western Commercial Bank		San Luis Trust Bank		Total
		(In thousands)
	FDIC loss sharing asset	$	140	$	8,161	$	710	$	7,521	$	16,532
	True‑up liability	N/A		N/A		$	1,773	$	5,517	$	7,290
	Non-single family covered assets(1)	$	105,614	$	73,072	$	8,799	$	26,001	$	213,486
	Single family covered assets	$	10,932	$	55,447	N/A		$	29,101	$	95,480
	Loss sharing expiration dates:
	Non‑single family	3rd Quarter 2014		3rd Quarter 2015		4th Quarter 2015		1st Quarter 2016
	Single family	3rd Quarter 2019		3rd Quarter 2020		N/A		1st Quarter 2021
	Loss recovery expiration dates:
	Non‑single family	3rd Quarter 2017		3rd Quarter 2018		4th Quarter 2018		1st Quarter 2019
	Single family	3rd Quarter 2019		3rd Quarter 2020		N/A		1st Quarter 2021
	_________________________
	-1	Excludes securities

Borrowings_Tables

Borrowings (Tables)	3 Months Ended
	Mar. 31, 2015
Borrowings Subordinated Debentures And Brokered Deposits [Abstract]
Schedule of Debt	The following table summarizes our borrowings as of the dates indicated:
		March 31, 2015					December 31, 2014
		Amount			Rate		Amount			Rate
		(Dollars in thousands)
	Non‑recourse debt	$	3,156		6.34	%	$	3,402		6.43	%
	FHLB overnight advances	615,000			0.24	%	380,000			0.27	%
	Total borrowings	$	618,156				$	383,402
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:
		31-Mar-15					31-Dec-14
												Date	Maturity	Rate Index
	Series	Amount			Rate		Amount			Rate		Issued	Date	(Quarterly Reset)
		(Dollars in thousands)
	Trust V	$	10,310		3.37	%	$	10,310		3.33	%	8/15/03	9/17/33	3 month LIBOR + 3.10
	Trust VI	10,310			3.32	%	10,310			3.29	%	9/3/03	9/15/33	3 month LIBOR + 3.05
	Trust CII	5,155			3.22	%	5,155			3.19	%	9/17/03	9/17/33	3 month LIBOR + 2.95
	Trust VII	61,856			3	%	61,856			2.98	%	2/5/04	4/23/34	3 month LIBOR + 2.75
	Trust CIII	20,619			1.96	%	20,619			1.93	%	8/15/05	9/15/35	3 month LIBOR + 1.69
	Trust FCCI	16,495			1.87	%	16,495			1.84	%	1/25/07	3/15/37	3 month LIBOR + 1.60
	Trust FCBI	10,310			1.82	%	10,310			1.79	%	9/30/05	12/15/35	3 month LIBOR + 1.55
	Trust CS 2005-1 (1)	82,475			2.22	%	82,475			2.19	%	11/21/05	12/15/35	3 month LIBOR + 1.95
	Trust CS 2005-2 (1)	128,866			2.2	%	128,866			2.18	%	12/14/05	1/30/36	3 month LIBOR + 1.95
	Trust CS 2006-1 (1)	51,545			2.2	%	51,545			2.18	%	2/22/06	4/30/36	3 month LIBOR + 1.95
	Trust CS 2006-2 (1)	51,550			2.2	%	51,550			2.18	%	9/27/06	10/30/36	3 month LIBOR + 1.95
	Trust CS 2006-3 (1)(3)	27,651			2.1	%	31,188			2.14	%	9/29/06	10/30/36	3 month EURIBOR + 2.05
	Trust CS 2006-4 (1)	16,470			2.2	%	16,470			2.18	%	12/5/06	1/30/37	3 month LIBOR + 1.95
	Trust CS 2006-5 (1)	6,650			2.2	%	6,650			2.18	%	12/19/06	1/30/37	3 month LIBOR + 1.95
	Trust CS 2007-2 (1)	39,177			2.2	%	39,177			2.18	%	6/13/07	7/30/37	3 month LIBOR + 1.95
	Gross subordinated debentures	539,439					542,976
	Unamortized discount (2)	(107,991		)			(109,393		)
	Net subordinated debentures	$	431,448				$	433,583
	___________________
	-1	Acquired in the CapitalSource Inc. merger.
	-2	Amount represents the fair value adjustment on trust preferred securities assumed in the CapitalSource Inc. and FCAL acquisitions.
	-3	Denomination is in Euros with a value of €25.8 million.

Commitments_and_Contingencies_

Commitments and Contingencies Commitments and Contingencies Disclosure (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments Disclosure	The following table presents a summary of the financial instruments described above as of the dates indicated:
		31-Mar-15		31-Dec-14
		(In thousands)
	Loan commitments to extend credit	$	2,122,749	$	1,921,067
	Standby letters of credit	97,540		88,495
	Commitments to purchase equipment being acquired for lease to others	23,535		12,839
		$	2,243,824	$	2,022,401

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	The following tables present information on the assets measured and recorded at fair value on a recurring basis as of the dates indicated:
		Fair Value Measurements as of
		March 31, 2015
	Measured on a Recurring Basis:	Total			Level 1			Level 2			Level 3
		(In thousands)
	Securities available‑for‑sale:
	Government agency and government‑sponsored enterprise
	pass-through securities	$	458,892		$	—		$	458,892		$	—
	Government agency and government‑sponsored enterprise
	collateralized mortgage obligations	276,224			—			276,224			—
	Covered private label CMOs	33,444			—			—			33,444
	Other private label CMOs	9,650			—			9,650			—
	Municipal securities	592,853			—			592,853			—
	Corporate debt securities	47,745			—			47,745			—
	Collateralized loan obligations	113,805			—			113,805			—
	Government‑sponsored enterprise debt securities	37,405			—			37,405			—
	Other securities	25,391			524			24,867			—
	Total securities available-for-sale	1,595,409			524			1,561,441			33,444
	Derivative assets	9,749			—			9,749			—
	Total recurring assets	$	1,605,158		$	524		$	1,571,190		$	33,444
		Fair Value Measurements as of
		December 31, 2014
	Measured on a Recurring Basis:	Total			Level 1			Level 2			Level 3
		(In thousands)
	Securities available‑for‑sale:
	Government agency and government‑sponsored enterprise
	pass-through securities	$	535,672		$	—		$	535,672		$	—
	Government agency and government‑sponsored enterprise
	collateralized mortgage obligations	277,946			—			277,946			—
	Covered private label CMOs	33,947			—			—			33,947
	Other private label CMOs	10,914			—			10,914			—
	Municipal securities	536,116			—			536,116			—
	Corporate debt securities	110,109			—			110,109			—
	Government‑sponsored enterprise debt securities	36,757			—			36,757			—
	Other securities	25,716			519			25,197			—
	Total securities available-for-sale	1,567,177			519			1,532,711			33,947
	Derivative assets	5,234			—			5,234			—
	Total recurring assets	$	1,572,411		$	519		$	1,537,945		$	33,947
	Derivative liabilities	$	118		$	—		$	118		$	—
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]	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 covered private label CMOs measured at fair value on a recurring basis as of March 31, 2015:
		Covered Private Label CMOs
	Unobservable Inputs:	Range of Inputs		Weighted Average Input
	Voluntary annual prepayment speeds	0% - 34.4%		5.70%
	Annual default rates	0% - 42.7%		2.90%
	Loss severity rates	0% - 71.2%		30.20%
	Discount rates	0% - 22.6%		5.60%
Fair Value, Assets Measured on Recurring Basis, Significant Unobservable Inputs (Level 3) Reconciliation	The following table summarizes activity for assets measured at fair value on a recurring basis that are categorized as Level 3 for the period indicated:
		Covered Private Label CMOs
		(In thousands)
	Balance, December 31, 2014	$	33,947
	Total realized in earnings	154
	Total unrealized loss in comprehensive income	(109		)
	Net settlements	(548		)
	Balance, March 31, 2015	$	33,444
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
		March 31, 2015
		Total			Level 1			Level 2			Level 3
	Measured on a Non‑Recurring Basis:	(In thousands)
	Impaired Non‑PCI loans	$	59,243		$	—		$	2,179		$	57,064
	Other real estate owned	782			—			782			—
	Total non-recurring	$	60,025		$	—		$	2,961		$	57,064
		Fair Value Measurement as of
		December 31, 2014
		Total			Level 1			Level 2			Level 3
	Measured on a Non‑Recurring Basis:	(In thousands)
	Impaired Non‑PCI loans	$	42,693		$	—		$	2,366		$	40,327
	Other real estate owned	24,015			—			18,400			5,615
	Investments carried at cost	566			—			—			566
	Total non-recurring	$	67,274		$	—		$	20,766		$	46,508
Net Losses (Gains) on Nonrecurring Assets [Table Text Block]	The following table presents losses recognized on assets measured on a nonrecurring basis for the period indicated:
		Three Months Ended
		March 31, 2015
	Loss on Assets Measured on a Non‑Recurring Basis:	(In thousands)
	Impaired Non‑PCI loans	$	(9,192	)
	Other real estate owned	(124		)
	Total net loss	$	(9,316	)
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 March 31, 2015:
	Asset		Fair Value			Valuation Technique	Unobservable Inputs		Range	Weighted
			(In thousands)							Average
	Impaired Non-PCI loans		$	32,905		Discounted cash flows	Discount rates		2.75% - 10.46%	6.73%
			24,159			Appraisals	No discounts
	Total non-recurring Level 3		$	57,064
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:
		31-Mar-15
		Carrying or			Estimated Fair Value
		Contract
		Amount			Total			Level 1			Level 2		Level 3
		(In thousands)
	Financial Assets:
	Cash and due from banks	$	140,873		$	140,873		$	140,873		$	—	$	—
	Interest‑earning deposits in financial institutions	250,981			250,981			250,981			—		—
	Securities available‑for‑sale	1,595,409			1,595,409			524			1,561,441		33,444
	Investment in FHLB stock	28,905			28,905			—			28,905		—
	Investments carried at cost	3,100			3,534			—			—		3,534
	Investments accounted for under the equity method	21,226			21,475			—			—		21,475
	Loans and leases, net	12,179,788			12,280,982			—			2,179		12,278,803
	Derivative assets	9,749			9,749			—			9,749		—
	Financial Liabilities:
	Deposits:
	Demand, money market, interest checking, and savings deposits	6,353,376			6,353,376			—			6,353,376		—
	Time deposits	5,580,799			5,584,088			—			5,584,088		—
	Borrowings	618,156			618,351			615,000			3,351		—
	Subordinated debentures	431,448			415,210			—			415,210		—
		31-Dec-14
		Carrying or			Estimated Fair Value
		Contract
		Amount			Total			Level 1			Level 2		Level 3
		(In thousands)
	Financial Assets:
	Cash and due from banks	$	164,757		$	164,757		$	164,757		$	—	$	—
	Interest‑earning deposits in financial institutions	148,469			148,469			148,469			—		—
	Securities available‑for‑sale	1,567,177			1,567,177			519			1,532,711		33,947
	Investment in FHLB stock	40,609			40,609			—			40,609		—
	Investments carried at cost	3,691			3,691			—			—		3,691
	Investments accounted for under the equity method	21,461			21,700			—			—		21,700
	Loans and leases, net	11,797,977			11,757,951			—			2,366		11,755,585
	Derivative assets	5,234			5,234			—			5,234		—
	Financial Liabilities:
	Deposits:
	Demand, money market, interest checking, and savings deposits	6,256,190			6,256,190			—			6,256,190		—
	Time deposits	5,498,938			5,502,479			—			5,502,479		—
	Borrowings	383,402			383,539			380,000			3,539		—
	Subordinated debentures	433,583			417,657			—			417,657		—
	Derivative liabilities	118			118			—			118		—

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
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
		31-Mar-15			31-Dec-14			31-Mar-14
		(Dollars in thousands, except per share data)
	Basic earnings per share:
	Net earnings from continuing operations	$	73,079		$	71,057		$	25,905
	Less: earnings allocated to unvested restricted stock(1)	(819		)	(810		)	(500		)
	Net earnings from continuing operations allocated to common shares	72,260			70,247			25,405
	Net (loss) earnings from discontinued operations allocated to common shares	—			(57		)	(804		)
	Net earnings allocated to common shares	$	72,260		$	70,190		$	24,601
	Weighted-average basic shares and unvested restricted stock outstanding	103,035			103,045			45,799
	Less: weighted-average unvested restricted stock outstanding	(1,122		)	(1,132		)	(1,148		)
	Weighted-average basic shares outstanding	101,913			101,913			44,651
	Basic earnings per share:
	Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
	Net loss from discontinued operations	—			—			(0.02		)
	Net earnings	$	0.71		$	0.69		$	0.55
	Diluted earnings per share:
	Net earnings from continuing operations allocated to common shares	$	72,260		$	70,247		$	25,405
	Net (loss) earnings from discontinued operations allocated to common shares	—			(57		)	(804		)
	Net earnings allocated to common shares	$	72,260		$	70,190		$	24,601
	Weighted-average basic shares outstanding	101,913			101,913			44,651
	Diluted earnings per share:
	Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
	Net loss from discontinued operations	—			—			(0.02		)
	Net earnings	$	0.71		$	0.69		$	0.55
	________________________
	-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.

Business_Segment_Tables

Business Segment (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	The following tables present information regarding our business segments as of and for the periods indicated:
		31-Mar-15
		Community			National						Consolidated
	Balance Sheet Data:	Banking			Lending			Other			Company
		(In thousands)
	Loans and leases, net of deferred fees	$	3,349,928		$	8,898,843		$	23,395		$	12,272,166
	Allowance for loan and lease losses	(40,906		)	(51,472		)	—			(92,378		)
	Total loans and leases, net	$	3,309,022		$	8,847,371		$	23,395		$	12,179,788
	Goodwill(1)	$	333,979		$	1,394,401		$	—		$	1,728,380
	Core deposit and customer relationship intangibles, net	14,918			785			—			15,703
	Total assets	6,553,028			9,905,563			185,349			16,643,940
	Total deposits(2)	12,252,851			35,847			(354,523		)	11,934,175
	________________________
	-1	The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.
	-2	The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.
		31-Mar-14
		Community			National						Consolidated
	Balance Sheet Data:	Banking			Lending			Other			Company
		(In thousands)
	Loans and leases, net of deferred fees	$	3,707,308		$	453,759		$	—		$	4,161,067
	Allowance for loan and lease losses	(74,833		)	(6,347		)	—			(81,180		)
	Total loans and leases, net	$	3,632,475		$	447,412		$	—		$	4,079,887
	Goodwill	$	183,065		$	25,678		$	—		$	208,743
	Core deposit and customer relationship intangibles, net	14,139			1,745			—			15,884
	Total assets	5,990,162			517,126			10,565			6,517,853
	Total deposits(1)	5,415,691			—			(46,283		)	5,369,408
	________________________
	-1	The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
		Three Months Ended March 31, 2015
		Community			National						Consolidated
	Results of Operations:	Banking			Lending			Other			Company
		(In thousands)
	Interest income	$	62,956		$	151,219		$	139		$	214,314
	Interest expense	(10,661		)	(53		)	(4,525		)	(15,239		)
	Intersegment interest income (expense)	6,721			(6,721		)	—			—
	Net interest income (expense)	59,016			144,445			(4,386		)	199,075
	Negative provision (provision) for credit losses	8,064			(24,406		)	(92		)	(16,434		)
	Gain on securities	3,275			—			—			3,275
	FDIC loss sharing expense	(4,399		)	—			—			(4,399		)
	Other noninterest income	9,575			5,142			7,278			21,995
	Total noninterest income	8,451			5,142			7,278			20,871
	Foreclosed assets (expense) income, net	(44		)	(61		)	(231		)	(336		)
	Intangible asset amortization	(1,389		)	(112		)	—			(1,501		)
	Acquisition, integration and reorganization costs	(1,890		)	—			(110		)	(2,000		)
	Other noninterest expense	(55,205		)	(22,837		)	(2,481		)	(80,523		)
	Total noninterest expense	(58,528		)	(23,010		)	(2,822		)	(84,360		)
	Intersegment noninterest income (expense)	26,563			(26,563		)	—			—
	Total noninterest expense - adjusted	(31,965		)	(49,573		)	(2,822		)	(84,360		)
	Earnings (loss) before taxes	43,566			75,608			(22		)	119,152
	Income tax (expense) benefit	(16,873		)	(29,282		)	82			(46,073		)
	Net earnings (loss)	$	26,693		$	46,326		$	60		$	73,079
		Three Months Ended December 31, 2014
		Community			National						Consolidated
	Results of Operations:	Banking			Lending			Other			Company
		(In thousands)
	Interest income	$	64,967		$	144,546		$	183		$	209,696
	Interest expense	(10,069		)	(46		)	(4,598		)	(14,713		)
	Intersegment interest income (expense)	6,173			(6,173		)	—			—
	Net interest income (expense)	61,071			138,327			(4,415		)	194,983
	Negative provision (provision) for credit losses	9,753			(11,816		)	—			(2,063		)
	FDIC loss sharing expense	(4,360		)	—			—			(4,360		)
	Other noninterest income	7,025			7,330			2,708			17,063
	Total noninterest (expense) income	2,665			7,330			2,708			12,703
	Foreclosed assets expense, net	(2,286		)	(18		)	366			(1,938		)
	Intangible asset amortization	(1,507		)	(112		)	—			(1,619		)
	Acquisition, integration and reorganization costs	(7,381		)	—			—			(7,381		)
	Other noninterest expense	(51,605		)	(24,526		)	(4,236		)	(80,367		)
	Total noninterest expense	(62,779		)	(24,656		)	(3,870		)	(91,305		)
	Intersegment noninterest income (expense)	21,953			(21,953		)	—			—
	Total noninterest expense - adjusted	(40,826		)	(46,609		)	(3,870		)	(91,305		)
	Earnings (loss) from continuing operations before taxes	32,663			87,232			(5,577		)	114,318
	Income tax (expense) benefit	(13,651		)	(34,781		)	5,171			(43,261		)
	Net earnings (loss) from continuing operations	19,012			52,451			(406		)	71,057
	Loss from discontinued operations before taxes	(105		)	—			—			(105		)
	Income tax benefit	47			—			—			47
	Net loss from discontinued operations	(58		)	—			—			(58		)
	Net earnings (loss)	$	18,954		$	52,451		$	(406	)	$	70,999
		Three Months Ended March 31, 2014
		Community			National						Consolidated
	Results of Operations:	Banking			Lending			Other			Company
		(In thousands)
	Interest income	$	77,595		$	10,765		$	—		$	88,360
	Interest Expense	(1,227		)	(77		)	(1,041		)	(2,345		)
	Intersegment interest income (expense)	222			(222		)	—			—
	Net interest income (expense)	76,590			10,466			(1,041		)	86,015
	Negative provision (provision) for credit losses	826			(182		)	—			644
	Gain on securities	4,752			—			—			4,752
	FDIC loss sharing expense, net	(11,430		)	—			—			(11,430		)
	Other noninterest income	6,897			4,445			27			11,369
	Total noninterest income	219			4,445			27			4,691
	Foreclosed assets expense, net	1,861			—			—			1,861
Intangible asset amortization	(1,191		)	(173		)	—			(1,364		)
Acquisition, integration and reorganization costs	(2,200		)	—			—			(2,200		)
Other noninterest expense	(40,285		)	(6,573		)	(1,603		)	(48,461		)
Total noninterest expense	(41,815		)	(6,746		)	(1,603		)	(50,164		)
Earnings (loss) from continuing operations before taxes	35,820			7,983			(2,617		)	41,186
Income tax (expense) benefit	(13,039		)	(3,331		)	1,089			(15,281		)
Net earnings (loss) from continuing operations	22,781			4,652			(1,528		)	25,905
Loss from discontinued operations before taxes	(1,413		)	—			—			(1,413		)
Income tax benefit	588			—			—			588
Net loss from discontinued operations	(825		)	—			—			(825		)
Net earnings (loss)	$	21,956		$	4,652		$	(1,528	)	$	25,080

Organization_Details

Organization (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
	bank_branch
General Introduction [Abstract]
Total assets	$16,643,940,000	$16,234,605,000	$6,517,853,000
Loans and Leases Receivable Gross Carrying Amount Covered And Noncovered	12,302,292,000	11,904,684,000
Total deposits	11,934,175,000	11,755,128,000	5,369,408,000
Total stockholders' equity	3,533,361,000	3,506,230,000
Number Of Branches	80
Number of Businesses Acquired	27
Start of Acquisition Activities	1-May-00
Square 1 Financial, Inc. Acquisition Plan [Abstract]
Common Stock, Par or Stated Value Per Share	$0.01	$0.01
Square 1 Financial, Inc. [Member]
Square 1 Financial, Inc. Acquisition Plan [Abstract]
Business Acquisition, Date of Acquisition Agreement	2-Mar-15
Business Combination, Contingent Consideration, Liability	849,000,000
Business Acquisition Shares Receivable By Stockholders Of Acquiree Ratio	0.5997
Business Acquisition, Share Price	$27.49
Common Stock, Par or Stated Value Per Share	$45.84
Consideration valuation date	27-Feb-15
Consolidated Total Assets Proforma Upon Acquisition	19,800,000,000
Number of Branches Upon Acquisition	80
Retained Earnings [Member]
General Introduction [Abstract]
Total stockholders' equity	-212,633,000	-285,712,000
Other Organization Information [Abstract]
Cumulative Effect of Prospective Application of New Accounting Principle	($195,000)

Discontinued_Operations_Discon1

Discontinued Operations Discontinued Operations (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Liabilities	$13,110,579	$12,728,375
Electronic Payment Systems [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Liabilities	$20,400	$21,300

Acquisitions_Acquisitions_Deta

Acquisitions Acquisitions (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015		Apr. 07, 2014		Dec. 31, 2014	Mar. 31, 2014
Business Acquisition [Line Items]
Equipment leased to others under operating leases	$119,959,000				$122,506,000
Goodwill	1,728,380,000	[1]			1,720,479,000	208,743,000
Proceeds from Sale of Other Receivables	484,000,000
Capitalsource, Inc. [Member]
Business Acquisition [Line Items]
Cash and due from banks			768,553,000
Interest-earning deposits in financial institutions			60,612,000
Investments securities available-for-sale			382,797,000
FHLB stock			46,060,000
Loans and leases			6,877,427,000
Equipment leased to others under operating leases			160,015,000
Premises and equipment			12,663,000
Foreclosed assets			6,382,000
Income Tax Assets			304,856,000
Goodwill			1,526,282,000
Other intangible assets			6,720,000
Other assets			582,985,000	[2]
Total assets acquired			10,735,352,000
Noninterest-bearing deposits			4,631,000
Interest-bearing deposits			6,236,419,000
Other borrowings			992,109,000
Subordinated Debentures			300,918,000
Accrued interest payable and other liabilities			124,087,000
Total liabilities assumed			7,658,164,000
Total consideration paid			3,077,188,000
Cash paid			483,118,000
PacWest common stock issued			$2,594,070,000
[1]	The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.
[2]	(1) Includes a $484 million receivable for securities sales proceeds.

Acquisitions_Acquisitions_Deta1

Acquisitions Acquisitions (Details Textuals) (USD $)	3 Months Ended		0 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Apr. 07, 2014	Dec. 31, 2014	Mar. 31, 2014
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition	7-Apr-14
Goodwill	$1,728,380	[1]		$1,720,479	$208,743
Capitalsource, Inc. [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition			7-Apr-14
Goodwill			$1,526,282
[1]	The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets Goodwill and Other Intangilbe Assets (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Balance, December 31, 2014	$1,720,479		$208,743
Goodwill, Impairment Loss	7,901
Balance, March 31, 2015	$1,728,380	[1]	$208,743
[1]	The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Details 1) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$53,090	$53,090	$48,963
Finite-Lived Intangible Assets, Accumulated Amortization	-35,886	-34,267	-31,715
Amortization of Intangible Assets	-1,501	-1,619	-1,364
Finite-Lived Intangible Assets, Accumulated Amortization	-37,387	-35,886	-33,079
Finite-Lived Intangible Assets, Net	$15,703	$17,204	$15,884

Goodwill_and_Other_Intangible_4

Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Details Textual) (USD $)	3 Months Ended			12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2015
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	4 years 3 months 20 days
Intangible asset amortization	$1,501,000	$1,619,000	$1,364,000
Aggregate Amortization Expense 2016	4,100,000
Aggregate Amortization Expense 2017	2,300,000
Aggregate Amortization Expense 2018	2,000,000
Aggregate Amortization Expense 2019	1,700,000
Aggregate Amortization Expense 2020	953,000
Scenario, Forecast [Member]
Intangible asset amortization				$6,000,000

Investments_Details_1

Investments (Details 1) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	$1,547,015	$1,522,871
Available-for-sale Securities, Gross Unrealized Gain	51,805	47,908
Available-for-sale Securities, Gross Unrealized Loss	-3,411	-3,602
Securities availablebforbsale	1,595,409	1,567,177
Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities availablebforbsale	1,595,409	1,567,177
Government agency and government-sponsored enterprise pass through securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	439,696	515,902
Available-for-sale Securities, Gross Unrealized Gain	19,327	20,142
Available-for-sale Securities, Gross Unrealized Loss	-131	-372
Government agency and government-sponsored enterprise pass through securities | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities availablebforbsale	458,892	535,672
Government agency and government-sponsored enterprise collateralized mortgage obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	269,766	275,513
Available-for-sale Securities, Gross Unrealized Gain	6,909	3,513
Available-for-sale Securities, Gross Unrealized Loss	-451	-1,080
Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities availablebforbsale	276,224	277,946
Covered private label collateralized mortgage obligation [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	26,496	26,889
Available-for-sale Securities, Gross Unrealized Gain	7,014	7,153
Available-for-sale Securities, Gross Unrealized Loss	-66	-95
Covered private label collateralized mortgage obligation [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities availablebforbsale	33,444	33,947
Other Private Label Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	9,645	10,961
Available-for-sale Securities, Gross Unrealized Gain	52	46
Available-for-sale Securities, Gross Unrealized Loss	-47	-93
Other Private Label Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities availablebforbsale	9,650	10,914
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	579,344	521,499
Available-for-sale Securities, Gross Unrealized Gain	15,708	15,899
Available-for-sale Securities, Gross Unrealized Loss	-2,199	-1,282
Municipal securities | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities availablebforbsale	592,853	536,116
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	47,485	110,074
Available-for-sale Securities, Gross Unrealized Gain	683	597
Available-for-sale Securities, Gross Unrealized Loss	-423	-562
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities availablebforbsale	47,745	110,109
Collateralized Loan Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	112,883	0
Available-for-sale Securities, Gross Unrealized Gain	922	0
Available-for-sale Securities, Gross Unrealized Loss	0	0
Securities availablebforbsale		0
Collateralized Loan Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities availablebforbsale	113,805
US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	36,249	36,232
Available-for-sale Securities, Gross Unrealized Gain	1,156	525
Available-for-sale Securities, Gross Unrealized Loss	0	0
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities availablebforbsale	37,405	36,757
Other securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	25,451	25,801
Available-for-sale Securities, Gross Unrealized Gain	34	33
Available-for-sale Securities, Gross Unrealized Loss	-94	-118
Other securities [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities availablebforbsale	$25,391	$25,716

Investments_Details_2

Investments (Details 2) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	$150,881	$106,602
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	-1,866	-882
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	74,198	173,724
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	-1,545	-2,720
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	225,079	280,326
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	-3,411	-3,602
Government agency and government-sponsored enterprise pass through securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	5,031	10,711
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	-42	-13
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	10,085	27,100
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	-89	-359
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	15,116	37,811
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	-131	-372
Government agency and government-sponsored enterprise collateralized mortgage obligations [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	0	23,908
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0	-73
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	14,403	40,652
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	-451	-1,007
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	14,403	64,560
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	-451	-1,080
Covered private label collateralized mortgage obligation [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	726	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	-6	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	643	1,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	-60	-95
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	1,369	1,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	-66	-95
Other Private Label Collateralized Mortgage Obligations [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	1,206	1,618
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	-46	-93
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	360	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	-1	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	1,566	1,618
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	-47	-93
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	112,361	11,854
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	-1,277	-66
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	38,687	84,822
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	-922	-1,216
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	151,048	96,676
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	-2,199	-1,282
Corporate Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	25,104	52,071
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	-423	-547
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	0	10,131
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	-15
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	25,104	62,202
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	-423	-562
Other securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	6,453	6,440
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	-72	-90
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	10,020	10,019
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	-22	-28
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	16,473	16,459
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	($94)	($118)

Investments_Details_3

Investments (Details 3) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	$18,358
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	76,173
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	276,933
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis	1,175,551
Available-for-sale Securities, Amortized Cost Basis	1,547,015	1,522,871
Fair Value Disclosures [Abstract]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	18,538
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	76,515
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	287,023
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	1,213,333
Available-for-sale Securities	$1,595,409	$1,567,177

Investments_Investments_Detail

Investments Investments (Details 4) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Net Investment Income [Line Items]
Interest Income, Securities, Operating, Taxable	$7,473	$7,697	$6,920
Interest Income, Securities, Operating, Tax Exempt	3,894	3,593	3,328
Investment Income, Dividend	828	915	575
Investment Income, Interest and Dividend	$12,195	$12,205	$10,823

Investments_Details_Textual

Investments (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available For Sale Securities Pledged As Collateral Amortized Cost	$354,700,000
Payments to Acquire Investments	-196,600,000		-140,000,000
Proceeds from Sale of Available-for-sale Securities	144,945,000		142,041,000
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	2,364,000	5,559,000	10,172,000
Federal Home Loan Bank stock, at cost	28,905,000	40,609,000
Net change in FLHB Stock	11,704,000		2,939,000
Redemptions of FHLB stock	15,600,000
Purchases of FHLB Stock	-3,900,000
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax	4,258,000	5,559,000	12,928,000
Government agency and government-sponsored enterprise pass through securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Sale of Available-for-sale Securities	60,300,000		137,300,000
Available-for-sale Securities, Gross Realized Gains			4,800,000
Government agency and government-sponsored enterprise pass through securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains	2,600,000
Texas Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Sale of Available-for-sale Securities	13,900,000
Available-for-sale Securities, Gross Realized Gains	883,000
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Sale of Available-for-sale Securities	67,500,000
Available-for-sale Securities, Gross Realized Losses	($232,000)

Loans_and_Credit_Quality_Detai

Loans and Credit Quality (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	$12,047,946	$11,904,684
PCI loans	254,285	290,791
Loans and Leases Receivable, Deferred Income	-30,126	-22,252
Loans held for investment, net	12,272,166	11,882,432	4,161,067
Loans and Leases Receivable, Allowance	-92,378		-81,180
Loans and leases, net	12,179,788	11,797,977
Loans and Leases Receivable, Net Reported Amount, Covered	241,587	276,792
Total loans and leases, net	12,179,788	11,797,977	4,079,887
Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	5,828,439	5,607,316
PCI loans	226,502	256,489
Loans and Leases Receivable, Allowance	-30,911		-24,352
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	333,005	316,086
PCI loans	1,897	6,924
Loans and Leases Receivable, Allowance	-2,173		-4,103
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	6,046,946	5,879,575
PCI loans	25,664	27,155
Loans and Leases Receivable, Allowance	-45,794		-27,740
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	93,902	101,707
PCI loans	283	284
Loans and Leases Receivable, Allowance	-802		-3,785
NonCovered [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases		11,613,832
Loans and Leases Receivable, Deferred Income	-30,065	-22,191
Loans held for investment, net	12,017,881	11,591,641	3,828,551
Loans and Leases Receivable, Allowance	-79,680	-70,456	-59,980	-60,241
Loans and leases, net	11,938,201	11,521,185
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	5,601,937	5,350,827
Loans held for investment, net	5,588,430	5,340,560	2,320,554
Loans and Leases Receivable, Allowance		-25,097		-26,078
NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	331,108	309,162
Loans held for investment, net	328,709	307,135	240,073
Loans and Leases Receivable, Allowance		-4,248		-4,298
NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	6,021,282	5,852,420
Loans held for investment, net	6,007,067	5,842,463	1,201,142
Loans and Leases Receivable, Allowance		-39,858		-26,921
NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	93,619	101,423
Loans held for investment, net	93,675	101,483	66,782
Loans and Leases Receivable, Allowance		-1,253		-2,944
Purchased Credit Impaired Loans and Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
PCI loans	254,346	290,852
Loans and Leases Receivable, Deferred Income	-61	-61
Loans held for investment, net	254,285	290,791	332,516
Loans and Leases Receivable, Allowance, Covered	-12,698	-13,999	-21,200	-21,793
Loans and Leases Receivable, Net Reported Amount, Covered	241,587	276,792
NonPCI and PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	$12,302,292

Loans_and_Credit_Quality_Detai1

Loans and Credit Quality (Details 1) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	$92,378	$81,180
Allowance for loan and lease losses	92,378	81,180	84,455	82,034
Allowance for Loan and Lease Losses, Write-offs	-10,490	-1,550
Allowance for Loan and Lease Loss, Recovery of Bad Debts	2,542	740
Provision for Loan and Lease Losses	15,871	-44
Loans and Leases Receivable, Net of Deferred Income	12,272,166	4,161,067	11,882,432
Loans and Leases Receivable Net Of Deferred Income Covered And Noncovered	12,272,166	4,161,067
Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	30,911	24,352
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	2,173	4,103
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	45,794	27,740
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	802	3,785
Purchased Credit Impaired Loans and Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance, Covered	12,698	21,200	13,999	21,793
Allowance for Loan and Lease Losses, Write-offs	-579	0
Allowance for Loan and Lease Loss, Recovery of Bad Debts	11	51
Provision for Loan and Lease Losses	-733	-644
Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality	12,698	21,200
Loans and Leases Receivable, Net of Deferred Income	254,285	332,516	290,791
Financing Receivable, Acquired with Deteriorated Credit Quality	254,285	332,516
NonCovered [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	79,680	59,980	70,456	60,241
Impaired Financing Receivable, Related Allowance	12,226		10,774
Allowance for Loan and Lease Losses, Write-offs	-9,911	-1,550
Allowance for Loan and Lease Loss, Recovery of Bad Debts	2,531	689
Provision for Loan and Lease Losses	16,604	600
Financing Receivable, Individually Evaluated for Impairment	12,226	8,665
Financing Receivable, Collectively Evaluated for Impairment	67,454	51,315
Loans and Leases Receivable, Net of Deferred Income	12,017,881	3,828,551	11,591,641
Financing Receivable, Individually Evaluated for Impairment	175,309	93,222
Financing Receivable, Collectively Evaluated for Impairment	11,842,572	3,735,329
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance			25,097	26,078
Impaired Financing Receivable, Related Allowance	1,500		693
Allowance for Loan and Lease Losses, Write-offs	-1,453	-94
Allowance for Loan and Lease Loss, Recovery of Bad Debts	1,295	261
Provision for Loan and Lease Losses	5,972	-1,893
Financing Receivable, Individually Evaluated for Impairment		2,690
Financing Receivable, Collectively Evaluated for Impairment	29,411	21,662
Loans and Leases Receivable, Net of Deferred Income	5,588,430	2,320,554	5,340,560
Financing Receivable, Individually Evaluated for Impairment	59,733	58,532
Financing Receivable, Collectively Evaluated for Impairment	5,528,697	2,262,022
NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance			4,248	4,298
Impaired Financing Receivable, Related Allowance			69
Allowance for Loan and Lease Losses, Write-offs	0	0
Allowance for Loan and Lease Loss, Recovery of Bad Debts	632	24
Provision for Loan and Lease Losses	-2,707	-219
Financing Receivable, Individually Evaluated for Impairment	55	251
Financing Receivable, Collectively Evaluated for Impairment	2,118	3,852
Loans and Leases Receivable, Net of Deferred Income	328,709	240,073	307,135
Financing Receivable, Individually Evaluated for Impairment	8,639	12,926
Financing Receivable, Collectively Evaluated for Impairment	320,070	227,147
NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance			39,858	26,921
Impaired Financing Receivable, Related Allowance			9,975
Allowance for Loan and Lease Losses, Write-offs	-8,395	-1,441
Allowance for Loan and Lease Loss, Recovery of Bad Debts	410	377
Provision for Loan and Lease Losses	13,921	1,883
Financing Receivable, Individually Evaluated for Impairment	10,493	5,337
Financing Receivable, Collectively Evaluated for Impairment	35,301	22,403
Loans and Leases Receivable, Net of Deferred Income	6,007,067	1,201,142	5,842,463
Financing Receivable, Individually Evaluated for Impairment	103,208	17,792
Financing Receivable, Collectively Evaluated for Impairment	5,903,859	1,183,350
NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance			1,253	2,944
Impaired Financing Receivable, Related Allowance	178		37
Allowance for Loan and Lease Losses, Write-offs	-63	-15
Allowance for Loan and Lease Loss, Recovery of Bad Debts	194	27
Provision for Loan and Lease Losses	-582	829
Financing Receivable, Individually Evaluated for Impairment	178	387	37
Financing Receivable, Collectively Evaluated for Impairment	624	3,398
Loans and Leases Receivable, Net of Deferred Income	93,675	66,782	101,483
Financing Receivable, Individually Evaluated for Impairment	3,729	3,972
Financing Receivable, Collectively Evaluated for Impairment	$89,946	$62,810

Loans_and_Credit_Quality_Detai2

Loans and Credit Quality (Details 2) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$12,272,166	$11,882,432	$4,161,067
NonCovered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	12,017,881	11,591,641	3,828,551
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,588,430	5,340,560	2,320,554
NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	328,709	307,135	240,073
NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	6,007,067	5,842,463	1,201,142
NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	93,675	101,483	66,782
NonCovered [Member] | Nonclassified [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	333,182	242,611
NonCovered [Member] | Nonclassified [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	16,928	17,761
NonCovered [Member] | Nonclassified [Member] | SBA Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	10,919	11,141
NonCovered [Member] | Nonclassified [Member] | Real Estate Other Class [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	69,859	68,084
NonCovered [Member] | Nonclassified [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	97,706	96,986
NonCovered [Member] | Nonclassified [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	398	402
NonCovered [Member] | Nonclassified [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,456	3,346
NonCovered [Member] | Nonclassified [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,854	3,748
NonCovered [Member] | Nonclassified [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	21,265	22,433
NonCovered [Member] | Nonclassified [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,267	1,323
NonCovered [Member] | Nonclassified [Member] | Asset Based [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	11,304	11,547
NonCovered [Member] | Nonclassified [Member] | Cash Flow [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	105,763	83,321
NonCovered [Member] | Nonclassified [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	86,938	15,973
NonCovered [Member] | Nonclassified [Member] | SBA Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,128	3,207
NonCovered [Member] | Nonclassified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	229,665	137,804
NonCovered [Member] | Nonclassified [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,957	4,073
NonCovered [Member] | Classified [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	11,684,699	11,349,030
NonCovered [Member] | Classified [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	595,161	542,458
NonCovered [Member] | Classified [Member] | SBA Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	377,857	364,786
NonCovered [Member] | Classified [Member] | Real Estate Other Class [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	4,517,706	4,336,330
NonCovered [Member] | Classified [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,490,724	5,243,574
NonCovered [Member] | Classified [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	121,918	96,326
NonCovered [Member] | Classified [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	204,937	207,061
NonCovered [Member] | Classified [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	326,855	303,387
NonCovered [Member] | Classified [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	373,123	416,754
NonCovered [Member] | Classified [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	142,047	130,501
NonCovered [Member] | Classified [Member] | Asset Based [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,708,473	1,783,304
NonCovered [Member] | Classified [Member] | Cash Flow [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,687,421	2,376,530
NonCovered [Member] | Classified [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	827,078	953,516
NonCovered [Member] | Classified [Member] | SBA Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	39,260	44,054
NonCovered [Member] | Classified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,777,402	5,704,659
NonCovered [Member] | Classified [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	89,718	97,410
Collateralized Loan Obligations [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	394,388	439,187
Unsecured Commercial Member [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	143,314	131,824
Asset Based [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,719,777	1,794,851
Cash Flow [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,793,184	2,459,851
Equipment Finance Commercial Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	914,016	969,489
SBA Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	42,388	47,261
Residential Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	122,316	96,728
Commercial Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	206,393	210,407
Hospitality [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	612,089	560,219
SBA Loans [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	388,776	375,927
Real Estate Other Class [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$4,587,565	$4,404,414

Loans_and_Credit_Quality_Detai3

Loans and Credit Quality (Details 3) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Delinquent loans in loan portfolio
30-89 Days Past Due	$21,700	$8,700
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	15,800	18,800
Loans held for investment, net	12,272,166	11,882,432	4,161,067
NonCovered [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	37,804	19,406
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	15,804	18,818
Financing Receivable, Recorded Investment, Past Due	53,608	38,224
Current	11,964,273	11,553,417
Loans held for investment, net	12,017,881	11,591,641	3,828,551
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	11,816	11,628
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	10,806	11,987
Financing Receivable, Recorded Investment, Past Due	22,622	23,615
Current	5,565,808	5,316,945
Loans held for investment, net	5,588,430	5,340,560	2,320,554
NonCovered [Member] | Real Estate Construction [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	715
Financing Receivable, Recorded Investment, Past Due	0	715
Current	328,709	306,420
Loans held for investment, net	328,709	307,135	240,073
NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	25,979	7,677
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	1,802	2,970
Financing Receivable, Recorded Investment, Past Due	27,781	10,647
Current	5,979,286	5,831,816
Loans held for investment, net	6,007,067	5,842,463	1,201,142
NonCovered [Member] | Consumer Portfolio Segment [Member]
Delinquent loans in loan portfolio
Loans held for investment, net	93,675	101,483	66,782
Consumer Financing Receivable [Member] | NonCovered [Member] | Consumer Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	9	101
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	3,196	3,146
Financing Receivable, Recorded Investment, Past Due	3,205	3,247
Current	90,470	98,236
Loans held for investment, net		101,483
Collateralized Loan Obligations [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	1,782	878
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	424	965
Financing Receivable, Recorded Investment, Past Due	2,206	1,843
Current	392,182	437,344
Loans held for investment, net	394,388	439,187
Unsecured Commercial Member [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	69
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	16	45
Financing Receivable, Recorded Investment, Past Due	16	114
Current	143,298	131,710
Loans held for investment, net	143,314	131,824
Asset Based [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Current	1,719,777	1,794,851
Loans held for investment, net	1,719,777	1,794,851
Cash Flow [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	232
Financing Receivable, Recorded Investment, Past Due	0	232
Current	2,793,184	2,459,619
Loans held for investment, net	2,793,184	2,459,851
Equipment Finance Commercial Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	23,409	6,525
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	366
Financing Receivable, Recorded Investment, Past Due	23,409	6,891
Current	890,607	962,598
Loans held for investment, net	914,016	969,489
SBA Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	788	205
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	1,362	1,362
Financing Receivable, Recorded Investment, Past Due	2,150	1,567
Current	40,238	45,694
Loans held for investment, net	42,388	47,261
Residential Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Current	122,316	96,728
Loans held for investment, net	122,316	96,728
Commercial Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	715
Financing Receivable, Recorded Investment, Past Due	0	715
Current	206,393	209,692
Loans held for investment, net	206,393	210,407
Hospitality [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Current	612,089	560,219
Loans held for investment, net	612,089	560,219
SBA Loans [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	5,582	5,530
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	5,487	4,357
Financing Receivable, Recorded Investment, Past Due	11,069	9,887
Current	377,707	366,040
Loans held for investment, net	388,776	375,927
Real Estate Other Class [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	6,234	6,098
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	5,319	7,630
Financing Receivable, Recorded Investment, Past Due	11,553	13,728
Current	4,576,012	4,390,686
Loans held for investment, net	$4,587,565	$4,404,414

Loans_and_Credit_Quality_Detai4

Loans and Credit Quality (Details 4) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$12,272,166	$11,882,432	$4,161,067
Non-PCI nonaccrual loans	139,334	83,621
NonCovered [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	12,017,881	11,591,641	3,828,551
Financing Receivable, Recorded Investment, Nonaccrual Status	139,334	83,621
Non-PCI nonaccrual loans		11,591,641
NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	93,675	101,483	66,782
Financing Receivable, Recorded Investment, Nonaccrual Status	3,474	3,485
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,588,430	5,340,560	2,320,554
Financing Receivable, Recorded Investment, Nonaccrual Status	37,335	37,612
NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	328,709	307,135	240,073
Financing Receivable, Recorded Investment, Nonaccrual Status	832	1,559
NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	6,007,067	5,842,463	1,201,142
Financing Receivable, Recorded Investment, Nonaccrual Status	97,693	40,965
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Hospitality [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	8,088	6,366
Nonperforming Financing Receivable [Member] | NonCovered [Member] | SBA Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	10,919	11,141
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Real Estate Other Class [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	18,328	20,105
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	379	381
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	453	1,178
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,601	5,450
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	594	639
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Asset Based [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	4,159	4,574
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	15,172	15,964
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	71,039	11,131
Nonperforming Financing Receivable [Member] | NonCovered [Member] | SBA Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,128	3,207
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income		3,485
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income		37,612
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,559
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income		40,965
Performing Financing Receivable [Member] | NonCovered [Member]
Financing Receivable, Impaired [Line Items]
Non-PCI nonaccrual loans	11,878,547	11,508,020
Performing Financing Receivable [Member] | NonCovered [Member] | Hospitality [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	604,001	553,853
Performing Financing Receivable [Member] | NonCovered [Member] | SBA Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	377,857	364,786
Performing Financing Receivable [Member] | NonCovered [Member] | Real Estate Other Class [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	4,569,237	4,384,309
Performing Financing Receivable [Member] | NonCovered [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	121,937	96,347
Performing Financing Receivable [Member] | NonCovered [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	205,940	209,229
Performing Financing Receivable [Member] | NonCovered [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	390,787	433,737
Performing Financing Receivable [Member] | NonCovered [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	142,720	131,185
Performing Financing Receivable [Member] | NonCovered [Member] | Asset Based [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,715,618	1,790,277
Performing Financing Receivable [Member] | NonCovered [Member] | Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,778,012	2,443,887
Performing Financing Receivable [Member] | NonCovered [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	842,977	958,358
Performing Financing Receivable [Member] | NonCovered [Member] | SBA Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	39,260	44,054
Performing Financing Receivable [Member] | NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	90,201	97,998
Performing Financing Receivable [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,551,095	5,302,948
Performing Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	327,877	305,576
Performing Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,909,374	5,801,498
Collateralized Loan Obligations [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	394,388	439,187
Unsecured Commercial Member [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	143,314	131,824
Asset Based [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,719,777	1,794,851
Cash Flow [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,793,184	2,459,851
Equipment Finance Commercial Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	914,016	969,489
SBA Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	42,388	47,261
Residential Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	122,316	96,728
Commercial Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	206,393	210,407
Hospitality [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	612,089	560,219
SBA Loans [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	388,776	375,927
Real Estate Other Class [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$4,587,565	$4,404,414

Loans_and_Credit_Quality_Loans

Loans and Credit Quality Loans and Credit Quality (Details 5) (NonCovered [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$139,334	$83,621
Impaired Financing Receivable Performing Restructured Loans	35,975	35,244
Impaired Financing Receivable, Recorded Investment	175,309	118,865
Mortgage Loans on Real Estate [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	37,335	37,612
Impaired Financing Receivable Performing Restructured Loans	22,398	20,245
Impaired Financing Receivable, Recorded Investment	59,733	57,857
Real Estate Construction [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	832	1,559
Impaired Financing Receivable Performing Restructured Loans	7,807	8,996
Impaired Financing Receivable, Recorded Investment	8,639	10,555
Commercial Portfolio Segment [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	97,693	40,965
Impaired Financing Receivable Performing Restructured Loans	5,515	5,744
Impaired Financing Receivable, Recorded Investment	103,208	46,709
Consumer Portfolio Segment [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	3,474	3,485
Impaired Financing Receivable Performing Restructured Loans	255	259
Impaired Financing Receivable, Recorded Investment	$3,729	$3,744

Loans_and_Credit_Quality_Detai5

Loans and Credit Quality (Details 6) (NonCovered [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance	$12,226			$10,774
Impaired Financing Receivable, Recorded Investment	175,309			118,865
Impaired Financing Receivable, Unpaid Principal Balance	209,948			150,620
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	12,226		8,665
Impaired Financing Receivable, Average Recorded Investment		113,090	74,904
Impaired Financing Receivable, Interest Income, Accrual Method		657	281
Financing Receivable, Individually Evaluated for Impairment	175,309		93,222
Hospitality [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,930			1,946
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,930			1,945
Impaired Financing Receivable, Related Allowance	31			47
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	8,088			6,366
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	10,096			7,593
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,930		5,658
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	19		20
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		7,836	2,971
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
SBA Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0			0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0			0
Impaired Financing Receivable, Related Allowance	0			0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	10,919			11,141
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	15,030			14,708
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		1,092
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		15
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		9,836	2,519
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
Real Estate Mortgage Other Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	12,986			9,136
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	13,169			9,233
Impaired Financing Receivable, Related Allowance	1,469			646
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	25,810			29,268
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	39,548			40,643
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	12,783		16,174
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	136		119
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		24,219	23,549
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		80	63
Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	759			763
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	759			763
Impaired Financing Receivable, Related Allowance	41			46
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	20			21
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	19			19
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	759		774
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	4		4
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		20	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	403			1,128
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	401			4,934
Impaired Financing Receivable, Related Allowance	14			23
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	7,457			8,643
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	7,571			8,749
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	403		5
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	5		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		7,457	5,491
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		271	25
Collateralized Loan Obligations [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4,811			4,630
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	5,486			5,246
Impaired Financing Receivable, Related Allowance	3,497			3,771
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,324			5,566
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	4,234			6,877
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	4,646		3,765
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	33		6
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		3,324	4,861
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		48	6
Unsecured Commercial Member [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,055			912
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,067			924
Impaired Financing Receivable, Related Allowance	913			799
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	519			725
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	564			809
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,055		742
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	11		6
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		519	326
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		1	0
Asset Based [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	47			137
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	157			247
Impaired Financing Receivable, Related Allowance	47			137
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	4,111			4,436
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	5,220			5,415
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	47		304
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		4,111	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	14,974			15,578
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	17,694			17,970
Impaired Financing Receivable, Related Allowance	2,522			2,667
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	198			387
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	735			919
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	14,973		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		198	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	9,347			6,956
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	9,764			7,268
Impaired Financing Receivable, Related Allowance	3,514			2,601
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	61,694			4,175
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	67,850			7,528
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	4,581		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		7,537	220
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
SBA Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0			0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0			0
Impaired Financing Receivable, Related Allowance	0			0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,128			3,207
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	4,762			4,920
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		919
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		10
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		3,128	3,132
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		45	2
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	383			143
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	386			142
Impaired Financing Receivable, Related Allowance	178			37
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,346			3,601
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	3,506			3,768
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	383		2,151
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	4		4
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		3,345	251
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	1
Impaired Financing Receivable, Recorded Investment	3,729			3,744
Impaired Financing Receivable, Unpaid Principal Balance	3,892			3,910
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	178		387	37
Impaired Financing Receivable, Average Recorded Investment		3,728	2,402
Impaired Financing Receivable, Interest Income, Accrual Method		4	5
Financing Receivable, Individually Evaluated for Impairment	3,729		3,972
Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance	1,500			693
Impaired Financing Receivable, Recorded Investment	59,733			57,857
Impaired Financing Receivable, Unpaid Principal Balance	79,773			74,122
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment			2,690
Impaired Financing Receivable, Average Recorded Investment		56,604	51,963
Impaired Financing Receivable, Interest Income, Accrual Method		235	217
Financing Receivable, Individually Evaluated for Impairment	59,733		58,532
Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance				69
Impaired Financing Receivable, Recorded Investment	8,639			10,555
Impaired Financing Receivable, Unpaid Principal Balance	8,750			14,465
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	55		251
Impaired Financing Receivable, Average Recorded Investment		8,639	6,270
Impaired Financing Receivable, Interest Income, Accrual Method		280	29
Financing Receivable, Individually Evaluated for Impairment	8,639		12,926
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance				9,975
Impaired Financing Receivable, Recorded Investment	103,208			46,709
Impaired Financing Receivable, Unpaid Principal Balance	117,533			58,123
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	10,493		5,337
Impaired Financing Receivable, Average Recorded Investment		44,119	14,269
Impaired Financing Receivable, Interest Income, Accrual Method		138	30
Financing Receivable, Individually Evaluated for Impairment	$103,208		$17,792

Loans_and_Credit_Quality_Detai6

Loans and Credit Quality (Details 7) (NonCovered [Member], USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	30	14
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$15,068,000	$11,129,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	14,701,000	11,129,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	3	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	1,904,000	881,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	772,000	0
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	91,000	124,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	91,000	124,000
Collateralized Loan Obligations [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	6	4
Financing Receivable, Modifications, Pre-Modification Recorded Investment	1,399,000	3,287,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,399,000	3,287,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	385,000	559,000
Unsecured Commercial Member [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	195,000	38,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	195,000	38,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	21,000
Asset Based [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	301,000
Cash Flow [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	2	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	566,000	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	387,000	0
Equipment Finance Commercial Financing Receivable [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	4	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	4,133,000	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	4,133,000	0
SBA Financing Receivable [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	0	238,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	238,000
Commercial Real Estate Construction Financing Receivable [Member] | Real Estate Construction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	2,610,000	4,927,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	2,610,000	4,927,000
Real Estate Mortgage Other Receivable [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	14	4
Financing Receivable, Modifications, Pre-Modification Recorded Investment	6,074,000	2,515,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	5,886,000	2,515,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$1,519,000	$0

Loans_and_Credit_Quality_Detai7

Loans and Credit Quality (Details 8) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Net Reported Amount, Covered	$241,587	$276,792
Purchased Credit Impaired Loans and Leases [Member]
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	302,828	340,639
Loan Discounts	-48,543	-49,848
Loans and Leases Receivable, Allowance, Covered	-12,698	-13,999	-21,200	-21,793
Loans and Leases Receivable, Net Reported Amount, Covered	241,587	276,792
Mortgage Loans on Real Estate [Member]
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	268,777	299,660
Real Estate Construction [Member]
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	2,540	7,743
Commercial Portfolio Segment [Member]
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	31,185	32,904
Consumer Portfolio Segment [Member]
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	$326	$332

Loans_and_Credit_Quality_Detai8

Loans and Credit Quality (Details 9) (Purchased Credit Impaired Loans and Leases [Member], Covered [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		$276,792
Accretable yield		-106,856
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	241,587	276,792
Accretable yield	-102,863	-106,856
Carrying Amount [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	10,183
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans	-46,121
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses, Decreases	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	733
Accretable Yield [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	10,183
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses, Decreases	-6,190
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	$0

Loans_and_Credit_Quality_Detai9

Loans and Credit Quality (Details 10) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	$254,285	$290,791
Nonclassified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	105,195	132,288
Classified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	149,090	158,503
Purchased Credit Impaired Loans and Leases [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	254,346	290,852
Mortgage Loans on Real Estate [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	226,502	256,489
Loans And Leases PCI Net Of Discounts And Earned Income	226,450	256,442
Mortgage Loans on Real Estate [Member] | Nonclassified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	77,548	101,161
Mortgage Loans on Real Estate [Member] | Classified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	148,902	155,281
Real Estate Construction [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	1,897	6,924
Loans And Leases PCI Net Of Discounts And Earned Income	1,888	6,911
Real Estate Construction [Member] | Nonclassified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	1,888	3,901
Real Estate Construction [Member] | Classified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	0	3,010
Commercial Portfolio Segment [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	25,664	27,155
Loans And Leases PCI Net Of Discounts And Earned Income	25,664	27,154
Commercial Portfolio Segment [Member] | Nonclassified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	25,476	26,942
Commercial Portfolio Segment [Member] | Classified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	188	212
Consumer Portfolio Segment [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	283	284
Loans And Leases PCI Net Of Discounts And Earned Income	283	284
Consumer Portfolio Segment [Member] | Nonclassified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	283	284
Consumer Portfolio Segment [Member] | Classified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	$0	$0

Recovered_Sheet1

Loans and Credit Quality (Details Textual) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	$0
Non-PCI nonaccrual loans	139,334,000	83,621,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	15,800,000	18,800,000
Financing Receivable Recorded Investment Thirty to Eighty Nine Days Past Due	21,700,000	8,700,000
Financing Receivable Recorded Investment Nonaccrual Status Current	$101,800,000	$56,100,000

Foreclosed_Assets_Foreclosed_A2

Foreclosed Assets Foreclosed Assets (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Other Real Estate Owned Net Covered and Noncovered including Foreclosed Assets	$35,940		$43,721
Other Real Estate Owned Net	28,195		35,423
Other Foreclosed Assets NonCovered	7,745		8,298
Other Real Estate Owned Net Noncovered including Foreclosed Assets	35,940	[1]	43,721	[1]
NonCovered [Member] | Commercial Real Estate [Member]
Other Real Estate Owned Net	1,036		2,449
NonCovered [Member] | Construction and Land Development [Member]
Other Real Estate Owned Net	18,942		24,759
NonCovered [Member] | Multi Family [Member]
Other Real Estate Owned Net	4,964		4,823
NonCovered [Member] | Residential Mortgage [Member]
Other Real Estate Owned Net	3,253		3,392
Covered [Member]
Other Real Estate Owned Net Covered and Noncovered including Foreclosed Assets	$8,100		$9,300
[1]	(1)As of March 31, 2015 and December 31, 2014 , the amounts of covered foreclosed assets were $8.1 million and $9.3 million.

Foreclosed_Assets_Foreclosed_A3

Foreclosed Assets Foreclosed Assets (Details 1) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Business Acquisition [Line Items]
Balance, December 31, 2014	$43,721	[1]
Reductions related to sales	-8,051
Balance, March 31, 2015	35,940	[1]
NonCovered [Member]
Business Acquisition [Line Items]
Foreclosures	394
Provision for losses	($124)
[1]	(1)As of March 31, 2015 and December 31, 2014 , the amounts of covered foreclosed assets were $8.1 million and $9.3 million.

FDIC_Loss_Sharing_Asset_FDIC_L2

FDIC Loss Sharing Asset FDIC Loss Sharing Asset (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC loss sharing asset	$16,532
FDIC Indemnification True Up	7,290
NonSingle Family Covered Assets	213,486	[1]
Single Family Covered Assets	95,480
Affinity Bank [Member]
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC loss sharing asset	140
NonSingle Family Covered Assets	105,614	[1]
Single Family Covered Assets	10,932
Los Padres Bank [Member]
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC loss sharing asset	8,161
NonSingle Family Covered Assets	73,072	[1]
Single Family Covered Assets	55,447
Western Commercial Bank [Member]
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC loss sharing asset	710
FDIC Indemnification True Up	1,773
NonSingle Family Covered Assets	8,799	[1]
San Luis Trust Bank [Member]
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC loss sharing asset	7,521
FDIC Indemnification True Up	5,517
NonSingle Family Covered Assets	26,001	[1]
Single Family Covered Assets	$29,101
[1]	(1) Excludes securities

FDIC_Loss_Sharing_Asset_FDIC_L3

FDIC Loss Sharing Asset FDIC Loss Sharing Assets (Details Textuals)	3 Months Ended
	Mar. 31, 2015
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC Indemnification rate on covered assets	80.00%
Recovery rate of assuming bank on covered assets	80.00%

Borrowings_Details

Borrowings (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Borrowings	$618,156,000	$383,402,000
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Non-Recourse Debt	3,156,000	3,402,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	6.34%	0.00%
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	0.24%	0.00%
Line of Credit Facility, Amount Outstanding	$615,000,000	$380,000,000

Borrowings_Borrowings_Details_

Borrowings Borrowings (Details 1) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Subordinated Borrowing [Line Items]
Subordinated debentures	$431,448		$433,583
Subordinated Debt Trust V Due September 2033 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	10,310		10,310
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.37%		3.33%
Debt Instrument Date Issued	15-Aug-03
Debt Instrument, Maturity Date	17-Sep-33
Debt Instrument, Basis Spread on Variable Rate	3B month LIBORB +B 3.10
Subordinated Debt Trust VI Due September 2033 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	10,310		10,310
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.32%		3.29%
Debt Instrument Date Issued	3-Sep-03
Debt Instrument, Maturity Date	15-Sep-33
Debt Instrument, Basis Spread on Variable Rate	3B month LIBORB +B 3.05
Subordinated Debt Trust CII Due September 2033 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	5,155		5,155
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.22%		3.19%
Debt Instrument Date Issued	17-Sep-03
Debt Instrument, Maturity Date	17-Sep-33
Debt Instrument, Basis Spread on Variable Rate	3B month LIBORB +B 2.95
Subordinated Debt Trust VII Due April 2034 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	61,856		61,856
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.00%		2.98%
Debt Instrument Date Issued	5-Feb-04
Debt Instrument, Maturity Date	23-Apr-34
Debt Instrument, Basis Spread on Variable Rate	3B month LIBORB +B 2.75
Subordinated Debt Trust CIII Due September 2035 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	20,619		20,619
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	1.96%		1.93%
Debt Instrument Date Issued	15-Aug-05
Debt Instrument, Maturity Date	15-Sep-35
Debt Instrument, Basis Spread on Variable Rate	3B month LIBORB +B 1.69
Subordinated Debt Trust FCCI Due March 2037 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	16,495		16,495
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	1.87%		1.84%
Debt Instrument Date Issued	25-Jan-07
Debt Instrument, Maturity Date	15-Mar-37
Debt Instrument, Basis Spread on Variable Rate	3B month LIBORB +B 1.60
Subordinated Debt Trust FCBI Due December 2035 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	10,310		10,310
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	1.82%		1.79%
Debt Instrument Date Issued	30-Sep-05
Debt Instrument, Maturity Date	15-Dec-35
Debt Instrument, Basis Spread on Variable Rate	3B month LIBORB +B 1.55
Trust Preferred Securities Two Thousand Five Series One [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	82,475		82,475
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.22%		2.19%
Debt Instrument Date Issued	21-Nov-05
Debt Instrument, Maturity Date	15-Dec-35
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Trust Preferred Securities Two Thousand Five Series Two [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	128,866		128,866
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	14-Dec-05
Debt Instrument, Maturity Date	30-Jan-36
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Two Thousand Six One Term Debt Securitization [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	51,545		51,545
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	22-Feb-06
Debt Instrument, Maturity Date	30-Apr-36
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Two Thousand Six Two Term Debt Securitization [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	51,550		51,550
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	27-Sep-06
Debt Instrument, Maturity Date	30-Oct-36
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Trust Preferred Securities Two Thousand Six Series Three [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	27,651	[1]	31,188	[1]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.10%		2.14%
Debt Instrument Date Issued	29-Sep-06
Debt Instrument, Maturity Date	30-Oct-36
Debt Instrument, Basis Spread on Variable Rate	3 month EURIBOR + 2.05
Trust Preferred Securities Two Thousand Six Series Four [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	16,470		16,470
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	5-Dec-06
Debt Instrument, Maturity Date	30-Jan-37
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Trust Preferred Securities Two Thousand Six Series Five [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	6,650		6,650
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	19-Dec-06
Debt Instrument, Maturity Date	30-Jan-37
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Two Thousand Seven One Term Debt Securitization [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	39,177		39,177
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	13-Jun-07
Debt Instrument, Maturity Date	30-Jul-37
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Subordinated Debt [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	539,439		542,976
Debt Instrument, Unamortized Discount	-107,991		-109,393
Subordinated debentures	$431,448		$433,583
[1]	(3) Denomination is in Euros with a value of €25.8 million.

Borrowings_Details_Textual

Borrowings (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Interest-bearing Domestic Deposit, Brokered	$814,900,000	$636,700,000
Brokered Deposits For The Quarter	178,200,000
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Debt Instruments Weighted Average Remaining Maturity Period	2 years 5 months 20 days
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Borrowing Capacity, Description	75,000,000
Line of Credit Facility, Amount Outstanding	0	0
Federal Reserve Bank Advances [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding		0
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	615,000,000	380,000,000
Line of Credit Facility, Current Borrowing Capacity	2,400,000,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity	80,000,000
Unused lines of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	0	0
Certificate of Deposit Account Registry Service Program [Member]
Debt Instrument [Line Items]
Interest-bearing Domestic Deposit, Brokered	46,500,000	44,000,000
Federal Home Loan Bank of San Francisco [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Borrowing Capacity, Description	1,500,000,000
Line of Credit Facility, Amount Outstanding	0
Loans Pledged as Collateral	$2,100,000,000

Commitments_and_Contingencies_1

Commitments and Contingencies Commitments and Contingencies (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Loans and Leases Receivable Commitments	$2,122,749	$1,921,067
Guarantor Obligations, Maximum Exposure, Undiscounted	97,540	88,495
Loans and Leases Receivable, Commitments to Purchase or Sell	23,535	12,839
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	$2,243,824	$2,022,401

Commitments_and_Contingencies_2

Commitments and Contingencies (Details Textual) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Long-term Purchase Commitment [Line Items]
Commitment To Contribute Capital	$13.40	$11
Private Equity Funds [Member]
Long-term Purchase Commitment [Line Items]
Purchase Commitment, Remaining Minimum Amount Committed	$2.80	$2.90
Number of funds	11	11

Fair_Value_Measurements_Detail

Fair Value Measurements (Details 1) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Securities availablebforbsale	$1,595,409	$1,567,177
Derivative Asset, Fair Value of Collateral	9,749	5,234
Derivative Liability, Fair Value of Collateral		118
Level 1
Securities availablebforbsale	524	519
Derivative Asset, Fair Value of Collateral	0	0
Derivative Liability, Fair Value of Collateral		0
Level 2
Securities availablebforbsale	1,561,441	1,532,711
Derivative Asset, Fair Value of Collateral	9,749	5,234
Derivative Liability, Fair Value of Collateral		118
Level 3
Securities availablebforbsale	33,444	33,947
Derivative Asset, Fair Value of Collateral	0	0
Derivative Liability, Fair Value of Collateral		0
Collateralized Loan Obligations [Member]
Securities availablebforbsale		0
Fair Value, Measurements, Recurring [Member]
Securities availablebforbsale	1,595,409	1,567,177
Derivative Asset, Fair Value of Collateral	9,749	5,234
Assets, Fair Value Disclosure, Recurring	1,605,158	1,572,411
Derivative Liability, Fair Value of Collateral		118
Fair Value, Measurements, Recurring [Member] | Level 1
Securities availablebforbsale		519
Derivative Asset, Fair Value of Collateral	0	0
Assets, Fair Value Disclosure, Recurring	524	519
Derivative Liability, Fair Value of Collateral		0
Fair Value, Measurements, Recurring [Member] | Level 2
Securities availablebforbsale		1,532,711
Derivative Asset, Fair Value of Collateral	9,749	5,234
Assets, Fair Value Disclosure, Recurring	1,571,190	1,537,945
Derivative Liability, Fair Value of Collateral		118
Fair Value, Measurements, Recurring [Member] | Level 3
Securities availablebforbsale		33,947
Derivative Asset, Fair Value of Collateral	0	0
Assets, Fair Value Disclosure, Recurring	33,444	33,947
Derivative Liability, Fair Value of Collateral		0
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise pass through securities
Securities availablebforbsale	458,892	535,672
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise pass through securities | Level 1
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise pass through securities | Level 2
Securities availablebforbsale	458,892	535,672
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise pass through securities | Level 3
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member]
Securities availablebforbsale	276,224	277,946
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] | Level 1
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] | Level 2
Securities availablebforbsale	276,224	277,946
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] | Level 3
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Covered private label collateralized mortgage obligation [Member]
Securities availablebforbsale	33,444	33,947
Fair Value, Measurements, Recurring [Member] | Covered private label collateralized mortgage obligation [Member] | Level 1
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Covered private label collateralized mortgage obligation [Member] | Level 2
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Covered private label collateralized mortgage obligation [Member] | Level 3
Securities availablebforbsale	33,444	33,947
Fair Value, Measurements, Recurring [Member] | Other Private Label Collateralized Mortgage Obligations [Member]
Securities availablebforbsale	9,650	10,914
Fair Value, Measurements, Recurring [Member] | Other Private Label Collateralized Mortgage Obligations [Member] | Level 1
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Other Private Label Collateralized Mortgage Obligations [Member] | Level 2
Securities availablebforbsale	9,650	10,914
Fair Value, Measurements, Recurring [Member] | Other Private Label Collateralized Mortgage Obligations [Member] | Level 3
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Municipal securities
Securities availablebforbsale	592,853	536,116
Fair Value, Measurements, Recurring [Member] | Municipal securities | Level 1
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Municipal securities | Level 2
Securities availablebforbsale	592,853	536,116
Fair Value, Measurements, Recurring [Member] | Municipal securities | Level 3
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Securities availablebforbsale	47,745	110,109
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Level 1
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Level 2
Securities availablebforbsale	47,745	110,109
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Level 3
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Collateralized Loan Obligations [Member]
Securities availablebforbsale	113,805
Fair Value, Measurements, Recurring [Member] | Collateralized Loan Obligations [Member] | Level 2
Securities availablebforbsale	113,805
Fair Value, Measurements, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Securities availablebforbsale	37,405	36,757
Fair Value, Measurements, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Level 1
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Level 2
Securities availablebforbsale	37,405	36,757
Fair Value, Measurements, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Level 3
Securities availablebforbsale	0	0
Fair Value, Measurements, Recurring [Member] | Other securities [Member]
Securities availablebforbsale	25,391	25,716
Fair Value, Measurements, Recurring [Member] | Other securities [Member] | Level 1
Securities availablebforbsale	524	519
Fair Value, Measurements, Recurring [Member] | Other securities [Member] | Level 2
Securities availablebforbsale	24,867	25,197
Fair Value, Measurements, Recurring [Member] | Other securities [Member] | Level 3
Securities availablebforbsale	$0	$0

Fair_Value_Measurements_Fair_V

Fair Value Measurements Fair Value Measurements (Details 2) (Level 3, Private Label CMOs, Fair Value, Measurements, Recurring [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Level 3 CMO Roll Forward [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$33,444	$33,947
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	154
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	-109
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	$548
Minimum [Member]
Unobservable Inputs Quantitative Information [Abstract]
Fair Value Inputs, Prepayment Rate	0.00%
Fair Value Inputs, Probability of Default	0.00%
Fair Value Inputs, Loss Severity	0.00%
Fair Value Inputs, Discount Rate	0.00%
Maximum [Member]
Unobservable Inputs Quantitative Information [Abstract]
Fair Value Inputs, Prepayment Rate	34.38%
Fair Value Inputs, Probability of Default	42.67%
Fair Value Inputs, Loss Severity	71.21%
Fair Value Inputs, Discount Rate	22.57%
Weighted Average [Member]
Unobservable Inputs Quantitative Information [Abstract]
Fair Value Inputs, Prepayment Rate	5.70%
Fair Value Inputs, Probability of Default	2.89%
Fair Value Inputs, Loss Severity	30.16%
Fair Value Inputs, Discount Rate	5.58%

Fair_Value_Measurements_Fair_V1

Fair Value Measurements Fair Value Measurements (Details 3) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	$12,280,982	$11,757,951
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	12,278,803	11,755,585
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	60,025	67,274
Fair Value, Measurements, Nonrecurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	2,961	20,766
Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	57,064	46,508
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	59,243	42,693
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Loans Receivable, Fair Value Disclosure	0	0
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		2,366
Loans Receivable, Fair Value Disclosure	2,179	2,366
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	57,064	40,327
Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	782	24,015
Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	0	0
Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	782	18,400
Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		5,615
Cost-method Investments [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		566
Cost-method Investments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Cost-method Investments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Cost-method Investments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		566
Third party appraisals [Domain] | Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	24,159
Third party appraisals [Domain] | Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$0

Fair_Value_Measurements_Fair_V2

Fair Value Measurements Fair Value Measurements (Details 4) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	$12,280,982	$11,757,951
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Net Gain (Loss) from Nonrecurring Assets	-9,316
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Net Gain (Loss) from Nonrecurring Assets	-9,192
Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Net Gain (Loss) from Nonrecurring Assets	($124)

Fair_Value_Measurements_Fair_V3

Fair Value Measurements Fair Value Measurements (Details 5) (Fair Value, Measurements, Nonrecurring [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	60,025	$67,274
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	57,064	46,508
Non Purchased Credit Impaired Loans and Leases [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	59,243	42,693
Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	57,064	40,327
Other real estate and foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	782	24,015
Other real estate and foreclosed assets [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		5,615
Cost-method Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		566
Cost-method Investments [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		566
Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	32,905
Third party appraisals [Domain] | Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	24,159
Third party appraisals [Domain] | Other real estate and foreclosed assets [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	0
Minimum [Member] | Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	0.00%
Minimum [Member] | Market Approach Valuation Technique [Member] | Other real estate and foreclosed assets [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	0.00%
Minimum [Member] | Market Approach Valuation Technique [Member] | Cost-method Investments [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Illiquidity Discount	0.00%
Maximum [Member] | Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	10.46%
Maximum [Member] | Market Approach Valuation Technique [Member] | Other real estate and foreclosed assets [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	0.00%
Maximum [Member] | Market Approach Valuation Technique [Member] | Cost-method Investments [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Illiquidity Discount	0.00%
Weighted Average [Member] | Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	6.29%
Weighted Average [Member] | Market Approach Valuation Technique [Member] | Other real estate and foreclosed assets [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	0.00%
Weighted Average [Member] | Market Approach Valuation Technique [Member] | Cost-method Investments [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Illiquidity Discount	0.00%

Fair_Value_Measurements_Fair_V4

Fair Value Measurements Fair Value Measurements (Details 6) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	$140,873	$164,757
Interest-earning deposits in financial institutions	250,981	148,469
Available-for-sale Securities	1,595,409	1,567,177
Federal Home Loan Bank stock, at cost	28,905	40,609
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	28,905	40,609
Cost Method Investments	3,100	3,691
Cost Method Investments, Fair Value Disclosure	3,534	3,691
Equity Method Investments	21,226	21,461
Equity Method Investments, Fair Value Disclosure	21,475	21,700
Loans and leases, net	12,179,788	11,797,977
Loans Receivable, Fair Value Disclosure	12,280,982	11,757,951
Derivative Asset	9,749	5,234
Derivative Asset, Fair Value of Collateral	9,749	5,234
Deposits, Savings Deposits	6,353,376	6,256,190
Time Deposits	5,580,799	5,498,938
Deposits, Fair Value Disclosure	5,584,088	5,502,479
Borrowed Funds	618,156	383,402
Long-term Debt, Fair Value	618,351	383,539
Subordinated debentures	431,448	433,583
Subordinated Debt Obligations, Fair Value Disclosure	415,210	417,657
Derivative Liability		118
Derivative Liability, Fair Value of Collateral		118
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	140,873	164,757
Interest-earning deposits in financial institutions	250,981	148,469
Available-for-sale Securities	524	519
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	0	0
Cost Method Investments, Fair Value Disclosure	0	0
Equity Method Investments, Fair Value Disclosure	0	0
Derivative Asset, Fair Value of Collateral	0	0
Deposits, Savings Deposits	0	0
Deposits, Fair Value Disclosure	0	0
Long-term Debt, Fair Value	615,000	380,000
Subordinated Debt Obligations, Fair Value Disclosure	0	0
Derivative Liability, Fair Value of Collateral		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	1,561,441	1,532,711
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	28,905	40,609
Cost Method Investments, Fair Value Disclosure	0	0
Equity Method Investments, Fair Value Disclosure	0	0
Derivative Asset, Fair Value of Collateral	9,749	5,234
Deposits, Savings Deposits	6,353,376	6,256,190
Deposits, Fair Value Disclosure	5,584,088	5,502,479
Long-term Debt, Fair Value	3,351	3,539
Subordinated Debt Obligations, Fair Value Disclosure	415,210	417,657
Derivative Liability, Fair Value of Collateral		118
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	33,444	33,947
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	0	0
Cost Method Investments, Fair Value Disclosure	3,534	3,691
Equity Method Investments, Fair Value Disclosure	21,475	21,700
Loans Receivable, Fair Value Disclosure	12,278,803	11,755,585
Derivative Asset, Fair Value of Collateral	0	0
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
Derivative Liability, Fair Value of Collateral		0
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities	1,595,409	1,567,177
Derivative Asset, Fair Value of Collateral	9,749	5,234
Derivative Liability, Fair Value of Collateral		118
Fair Value, Measurements, Recurring [Member] | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities		519
Derivative Asset, Fair Value of Collateral	0	0
Derivative Liability, Fair Value of Collateral		0
Fair Value, Measurements, Recurring [Member] | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities		1,532,711
Derivative Asset, Fair Value of Collateral	9,749	5,234
Derivative Liability, Fair Value of Collateral		118
Fair Value, Measurements, Recurring [Member] | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities		33,947
Derivative Asset, Fair Value of Collateral	0	0
Derivative Liability, Fair Value of Collateral		0
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	0	0
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	$2,179	$2,366

Fair_Value_Measurements_Fair_V5

Fair Value Measurements Fair Value Measurements (Details Textuals) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	$0
Threshold for loans that are considered individually significant for allowance analysis purposes	250,000
Non-PCI nonaccrual loans	139,334,000	83,621,000
Carrying Value of Nonaccrual Loans with Collateral Write-downs	$24,500,000

Earnings_Per_Share_Details_1

Earnings Per Share (Details 1) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014		Mar. 31, 2014
Earnings Per Share [Abstract]
Income (Loss) from Continuing Operations Attributable to Parent	$73,079		$71,057		$25,905
Less: earnings allocated to unvested restricted stock(1)	-819	[1]	-810	[1]	-500	[1]
Net earnings from continuing operations allocated to common shares	72,260		70,247		25,405
Net (loss) earnings from discontinued operations allocated to common shares	0		-57		-804
Net earnings allocated to common shares	$72,260		$70,190		$24,601
Weighted-average basic shares and unvested restricted stock outstanding	103,035		103,045		45,799
Less: weighted-average unvested restricted stock outstanding	-1,122		-1,132		-1,148
Weighted-average basic shares outstanding	101,913		101,913		44,651
Net earnings from continuing operations	$0.71		$0.69		$0.57
Net loss from discontinued operations	$0		$0		($0.02)
Basic net income per share	$0.71		$0.69		$0.55
Net earnings allocated to common shares	72,260		70,190		24,601
Net earnings from continuing operations	$0.71		$0.69		$0.57
Net loss from discontinued operations	$0		$0		($0.02)
Diluted net income per share	$0.71		$0.69		$0.55
[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_Plans1

Stock Based Compensation Plans Stock Based Compensation Plans (Details 1) (USD $)	3 Months Ended	12 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	1,129,445			1,108,505
Vesting period of time-based restricted stock, lower limit	3 years
Vesting period of time-based restricted stock, higher limit	4 years
PacWest 2003 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	19,686,565
Share-based compensation arrangement, number of Shares Authorized due to CapitalSource, Inc Plan	10,686,565
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	13,510,779
Share-based compensation arrangement, Number of Shares Available for Grant due to CapitalSource, Inc Compensation Plan	10,082,099
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	34.6
Restricted Stock [Member] | Vesting Based On Service [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	3.1	$2.80	$1.60

Business_Segment_Business_Segm

Business Segment Business Segments (Details 1) (USD $)	Mar. 31, 2015		Dec. 31, 2014	Mar. 31, 2014	Apr. 07, 2014
In Thousands, unless otherwise specified
Loans and Leases Receivable, Net of Deferred Income	$12,272,166		$11,882,432	$4,161,067
Loans and Leases Receivable, Allowance	-92,378			-81,180
Total loans and leases, net	12,179,788		11,797,977	4,079,887
Goodwill	1,728,380	[1]	1,720,479	208,743
Core deposit and customer relationship intangibles, net	15,703		17,204	15,884
Total assets	16,643,940		16,234,605	6,517,853
Total deposits	11,934,175		11,755,128	5,369,408
Operating Segments [Member] | Community Banking Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	3,349,928			3,707,308
Loans and Leases Receivable, Allowance	-40,906			-74,833
Total loans and leases, net	3,309,022			3,632,475
Goodwill	333,979	[1]		183,065
Core deposit and customer relationship intangibles, net	14,918			14,139
Total assets	6,553,028			5,990,162
Total deposits	12,252,851			5,415,691
Operating Segments [Member] | National Lending Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	8,898,843			453,759
Loans and Leases Receivable, Allowance	-51,472			-6,347
Total loans and leases, net	8,847,371			447,412
Goodwill	1,394,401	[1]		25,678
Core deposit and customer relationship intangibles, net	785			1,745
Total assets	9,905,563			517,126
Total deposits	35,847			0
Operating Segments [Member] | Other Segments [Member]
Loans and Leases Receivable, Net of Deferred Income	23,395			0
Loans and Leases Receivable, Allowance	0			0
Total loans and leases, net	23,395			0
Goodwill	0	[1]		0
Core deposit and customer relationship intangibles, net	0			0
Total assets	185,349			10,565
Total deposits	-354,523			-46,283
Capitalsource, Inc. [Member]
Goodwill					$1,526,282
[1]	The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

Business_Segments_Details_2

Business Segments (Details 2) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Segment Reporting Information [Line Items]
Interest Income	$214,314	$209,696	$88,360
Interest expense	-15,239	-14,713	-2,345
Intersegment interest income (expense), net	0	0	0
Net interest income	199,075	194,983	86,015
Provision for Loan, Lease, and Other Losses	-16,434	-2,063	644
Gain on securities	3,275	0	4,752
FDIC loss sharing expense, net	-4,399	-4,360	-11,430
Other noninterest income	21,995	17,063	11,369
Total noninterest income	20,871	12,703	4,691
Foreclosed assets (expense) income, net	-336	-1,938	1,861
Intangible asset amortization	-1,501	-1,619	-1,364
Acquisition, integration and reorganization costs	-2,000	-7,381	-2,200
Other noninterest expense	-80,523	-80,367	-48,461
Total noninterest expense	-84,360	-91,305	-50,164
Intersegment noninterest income, net	0	0
Total noninterest expense, adjusted for intersegment noninterest net income	-84,360	-91,305
Earnings (loss) from continuing operations before taxes	119,152	114,318	41,186
Income Tax Expense (Benefit)	-46,073	-43,261	-15,281
Net income before income taxes		71,057	25,905
Loss from discontinued operations before taxes	0	-105	-1,413
Income tax benefit	0	47	588
Net loss from discontinued operations	0	-58	-825
Net earnings	73,079	70,999	25,080
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net earnings			25,080
Operating Segments [Member] | National Lending Segment [Member]
Segment Reporting Information [Line Items]
Interest Income	151,219	144,546	10,765
Interest expense	-53	-46	-77
Intersegment interest income (expense), net	-6,721	-6,173	-222
Net interest income	144,445	138,327	10,466
Provision for Loan, Lease, and Other Losses	-24,406	-11,816	-182
Gain on securities	0		0
FDIC loss sharing expense, net	0	0	0
Other noninterest income	5,142	7,330	4,445
Total noninterest income	5,142	7,330	4,445
Foreclosed assets (expense) income, net	-61	-18	0
Intangible asset amortization	-112	-112	-173
Acquisition, integration and reorganization costs	0	0	0
Other noninterest expense	-22,837	-24,526	-6,573
Total noninterest expense	-23,010	-24,656	-6,746
Intersegment noninterest income, net	-26,563	-21,953
Total noninterest expense, adjusted for intersegment noninterest net income	-49,573	-46,609
Earnings (loss) from continuing operations before taxes	75,608	87,232	7,983
Income Tax Expense (Benefit)	-29,282	-34,781	-3,331
Net income before income taxes		52,451	4,652
Loss from discontinued operations before taxes		0	0
Income tax benefit		0	0
Net loss from discontinued operations		0	0
Net earnings	46,326	52,451	4,652
Operating Segments [Member] | Other Segments [Member]
Segment Reporting Information [Line Items]
Interest Income	139	183	0
Interest expense	-4,525	-4,598	-1,041
Intersegment interest income (expense), net	0	0	0
Net interest income	-4,386	-4,415	-1,041
Provision for Loan, Lease, and Other Losses	-92	0	0
Gain on securities	0		0
FDIC loss sharing expense, net	0	0	0
Other noninterest income	7,278	2,708	27
Total noninterest income	7,278	2,708	27
Foreclosed assets (expense) income, net	-231	366	0
Intangible asset amortization	0	0	0
Acquisition, integration and reorganization costs	-110	0	0
Other noninterest expense	-2,481	-4,236	-1,603
Total noninterest expense	-2,822	-3,870	-1,603
Intersegment noninterest income, net	0	0
Total noninterest expense, adjusted for intersegment noninterest net income	-2,822	-3,870
Earnings (loss) from continuing operations before taxes	-22	-5,577	-2,617
Income Tax Expense (Benefit)	82	5,171	1,089
Net income before income taxes		-406	-1,528
Loss from discontinued operations before taxes		0	0
Income tax benefit		0	0
Net loss from discontinued operations		0	0
Net earnings	60	-406	-1,528
Operating Segments [Member] | Community Banking Segment [Member]
Segment Reporting Information [Line Items]
Interest Income	62,956	64,967	77,595
Interest expense	-10,661	-10,069	-1,227
Intersegment interest income (expense), net	6,721	6,173	222
Net interest income	59,016	61,071	76,590
Provision for Loan, Lease, and Other Losses	8,064	9,753	826
Gain on securities	3,275		4,752
FDIC loss sharing expense, net	-4,399	-4,360	-11,430
Other noninterest income	9,575	7,025	6,897
Total noninterest income	8,451	2,665	219
Foreclosed assets (expense) income, net	-44	-2,286	1,861
Intangible asset amortization	-1,389	-1,507	-1,191
Acquisition, integration and reorganization costs	-1,890	-7,381	-2,200
Other noninterest expense	-55,205	-51,605	-40,285
Total noninterest expense	-58,528	-62,779	-41,815
Intersegment noninterest income, net	26,563	21,953
Total noninterest expense, adjusted for intersegment noninterest net income	-31,965	-40,826
Earnings (loss) from continuing operations before taxes	43,566	32,663	35,820
Income Tax Expense (Benefit)	-16,873	-13,651	-13,039
Net income before income taxes		19,012	22,781
Loss from discontinued operations before taxes		-105	-1,413
Income tax benefit		47	588
Net loss from discontinued operations		-58	-825
Net earnings	$26,693	$18,954	$21,956

Subsequent_Events_Subsequent_E

Subsequent Events Subsequent Events (Details 1)	3 Months Ended
	Mar. 31, 2015
Subsequent Event [Line Items]
Subsequent Event, Description	0

Uncategorized_Items

Uncategorized Items
[us-gaap_SharesOutstanding]	103,022,017