Columbia Banking System (COLB) 10-K3 Mar 142013 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
Document and Entity Information (USD $)	Dec. 31, 2013	Jan. 31, 2014	Jun. 30, 2013
Document Information [Line Items]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Entity Registrant Name	'COLUMBIA BANKING SYSTEM INC	'	'
Entity Central Index Key	'0000887343	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	51,282,776	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$1,204,816,739

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
ASSETS	'		'
Cash and due from banks	$165,030		$124,573
Interest-earning deposits with banks	14,531		389,353
Total cash and cash equivalents	179,561		513,926
Securities available for sale at fair value (amortized cost of $1,680,491 and $969,359, respectively)	1,664,111		1,001,665
Federal Home Loan Bank stock at cost	32,529		21,819
Loans held for sale	735		2,563
Loans, net	4,444,842		2,864,803
FDIC loss sharing asset	39,846		96,354
Interest receivable	22,206		14,268
Premises and equipment, net	154,732		118,708
Other real estate owned ($12,093 and $16,311 covered by FDIC loss share, respectively)	35,927		26,987
Goodwill	343,952		115,554
Core deposit intangible, net	25,852		15,721
Other assets	217,289		113,967
Total Assets	7,161,582		4,906,335
LIABILITIES AND SHAREHOLDERS' EQUITY	'		'
Noninterest-bearing	2,171,703		1,321,171
Interest-bearing	3,787,772		2,720,914
Total deposits	5,959,475		4,042,085
Federal Home Loan Bank advances	36,606		6,644
Securities sold under agreements to repurchase	25,000		25,000
Other liabilities	87,252		68,598
Total liabilities	6,108,333		4,142,327
Commitments and contingent liabilities	'		'
Preferred Stock, Shares Authorized	2,000		0
Preferred Stock, Shares Issued	9		0
Preferred Stock, Value, Issued	2,217		0
Shareholders' equity:	'		'
Authorized shares	63,033		63,033
Common Stock Shares Issued And Outstanding	51,265		39,686
Common Stock (no par value)	860,562		581,471
Retained earnings	202,514		162,388
Accumulated Other Comprehensive Income (Loss), Net of Tax	-12,044	[1]	20,149	[1]
Total shareholders' equity	1,053,249		764,008
Total Liabilities and Shareholders' Equity	7,161,582		4,906,335
Noncovered Loans [Member]	'		'
ASSETS	'		'
Loans held for sale	735		2,563
Loans, excluding covered loans, net of unearned income of ($68,282) and ($7,767), respectively	4,219,451		2,525,710
Loans and Leases Receivable, Allowance	52,280		52,244
Loans, net	4,167,171		2,473,466
Other real estate owned ($12,093 and $16,311 covered by FDIC loss share, respectively)	23,834		10,676
Covered Loans [Member]	'		'
ASSETS	'		'
Loans and Leases Receivable, Allowance	20,174		30,056
Loans, net	277,671		391,337
Other real estate owned ($12,093 and $16,311 covered by FDIC loss share, respectively)	$12,093		$16,311

[1]	(1) All amounts are net of tax. Amounts in parenthesis indicate debits.

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Securities available-for-sale, amortized cost	$1,680,491	$969,359
Other real estate owned covered by FDIC loss share	35,927	26,987
Common stock, par value	$0	$0
Common stock, shares authorized	63,033	63,033
Common stock, outstanding	51,265	39,686
Noncovered Loans [Member]	'	'
Unearned income on loans	-68,282	-7,767
Allowance for losses	-52,280	-52,244
Other real estate owned covered by FDIC loss share	23,834	10,676
Covered Loans [Member]	'	'
Allowance for losses	-20,174	-30,056
Other real estate owned covered by FDIC loss share	$12,093	$16,311

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Interest Income	'		'		'
Loans	$266,284		$219,433		$218,420
Taxable securities	20,459		18,276		21,870
Tax-exempt securities	9,837		9,941		10,142
Federal funds sold and deposits in banks	355		854		839
Total interest income	296,935		248,504		251,271
Interest Expense	'		'		'
Deposits	3,962		5,887		10,478
Federal Home Loan Bank and Federal Reserve Bank borrowings	-404		2,608		2,980
Prepayment charge on Federal Home Loan Bank advances	1,548		603		0
Long-term obligations	0		0		579
Other borrowings	734		479		498
Total interest expense	5,840		9,577		14,535
Net Interest Income	291,095		238,927		236,736
Provision (recapture) for loan and lease losses	-101		39,367		5,752
Net interest income after provision (recapture) for loan and lease losses	291,196		199,560		230,984
Noninterest Income (Loss)	'		'		'
Service charges and other fees	48,351		29,998		26,632
Gain on bank acquisitions, net of tax	0		0		1,830
Merchant services fees	8,812		8,154		7,385
Gain on sale of investment securities, net	462		3,733		-2,816
Bank owned life insurance	3,570		2,861		2,188
Change in FDIC loss sharing asset	-45,017		-24,467		-49,496
Other	10,522		6,779		4,994
Total noninterest income (loss)	26,700		27,058		-9,283
Noninterest Expense	'		'		'
Compensation and employee benefits	125,432		85,434		81,552
Occupancy	33,054		20,031		18,963
Merchant processing	3,551		3,612		3,698
Advertising and promotion	4,090		3,650		3,686
Data processing	14,076		9,714		8,484
Legal and professional fees	12,338		8,915		6,486
Taxes, licenses and fees	5,033		4,736		4,446
Regulatory premiums	4,706		3,384		4,337
Net cost (benefit) of operation of other real estate owned	-7,401		-1,969		-1,022
Amortization of intangibles	6,045		4,445		4,319
FDIC clawback liability	278		-54		3,656
Other	29,684		21,015		17,154
Total noninterest expense	230,886		162,913		155,759
Income (loss) before income taxes	87,010		63,705		65,942
Provision (benefit) for income taxes	26,994		17,562		17,905
Net Income (Loss)	60,016		46,143		48,037
Per Common Share	'		'		'
Earnings (loss) basic (dollars per share)	$1.24	[1]	$1.16	[1]	$1.22
Earnings (loss) diluted (dollars per share)	$1.21	[1]	$1.16	[1]	$1.21
Common Stock, Dividends, Per Share, Cash Paid	$0.41		$0.98		$0.27
Weighted average number of common shares outstanding	47,993		39,260		39,103
Weighted average number of diluted common shares outstanding	49,051		39,263		39,180
Noncovered Loans [Member]	'		'		'
Interest Expense	'		'		'
Provision (recapture) for loan and lease losses	3,160		13,475		7,400
Covered Loans [Member]	'		'		'
Interest Expense	'		'		'
Provision (recapture) for loan and lease losses	($3,261)		$25,892		($1,648)

[1]	Due to averaging of shares, quarterly earnings per share may not add up to the totals reported for the full year.

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Net income (loss)	$60,016		$46,143	$48,037
Unrealized gain from securities:	'		'	'
Net unrealized holding gain from available for sale securities arising during the period, net of tax of $17,498, $1,902 and ($7,462)	-30,727		-2,609	13,285
Reclassification adjustment of net gain from sale of available for sale securities included in income, net of tax of $163, $1,316 and $48	-299		-2,417	-85
Net unrealized gain from securities, net of reclassification adjustment	-31,026		-5,026	13,200
Cash flow hedging instruments:	'		'	'
Reclassification adjustment of net gain included in income, net of tax of $0, $0 and $79	0		0	-143
Net change in cash flow hedging instruments	0		0	-143
Pension plan liability adjustment:	'		'	'
Unrecognized net actuarial gain (loss) during the period, net of tax of $780, $0 and $154	-1,432		0	-260
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, net of tax of ($135), ($38) and ($31)	265		42	55
Pension plan liability adjustment, net	-1,167		42	-205
Other comprehensive income	-32,193	[1]	-4,984	12,852
Comprehensive income	$27,823		$41,159	$60,889

[1]	(1) All amounts are net of tax. Amounts in parenthesis indicate debits.

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net unrealized holding gain from available for sale securities arising during the period, tax	($17,498)	($1,902)	$7,462
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax	163	1,316	48
Reclassification adjustment of net gain included in income, tax	0	0	79
Net unrealized gain from unfunded defined benefit plan liability arising during the period, tax	780	0	154
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, tax	($135)	($38)	($31)

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Shareholders' Equity (USD $)	Total	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Series B Preferred Stock [Member]
In Thousands, except Share data	Total	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Series B Preferred Stock [Member]
Balance, value at Dec. 31, 2010	$706,878	$0	$576,905	$117,692	$12,281	'
Balance (in shares) at Dec. 31, 2010	'	0	39,338,000	'	'	'
Common Stock, Dividends, Per Share, Cash Paid	$0.27	'	'	'	'	'
Net income (loss)	48,037	'	'	48,037	'	'
Other comprehensive income	12,852	'	'	'	12,852	'
Issuance of common stock - stock option and other plans, value	848	'	848	'	'	'
Issuance of common stock - stock option and other plans, shares	'	'	51,000	'	'	'
Issuance of common stock - restricted stock awards, net of canceled awards, value	1,635	'	1,635	'	'	'
Issuance of common stock - restricted stock awards, net of canceled awards, shares	'	'	119,000	'	'	'
Tax benefit deficiency associated with share-based compensation	'	'	-220	'	'	'
Purchase and retirement of common stock (in shares)	'	'	2,000	'	'	'
Purchase and retirement of common stock, value	-32	'	32	'	'	'
Preferred dividends	'	'	'	0	'	'
Cash dividends paid on common stock	-10,660	'	'	-10,660	'	'
Preferred Stock, Dividends, Per Share, Cash Paid	$0	'	'	'	'	'
Balance, value at Dec. 31, 2011	759,338	0	579,136	155,069	25,133	'
Balance (in shares) at Dec. 31, 2011	'	0	39,506,000	'	'	'
Common Stock, Dividends, Per Share, Cash Paid	$0.98	'	'	'	'	'
Net income (loss)	46,143	'	'	46,143	'	'
Other comprehensive income	-4,984	'	'	'	-4,984	'
Issuance of common stock - stock option and other plans, value	713	'	713	'	'	'
Issuance of common stock - stock option and other plans, shares	'	'	40,000	'	'	'
Issuance of common stock - restricted stock awards, net of canceled awards, value	1,622	'	1,622	'	'	'
Issuance of common stock - restricted stock awards, net of canceled awards, shares	'	'	140,000	'	'	'
Cash dividends paid on common stock	-38,824	'	'	-38,824	'	'
Preferred Stock, Dividends, Per Share, Cash Paid	$0	'	'	'	'	'
Balance, value at Dec. 31, 2012	764,008	0	581,471	162,388	20,149	'
Balance (in shares) at Dec. 31, 2012	'	0	39,686,000	'	'	'
Common Stock, Dividends, Per Share, Cash Paid	$0.41	'	'	'	'	'
Net income (loss)	60,016	'	'	60,016	'	'
Other comprehensive income	-32,193	'	'	'	-32,193	'
Issuance of common stock, net of offering costs, value	276,181	'	273,964	'	'	2,217
Stock Adjustment Value Deferred Compensation	517	'	'	'	'	'
Issuance of common stock, net of offering costs, shares	'	'	11,380,000	'	'	9,000
Issuance of common stock - stock option and other plans, value	1,243	'	1,243	'	'	'
Issuance of common stock - stock option and other plans, shares	36,037	'	73,000	'	'	'
Issuance of common stock - restricted stock awards, net of canceled awards, value	2,693	'	2,693	'	'	'
Issuance of common stock - restricted stock awards, net of canceled awards, shares	'	'	144,000	'	'	'
Tax benefit deficiency associated with share-based compensation	1,103	'	1,103	'	'	'
Purchase and retirement of common stock (in shares)	'	'	-18,000	'	'	'
Purchase and retirement of common stock, value	-429	'	-429	'	'	'
Dividends, Preferred Stock, Cash	-32	'	'	'	'	'
Cash dividends paid on common stock	-19,858	'	'	-19,858	'	'
Preferred Stock, Dividends, Per Share, Cash Paid	$0.31	'	'	'	'	'
Balance, value at Dec. 31, 2013	$1,053,249	$2,217	$860,562	$202,514	($12,044)	'
Balance (in shares) at Dec. 31, 2013	'	9,000	51,265,000	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash Flows From Operating Activities	'	'	'
Net Income (Loss)	$60,016	$46,143	$48,037
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Provision for loan and lease losses and losses on covered loans	-101	39,367	5,752
Stock-based compensation expense	2,844	1,622	1,635
Depreciation, amortization and accretion	40,431	57,305	46,121
Net realized gain on FDIC assisted bank acquisitions	0	0	-1,830
Net realized gain on sale of securities	-462	-3,733	2,816
Net realized (gain) loss on sale of other assets	-48	-456	79
Net realized (gain) loss on sale of other real estate owned	-10,539	-11,634	-9,310
Gain on termination of cash flow hedging instruments	0	0	-222
Write-down on other real estate owned	2,035	8,300	6,307
Deferred income tax expense (benefit)	5,413	-3,656	-3,783
Net change in:	'	'	'
Loans held for sale	1,828	-415	-1,394
Interest receivable	-7,938	1,019	-1,243
Interest payable	-122	-629	-403
Other assets	-3,385	-2,113	-19,248
Other liabilities	-10,336	3,779	13,110
Net cash provided by operating activities	79,636	134,899	86,424
Cash Flows From Investing Activities	'	'	'
Loans originated and acquired, net of principal collected	161,827	92,088	110,577
Purchases of securities available for sale	-457,985	-322,342	-453,043
Purchases of premises and equipment	-13,133	-17,137	-15,088
Proceeds from FDIC reimbursement on loss-sharing asset	9,246	54,649	54,200
Proceeds from sales of securities available for sale	166,881	95,165	72,523
Proceeds from principal repayments and maturities of securities available for sale	293,940	236,749	148,583
Proceeds from sales of loans held for investment and other assets	4,031	4,414	46
Proceeds from sales of covered other real estate owned	22,046	33,315	20,619
Proceeds from sales of other real estate and other personal property owned	14,407	15,689	12,278
Proceeds from termination of trust subsidiaries	0	0	774
Capital improvements on other real estate properties	-3,577	-11	-735
Increase (decrease) in Small Business Administration secured borrowings	0	0	-642
Payments to Acquire Intangible Assets	-919	0	0
Net cash acquired in business combinations	-154,170	0	247,792
Net cash (used in) provided by investing activities	-281,060	8,403	-23,270
Cash Flows From Financing Activities	'	'	'
Net increase (decrease) in deposits	33,983	226,556	-204,586
Proceeds from exercise of stock options	1,092	713	848
Proceeds from excess tax benefit from stock-based compensation	1,203	0	98
Proceeds from Federal Home Loan Bank advances	1,215,100	100	100
Proceeds from Federal Reserve Bank borrowings	50	100	100
Repayment of Federal Home Loan Bank advances	-1,313,000	-112,210	-42,989
Repayment of Federal Reserve Bank borrowings	-50	-100	-100
Payment of preferred stock dividends	-32	0	0
Payment of common stock dividends	-19,858	-38,824	-10,660
Repayment of long-term subordinated debt	-51,000	0	-25,774
Payment for purchase and retirement of common stock	-429	0	-32
Net cash used in financing activities	-132,941	76,335	-282,995
Increase (decrease) in cash and cash equivalents	-334,365	219,637	-219,841
Cash and cash equivalents at beginning of period	513,926	294,289	514,130
Cash and cash equivalents at end of period	179,561	513,926	294,289
Supplemental Information:	'	'	'
Cash paid for interest	5,962	10,206	14,938
Cash paid for income tax	26,754	11,927	23,025
Non-cash investing activities	'	'	'
Assets acquired in FDIC assisted acquisitions (excluding cash and cash equivalents)	0	0	485,870
Liabilities assumed in FDIC assisted acquisitions	0	0	731,832
Loans transferred to other real estate owned	18,100	21,627	24,357
Stock Issued	$276,181	$0	$0

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	Summary of Significant Accounting Policies
	Organization
	Columbia Banking System, Inc. (the “Corporation”) is the holding company for Columbia State Bank (the “Bank”) and West Coast Trust Company, Inc. ("West Coast Trust"). The Bank provides a full range of financial services through 142 branch locations, including 80 in the State of Washington and 62 in Oregon. West Coast Trust provides fiduciary, agency, trust and related services, and life insurance products. Because the Bank comprises substantially all of the business of the Corporation, references to the “Company” mean the Corporation and the Bank together. The Corporation is approved as a bank holding company pursuant to the Gramm-Leach-Bliley Act of 1999.
	The Company’s accounting and reporting policies conform to accounting principles generally accepted in the United States of America (“GAAP”) and practices in the financial services industry. To prepare the financial statements in conformity with GAAP, management must make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements, and income and expenses during the reporting period. Circumstances and events that differ significantly from those underlying our estimates and assumptions could cause actual financial results to differ from our estimates. The most significant estimates included in the financial statements relate to the allowance for loan and lease losses, business combinations, acquired impaired loans, Federal Deposit Insurance Corporation loss sharing asset and goodwill impairment.
	The Company has applied its accounting policies and estimation methods consistently in all periods presented in these financial statements (to the periods in which they applied), except for the adoption of Accounting Standards Update ("ASU") 2012-06 as noted below under the heading "Accounting Pronouncements."
	Consolidation
	The consolidated financial statements of the Company include the accounts of the Corporation and its subsidiaries, including the Bank and West Coast Trust. Intercompany balances and transactions have been eliminated in consolidation.
	Cash and cash equivalents
	Cash and cash equivalents include cash and due from banks, and interest bearing balances due from correspondent banks and the Federal Reserve Bank. Cash and cash equivalents have a maturity of 90 days or less at the time of purchase.
	Securities
	Securities are classified based on management’s intention on the date of purchase. All securities are classified as available for sale and are presented at fair value. Unrealized gains or losses on securities available for sale are excluded from net income but are included as separate components of other comprehensive income, net of taxes. Purchase premiums or discounts on securities available for sale are amortized or accreted into income using the interest method over the terms of the individual securities. The Company performs a quarterly assessment to determine whether a decline in fair value below amortized cost is other-than-temporary. Amortized cost includes adjustments made to the cost of an investment for accretion, amortization, collection of cash and previous other-than temporary impairment recognized in earnings. Other-than-temporary impairment exists when it is probable that the Company will be unable to recover the entire amortized cost basis of the security.
	In performing the quarterly assessment for debt securities, management considers whether or not the Company expects to recover the entire amortized cost basis of the security. In addition, management also considers whether it is more likely than not that it will not have to sell the security before recovery of its cost basis. If the Company intends to sell a security or it is more likely than not it will be required to sell a security prior to recovery of its cost basis, the entire amount of impairment is recognized in earnings. If the Company does not intend to sell the security or it is not more likely than not it will be required to sell the security prior to recovery of its cost basis, the credit loss component of impairment is recognized in earnings and impairment associated with non-credit factors, such as market liquidity, is recognized in other comprehensive income net of tax. A credit loss is the difference between the cost basis of the security and the present value of cash flows expected to be collected, discounted at the security's effective interest rate at the date of acquisition. The cost basis of an other-than-temporarily impaired security is written down by the amount of impairment recognized in earnings. The new cost basis is not adjusted for subsequent recoveries in fair value. However, the difference between the new amortized cost basis and the cash flows expected to be collected is accreted as interest income. The total other-than-temporary impairment is presented in the consolidated statements of income with a reduction for the amount of other-than-temporary impairment that is recognized in other comprehensive income, if any.
	Realized gains or losses on sales of securities available for sale are recorded using the specific identification method.
	Federal Home Loan Bank Stock
	The Company’s investment in Federal Home Loan Bank (“FHLB”) stock is carried at par value because the shares can only be redeemed with the FHLB at par. The Company is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages and FHLB advances. Stock redemptions are at the discretion of the FHLB or of the Company, upon five years’ prior notice for FHLB Class B stock or six months notice for FHLB Class A stock to the FHLB. FHLB stock is carried at cost and is subject to recoverability testing per the Financial Services—Depository and Lending topic of the FASB Accounting Standards Codification (“ASC”).
	Loans
	Loans are generally carried at the unpaid principal balance, net of premiums, unearned discounts and net deferred loan fees. Net deferred loan fees include deferred unamortized fees less direct incremental loan origination costs. Net deferred loan fees, premiums and unearned discounts on loans are recognized in interest income using either the interest method or straight-line method over the terms of the loans, adjusted for actual prepayments. Interest income is accrued as earned. Fees related to lending activities other than the origination or purchase of loans are recognized as noninterest income during the period the related services are performed.
	Nonaccrual loans—Loans are placed on nonaccrual status when a loan becomes contractually past due 90 days with respect to interest or principal unless the loan is both well secured and in the process of collection, or if full collection of interest or principal becomes uncertain. When a loan is placed on nonaccrual status, any accrued and unpaid interest receivable is reversed and the recognition of net deferred loan fees, premiums and unearned discounts ceases. Thereafter, interest collected on the loan is accounted for on the cash collection or cost recovery method until qualifying for return to accrual status. Generally, a loan may be returned to accrual status when the delinquent principal and interest are brought current in accordance with the terms of the loan agreement for a minimum period of six months and future payments are reasonably assured.
	Impaired loans—Loans are considered impaired when based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement or when a loan has been modified in a troubled debt restructuring. The assessment for impairment occurs when and while such loans are designated as classified per the Company’s internal risk rating system or when and while such loans are on nonaccrual. All nonaccrual loans greater than $500,000 are considered impaired and analyzed individually on a quarterly basis. Classified loans with an outstanding balance greater than $500,000 are evaluated for potential impairment on a quarterly basis.
	When a loan with unique risk characteristics has been identified as being impaired, the amount of impairment will be measured by the Company using discounted cash flows, except when it is determined that the primary (remaining) source of repayment for the loan is the operation or liquidation of the underlying collateral. In these cases, the current fair value of the collateral, reduced by costs to sell, will be used in place of discounted cash flows. As a final alternative, the observable market price of the debt may be used to assess impairment. Predominantly, the Company uses the fair value of collateral approach based upon a reliable valuation.
	When the measurement of the impaired loan is less than the recorded amount of the loan, an impairment is recognized by recording a charge-off to the allowance for loan and lease losses or by designating a specific reserve. The Company’s policy is to record cash receipts received on impaired loans first as reductions to principal and then to interest income.
	Restructured Loans—A loan is classified as a troubled debt restructuring when a borrower is experiencing financial difficulties that lead to a restructuring of the loan, and the Company grants concessions to the borrower in the restructuring that it would not otherwise consider. These concessions may include interest rate reductions, principal forgiveness, extension of maturity date and other actions intended to minimize potential losses. Generally, a nonaccrual loan that is restructured remains on nonaccrual status for a period of six months to demonstrate that the borrower can meet the restructured terms. If the borrower's performance under the new terms is not reasonably assured, the loan remains classified as a nonaccrual loan.
	Acquired Impaired Loans—Loans acquired with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are accounted for under ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality, formerly SOP 03-3 Accounting for Certain Loans or Debt Securities Acquired in a Transfer. In addition, because of the significant discounts associated with certain of the acquired loan portfolios, the Company elected to account for those certain acquired loans under ASC 310-30.
	In situations where such loans have similar risk characteristics, loans are aggregated into pools to estimate cash flows. A pool is accounted for as a single asset with a single interest rate, cumulative loss rate and cash flow expectation. Expected cash flows at the acquisition date in excess of the fair value of loans are considered to be accretable yield, which is recognized as interest income over the life of the loan pool using a level yield method if the timing and amount of the future cash flows of the pool is reasonably estimable. Subsequent to the acquisition date, any increases in cash flow over those expected at purchase date in excess of fair value are recorded as interest income prospectively. Any subsequent decreases in cash flow over those expected at purchase date due to credit deterioration are recognized by recording an allowance for losses on covered loans. Any disposals of loans, including sales of loans, payments in full or foreclosures result in the removal of the loan from the loan pool at the carrying amount.
	Covered Loans—The term covered loans refers to acquired loans that are covered under a loss-sharing agreement with the FDIC. At December 31, 2013, approximately 96% of covered loans were subject to an FDIC loss-sharing agreements and approximately 90% were accounted for as acquired, impaired loans. See Acquired Impaired Loans for further discussion.
	Unfunded loan commitments—Unfunded commitments are generally related to providing credit facilities to clients of the Bank and are not actively traded financial instruments. These unfunded commitments are disclosed as financial instruments with off-balance sheet risk in Note 16 in the Notes to Consolidated Financial Statements.
	Allowance for Loan and Lease Losses
	The Company accounts for the credit risk associated with lending activities through its allowance for loan and lease losses and provision for loan and lease losses. The provision is the expense recognized in the consolidated statements of income to adjust the allowance to the levels deemed appropriate by management, as determined through application of the Company’s allowance methodology procedures. The provision for loan and lease losses reflects management’s judgment of the adequacy of the allowance for loan and lease losses. Loan and lease losses are charged against the allowance when management believes the collectability of a loan balance is unlikely. Subsequent recoveries, if any, are credited to the allowance.
	The allowance for loan and lease losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, and estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.
	The allowance consists of general, specific, and unallocated components. The general component covers loans not specifically measured for impairment and is based on historical loss experience adjusted for qualitative factors. The specific component relates to loans that are impaired. For impaired loans an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. The unallocated allowance provides for other credit losses inherent in the Company’s loan portfolio that may not have been contemplated in the general and specific components of the allowance. This unallocated amount generally comprises less than 5% of the allowance. The unallocated amount is reviewed periodically based on trends in credit losses, the results of credit reviews and overall economic trends.
	Allowance for Unfunded Commitments and Letters of Credit
	The allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb estimated probable losses related to these unfunded credit facilities. The determination of the adequacy of the allowance is based on periodic evaluations of the unfunded credit facilities including an assessment of the probability of commitment usage, credit risk factors for loans outstanding to these same customers, and the terms and expiration dates of the unfunded credit facilities. The allowance for unfunded commitments is included in other liabilities on the consolidated balance sheets, with changes to the balance charged against noninterest expense.
	Allowance for Loan Losses on Covered Loans
	The Company updates its cash flow projections for covered loans accounted for under ASC 310-30 on a quarterly basis. Assumptions utilized in this process include projections related to probability of default, loss severity, prepayment and recovery lag. Projections related to probability of default and prepayment are calculated utilizing a loan migration analysis. The loan migration analysis is a matrix of probability that is used to estimate the probability of a loan pool transitioning into a particular delinquency state given its delinquency state at the remeasurement date. Loss severity factors are based upon either actual charge-off data within the loan pools or industry averages and recovery lags are based upon the collateral within the loan pools.
	Any decreases in expected cash flows after the acquisition date and subsequent measurement periods are recognized by recording a provision for loan losses. See Acquired Impaired Loans for further discussion.
	Premises and Equipment
	Land, buildings, leasehold improvements and equipment are stated at cost less accumulated depreciation and amortization. Gains or losses on dispositions are reflected in current operations. Expenditures for improvements and major renewals are capitalized, and ordinary maintenance, repairs and small purchases are charged to operating expenses. Depreciation and amortization are computed based on the straight-line method over the estimated useful lives of the various classes of assets. The ranges of useful lives for the principal classes of assets are as follows:


	Buildings and building improvements	5 to 39 years
	Leasehold improvements	Term of lease or useful life, whichever is shorter
	Furniture, fixtures and equipment	3 to 7 years
	Vehicles	5 years
	Computer software	3 to 5 years
	Software
	Capitalized software is stated at cost, less accumulated amortization. Amortization is computed on a straight-line basis and charged to expense over the estimated useful life of the software which is generally three years. Capitalized software is included in Premises and equipment, net in the Consolidated Balance Sheets.
	Other Real Estate Owned
	Other real estate owned (“OREO”) is composed of real estate acquired in satisfaction of loans. Properties acquired by foreclosure or deed in lieu of foreclosure are transferred to OREO and are recorded at fair value less estimated costs to sell, at the date of transfer of the property. If the carrying value exceeds the fair value at the time of the transfer, the difference is charged to the allowance for loan and lease losses. The fair value of the OREO property is based upon current appraisal. Losses that result from the ongoing periodic valuation of these properties are charged to the net cost of operation of OREO in the period in which they are identified. Improvements to the OREO are capitalized and holding costs are charged to the net cost of operation of OREO as incurred.
	Covered OREO—Covered OREO includes acquired OREO that is covered under a loss-sharing agreement with the FDIC. These assets were recorded at their fair value on acquisition date. Covered OREO is reported in Other real estate owned in the Consolidated Balance Sheets. Covered OREO is reported exclusive of expected reimbursement cash flows from the FDIC. Upon transferring covered loan collateral to covered OREO status, valuation adjustments arising from acquisition accounting on the related loan are also transferred to covered OREO. Valuation adjustments arising from acquisition accounting on covered OREO result in a reduction of the covered OREO carrying amount and a corresponding increase in the expected FDIC reimbursement, with the estimated net loss to the Company, if any, charged against earnings.
	FDIC Loss-sharing Asset
	The acquisition date fair value of the reimbursement the Company expected to receive from the FDIC under loss-sharing agreements was recorded in the FDIC loss-sharing asset on the Consolidated Balance Sheet. Subsequent to initial recognition, the FDIC loss-sharing asset is reviewed quarterly and adjusted for any changes in expected cash flows. These adjustments are measured on the same basis as the related covered assets. Any decrease in expected cash flows for the covered assets due to an increase in expected credit losses will increase the FDIC loss-sharing asset and any increase in expected future cash flows for the covered assets due to a decrease in expected credit losses will decrease the FDIC loss-sharing asset. Changes in the estimated cash flows on covered assets that are immediately recognized in income generally result in a similar immediate adjustment to the loss-sharing asset while changes in expected cash flows on covered assets that are accounted for as an adjustment to yield generally result in adjustments to the amortization or accretion rate for the loss-sharing asset. Increases and decreases to the FDIC loss-sharing asset are recorded as adjustments to noninterest income.
	Goodwill and Intangibles
	Net assets of companies acquired in purchase transactions are recorded at fair value at the date of acquisition. Identified intangibles are amortized on an accelerated basis over the period benefited. Goodwill is not amortized but is reviewed for potential impairment during the third quarter on an annual basis or, more frequently, if events or circumstances indicate a potential impairment, at the reporting unit level. A reporting unit is an operating segment or one level below an operating segment for which discrete financial information is available and regularly reviewed by management. The Company consists of a single reporting unit. If the fair value of the reporting unit, including goodwill, is determined to be less than the carrying amount of the reporting unit, a further test is required to measure the amount of impairment. If an impairment loss exists, the carrying amount of goodwill is adjusted to a new cost basis. Subsequent reversal of a previously recognized goodwill impairment loss is prohibited.
	Intangible assets are evaluated for impairment if events and circumstances indicate a possible impairment. Such evaluation of other intangible assets is based on undiscounted cash flow projections. At December 31, 2013, intangible assets included on the consolidated balance sheets consist of a core deposit intangible amortized using an accelerated method with an original estimated life 10 years.
	Income Taxes
	The provision for income taxes includes current and deferred income tax expense on net income adjusted for permanent and temporary differences such as interest income on state and municipal securities and affordable housing credits. Deferred tax assets and liabilities are recognized for the expected future tax consequences of existing temporary differences between the financial reporting and tax reporting basis of assets and liabilities using enacted tax laws and rates. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. On a quarterly basis, management evaluates deferred tax assets to determine if these tax benefits are expected to be realized in future periods. This determination is based on facts and circumstances, including the Company’s current and future tax outlook. To the extent a deferred tax asset is no longer considered “more likely than not” to be realized, a valuation allowance is established.
	Advertising
	Advertising costs are generally expensed as incurred.
	Earnings per Common Share
	The Company's capital structure includes convertible preferred shares, common shares, restricted common shares, common share options, and warrants to purchase common shares. Restricted common shares participate in dividends declared on common shares at the same rate as common shares. Preferred shares participate in dividends declared on common shares on an "as if converted" basis. Accordingly, the Company calculates earnings per common share (“EPS”) using the two-class method under the Earnings per Share topic of the FASB ASC. The two-class method is an earnings allocation formula that treats a participating security as having rights to earnings that otherwise would have been available to common shareholders but does not require the presentation of basic and diluted EPS for securities other than common shares.
	Under the two-class method, basic EPS is computed by dividing earnings allocated to common shareholders by the weighted average number of common shares outstanding for the period. Earnings allocated to common shareholders represents net income reduced by earnings allocated to participating securities. Common shares outstanding include common stock and vested restricted stock awards. Diluted EPS is computed in the same manner as basic earnings per share except that the denominator is increased to include the number of additional common shares that would have been outstanding if certain shares issuable upon exercise of options and warrants were included unless those additional shares would have been anti-dilutive. For the diluted EPS computation, the treasury stock method is applied and compared to the two-class method and whichever method results in a more dilutive impact is utilized to calculate diluted EPS.
	Share-Based Payment
	The Company accounts for stock options and stock awards in accordance with the Compensation—Stock Compensation topic of the FASB ASC. Authoritative guidance requires the Company to measure the cost of employee services received in exchange for an award of equity instruments, such as stock options or stock awards, based on the fair value of the award on the grant date. This cost must be recognized in the consolidated statements of income over the vesting period of the award.
The Company issues restricted stock awards which generally vest over a four- or five-year period during which time the holder receives dividends and has full voting rights. Restricted stock is valued at the closing price of the Company’s stock on the date of an award.
Derivatives and Hedging Activities
In accordance with the Derivatives and Hedging topic of the FASB ASC, the Company recognizes derivatives as assets or liabilities on the consolidated balance sheets at their fair value. The treatment of changes in the fair value of derivatives depends on the character of the transaction.
The Company enters into derivative contracts to add stability to interest income and to manage its exposure to changes in interest rates. On the date the Company enters into a derivative contract, the derivative instrument is designated as: (1) a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment (a “fair value” hedge); (2) a hedge of the variability in expected future cash flows associated with an existing recognized asset or liability or a probable forecasted transaction (a “cash flow” hedge); or (3) held for other economic purposes (an “economic” hedge) and not formally designated as part of qualifying hedging relationships under authoritative guidance.
In a fair value hedge, changes in the fair value of the hedging derivative are recognized in earnings and offset by recognizing changes in the fair value of the hedged item attributable to the risk being hedged. To the extent that the hedge is ineffective, the changes in fair value will not offset and the difference is reflected in earnings.
In a cash flow hedge, the effective portion of the change in the fair value of the hedging derivative is recorded in accumulated other comprehensive income and is subsequently reclassified into earnings during the same period in which the hedged item affects earnings. The change in fair value of any ineffective portion of the hedging derivative is recognized immediately in earnings. When a cash flow hedge is discontinued, the net derivative gain or loss continues to be reported in accumulated other comprehensive income unless it is probable that the forecasted transactions will not occur by the end of the originally specified time period. The net derivative gain or loss from a discontinued cash flow hedge is reclassified into earnings during the originally specified time period in which the forecasted transactions were to occur.
The Company formally documents the relationship between the hedging instruments and hedged items, as well as its risk management objective and strategy before initiating a hedge. To qualify for hedge accounting, the derivatives and related hedged items must be designated as a hedge. For hedging relationships in which effectiveness is measured, the correlations between the hedging instruments and hedged items are assessed at inception of the hedge and on an ongoing basis, which includes determining whether the hedge relationship is expected to be highly effective in offsetting changes in fair value or cash flows of hedged items.
Derivatives used for other economic purposes are used as economic hedges in which the Company has not attempted to achieve the highly effective hedge accounting standard under authoritative guidance. The changes in fair value of these instruments are recognized immediately in earnings.
Accounting Pronouncements
During the year ended December 31, 2013, the following Accounting Standards Updates were issued or became effective:
In July 2013, the Financial Accounting Standards Board ("FASB") issued ASU No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. The Update clarifies when it is appropriate for an unrecognized tax benefit, or a portion of an unrecognized tax benefit, to be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. ASU 2013-11 is effective for interim and annual periods beginning after December 15, 2013. Early adoption is permitted. The amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date, however, retrospective application is also permitted. Adoption of the new guidance is not expected to have a significant impact on the Company's consolidated financial statements.
In February 2013, the FASB issued ASU No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. The Update requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component and to present either on the face of the statement where net income is presented, or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income, but only if the amount reclassified is required to be reclassified to net income in its entirety in the same reporting period. The amendments are effective for annual and interim reporting periods beginning on or after December 15, 2012. The Company adopted the ASU 2013-02 reporting requirements during the interim reporting period beginning on January 1, 2013 with no impact to the Company's financial condition or results of operations. See Note 18 to the Consolidated Financial Statements of this report for new disclosures related to accumulated other comprehensive income.
In October 2012, the FASB issued ASU 2012-06, Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution. ASU 2012-06 clarifies that when a reporting entity recognizes an indemnification asset as a result of a government-assisted acquisition of a financial institution and there is a subsequent change in the amount of cash flows expected to be collected on the indemnified asset, the reporting entity should subsequently measure the indemnification asset on the same basis as the underlying loans by taking into account the contractual limitations of the Loss-Sharing Agreement ("LSA"). For amortization of changes in value, the reporting entity should use the term of the LSA if it is shorter than the term of the acquired loans. ASU 2012-06 is effective for interim and annual periods beginning after December 15, 2012. The Company adopted the ASU as of January 1, 2013. As a result of the adoption of the ASU, an additional $12.3 million of indemnification asset amortization was recorded during the year ending December 31, 2013, resulting in a reduction of $8.0 million in net income and $0.16 in diluted earnings per share.
In December 2011, the FASB issued ASU 2011-11, Disclosures about Offsetting Assets and Liabilities (Topic 210). ASU 2011-11 requires an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. ASU 2011-11 is effective for interim and annual periods beginning on or after January 1, 2013 and should be applied retrospectively for all comparative periods presented. Subsequent to December 31, 2012, the FASB issued ASU 2013-01 which clarifies the scope of ASU 2011-11. Adoption of the new guidance is not expected to have a significant impact on the Company's consolidated financial statements. See Note 14 to the Consolidated Financial Statements of this report for new disclosures related to balance sheet offsetting.

Business_Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2012
Business Combinations [Abstract]	'
Business Combination Disclosure [Text Block]	'
	Business Combinations
	West Coast Bancorp
	On April 1, 2013, the Company completed its acquisition of West Coast Bancorp ("West Coast"). The Company acquired 100% of the voting equity interests of West Coast. The primary reason for the acquisition was to expand the Company's geographic footprint consistent with its ongoing growth strategy.
	The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting (formerly the purchase method). The assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the April 1, 2013 acquisition date. Subsequent to the acquisition date, the amounts for other assets, other liabilities and goodwill have been retrospectively adjusted to reflect the removal of a liability that was recorded by West Coast, as well as the associated impacts to the deferred tax asset (other assets) and goodwill. The subsequent adjustment recorded was a decrease to other liabilities of $3.3 million, a decrease to other assets of $890 thousand and a decrease to goodwill of $2.4 million and no impact to previously reported net income.
	The application of the acquisition method of accounting resulted in the recognition of goodwill of $228.4 million and a core deposit intangible of $15.3 million, or 0.89% of core deposits. The goodwill represents the excess purchase price over the estimated fair value of the net assets acquired. The goodwill is generally not deductible for income tax purposes.
	The table below summarizes the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:


			April 1, 2013
			(in thousands)

	Purchase price as of April 1, 2013		$	540,791

	Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value:
	Cash and cash equivalents		$	110,440

	Investment securities		730,842

	Federal Home Loan Bank stock		11,824

	Acquired loans		1,407,798

	Premises and equipment		35,884

	Other real estate owned		14,708

	Core deposit intangible		15,257

	Other assets		75,820

	Deposits		(1,883,407		)
	Federal Home Loan Bank advances		(128,885		)
	Junior subordinated debentures		(51,000		)
	Other liabilities		(26,888		)
	Total fair value of identifiable net assets		312,393

	Goodwill		$	228,398

	See Note 10, Goodwill and Other Intangible Assets, for further discussion of the accounting for goodwill and other intangible assets.
	The operating results of the Company include the operating results produced by the acquired assets and assumed liabilities for the period April 1, 2013 to December 31, 2013. Disclosure of the amount of West Coast's revenue and net income (excluding integration costs) included in Columbia's consolidated income statement is impracticable due to the integration of the operations and accounting for this acquisition.
	The following table presents certain unaudited pro forma information for illustrative purposes only, for the years ended December 31, 2013 and 2012 as if West Coast had been acquired on January 1, 2012. The unaudited estimated pro forma information combines the historical results of West Coast with the Company's consolidated historical results and includes certain adjustments reflecting the estimated impact of certain fair value adjustments for the respective periods. The pro forma information is not indicative of what would have occurred had the acquisition occurred on January 1, 2012. In particular, no adjustments have been made to eliminate the impact of other-than-temporary impairment losses and losses recognized on the sale of securities that may not have been necessary had the investments securities been recorded at fair value as of January 1, 2012. The unaudited pro forma information does not consider any changes to the provision for credit losses resulting from recording loan assets at fair value. Additionally, Columbia expects to achieve further operating cost savings and other business synergies, including revenue growth, as a result of the acquisition which are not reflected in the pro forma amounts that follow. As a result, actual amounts will differ from the unaudited pro forma information presented.


			Unaudited Pro Forma
			Years Ended December 31,
			2013			2012
			(in thousands)
	Total revenues (net interest income plus noninterest income)		$	337,712		$	420,167

	Net income		$	76,496		$	91,261

	Earnings per share - basic		$	1.5		$	1.79

	Earnings per share - diluted		$	1.46		$	1.74

	In connection with the West Coast acquisition, Columbia recognized $25.5 million of acquisition-related expenses for the year ended December 31, 2013 and $1.8 million for the year ended December 31, 2012. The acquisition-related expenses were excluded from the table above.

	Bank of Whitman
	On August 5, 2011 the Bank acquired certain assets and assumed certain liabilities of the Bank of Whitman from the FDIC in an FDIC-assisted transaction. The Bank and the FDIC entered into a modified whole bank purchase and assumption agreement without loss share.
	The Bank of Whitman was a full service community bank headquartered in Colfax, Washington. We entered into this transaction to acquire 9 branches total in Adams, Asotin, Grant, Spokane, Walla Walla, and Whitman counties to assist us with filling in our geographic footprint in eastern Washington. We believe participating with the FDIC in this assisted transaction was, from an economical standpoint, advantageous to expansion through de novo branching.
	The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting (formerly the purchase method). The assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the August 5, 2011 acquisition date. The application of the acquisition method of accounting resulted in the recognition of a bargain purchase gain, net of tax, of $1.8 million, which is included in the Gain on bank acquisition line item in the Consolidated Statements of Income, and a core deposit intangible of $3.9 million. The bargain purchase gain represents the excess of the estimated fair value of the assets acquired over the estimated fair value of the liabilities assumed and is influenced significantly by the FDIC-assisted transaction process. The core deposit intangible asset recognized is deductible for income tax purposes.
	The operating results of the Company include the operating results produced by the acquired assets and assumed liabilities for the period August 6, 2011 to December 31, 2013. Due to the exclusion of the majority of the non-performing loans and 11 branch locations, as well as the significant amount of fair value adjustments, historical results of the Bank of Whitman are not meaningful to the Company's results and thus no proforma information is presented.
	The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:


		5-Aug-11
		(in thousands)
Assets
Cash and due from banks		$	52,072

Investment securities		16,298

Federal Reserve Bank and Federal Home Loan Bank stock		3,977

Acquired loans		200,041

Accrued interest receivable		1,975

Premises and equipment		86

FDIC receivable		156,710

Core deposit intangible		3,943

Other assets		2,447

Total assets acquired		$	437,549

Liabilities
Deposits		$	401,127

Federal Home Loan Bank advances		32,949

Accrued interest payable		213

Deferred tax liability		1,034

Other liabilities		396

Total liabilities assumed		435,719

Net assets acquired (after tax gain)		$	1,830

First Heritage Bank
On May 27, 2011 the Bank acquired certain assets and assumed certain liabilities of First Heritage Bank from the FDIC in an FDIC-assisted transaction. As part of the Purchase and Assumption Agreement, the Bank and the FDIC entered into loss-sharing agreements (each, a “loss-sharing agreement” and collectively, the “loss-sharing agreements”), whereby the FDIC will cover a substantial portion of any future losses on loans (and related unfunded commitments), OREO and certain accrued interest on loans for up to 90 days. We refer to the acquired loans and OREO subject to the loss-sharing agreements collectively as “covered assets.” Under the terms of the loss-sharing agreements, the FDIC will absorb 80% of losses and share in 80% of loss recoveries. The loss-sharing provisions of the agreements for commercial and single family residential mortgage loans are in effect for five years and ten years, respectively, from the May 27, 2011 acquisition date and the loss recovery provisions for such loans are in effect for eight years and ten years, respectively, from the acquisition date.
First Heritage Bank was a full service community bank headquartered in Snohomish, Washington that operated five branch locations in King and Snohomish Counties. We entered into this transaction to assist us with filling in our geographic footprint between Seattle and Bellingham, Washington and to support our recently expanded Bellingham banking team. We believe participating with the FDIC in this assisted transaction was, from an economical standpoint, advantageous to expansion through de novo branching.
The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting (formerly the purchase method). The assets and liabilities, both tangible and intangible, were initially provisionally recorded at their estimated fair values as of the May 27, 2011 acquisition date pending completion of valuation adjustments related to acquired loans, OREO, the indemnification asset, and other assets. The initial amounts recorded for acquired loans, OREO, the indemnification asset, and other assets were $81.9 million, $8.3 million, $38.1 million, and $1.7 million, respectively. At December 31, 2011 these amounts were retrospectively adjusted resulting in a $369 thousand decrease to acquired loans, a $61 thousand decrease to OREO, a $427 thousand increase to the indemnification asset, and a $1.9 million increase to other assets. The application of the acquisition method of accounting resulted in the recognition of $4.0 million of goodwill and a core deposit intangible of $1.3 million. The goodwill represents the excess of the estimated fair value of the liabilities assumed over the estimated fair value of the assets acquired and is influenced significantly by the FDIC-assisted transaction process.
The operating results of the Company include the operating results produced by the acquired assets and assumed liabilities for the period May 28, 2011 to December 31, 2013. Due primarily to the significant amount of fair value adjustments and the FDIC loss-sharing agreements put in place, historical results of First Heritage Bank are not meaningful to the Company’s results and thus no proforma information is presented.
The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:



		May 27, 2011
		(in thousands)
Assets
Cash and due from banks		$	4,688

Interest-earning deposits with banks		6,689

Investment securities		5,303

Federal Home Loan Bank stock		477

Acquired loans		81,488

Accrued interest receivable		476

Premises and equipment		5,339

FDIC receivable		4,751

Other real estate owned covered by loss sharing		8,225

Goodwill		4,023

Core deposit intangible		1,337

FDIC indemnification asset		38,531

Other assets		3,657

Total assets acquired		$	164,984

Liabilities
Deposits		$	159,525

Federal Home Loan Bank advances		5,003

Accrued interest payable		421

Other liabilities		35

Total liabilities assumed		$	164,984


Summit Bank
On May 20, 2011 the Bank acquired certain assets and assumed certain liabilities of Summit Bank from the Federal Deposit Insurance Corporation (“FDIC”) in an FDIC-assisted transaction. As part of the Purchase and Assumption Agreement, the Bank and the FDIC entered into loss-sharing agreements (each, a “loss-sharing agreement” and collectively, the “loss-sharing agreements”), whereby the FDIC will cover a substantial portion of any future losses on loans (and related unfunded commitments), OREO and certain accrued interest on loans for up to 90 days. We refer to the acquired loans and OREO subject to the loss-sharing agreements collectively as “covered assets.” Under the terms of the loss-sharing agreements, the FDIC will absorb 80% of losses and share in 80% of loss recoveries. The loss-sharing provisions of the agreements for commercial and single family residential mortgage loans are in effect for five years and ten years, respectively, from the May 20, 2011 acquisition date and the loss recovery provisions for such loans are in effect for eight years and ten years, respectively, from the acquisition date.
Summit Bank was a full service community bank headquartered in Burlington, Washington that operated three branch locations in Skagit County. We entered into this transaction to assist us with filling in our geographic footprint between Seattle and Bellingham, Washington and to support our recently expanded Bellingham banking team. We believe participating with the FDIC in this assisted transaction was, from an economical standpoint, advantageous to expansion through de novo branching.
The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting (formerly the purchase method). The assets and liabilities, both tangible and intangible, were initially provisionally recorded at their estimated fair values as of the May 20, 2011 acquisition date pending completion of valuation adjustments related to acquired loans, OREO, the indemnification asset, and other assets. The initial amounts recorded for acquired loans, OREO, the indemnification asset, and other assets were $71.4 million, $2.7 million, $27.2 million, and $786 thousand, respectively. At December 31, 2011 these amounts were retrospectively adjusted resulting in a $1.7 million decrease to acquired loans, a $509 thousand decrease to OREO, a $3.0 million increase to the indemnification asset, and a $1.0 million increase to other assets. The application of the acquisition method of accounting resulted in the recognition of $1.9 million of goodwill and a core deposit intangible of $509 thousand. The goodwill represents the excess of the estimated fair value of the liabilities assumed over the estimated fair value of the assets acquired and is influenced significantly by the FDIC-assisted transaction process.
The operating results of the Company include the operating results produced by the acquired assets and assumed liabilities for the period May 21, 2011 to December 31, 2013. Due primarily to the significant amount of fair value adjustments and the FDIC loss-sharing agreements put in place, historical results of Summit Bank are not meaningful to the Company’s results and thus no pro forma information is presented.
The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:



		May 20, 2011
		(in thousands)
Assets
Cash and due from banks		$	1,837

Interest-earning deposits with banks and federal funds sold		14,198

Investment securities		871

Federal Home Loan Bank stock		406

Acquired loans		69,783

Accrued interest receivable		429

Premises and equipment		42

FDIC receivable		6,984

Other real estate owned covered by loss sharing		2,162

Goodwill		1,892

Core deposit intangible		509

FDIC indemnification asset		30,203

Other assets		1,813

Total assets acquired		$	131,129

Liabilities
Deposits		$	123,279

Federal Home Loan Bank advances		7,772

Accrued interest payable		71

Other liabilities		7

Total liabilities assumed		$	131,129

Cash_and_Cash_Equivalents

Cash and Cash Equivalents	12 Months Ended
Cash and Cash Equivalents	Dec. 31, 2013
Cash and Cash Equivalents [Abstract]	'
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	The Company is required to maintain an average reserve balance with the Federal Reserve Bank or maintain such reserve balance in the form of cash. The average required reserve balance for the years ended December 31, 2013 and 2012 was approximately $36.3 million and $28.6 million, respectively, and was met by holding cash and maintaining an average balance with the Federal Reserve Bank.

Securities

Securities	12 Months Ended
	Dec. 31, 2013
Available-for-sale Securities [Abstract]	'
Securities	'
	Securities
	At December 31, 2013 the Company's securities portfolio primarily consisted of securities issued by the U.S. government, U.S. government agencies, U.S. government-sponsored enterprises and state and municipalities. All of the Company’s mortgage-backed securities and collateralized mortgage obligations are issued by U.S. government agencies and U.S. government-sponsored enterprises and are implicitly guaranteed by the U.S. government. The Company had no other issuances in its portfolio which exceeded ten percent of shareholders’ equity.
	The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale:


			Amortized			Gross			Gross				Fair Value
			Cost			Unrealized			Unrealized
						Gains			Losses
	December 31, 2013		(in thousands)
	U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations		$	961,442		$	10,640		$	(23,674	)		$	948,408

	State and municipal securities		357,013			11,450			(3,993		)		364,470

	U.S. government agency and government-sponsored enterprise securities		335,671			434			(10,066		)		326,039

	U.S. government securities		21,081			—			(967		)		20,114

	Other securities		5,284			27			(231		)		5,080

	Total		$	1,680,491		$	22,551		$	(38,931	)		$	1,664,111

	December 31, 2012
	U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations		$	561,076		$	16,719		$	(5,426	)		$	572,369

	State and municipal securities		265,070			20,893			(388		)		285,575

	U.S. government agency and government-sponsored enterprise securities		120,085			851			(435		)		120,501

	U.S. government securities		19,804			39			(15		)		19,828

	Other securities		3,324			104			(36		)		3,392

	Total		$	969,359		$	38,606		$	(6,300	)		$	1,001,665

	Gross realized losses amounted to $170 thousand, $714 thousand, and $250 thousand for the years ended December 31, 2013, 2012 and 2011, respectively. Gross realized gains amounted to $632 thousand, $4.4 million, and $384 thousand for the years ended December 31, 2013, 2012 and 2011, respectively. The following table summarizes the amortized cost and fair value of securities available for sale by contractual maturity groups:


			December 31, 2013
			Amortized Cost			Fair Value
			(in thousands)
	Due within one year		$	14,079		$	14,239

	Due after one year through five years		303,875			302,641

	Due after five years through ten years		487,643			480,244

	Due after ten years		869,610			861,907

	Other securities with no stated maturity		$	5,284		$	5,080

	Total investment securities available-for-sale		$	1,680,491		$	1,664,111

	The following table summarizes, as of December 31, 2013 and 2012, the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law:


			December 31, 2013			December 31, 2012
			(in thousands)
	Washington and Oregon State to secure public deposits		$	277,012		$	281,006

	Federal Reserve Bank to secure borrowings		42,694			47,634

	Other securities pledged		43,081			46,090

Total securities pledged as collateral		$	362,787		$	374,730

The following tables show the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2013 and 2012:


		Less than 12 Months						12 Months or More							Total
		Fair			Unrealized			Fair				Unrealized			Fair		Unrealized
		Value			Losses			Value				Losses			Value		Losses
December 31, 2013		(in thousands)
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations		$	492,921		$	(10,991	)	$	121,303			$	(12,684	)	$	614,224	(23,675		)

State and municipal securities		112,400			(3,069		)	13,815				(923		)	126,215		(3,992		)

U.S. government agency and government-sponsored enterprise securities		260,001			(8,063		)	28,447				(2,003		)	288,448		(10,066		)

U.S. government securities		20,114			(967		)	—				—			20,114		(967		)

Other securities		2,257			(58		)	2,783				(173		)	5,040		(231		)

Total		$	887,693		$	(23,148	)	$	166,348			$	(15,783	)	$	1,054,041	$	(38,931	)

December 31, 2012
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations		$	167,739		$	(5,090	)	$	12,204			$	(336	)	$	179,943	$	(5,426	)

State and municipal securities		20,413			(383		)	210				(5		)	20,623		(388		)

U.S. government agency and government-sponsored enterprise securities		56,600			(435		)	—				—			56,600		(435		)

U.S. government securities		9,914			(15		)	—				—			9,914		(15		)

Other securities		—			—			964				(36		)	964		(36		)

Total		$	254,666		$	(5,923	)	$	13,378			$	(377	)	$	268,044	$	(6,300	)

At December 31, 2013, there were 84 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 11 were in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not currently intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be maturity, the Company does not consider these investments to be other-than-temporarily impaired at December 31, 2013.
At December 31, 2013, there were 131 state and municipal government securities in an unrealized loss position, of which 11 were in a continuous loss position for 12 months or more. The unrealized losses on state and municipal securities were caused by interest rate changes or widening of market spreads subsequent to the purchase of the individual securities. Management monitors published credit ratings of these securities for adverse changes. As of December 31, 2013 none of the rated obligations of state and local government entities held by the Company had an adverse credit rating. Because the credit quality of these securities are investment grade and the Company does not currently intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be maturity, the Company does not consider these investments to be other-than-temporarily impaired at December 31, 2013.
At December 31, 2013, there were 31 U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, of which three were in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not currently intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be maturity, the Company does not consider these investments to be other-than-temporarily impaired at December 31, 2013.
At December 31, 2013, there were five U.S. government securities in an unrealized loss position, which were not in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not currently intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be maturity, the Company does not consider these investments to be other-than-temporarily impaired at December 31, 2013.
At December 31, 2013, there were two other securities in an unrealized loss position, of which one security, a mortgage-backed securities fund, was in a continuous unrealized loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates and the additional risk premium investors are demanding for investment securities with these characteristics. The Company does not consider this investment to be other-than-temporarily impaired at December 31, 2013 as it has the intent and ability to hold the investment for sufficient time to allow for recovery in the market value.
Securities Deemed to be Other-Than-Temporarily Impaired
During the fourth quarter of 2012, the Company received full payment on a municipal bond that was determined to be other-than-temporarily impaired during 2011 for which the Company recorded impairment of $3.0 million in 2011. The 2011 impairment and the 2012 gain related to this security are recorded in the line item Investment securities gains(losses), net in the Consolidated Statements of Income.

Noncovered_Loans

Noncovered Loans	12 Months Ended
	Dec. 31, 2013
Noncovered Loans [Abstract]	'
Noncovered Loans	'
	Noncovered Loans
	Noncovered loans include loans originated through our branch network and loan departments as well as acquired loans that are not subject to FDIC loss-share agreements.
	The following is an analysis of the noncovered loan portfolio by major types of loans (net of unearned income):


			December 31,				December 31,
			2013				2012
			(in thousands)
	Noncovered loans:
	Commercial business		$	1,561,782			$	1,155,158

	Real estate:
	One-to-four family residential		108,317				43,922

	Commercial and multifamily residential		2,080,075				1,061,201

	Total real estate		2,188,392				1,105,123

	Real estate construction:
	One-to-four family residential		54,155				50,602

	Commercial and multifamily residential		126,390				65,101

	Total real estate construction		180,545				115,703

	Consumer		357,014				157,493

	Less: Net unearned income		(68,282		)		(7,767		)
	Total noncovered loans, net of unearned income		4,219,451				2,525,710

	Less: Allowance for loan and lease losses		(52,280		)		(52,244		)
	Total noncovered loans, net		$	4,167,171			$	2,473,466

	Loans held for sale		$	735			$	2,563

	At December 31, 2013 and 2012, the Company had no material foreign activities. Substantially all of the Company’s loans and unfunded commitments are geographically concentrated in its service areas within the states of Washington and Oregon.
	The Company has granted loans to officers and directors of the Company and related interests. These loans are made on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability. The aggregate dollar amount of these loans was $14.2 million and $14.2 million at December 31, 2013 and 2012, respectively. During 2013, advances and repayments on related party loans totaled $2.0 million.
	At December 31, 2013 and 2012, $1.08 billion and $443.4 million of commercial and residential real estate loans were pledged as collateral on Federal Home Loan Bank advances. The Company has also pledged $45.2 million and $13.8 million of commercial loans to the Federal Reserve Bank for additional borrowing capacity at December 31, 2013 and 2012, respectively.
	Nonaccrual loans totaled $34.0 million and $37.4 million at December 31, 2013 and 2012, respectively. The amount of interest income foregone as a result of these loans being placed on nonaccrual status totaled $2.9 million for 2013, $3.4 million for 2012 and $5.3 million for 2011. There were no loans 90 days past due and still accruing interest as of December 31, 2013 and December 31, 2012. At December 31, 2013 and 2012, there were $28 thousand and $346 thousand, respectively, of commitments of additional funds for loans accounted for on a nonaccrual basis.
	The following is an analysis of noncovered, nonaccrual loans as of December 31, 2013 and 2012:



			December 31, 2013								December 31, 2012
			Recorded				Unpaid Principal				Recorded				Unpaid Principal
			Investment				Balance				Investment				Balance
			Nonaccrual				Nonaccrual				Nonaccrual				Nonaccrual
			Loans				Loans				Loans				Loans
	Noncovered loans:		(in thousands)
	Commercial business:
	Secured		$	12,433			$	19,186			$	9,037			$	17,821

	Unsecured		176				202				262				262

	Real estate:
	One-to-four family residential		2,667				4,678				2,349				2,672

	Commercial and multifamily residential:
	Commercial land		442				783				4,076				7,491

	Income property		4,267				5,383				8,520				10,815

	Owner occupied		6,334				7,486				6,608				7,741

Real estate construction:
One-to-four family residential:
Land and acquisition		3,246				6,601				3,084				6,704

Residential construction		459				1,928				1,816				2,431

Consumer		3,991				6,187				1,643				1,940

Total		$	34,015			$	52,434			$	37,395			$	57,877


The following is an aging of the recorded investment of the noncovered loan portfolio as of December 31, 2013 and 2012:



		Current				30 - 59				60 - 89				Total				Nonaccrual				Total Loans
		Loans				Days				Days				Past Due				Loans
						Past Due				Past Due
December 31, 2013		(in thousands)
Noncovered loans:
Commercial business:
Secured		$	1,457,820			$	12,713			$	681			$	13,394			$	12,433			$	1,483,647

Unsecured		72,255				156				17				173				176				72,604

Real estate:
One-to-four family residential		100,591				1,993				641				2,634				2,667				105,892

Commercial and multifamily residential:
Commercial land		142,034				—				358				358				442				142,834

Income property		1,138,732				144				3,289				3,433				4,267				1,146,432

Owner occupied		749,561				4,714				—				4,714				6,334				760,609

Real estate construction:
One-to-four family residential:
Land and acquisition		8,225				199				—				199				3,246				11,670

Residential construction		41,533				—				—				—				459				41,992

Commercial and multifamily residential:
Income property		86,521				—				—				—				—				86,521

Owner occupied		38,916				—				—				—				—				38,916

Consumer		322,685				835				823				1,658				3,991				328,334

Total		$	4,158,873			$	20,754			$	5,809			$	26,563			$	34,015			$	4,219,451

		Current				30 - 59				60 - 89				Total				Nonaccrual				Total Loans
		Loans				Days				Days				Past Due				Loans
						Past Due				Past Due
December 31, 2012		(in thousands)
Noncovered loans:
Commercial business:
Secured		$	1,091,770			$	4,259			$	1,485			$	5,744			$	9,037			$	1,106,551

Unsecured		44,817				252				12				264				262				45,343

Real estate:
One-to-four family residential		41,508				193				142				335				2,349				44,192

Commercial and multifamily residential:
Commercial land		42,818				311				122				433				4,076				47,327

Income property		603,339				2,726				227				2,953				8,520				614,812

Owner occupied		387,525				1,040				—				1,040				6,608				395,173

Real estate construction:
One-to-four family residential:
Land and acquisition		15,412				—				—				—				3,084				18,496

Residential construction		29,848				—				—				—				1,816				31,664

Commercial and multifamily residential:
Income property		28,342				—				—				—				—				28,342

Owner occupied		36,211				—				—				—				—				36,211

Consumer		155,207				387				362				749				1,643				157,599

Total		$	2,476,797			$	9,168			$	2,350			$	11,518			$	37,395			$	2,525,710


The following is an analysis of impaired loans (see Note 1) as of December 31, 2013 and 2012:


		Recorded Investment				Recorded Investment				Impaired Loans With												Impaired Loans Without
		of Loans				of Loans				Recorded Allowance												Recorded Allowance
		Collectively Measured				Individually
		for Contingency				Measured for
		Provision				Specific
						Impairment				Recorded				Unpaid				Related				Recorded			Unpaid
										Investment				Principal				Allowance				Investment			Principal
														Balance											Balance
December 31, 2013		(in thousands)
Noncovered loans:
Commercial business:
Secured		$	1,478,560			$	5,087			$	2,866			$	2,885			$	343			$	2,221		$	2,560

Unsecured		72,569				35				35				35				35				—			—

Real estate:
One-to-four family residential		104,272				1,620				442				479				138				1,178			2,119

Commercial and multifamily residential:
Commercial land		142,719				115				—				—				—				115			398

Income property		1,140,019				6,413				918				933				26				5,495			7,885

Owner occupied		749,601				11,008				3,802				3,817				1,073				7,206			10,464

Real estate construction:
One-to-four family residential:
Land and acquisition		9,726				1,944				113				113				71				1,831			2,587

Residential construction		41,992				—				—				—				—				—			—

Commercial and multifamily residential:
Income property		86,521				—				—				—				—				—			—

Owner occupied		38,916				—				—				—				—				—			—

Consumer		328,167				167				23				27				4				144			210

Total		$	4,193,062			$	26,389			$	8,199			$	8,289			$	1,690			$	18,190		$	26,223




		Recorded Investment				Recorded Investment				Impaired Loans With												Impaired Loans Without
		of Loans				of Loans				Recorded Allowance												Recorded Allowance
		Collectively Measured				Individually
		for Contingency				Measured for
		Provision				Specific
						Impairment				Recorded				Unpaid				Related				Recorded			Unpaid
										Investment				Principal				Allowance				Investment			Principal
														Balance											Balance
December 31, 2012		(in thousands)
Noncovered loans:
Commercial business:
Secured		$	1,101,689			$	4,862			$	690			$	1,994			$	113			$	4,172		$	6,769

Unsecured		45,251				92				92				92				92				—			—

Real estate:
One-to-four family residential		42,103				2,089				345				364				112				1,744			1,902

Commercial and multifamily residential:
Commercial land		44,672				2,655				—				—				—				2,655			5,727

Income property		606,656				8,156				2,670				2,727				1,040				5,486			7,860

Owner occupied		383,269				11,904				608				610				38				11,296			14,642

Real estate construction:
One-to-four family residential
Land and acquisition		15,677				2,819				—				—				—				2,819			4,813

Residential construction		29,707				1,957				—				—				—				1,957			2,570

Commercial and multifamily residential:
Income property		28,342				—				—				—				—				—			—

Owner occupied		36,211				—				—				—				—				—			—

Consumer		157,472				127				—				—				—				127			127

Total		$	2,491,049			$	34,661			$	4,405			$	5,787			$	1,395			$	30,256		$	44,410


The following table provides additional information on impaired loans for the years ended December 31, 2013, 2012 and 2011:


		Year ended December 31, 2013								Year Ended December 31, 2012								Year ended December 31, 2011
		Average Recorded				Interest Recognized				Average Recorded				Interest Recognized				Average Recorded				Interest Recognized
		Investment				on				Investment				on				Investment				on
		Impaired Loans				Impaired Loans				Impaired Loans				Impaired Loans				Impaired Loans				Impaired Loans
Noncovered loans:		(in thousands)
Commercial business
Secured		$	5,636			$	19			$	8,978			$	9			$	15,578			$	511

Unsecured		61				3				113				6				138				—

Real estate:
One-to-four family residential		1,665				63				2,130				—				2,494				—

Commercial & multifamily residential
Commercial land		1,691				—				3,124				—				4,263				—

Income property		8,910				238				7,895				77				8,881				59

Owner occupied		10,779				971				13,315				1,004				15,254				18

Real estate construction:
One-to-four family residential
Land and acquisition		2,624				6				4,465				—				8,972				116

Residential construction		420				—				3,223				11				4,535				—

Commercial & multifamily residential
Income property		—				—				3,169				—				7,065				—

Consumer		253				6				1,112				7				3,880				15

Total		$	32,039			$	1,306			$	47,524			$	1,114			$	71,060			$	719



The following is an analysis of loans classified as Troubled Debt Restructurings ("TDR") for the years ended December 31, 2013, 2012 and 2011:


		Year ended December 31, 2013											Year Ended December 31, 2012											Year ended December 31, 2011
		Number of TDR Modifications			Pre-Modification				Post-Modification				Number of TDR Modifications			Pre-Modification				Post-Modification				Number of TDR Modifications		Pre-Modification		Post-Modification
					Outstanding				Outstanding							Outstanding				Outstanding						Outstanding		Outstanding
					Recorded				Recorded							Recorded				Recorded						Recorded		Recorded
					Investment				Investment							Investment				Investment						Investment		Investment
Noncovered loans:		(dollars in thousands)
Commercial business:
Secured		2			$	190			$	190			1			$	195			$	194			6		$	659	$	659

Real estate:
One-to-four family residential		1			113				113				—			—				—				1		369		369

Commercial and multifamily residential:
Commercial land		1			137				137				—			—				—				—		—		—

Income property		4			1,186				1,186				1			4,279				2,650				2		1,280		1,280

Owner occupied		1			172				172				—			—				—				—		—		—

Real estate construction:
One-to-four family residential:
Land and acquisition		1			117				117				—			—				—				—		—		—

Residential construction		—			—				—				—			—				—				1		36		36

Consumer		2			53				53				—			—				—				—		—		—

Total		12			$	1,968			$	1,968			2			$	4,474			$	2,844			10		$	2,344	$	2,344

The Company's loans classified as TDR are loans that have been modified or the borrower has been granted special concessions due to financial difficulties, that if not for the challenges of the borrower, the Company would not otherwise consider. The Company had commitments to lend $0 and $236 thousand of additional funds on loans classified as TDR as of December 31, 2013 and 2012, respectively. The TDR modifications or concessions are made to increase the likelihood that these borrowers with financial difficulties will be able to satisfy their debt obligations as amended. Credit losses for loans classified as TDR are measured on the same basis as impaired loans. For impaired loans, an allowance is established when the collateral value less selling costs (or discounted cash flows or observable market price) of the impaired loan is lower than the recorded investment of that loan. The Company did not have any loans modified as TDR that defaulted within 12 months of being modified as TDR during the years ended December 31,
2013, 2012, and 2011.

Allowance_for_Noncovered_Loan_

Allowance for Noncovered Loan and Lease Losses and Unfunded Commitments and Letters of Credit	12 Months Ended
	Dec. 31, 2013
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit	'
Allowance for Loan and Lease Losses and Unfunded Loan Commitments and Letters of Credit	'
	Allowance for Noncovered Loan and Lease Losses and Unfunded Commitments and Letters of Credit
	We maintain an allowance for loan and lease losses (“ALLL”) to absorb losses inherent in the loan portfolio. The size of the ALLL is determined through quarterly assessments of the probable estimated losses in the loan portfolio. Our methodology for making such assessments and determining the adequacy of the ALLL includes the following key elements:

	1	General valuation allowance consistent with the Contingencies topic of the FASB ASC.

	2	Classified loss reserves on specific relationships. Specific allowances for identified problem loans are determined in accordance with the Receivables topic of the FASB ASC.

	3	The unallocated allowance provides for other factors inherent in our loan portfolio that may not have been contemplated in the general and specific components of the allowance. This unallocated amount generally comprises less than 5% of the allowance. The unallocated amount is reviewed quarterly based on trends in credit losses, the results of credit reviews and overall economic trends.
	The general valuation allowance is systematically calculated quarterly using quantitative and qualitative information about specific loan classes. The minimum required level an entity develops a methodology to determine its allowance for loan and lease losses is by general categories of loans, such as commercial business, real estate, and consumer. However, the Company’s methodology in determining its allowance for loan and lease losses is prepared in a more detailed manner at the loan class level, utilizing specific categories such as commercial business secured, commercial business unsecured, real estate commercial land, and real estate income property multifamily. The quantitative information uses historical losses from a specific loan class and incorporates the loan’s risk rating migration from origination to the point of loss based upon the consideration of an appropriate look back period.
	A loan’s risk rating is primarily determined based upon the borrower’s ability to fulfill its debt obligation from a cash flow perspective. In the event there is financial deterioration of the borrower, the borrower’s other sources of income or repayment are also considered, including recent appraisal values for collateral dependent loans. The qualitative information takes into account general economic and business conditions affecting our marketplace, seasoning of the loan portfolio, duration of the business cycle, etc. to ensure our methodologies reflect the current economic environment and other factors as using historical loss information exclusively may not give an accurate estimate of inherent losses within the Company’s loan portfolio.
	When a loan is deemed to be impaired, the Company has to determine if a specific valuation allowance is required for that loan. The specific valuation allowance is a reserve, calculated at the individual loan level, for each loan determined to be both, impaired and containing a value less than its recorded investment. The Company measures the impairment based on the discounted expected future cash flows, observable market price, or the fair value of the collateral less selling costs if the loan is collateral dependent or if foreclosure is probable. The specific reserve for each loan is equal to the difference between the recorded investment in the loan and its determined impairment value.
	The ALLL is increased by provisions for loan and lease losses (“provision”) charged to expense, and is reduced by loans charged off, net of recoveries. While the Company’s management believes the best information available is used to determine the ALLL, changes in market conditions could result in adjustments to the ALLL, affecting net income, if circumstances differ from the assumptions used in determining the ALLL.
	We have used the same methodology for ALLL calculations during 2013, 2012 and 2011. Adjustments to the percentages of the ALLL allocated to loan categories are made based on trends with respect to delinquencies and problem loans within each class of loans. The Company reviews the ALLL quantitative and qualitative methodology on a quarterly basis and makes adjustments when appropriate. The Company continues to strive towards maintaining a conservative approach to credit quality and will continue to prudently adjust our ALLL as necessary in order to maintain adequate reserves. The Company carefully monitors the loan portfolio and continues to emphasize the importance of credit quality.
	Once it is determined that all or a portion of a loan balance is uncollectable, and the amount can be reasonably estimated, the uncollectable portion of the loan is charged-off.
	The following tables show a detailed analysis of the allowance for loan and lease losses for noncovered loans for the years ended December 31, 2013, 2012 and 2011:


			Beginning			Charge-offs				Recoveries			Provision (Recovery)				Ending			Specific			General
			Balance														Balance			Reserve			Allocation
	Year ended December 31, 2013		(in thousands)
	Noncovered loans:
	Commercial business:
	Secured		$	27,270		$	(4,148	)		$	1,512		$	6,393			$	31,027		$	343		$	30,684

	Unsecured		753			(794		)		932			(195		)		696			35			661

	Real estate:
	One-to-four family residential		694			(228		)		270			516				1,252			138			1,114

	Commercial and multifamily residential:
	Commercial land		460			(20		)		169			(120		)		489			—			489

	Income property		11,033			(1,405		)		489			(883		)		9,234			26			9,208

	Owner occupied		6,362			(1,118		)		375			(2,014		)		3,605			1,073			2,532

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		1,171			(32		)		2,553			(3,082		)		610			71			539

	Residential construction		635			(101		)		112			176				822			—			822

	Commercial and multifamily residential:
	Income property		316			—				—			(31		)		285			—			285

	Owner occupied		102			—				—			(44		)		58			—			58

	Consumer		2,437			(2,242		)		552			1,800				2,547			4			2,543

	Unallocated		1,011			—				—			644				1,655			—			1,655

	Total		$	52,244		$	(10,088	)		$	6,964		$	3,160			$	52,280		$	1,690		$	50,590



			Beginning			Charge-offs				Recoveries			Provision (Recovery)				Ending			Specific			General
			Balance														Balance			Reserve			Allocation
	Year Ended December 31, 2012		(in thousands)
	Noncovered loans:
	Commercial business:
	Secured		$	24,745		$	(10,029	)		$	1,354		$	11,200			$	27,270		$	113		$	27,157

	Unsecured		689			(144		)		194			14				753			92			661

Real estate:
One-to-four family residential		654			(549		)		285			304				694			112			582

Commercial and multifamily residential:
Commercial land		488			(526		)		63			435				460			—			460

Income property		9,551			(4,030		)		905			4,607				11,033			1,040			9,993

Owner occupied		9,606			(918		)		631			(2,957		)		6,362			38			6,324

Real estate construction:
One-to-four family residential:
Land and acquisition		2,331			(989		)		1,059			(1,230		)		1,171			—			1,171

Residential construction		864			(617		)		429			(41		)		635			—			635

Commercial and multifamily residential:
Income property		665			(93		)		66			(322		)		316			—			316

Owner occupied		35			—				—			67				102			—			102

Consumer		2,719			(2,534		)		1,171			1,081				2,437			—			2,437

Unallocated		694			—				—			317				1,011			—			1,011

Total		$	53,041		$	(20,429	)		$	6,157		$	13,475			$	52,244		$	1,395		$	50,849



		Beginning			Charge-offs				Recoveries			Provision (Recovery)				Ending			Specific			General
		Balance														Balance			Reserve			Allocation
Year ended December 31, 2011		(in thousands)
Noncovered loans:
Commercial business:
Secured		$	21,811		$	(7,270	)		$	1,154		$	9,050			$	24,745		$	954		$	23,791

Unsecured		738			(639		)		1,444			(854		)		689			97			592

Real estate:
One-to-four family residential		1,100			(717		)		80			191				654			96			558

Commercial and multifamily residential:
Commercial land		634			(660		)		12			502				488			—			488

Income property		15,210			(1,407		)		414			(4,666		)		9,551			63			9,488

Owner occupied		9,692			(1,620		)		33			1,501				9,606			185			9,421

Real estate construction:
One-to-four family residential:
Land and acquisition		3,769			(1,419		)		1,978			(1,997		)		2,331			—			2,331

Residential construction		2,292			(1,068		)		113			(473		)		864			59			805

Commercial and multifamily residential:
Income property		274			(2,213		)		—			2,604				665			—			665

Owner occupied		70			—				—			(35		)		35			—			35

Consumer		2,120			(3,918		)		351			4,166				2,719			30			2,689

Unallocated		3,283			—				—			(2,589		)		694			—			694

Total		$	60,993		$	(20,931	)		$	5,579		$	7,400			$	53,041		$	1,484		$	51,557

Changes in the allowance for unfunded commitments and letters of credit, a component of other liabilities in the consolidated balance sheet, are summarized as follows:


		Years Ended December 31,
		2013			2012				2011
		(in thousands)
Beginning balance		$	1,915		$	1,535			$	1,165

Net changes in the allowance for unfunded commitments and letters of credit		590			380				370

Ending balance		$	2,505		$	1,915			$	1,535

Risk Elements
The extension of credit in the form of loans to individuals and businesses is one of our principal commerce activities. Our policies and applicable laws and regulations require risk analysis as well as ongoing portfolio and credit management. We manage our credit risk through lending limit constraints, credit review, approval policies and extensive, ongoing internal monitoring. We also manage credit risk through diversification of the loan portfolio by type of loan, type of industry, type of borrower and by limiting the aggregation of debt to a single borrower.
Risk ratings are reviewed and updated whenever appropriate, with more periodic reviews as the risk and dollar value of loss on the loan increases. In the event full collection of principal and interest is not reasonably assured, the loan is appropriately downgraded and, if warranted, placed on nonaccrual status even though the loan may be current as to principal and interest payments. Additionally, we assess whether an impairment of a loan warrants specific reserves or a write-down of the loan.
Pass loans are generally considered to have sufficient sources of repayment in order to repay the loan in full in accordance with all terms and conditions. Special mention loans have potential weaknesses that, if left uncorrected, may result in deterioration of the repayment prospects for the asset or in the Company's credit position at some future date. Loans with a risk rating of Substandard or worse are reported as classified loans in our allowance for loan and lease losses analysis. We review these loans to assess the ability of our borrowers to service all interest and principal obligations and, as a result, the risk rating may be adjusted accordingly. Substandard loans reflect loans where a loss is possible if loan weaknesses are not corrected. Doubtful loans have a high probability of loss, however, the amount of loss has not yet been determined. Loss loans are considered uncollectable and when identified, are charged off.
The following is an analysis of the credit quality of our noncovered loan portfolio as of December 31, 2013 and 2012:



		Pass			Special Mention				Substandard			Doubtful				Loss			Total
December 31, 2013		(in thousands)
Noncovered loans:
Commercial business:
Secured		$	1,372,038		$	43,309			$	68,300		$	—			$	—		$	1,483,647

Unsecured		72,226			199				179			—				—			72,604

Real estate:
One-to-four family residential		98,626			1,567				5,699			—				—			105,892

Commercial and multifamily residential:
Commercial land		137,850			—				4,984			—				—			142,834

Income property		1,108,033			5,473				32,926			—				—			1,146,432

Owner occupied		748,725			—				11,884			—				—			760,609

Real estate construction:
One-to-four family residential:
Land and acquisition		7,526			—				4,144			—				—			11,670

Residential construction		36,270			2,352				3,370			—				—			41,992

Commercial and multifamily residential:
Income property		86,206			—				315			—				—			86,521

Owner occupied		38,916			—				—			—				—			38,916

Consumer		321,348			331				6,188			467				—			328,334

Total		$	4,027,764		$	53,231			$	137,989		$	467			$	—		4,219,451

Less:
Allowance for loan losses																			52,280

Noncovered loans, net																			$	4,167,171



		Pass			Special Mention				Substandard			Doubtful				Loss			Total
December 31, 2012		(in thousands)
Noncovered loans:
Commercial business:
Secured		$	1,011,722		$	29,222			$	65,607		$	—			$	—		$	1,106,551

Unsecured		44,788			26				529			—				—			45,343

Real estate:
One-to-four family residential		40,346			406				3,440			—				—			44,192

Commercial and multifamily residential:
Commercial land		43,401			—				3,926			—				—			47,327

Income property		581,671			3,688				29,453			—				—			614,812

Owner occupied		357,063			1,848				36,262			—				—			395,173

Real estate construction:
One-to-four family residential:
Land and acquisition		12,741			1,351				4,404			—				—			18,496

Residential construction		28,705			1,142				1,817			—				—			31,664

Commercial and multifamily residential:
Income property		28,342			—				—			—				—			28,342

Owner occupied		36,211			—				—			—				—			36,211

Consumer		151,049			75				6,475			—				—			157,599

Total		$	2,336,039		$	37,758			$	151,913		$	—			$	—		2,525,710

Less:
Allowance for loan losses																			52,244

Noncovered loans, net																			$	2,473,466

Noncovered_Other_Real_Estate_O

Noncovered Other Real Estate Owned	12 Months Ended
	Dec. 31, 2013
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]	'
Noncovered Other Real Estate Owned	'
	Noncovered Other Real Estate Owned
	The following table sets forth activity in noncovered OREO for the period:


		December 31, 2013			December 31, 2012
		(in thousands)
	Noncovered OREO:
	Balance, beginning of period	$	10,676		$	22,893

	Established through acquisitions	14,708			—

	Transfers in, net of write-downs ($90 and $205, respectively)	9,273			7,461

	Additions to OREO	3,577			11

	Additional OREO write-downs	(1,753		)	(4,816		)
	Proceeds from sale of OREO property	(13,903		)	(15,689		)
	Net gain on sale of OREO	1,256			816

	Total noncovered OREO, end of period	$	23,834		$	10,676

Covered_Assets_and_FDIC_Losssh

Covered Assets and FDIC Loss-sharing Asset	12 Months Ended
	Dec. 31, 2013
Covered Assets And FDIC Loss Sharing Asset	'
Covered Assets and FDIC Loss sharing Asset	'
	Covered Assets and FDIC Loss-sharing Asset
	Covered Assets
	Covered assets consist of loans and OREO acquired in certain FDIC-assisted acquisitions during 2010 and 2011, for which the Bank entered into loss-sharing agreements, whereby the FDIC will cover a substantial portion of future losses on loans (and related unfunded loan commitments), OREO and certain accrued interest on loans during the terms of the agreements. Under the terms of the loss-sharing agreements, the FDIC will absorb 80% of losses and share in 80% of loss recoveries up to specified amounts. With respect to loss-sharing agreements for two acquisitions completed in 2010, after those specified amounts, the FDIC will absorb 95% of losses and share in 95% of loss recoveries. The loss-sharing provisions of the agreements for commercial and single-family mortgage loans are in effect for five and ten years, respectively, from the acquisition dates and the loss recovery provisions are in effect for eight and ten years, respectively, from the acquisition dates.
	Ten years and forty-five days after the acquisition dates, the Bank shall pay to the FDIC a clawback in the event the losses from the acquisitions fail to reach stated levels. The amount of the clawback is determined by a formula specified in each individual loss-sharing agreement. As of December 31, 2013 and 2012, the net present value of the Bank’s estimated clawback liability is $3.9 million and $3.6 million, respectively, which is included in other liabilities on the Consolidated Balance Sheet.
	The following is an analysis of our covered loans, net of related allowance for losses as of December 31, 2013 and 2012:


			December 31, 2013				December 31, 2012
	Covered loans:		(dollars in thousands)
	Commercial business		$	72,870			$	125,373

	Real estate:
	One-to-four family residential		41,642				57,150

	Commercial and multifamily residential		170,879				233,106

	Total real estate		212,521				290,256

	Real estate construction:
	One-to-four family residential		14,781				25,398

	Commercial and multifamily residential		6,869				15,251

	Total real estate construction		21,650				40,649

	Consumer		34,101				44,516

	Subtotal of covered loans		341,142				500,794

	Less:
	Valuation discount resulting from acquisition accounting		43,297				79,401

	Allowance for loan losses		20,174				30,056

	Covered loans, net of valuation discounts and allowance for loan losses		$	277,671			$	391,337

	Acquired impaired loans are accounted for under ASC 310-30 and initially measured at fair value based on expected future cash flows over the life of the loans. Acquired loans that have common risk characteristics are aggregated into pools. The Company remeasures contractual and expected cash flows, at the pool-level, on a quarterly basis.
	Contractual cash flows are calculated based upon the loan pool terms after applying a prepayment factor. Calculation of the applied prepayment factor for contractual cash flows is the same as described below for expected cash flows.
	Inputs to the determination of expected cash flows include cumulative default and prepayment data as well as loss severity and recovery lag information. Cumulative default and prepayment data are calculated via a transition matrix. The transition matrix is a matrix of probability values that specifies the probability of a loan pool transitioning into a particular delinquency state (e.g. 0-30 days past due, 31 to 60 days, etc.) given its delinquency state at the remeasurement date. Loss severity factors are based upon either actual charge-off data within the loan pools or industry averages and recovery lags are based upon the collateral within the loan pools.
	Acquired impaired loans are also subject to the Company’s internal and external credit review and are risk rated using the same criteria as loans originated by the Company. However, risk ratings are not a clear indicator of losses on acquired loans as the loans were acquired with a significant discount and a majority of the losses are recoverable from the FDIC under the loss-sharing agreements.
	Losses attributable to draws on acquired loans, advanced subsequent to the loan acquisition date, are accounted for under ASC 450-20 and those amounts are also subject to the Company’s internal and external credit review. An allowance for loan losses is estimated in a similar manner as the originated loan portfolio, and a provision for loan losses is charged to earnings as necessary.
	The excess of cash flows expected to be collected over the initial fair value of acquired impaired loans is referred to as the accretable yield and is accreted into interest income over the estimated life of the acquired loans using the effective yield method. Other adjustments to the accretable yield include changes in the estimated remaining life of the acquired loans, changes in expected cash flows and changes of indices for acquired loans with variable interest rates.
	The following table shows the changes in accretable yield for acquired loans for the years ended December 31, 2013, 2012, and 2011:


			Years Ended December 31,
			2013				2012				2011
			(in thousands)
	Balance at beginning of period		$	166,888			$	259,669			$	256,572

	Additions resulting from acquisitions		—				—				59,810

	Accretion		(51,816		)		(86,671		)		(90,378		)
	Disposals		(6,898		)		(12,856		)		(31,483		)
	Reclassifications from nonaccretable difference		(4,267		)		6,746				65,148

	Balance at end of period		$	103,907			$	166,888			$	259,669

	During the year ended December 31, 2013, the Company recorded a provision recapture for losses on covered loans of $3.3 million. Of this amount, $1.7 million was impairment recapture calculated in accordance with ASC 310-30 and $1.6 million was a provision recapture to adjust the allowance for loss calculated under ASC 450-20 for draws on acquired loans. The impact to earnings of the $3.3 million of provision recapture for covered loans was substantially offset through noninterest income by a charge to the change in FDIC loss-sharing asset. For the year ended December 31, 2012, the Company recorded a provision for loan losses of $25.9 million which was partially offset by an increase to the FDIC loss-sharing asset and for the year ended December 31, 2011, the Company recorded a provision recapture for losses on covered loans of $1.6 million which was partially offset by a charge to the change in FDIC loss-sharing asset.
	The changes in the ALLL for covered loans for the years ended December 31, 2013, 2012, and 2011 are summarized as follows:


			Years Ended December 31,
		2013				2012				2011
		(in thousands)
Balance at beginning of year		$	30,056			$	4,944			$	6,055

Loans charged off		(13,853		)		(5,112		)		(1,488		)
Recoveries		7,232				4,332				2,025

Provision charged to expense		(3,261		)		25,892				(1,648		)

Balance at end of year		$	20,174			$	30,056			$	4,944

The following is an analysis of the credit quality of our covered loan portfolio as of December 31, 2013 and 2012:


		Pass				Special Mention				Substandard				Doubtful		Loss		Total
December 31, 2013		(in thousands)
Covered loans:
Commercial business:
Secured		$	48,510			$	2,849			$	18,291			$	—	$	—	$	69,650

Unsecured		2,732				396				92				—		—		3,220

Real estate:
One-to-four family residential		35,066				1,842				4,734				—		—		41,642

Commercial and multifamily residential:
Commercial land		10,778				198				7,589				—		—		18,565

Income property		55,985				3,950				10,657				—		—		70,592

Owner occupied		67,653				111				13,958				—		—		81,722

Real estate construction:
One-to-four family residential:
Land and acquisition		4,674				2,739				1,936				—		—		9,349

Residential construction		3,008				—				2,424				—		—		5,432

Commercial and multifamily residential:
Income property		3,806				—				1,709				—		—		5,515

Owner occupied		1,074				—				280				—		—		1,354

Consumer		30,722				33				3,319				27		—		34,101

Total		$	264,008			$	12,118			$	64,989			$	27	$	—	341,142

Less:
Valuation discount resulting from acquisition accounting																		43,297

Allowance for loan losses																		20,174

Covered loans, net																		$	277,671



		Pass				Special Mention				Substandard				Doubtful		Loss		Total
December 31, 2012		(in thousands)
Covered loans:
Commercial business:
Secured		$	71,621			$	1,823			$	45,150			$	—	$	—	$	118,594

Unsecured		4,988				—				1,791				—		—		6,779

Real estate:
One-to-four family residential		44,782				1,344				11,024				—		—		57,150

Commercial and multifamily residential:
Commercial land		16,336				—				10,292				—		—		26,628

Income property		81,205				864				23,315				—		—		105,384

Owner occupied		82,222				3,318				15,554				—		—		101,094

Real estate construction:
One-to-four family residential:
Land and acquisition		4,817				3,273				5,743				—		—		13,833

Residential construction		6,050				—				5,515				—		—		11,565

Commercial and multifamily residential:
Income property		4,419				—				7,901				—		—		12,320

Owner occupied		1,107				—				1,824				—		—		2,931

Consumer		38,973				381				5,162				—		—		44,516

Total		$	356,520			$	11,003			$	133,271			$	—	$	—	500,794

Less:
Valuation discount resulting from acquisition accounting																		79,401

Allowance for loan losses																		30,056

Covered loans, net																		$	391,337

The Company did not acquire any loans accounted for under ASC 310-30 during 2013 or 2012.



The following table sets forth activity in covered OREO at carrying value for the years ended December 31, 2013 and 2012:



		December 31, 2013				December 31, 2012
		(in thousands)
Covered OREO:
Balance, beginning of period		$	16,311			$	28,126

Transfers in		8,827				14,166

Additional OREO write-downs		(282		)		(3,484		)
Proceeds from sale of OREO property		(22,046		)		(33,315		)
Net gain on sale of OREO		9,283				10,818

Total covered OREO, end of period		$	12,093			$	16,311

The covered OREO is covered by loss-sharing agreements with the FDIC in which the FDIC will assume 80% of additional write-downs and losses on covered OREO sales, or 95%, if applicable, of additional write-downs and losses on covered OREO sales if the minimum loss share thresholds are met.
FDIC Loss-sharing Asset
At December 31, 2013 and 2012, the FDIC loss-sharing asset is comprised of an FDIC indemnification asset of $37.9 million and $87.7 million, respectively, and an FDIC receivable of $2.0 million and $8.6 million, respectively. The indemnification represents the cash flows the Company expects to collect from the FDIC under the loss-sharing agreements and the FDIC receivable represents the reimbursable amounts from the FDIC that have not yet been received.
For covered loans, the Company remeasures contractual and expected cash flows on a quarterly basis. When the quarterly remeasurement process results in a decrease in expected cash flows due to an increase in expected credit losses, impairment is recorded. As a result of this impairment, the indemnification asset is increased to reflect anticipated future cash to be received from the FDIC. Consistent with the loss-sharing agreements between the Company and the FDIC, the amount of the increase to the indemnification asset is measured as 80% of the resulting impairment.
Alternatively, when the quarterly remeasurement results in an increase in expected future cash flows due to a decrease in expected credit losses, the nonaccretable difference decreases and the effective yield of the related loan portfolio is increased. As a result of the improved expected cash flows, the indemnification asset would be reduced first by the amount of any impairment previously recorded and, second, by increased amortization over the remaining life of the related loss-sharing agreement.
The following table shows a detailed analysis of the FDIC loss-sharing asset for the years ending December 31, 2013 and 2012:


		2013				2012
		(in thousands)
Balance at beginning of period		$	96,354			$	175,071

Adjustments not reflected in income:
Cash received from the FDIC		(9,246		)		(54,649		)
FDIC reimbursable losses, net		(2,245		)		399

Adjustments reflected in income:
Amortization, net		(36,729		)		(42,940		)
Loan impairment (recapture)		(2,609		)		20,714

Sale of other real estate		(6,177		)		(7,789		)
Write-downs of other real estate		364				5,190

Other		134				358

Balance at end of period		$	39,846			$	96,354

Premises_and_Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Premises and Equipment	'
	Premises and Equipment
	Land, buildings, and furniture and equipment, less accumulated depreciation and amortization, were as follows:



		December 31,
		2013			2012
		(in thousands)
	Land	$	48,992		$	39,441

	Buildings	94,878			84,407

	Leasehold improvements	14,254			2,684

	Furniture and equipment	29,465			24,110

	Vehicles	546			438

	Computer software	17,490			13,783

	Total Cost	205,625			164,863

	Less accumulated depreciation and amortization	(50,893		)	(46,155		)
	Total	$	154,732		$	118,708

	Total depreciation and amortization expense was $10.2 million, $6.3 million, and $5.7 million, for the years ended December 31, 2013, 2012, and 2011, respectively.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	Goodwill and Other Intangible Assets
	In accordance with the Intangibles – Goodwill and Other topic of the FASB ASC, goodwill is not amortized but is reviewed for potential impairment at the reporting unit level. Management analyzes its goodwill for impairment on an annual basis and between annual tests in certain circumstances such as material adverse changes in legal, business, regulatory and economic factors. An impairment loss is recorded to the extent that the carrying amount of goodwill exceeds its implied fair value. The Company performed an impairment assessment as of July 31, 2013 and concluded that there was no impairment. As of December 31, 2013 we determined there were no events or circumstances which would more likely than not reduce the fair value of our reporting unit below its carrying amount.
	The core deposit intangible (“CDI”) is evaluated for impairment if events and circumstances indicate a possible impairment. The CDI is amortized on an accelerated basis over an estimated life of 10 years.
	The following table sets forth activity for goodwill and other intangible assets for the period:


		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	Total goodwill, beginning of period	$	115,554		$	115,554		$	109,639

	Established through acquisitions	228,398			—			5,915

	Total goodwill, end of period	343,952			115,554			115,554

	Other intangible assets, net
	Core deposit intangible:
	Gross core deposit intangible balance, beginning of period	32,441			32,441			26,652

	Accumulated amortization, beginning of period	(16,720		)	(12,275		)	(7,956		)
	Core deposit intangible, net, beginning of period	15,721			20,166			18,696

	Established through acquisitions	15,257			—			5,789

	CDI current period amortization	(6,045		)	(4,445		)	(4,319		)
	Total core deposit intangible, end of period	24,933			15,721			20,166

	Intangible assets not subject to amortization	919			—			—

	Other intangible assets, net at end of period	25,852			15,721			20,166

	Total goodwill and intangible assets, end of period	$	369,804		$	131,275		$	135,720

	The following table provides the estimated future amortization expense of core deposit intangibles for the succeeding five years:



	Years Ending December 31,	(in thousands)
	2014	$	5,963

	2015	4,934

	2016	4,195

	2017	3,361

	2018	2,500

Deposits

Deposits	12 Months Ended
	Dec. 31, 2013
Deposits [Abstract]	'
Deposits	'
	Deposits
	Year-end deposits are summarized in the following table:



		December 31,
		2013		2012
		(in thousands)
	Core deposits:
	Demand and other noninterest-bearing	$	2,171,703	$	1,321,171

	Interest-bearing demand	1,170,006		870,821

	Money market	1,569,261		1,043,459

	Savings	496,444		314,371

	Certificates of deposit less than $100,000	288,943		252,544

	Total core deposits	5,696,357		3,802,366

	Certificates of deposit greater than $100,000	201,498		212,924

	Certificates of deposit insured through CDARS®	19,488		26,720

	Brokered money market accounts	41,765		—

	Subtotal	5,959,108		4,042,010

	Valuation adjustment resulting from acquisition accounting	367		75

	Total deposits	$	5,959,475	$	4,042,085

	Overdrafts of $1.1 million and $528 thousand were reclassified as loan balances at December 31, 2013 and 2012, respectively.
	The following table shows the amount and maturity of time deposits that had balances of $100,000 or greater:



	Years Ending December 31,	(in thousands)
	2014	$	172,422

	2015	28,556

	2016	11,834

	2017	4,810

	2018	2,162

	Thereafter	106

	Total	$	219,890

Federal_Home_Loan_Bank_and_Fed

Federal Home Loan Bank and Federal Reserve Bank Borrowings	12 Months Ended
	Dec. 31, 2013
Federal Home Loan Bank and Federal Reserve Bank Borrowings [Abstract]	'
Federal Home Loan Bank and Federal Reserve Bank Borrowings	'
	Federal Home Loan Bank and Federal Reserve Bank Borrowings
	FEDERAL HOME LOAN BANK
	The Company has entered into borrowing arrangements with the FHLB of Seattle to borrow funds under a short-term floating rate cash management advance program and fixed-term loan agreements. All borrowings are secured by stock of the FHLB and a blanket pledge of qualifying loans receivable. At December 31, 2013 FHLB advances were scheduled to mature as follows:



			Federal Home Loan Bank Advances
			Fixed rate advances
			Wtd Avg Rate			Amount
			(dollars in thousands)
	Within 1 year		0.23	%		$	30,000

	Over 1 through 5 years		5.66	%		1,000

	Due after 10 years		5.37	%		5,000

	Total					36,000

	Valuation adjustment from acquisition accounting					606

	Total					$	36,606

	The maximum, average outstanding and year-end balances and average interest rates on advances from the FHLB were as follows for the years ended December 31, 2013, 2012 and 2011:



			Years ended December 31,
			2013				2012			2011
			(dollars in thousands)
	Balance at end of year		$	36,606			$	6,644		$	119,009

	Average balance during the year		$	51,030			$	100,337		$	120,419

	Maximum month-end balance during the year		$	190,631			$	118,967		$	127,426

	Weighted average rate during the year		1.12		%		2.79		%	2.76		%
	Weighted average rate at December 31		1.09		%		5.42		%	2.81		%
	FHLB advances are collateralized by the following:



			December 31,
			2013				2012
			(in thousands)
	Recorded value of blanket pledge on loans receivable		$	1,075,389			$	443,419

	Total		$	1,075,389			$	443,419

	FHLB borrowing capacity		$	1,037,159			$	435,189

	FEDERAL RESERVE BANK
	The Company is also eligible to borrow under the Federal Reserve Bank’s primary credit program, including the Term Auction Facility auctions. All borrowings are secured by certain pledged available for sale investment securities.
	Although the Company has not had FRB borrowings in the last three years, the Company pledges securities and loans for borrowing capacity at the Federal Reserve Bank.
	The following table shows amounts pledged to the Federal Reserve Bank:



			December 31,
			2013				2012
			(in thousands)
	Fair value of investment securities		$	40,210			$	45,641

	Recorded value of pledged commercial loans		45,242				13,815

Total		$	85,452			$	59,456

Federal Reserve Bank borrowing capacity		$	85,452			$	59,456

Other_Borrowings

Other Borrowings	12 Months Ended
Other Borrowings	Dec. 31, 2013
Other Borrowings [Abstract]	'
Other Borrowings	'
	Other Borrowings
	Securities Sold Under Agreements to Repurchase
	The Company has entered into wholesale repurchase agreements with certain brokers. At December 31, 2013 and 2012, the Company held $25.0 million in wholesale repurchase agreements with an interest rate of 1.88%. Securities available for sale with a carrying amount of $28.2 million at December 31, 2013 were pledged as collateral for the repurchase agreement borrowings. The broker holds the securities while the Company continues to receive the principal and interest payments from the securities. Upon maturity of the agreement, the pledged securities will be returned to the Company.

Derivatives_and_Balance_Sheet_

Derivatives and Balance Sheet Offsetting	12 Months Ended
	Dec. 31, 2013
General Discussion of Derivative Instruments and Hedging Activities [Abstract]	'
Derivatives and Balance Sheet Offsetting	'
	Derivatives and Balance Sheet Offsetting
	The Company periodically enters into certain commercial loan interest rate swap agreements in order to provide commercial loan customers the ability to convert from variable to fixed interest rates. Under these agreements, the Company enters into a variable-rate loan agreement with a customer in addition to a swap agreement. This swap agreement effectively converts the customer’s variable rate loan into a fixed rate. The Company then enters into a corresponding swap agreement with a third party in order to offset its exposure on the variable and fixed components of the customer agreement. As the interest rate swap agreements with the customers and third parties are not designated as hedges under the Derivatives and Hedging topic of the FASB ASC, the instruments are marked to market in earnings. The notional amount of open interest rate swap agreements at December 31, 2013 and 2012 was $179.5 million and $177.0 million, respectively. There was no impact to the statement of operations for the years ending December 31, 2013, 2012 and 2011.
	The following table presents the fair value and balance sheet classification of derivatives not designated as hedging instruments at December 31, 2013 and 2012:


		Asset Derivatives									Liability Derivatives
		2013						2012			2013						2012
	(in thousands)	Balance Sheet		Fair Value				Balance Sheet	Fair Value		Balance Sheet		Fair Value				Balance Sheet	Fair Value
		Location						Location			Location						Location
	Interest rate contracts	Other assets		$	9,044			Other assets	$	14,921	Other liabilities		$	9,044			Other liabilities	$	14,921

	The Company is party to interest rate swap agreements and repurchase agreements that are subject to enforceable master netting arrangements or similar agreements. Under these agreements, the Company may have the right to net settle multiple contracts with the same counterparty. The following tables show the gross interest rate swap agreements and repurchase agreements in the consolidated balance sheets and the respective collateral received or pledged in the form of other financial instruments, which are generally marketable securities. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of overcollateralization are not shown.


		Gross Amounts of Recognized Assets/Liabilities				Gross Amounts Offset in the Consolidated Balance Sheets			Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets
											Collateral Posted				Net Amount
	December 31, 2013	(in thousands)
	Assets
	Interest rate contracts	$	9,044			$	—		$	9,044	$	—			$	9,044

	Liabilities
	Interest rate contracts	$	9,044			$	—		$	9,044	$	(9,044	)		$	—

	Repurchase agreements	$	25,000			$	—		$	25,000	$	(25,000	)		$	—


	December 31, 2012
	Assets
	Interest rate contracts	$	14,921			$	—		$	14,921	$	—			$	14,921

	Liabilities
	Interest rate contracts	$	14,921			$	—		$	14,921	$	(14,921	)		$	—

	Repurchase agreements	$	25,000			$	—		$	25,000	$	(25,000	)		$	—

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
Employee Benefit Plans	'
	Employee Benefit Plans
	401(k) Plan
	The Company maintains defined contribution and profit sharing plans in conformity with the provisions of section 401(k) of the Internal Revenue Code. The Columbia Bank 401(k) and Profit Sharing Plan (the “401(k) Plan”), permits eligible Columbia Bank employees, those who are at least 18 years of age and have completed six months of service, to contribute up to 75% of their eligible compensation to the 401(k) Plan. On a per pay period basis the Company is required to match 50% of employee contributions up to 3% of each employee’s eligible compensation. Additionally, as determined annually by the Board of Directors of the Company, the 401(k) Plan provides for a non-matching discretionary profit sharing contribution. The Company contributed $1.9 million during 2013, $1.4 million during 2012, and $1.2 million during 2011, in matching funds to the 401(k) Plan. The Company’s discretionary profit sharing contributions were $4.0 million during 2013, $2.9 million during 2012 and $2.6 million during 2011.
	Employee Stock Purchase Plan
	The Company maintains an “Employee Stock Purchase Plan” (the “ESP Plan”) in which substantially all employees of the Company are eligible to participate. The ESP Plan provides participants the opportunity to purchase common stock of the Company at a discounted price. Under the ESP Plan, participants can purchase common stock of the Company for 90% of the lowest price on either the first or last day in each of two six month look-back periods. The look-back periods are January 1st through June 30th and July 1st through December 31st of each calendar year. The 10% discount is recognized by the Company as compensation expense and does not have a material impact on net income or earnings per common share. Participants of the ESP Plan purchased 32,598 shares for $686 thousand in 2013, 39,393 shares for $725 thousand in 2012 and 39,989 shares for $690 thousand in 2011. At December 31, 2013 there were 575,912 shares available for purchase under the ESP plan.
	Supplemental Compensation Plan
	The Company maintains supplemental compensation arrangements (“Unit Plans”) to provide benefits for certain employees. The Unit Plans generally vest over a 4-10 year period and provide a fixed annual benefit over a 5-10 year period. At December 31, 2013 and 2012 the liability associated with these plans was $4.7 million and $4.7 million, respectively. Expense associated with these plans for the years ended December 31, 2013, 2012 and 2011 was $458 thousand, $677 thousand and $655 thousand, respectively.
	Supplemental Executive Retirement Plan
	The Company maintains a supplemental executive retirement plan (the “SERP”), a nonqualified deferred compensation plan that provides retirement benefits to certain highly compensated executives. The SERP is unsecured and unfunded and there are no program assets. The SERP projected benefit obligation, which represents the vested net present value of future payments to individuals under the plan is accrued over the estimated remaining term of employment of the participants and has been determined by actuarial valuation using the “RP-2000 Annuity Mortality Table” for the mortality assumptions and discount rate of 5.10% for both 2013 and 2012. Additional assumptions and features of the plan are a normal retirement age of 65 and a 2% annual cost of living benefit adjustment. The projected benefit obligation is included in other liabilities on the Consolidated Balance Sheets.
	The following table reconciles the accumulated liability for the projected benefit obligation:



		December 31,
		2013			2012
		(in thousands)
	Balance at beginning of year	$	11,616		$	11,237

	Established through acquisitions	3,398			—

	Change in actuarial loss	2,212			(80		)

	Benefit expense	1,880			1,017

	Benefit payments	(2,683		)	(558		)
	Balance at end of year	$	16,423		$	11,616

	The benefits expected to be paid in conjunction with the SERP are presented in the following table:



	Years Ending December 31,	(in thousands)
	2014	$	1,702

	2015	975

	2016	994

	2017	1,088

	2018	1,355

	2019 through 2023	8,852

	Total	$	14,966

Commitments_and_Contingent_Lia

Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingent Liabilities	'
	Commitments and Contingent Liabilities
	Lease Commitments: The Company leases locations as well as equipment under various non-cancellable operating leases that expire between 2014 and 2045. The majority of the leases contain renewal options and provisions for increases in rental rates based on an agreed upon index or predetermined escalation schedule. As of December 31, 2013, minimum future rental payments, exclusive of taxes and other charges, of these leases were:


	Years Ending December 31,	(in thousands)
	2014	$	8,033

	2015	6,787

	2016	4,847

	2017	3,642

	2018	3,111

	Thereafter	13,105

	Total minimum payments	$	39,525

	Total rental expense on buildings and equipment, net of rental income of $673 thousand, $639 thousand and $655 thousand, was $8.5 million, $4.5 million and $4.6 million, for the years ended December 31, 2013, 2012 and 2011, respectively.
	Financial Instruments with Off-Balance Sheet Risk: In the normal course of business, the Company makes loan commitments (typically unfunded loans and unused lines of credit) and issues standby letters of credit to accommodate the financial needs of its customers.
	Standby letters of credit commit the Company to make payments on behalf of customers under specified conditions. Historically, no significant losses have been incurred by the Company under standby letters of credit. Both arrangements have credit risk essentially the same as that involved in extending loans to customers and are subject to the Company’s normal credit policies, including collateral requirements, where appropriate. At December 31, 2013 and 2012, the Company’s loan commitments amounted to $1.37 billion and $888.5 million, respectively. Standby letters of credit were $36.7 million and $19.5 million at December 31, 2013 and 2012, respectively. In addition, commitments under commercial letters of credit used to facilitate customers’ trade transactions and other off-balance sheet liabilities amounted to $2.7 million and $46 thousand at December 31, 2013 and 2012, respectively.
	Legal Proceedings: The Company and its subsidiaries are from time to time defendants in and are threatened with various legal proceedings arising from their regular business activities. Management, after consulting with legal counsel, is of the opinion that the ultimate liability, if any, resulting from these pending or threatened actions and proceedings will not have a material effect on the financial statements of the Company.

Shareholders_Equity

Shareholders' Equity	12 Months Ended
Shareholders' Equity	Dec. 31, 2013
Stockholders' Equity Note [Abstract]	'
Shareholders' Equity	'
	Shareholders’ Equity
	Preferred Stock. In conjunction with the acquisition of West Coast, the Company issued 8,782 shares of mandatorily convertible cumulative participating preferred stock, Series B. The Series B Preferred Stock is not subject to the operation of a sinking fund. The Series B Preferred Stock is not redeemable by the Company and is perpetual with no maturity. The holders of Series B Preferred Stock have no general voting rights. If the Company declares and pays a dividend to its common shareholders, it must declare and pay to its holders of Series B Preferred Stock, on the same date, a dividend in an amount per share of the Series B Preferred Stock that is intended to provide such holders dividends in the amount they would have received if shares of Series B Preferred Stock had been converted into Common Stock as of that date. The outstanding shares of Series B Preferred Stock are convertible into 102,363 shares of Company Common Stock.
	Warrants to Purchase Common Stock. In conjunction with the acquisition of West Coast, the Company issued Amended and Restated Warrants (the "Warrants") to purchase an aggregate 2,214,639 shares of Company common stock at an exercise price of $8.58 per share or $19.0 million in aggregate. The Company's Amended and Restated Warrants amended and restated Class C Warrants previously issued by West Coast. The Warrants were immediately exercisable and will expire on October 23, 2016.
	Dividends. On January 24, 2013, the Company declared a quarterly cash dividend of $0.10 per share payable on February 20, 2013 to shareholders of record as of the close of business on February 6, 2013. On April 24, 2013 the Company declared a quarterly cash dividend of $0.10 per share payable on May 22, 2013 to shareholders of record at the close of business May 8, 2013. On July 25, 2013 the Company declared a quarterly cash dividend of $0.10 per share payable on August 21, 2013 to shareholders of record at the close of business August 7, 2013. On October 24, 2013 the Company declared a quarterly cash dividend of $0.11 per share payable on November 20, 2013 to shareholders of record at the close of business November 6, 2013. Subsequent to year end, on January 23, 2014 the Company declared a quarterly cash dividend of $0.12 per share payable on February 19, 2014, to shareholders of record at the close of business on February 5, 2014.
	The payment of cash dividends is subject to Federal regulatory requirements for capital levels and other restrictions. In addition, the cash dividends paid by Columbia Bank to the Company are subject to both Federal and State regulatory requirements.
	Stock Repurchase Program
	In 2011, the Board of Directors authorized the repurchase of 2 million shares of Columbia common stock. The Company may purchase the shares from time to time in the open market or in private transactions, under conditions which allow such repurchases to be accretive to earnings per share while maintaining capital ratios that exceed the guidelines for a well-capitalized financial institution. No shares were repurchased under the stock repurchase program during 2013, 2012 or 2011.

Fair_Value_Accounting_and_Meas

Fair Value Accounting and Measurement	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Accounting and Measurement	'
	Fair Value Accounting and Measurement
	The Fair Value Measurements and Disclosures topic of the FASB ASC defines fair value, establishes a consistent framework for measuring fair value and expands disclosure requirements about fair value. We hold fixed and variable rate interest-bearing securities, investments in marketable equity securities and certain other financial instruments, which are carried at fair value. Fair value is determined based upon quoted prices when available or through the use of alternative approaches, such as matrix or model pricing, when market quotes are not readily accessible or available.
	The valuation techniques are based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our own market assumptions. These two types of inputs create the following fair value hierarchy:
	Level 1 – Quoted prices for identical instruments in active markets that are accessible at the measurement date.
	Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model derived valuations whose inputs are observable or whose significant value drivers are observable.
	Level 3 – Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable.
	Fair values are determined as follows:
	Securities at fair value are priced using a combination of market activity, industry recognized information sources, yield curves, discounted cash flow models and other factors. These fair value calculations are considered a Level 2 input method under the provisions of the Fair Value Measurements and Disclosures topic of the FASB ASC for all securities other than U.S. Treasury notes, which are considered a Level 1 input method.
	Interest rate contract positions are valued in models, which use as their basis, readily observable market parameters and are classified within Level 2 of the valuation hierarchy.
	The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at December 31, 2013 and 2012 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:


			Fair value at			Fair Value Measurements at Reporting Date Using
			December 31, 2013			Level 1			Level 2			Level 3
			(in thousands)
	Assets
	Securities available for sale
	U.S. government agency and sponsored enterprise mortgage-back securities and collateralized mortgage obligations		$	948,408		$	—		$	948,408		$	—

	State and municipal securities		364,470			—			364,470			—

	U.S. government agency and government-sponsored enterprise securities		326,039			—			326,039			—

	U.S. government securities		20,114			20,114			—			—

	Other securities		5,080			—			5,080			—

	Total securities available for sale		$	1,664,111		$	20,114		$	1,643,997		$	—

	Other assets (Interest rate contracts)		$	9,044		$	—		$	9,044		$	—

	Liabilities
	Other liabilities (Interest rate contracts)		$	9,044		$	—		$	9,044		$	—



			Fair value at			Fair Value Measurements at Reporting Date Using
			December 31, 2012			Level 1			Level 2			Level 3
			(in thousands)
	Assets
	Securities available for sale
	U.S. government agency and sponsored enterprise mortgage-back securities and collateralized mortgage obligations		$	572,369		$	—		$	572,369		$	—

	State and municipal debt securities		285,575			—			285,575			—

	U.S. government agency and government-sponsored enterprise securities		120,501			—			120,501			—

	U.S. government securities		19,828			19,828			—			—

	Other securities		3,392			—			3,392			—

	Total securities available for sale		$	1,001,665		$	19,828		$	981,837		$	—

	Other assets (Interest rate contracts)		$	14,921		$	—		$	14,921		$	—

	Liabilities
	Other liabilities (Interest rate contracts)		$	14,921		$	—		$	14,921		$	—

	There were no transfers between Level 1 and Level 2 of the valuation hierarchy during the years ended December 31, 2013 and 2012. The Company recognizes transfers between levels of the valuation hierarchy based on the valuation level at the end of the reporting period.
	Nonrecurring Measurements
	Certain assets and liabilities are measured at fair value on a nonrecurring basis after initial recognition such as loans measured for impairment and OREO. The following methods were used to estimate the fair value of each such class of financial instrument:
	Impaired loans—A loan is considered to be impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due (both interest and principal) according to the contractual terms of the loan agreement. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, a loan’s observable market price, or the fair market value of the collateral less estimated costs to sell if the loan is a collateral-dependent loan. Generally, the Company utilizes the fair market value of the collateral to measure impairment. The impairment evaluations are performed in conjunction with the ALLL process on a quarterly basis by officers in the Special Credits group, which reports to the Chief Credit Officer. The Real Estate Appraisal Services Department ("REASD"), which also reports to the Chief Credit Officer, is responsible for obtaining appraisals from third-parties or performing internal evaluations. If an appraisal is obtained from a third-party, the REASD reviews the appraisal to evaluate the adequacy of the appraisal report, including its scope, methods, accuracy, and reasonableness.
	Other real estate owned and other personal property owned ("OPPO")—OREO and OPPO is real and personal property that the Bank has taken ownership of in partial or full satisfaction of a loan or loans. OREO and OPPO are generally measured based on the item's fair market value as indicated by an appraisal or a letter of intent to purchase. OREO and OPPO are recorded at the lower of the carrying amount or fair value less estimated costs to sell. This amount becomes the property’s new basis. Any write-downs based on the property fair value less estimated costs to sell at the date of acquisition are charged to the allowance for loan and lease losses. Management periodically reviews OREO and OPPO in an effort to ensure the property is carried at the lower of its new basis or fair value, net of estimated costs to sell. Any write-downs subsequent to acquisition are charged to earnings. The initial and subsequent write-down evaluations are performed by officers in the Special Credits group, which reports to the Chief Credit Officer. The REASD obtains appraisals from third-parties for OREO and OPPO and performs internal evaluations. If an appraisal is obtained from a third-party, the REASD reviews the appraisal to evaluate the adequacy of the appraisal report, including its scope, methods, accuracy, and reasonableness.
The following table sets forth the Company’s assets that were measured using fair value estimates on a nonrecurring basis at December 31, 2013 and 2012:


		Fair value at			Fair Value Measurements at Reporting Date Using									Losses During the Year Ended
		December 31, 2013			Level 1			Level 2			Level 3			31-Dec-13
		(in thousands)
Impaired loans		$	8,973		$	—		$	—		$	8,973		$	1,536

Noncovered OREO		5,080			—			—			5,080			994

Covered OREO		613			—			—			613			236

		$	14,666		$	—		$	—		$	14,666		$	2,766



		Fair value at			Fair Value Measurements at Reporting Date Using									Losses During the Year Ended
		December 31, 2012			Level 1			Level 2			Level 3			December 31, 2012
		(in thousands)
Impaired loans		$	10,599		$	—		$	—		$	10,599		$	3,891

Noncovered OREO		10,970			—			—			10,970			3,788

Covered OREO		2,663			—			—			2,663			1,032

Noncovered OPPO		210			—			—			210			39

		$	24,442		$	—		$	—		$	24,442		$	8,750

The losses on impaired loans disclosed above represent the amount of the specific reserve and/or charge-offs during the period applicable to loans held at period end. The amount of the specific reserve is included in the allowance for loan and lease losses. The losses on noncovered OREO disclosed above represent the write-downs taken at foreclosure that were charged to the allowance for loan and lease losses, as well as subsequent write-downs from updated appraisals that were charged to earnings.
Quantitative information about Level 3 fair value measurements
The range and weighted-average of the significant unobservable inputs used to fair value our Level 3 nonrecurring assets during 2013 and 2012, along with the valuation techniques used, are shown in the following tables:


		Fair value at			Valuation Technique		Unobservable Input	Range (Weighted Average) (1)
		December 31, 2013
		(dollars in thousands)
Impaired loans		$	8,973		Fair Market Value of Collateral		Adjustment to Appraisal Value	N/A (2)

Noncovered OREO		5,080			Fair Market Value of Collateral		Adjustment to Appraisal Value	N/A (2)

Covered OREO		613			Fair Market Value of Collateral		Adjustment to Appraisal Value	N/A (2)

(1) Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable and inventory).
(2) Quantitative disclosures are not provided for impaired loans, noncovered OREO and covered OREO because there were no adjustments made to the appraisal value during the current period.


		Fair value at			Valuation Technique		Unobservable Input	Range (Weighted Average) (1)
		December 31, 2012
		(dollars in thousands)
Impaired loans		$	10,599		Fair Market Value of Collateral		Adjustment to Appraisal Value	N/A (2)

Noncovered OREO		10,970			Fair Market Value of Collateral		Adjustment to Appraisal Value	N/A (2)

Covered OREO		2,663			Fair Market Value of Collateral		Adjustment to Appraisal Value	N/A (2)

Noncovered OPPO		210			Fair Market Value of Collateral		Adjustment to Appraisal Value	N/A (2)

(1) Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable and inventory).
(2) Quantitative disclosures are not provided for impaired loans, noncovered OREO, covered OREO and noncovered OPPO because there were no adjustments made to the appraisal value during the current period.

Fair value of financial instruments
Because broadly traded markets do not exist for most of the Company’s financial instruments, the fair value calculations attempt to incorporate the effect of current market conditions at a specific time. These determinations are subjective in nature, involve uncertainties and matters of significant judgment and do not include tax ramifications; therefore, the results cannot be determined with precision, substantiated by comparison to independent markets and may not be realized in an actual sale or immediate settlement of the instruments. There may be inherent weaknesses in any calculation technique, and changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results. For all of these reasons, the aggregation of the fair value calculations presented herein do not represent, and should not be construed to represent, the underlying value of the Company.
The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:
Cash and due from banks and interest-earning deposits with banks—The fair value of financial instruments that are short-term or reprice frequently and that have little or no risk are considered to have a fair value that approximates carrying value (Level 1).
Securities available for sale—Securities at fair value, other than U.S. Treasury Notes, are priced using a combination of market activity, industry recognized information sources, yield curves, discounted cash flow models and other factors (Level 2). U.S. Treasury Notes are priced using quotes in active markets (Level 1).
Federal Home Loan Bank stock—The fair value is based upon the par value of the stock which equates to its carrying value (Level 2).
Loans—Loans are not recorded at fair value on a recurring basis. Nonrecurring fair value adjustments are periodically recorded on impaired loans that are measured for impairment based on the fair value of collateral. For most performing loans, fair value is estimated using expected duration and lending rates that would have been offered on December 31, 2013 or 2012 for loans which mirror the attributes of the loans with similar rate structures and average maturities. The fair values resulting from these calculations are reduced by an amount representing the change in estimated fair value attributable to changes in borrowers’ credit quality since the loans were originated. For nonperforming loans, fair value is estimated by applying a valuation discount based upon loan sales data from the FDIC. For covered loans, fair value is estimated by discounting the expected future cash flows using a lending rate that would have been offered on December 31, 2013 (Level 3).
FDIC loss-sharing asset —The fair value of the FDIC loss-sharing asset is estimated based on discounting the expected future cash flows using an estimated market rate (Level 3).
Interest rate contracts—Interest rate contracts are valued in models, which use as their basis, readily observable market parameters (Level 2).
Deposits—For deposits with no contractual maturity, the fair value is equal to the carrying value (Level 1). The fair value of fixed maturity deposits is based on discounted cash flows using the difference between the deposit rate and current market rates for deposits of similar remaining maturities (Level 2).
FHLB advances—The fair value of FHLB advances is estimated based on discounting the future cash flows using the market rate currently offered (Level 2).

Repurchase agreements—The fair value of securities sold under agreement to repurchase is estimated based on discounting the future cash flows using the market rate currently offered (Level 2).
Other Financial Instruments—The majority of our commitments to extend credit and standby letters of credit carry current market interest rates if converted to loans, as such, carrying value is assumed to equal fair value.
The following tables summarize carrying amounts and estimated fair values of selected financial instruments for the periods indicated:



		December 31,
		2013
		Carrying			Fair			Level 1			Level 2			Level 3
		Amount			Value
		(in thousands)
Assets
Cash and due from banks		$	165,030		$	165,030		$	165,030		$	—		$	—

Interest-earning deposits with banks		14,531			14,531			14,531			—			—

Securities available for sale		1,664,111			1,664,111			20,114			1,643,997			—

FHLB stock		32,529			32,529			—			32,529			—

Loans held for sale		735			735			—			735			—

Loans		4,444,842			4,605,038			—			—			4,605,038

FDIC loss-sharing asset		39,846			11,248			—			—			11,248

Interest rate contracts		9,044			9,044			—			9,044			—

Liabilities
Deposits		$	5,959,475		$	5,958,747		$	5,449,546		$	509,201		$	—

FHLB advances		36,606			35,080			—			35,080			—

Repurchase agreements		25,000			26,361			—			26,361			—

Interest rate contracts		9,044			9,044			—			9,044			—



		December 31,
		2012
		Carrying			Fair			Level 1			Level 2			Level 3
		Amount			Value
		(in thousands)
Assets
Cash and due from banks		$	124,573		$	124,573		$	124,573		$	—		$	—

Interest-earning deposits with banks		389,353			389,353			389,353			—			—

Securities available for sale		1,001,665			1,001,665			19,828			981,837			—

FHLB stock		21,819			21,819			—			21,819			—

Loans held for sale		2,563			2,563			—			2,563			—

Loans		2,864,803			2,944,317			—			—			2,944,317

FDIC loss-sharing asset		96,354			26,543			—			—			26,543

Interest rate contracts		14,921			14,921			—			14,921			—

Liabilities
Deposits		$	4,042,085		$	4,043,221		$	3,549,821		$	493,400		$	—

FHLB advances		6,644			5,894			—			5,894			—

Repurchase agreements		25,000			26,464			—			26,464			—

Interest rate contracts		14,921			14,921			—			14,921			—

Earnings_Per_Common_Share

Earnings Per Common Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Common Share	'
	Earnings per Common Share
	The Company applies the two-class method of computing basic and diluted EPS. Under the two-class method, EPS is determined for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. The Company issues restricted shares under share-based compensation plans and preferred shares which qualify as participating securities.
	The following table sets forth the computation of basic and diluted earnings per share for the periods indicated:


		Year Ended December 31,
		2013		2012		2011
		(in thousands except per share)
	Basic EPS:
	Net income	$	60,016	$	46,143	$	48,037

	Less: Earnings allocated to participating securities
	Preferred shares	95		—		—

	Nonvested restricted shares	523		443		450

	Earnings allocated to common shareholders	$	59,398	$	45,700	$	47,587

	Weighted average common shares outstanding	47,993		39,260		39,103

	Basic earnings per common share	$	1.24	$	1.16	$	1.22

	Diluted EPS:
	Earnings allocated to common shareholders (1)	$	59,407	$	45,700	$	47,588

	Weighted average common shares outstanding	47,993		39,260		39,103

	Dilutive effect of equity awards and warrants	1,058		3		77

	Weighted average diluted common shares outstanding	49,051		39,263		39,180

	Diluted earnings per common share	$	1.21	$	1.16	$	1.21

	Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	64		9		53

ShareBased_Payments

Share-Based Payments	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Share-Based Payments	'
	Share-Based Payments
	At December 31, 2013, the Company had one equity compensation plan (the “Plan”), which is shareholder approved, that provides for the granting of share options and shares to eligible employees and directors up to 3,113,592 shares.
	Share Awards: Restricted share awards provide for the immediate issuance of shares of Company common stock to the recipient, with such shares held in escrow until certain service conditions are met, generally four years of continual service. Recipients of restricted shares do not pay any cash consideration to the Company for the shares, have the right to vote all shares subject to such grant, and receive all dividends with respect to such shares, whether or not the shares have vested. The fair value of share awards is equal to the fair market value of the Company’s common stock on the date of grant.
	A summary of changes in the Company’s nonvested shares and related information for the years ended December 31, 2013, 2012 and 2011 is presented below:



	Nonvested Shares		Shares			Weighted
						Average
						Grant-Date
						Fair Value
	Nonvested at January 1, 2011		353,283			$	21.14

	Granted		133,350			$	19.45

	Vested		(109,033	)		$	25.72

	Forfeited		(14,925	)		$	18.86

	Nonvested at December 31, 2011		362,675			$	19.24

	Granted		180,841			$	21.32

	Vested		(118,511	)		$	21.65

	Forfeited		(40,915	)		$	18.6

	Nonvested at December 31, 2012		384,090			$	19.54

	Granted		203,441			$	20.78

	Vested		(117,153	)		$	16.9

	Forfeited		(59,780	)		$	20.24

	Nonvested at December 31, 2013		410,598			$	20.79

	As of December 31, 2013, there was $6.4 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Plan. That cost is expected to be recognized over a weighted average period of 2.3 years. The total fair value, as measured on the date of vesting, of shares vested during the years ended December 31, 2013, 2012, and 2011 was $2.5 million, $2.5 million, and $2.2 million, respectively.
	Share Options: Option awards are generally granted with an exercise price equal to the market price of the Company’s stock at the date of grant; those option awards generally vest based on three years of continual service and are exercisable for a five-year period after vesting. Option awards granted have a 10-year maximum term.
	The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model. The fair value of all options is amortized on a straight-line basis over the requisite service periods, which are generally the vesting periods. The expected life of options granted represents the period of time that they are expected to be outstanding. The expected life is determined based on historical experience with similar awards, giving consideration to the contractual terms and vesting schedules. Expected volatilities of our common stock are estimated at the date of grant based on the historical volatility of the stock. The volatility factor is based on historical stock prices over the most recent period commensurate with the estimated expected life of the award. The risk-free interest rate is based on the U.S. Treasury curve in effect at the time of the award. The expected dividend yield is based on dividend trends and the market value of the Company’s stock price at the time of the award.

	A summary of option activity under the Plan as of December 31, 2013, and changes during the year then ended is presented below. The options granted during 2013 relate to the acquisition of West Coast.



	Options		Shares			Weighted			Weighted		Aggregate
						Average			Average		Intrinsic
						Exercise			Remaining		Value
						Price			Contractual		$0
									Term
	Balance at December 31, 2012		25,952			$	20.13

	Granted		222,110			$	64.11

	Forfeited		(83,284	)		$	69.27

	Expired		(12,544	)		$	81.78

	Exercised		(36,037	)		$	11.46

	Balance at December 31, 2013		116,197			$	65.01		2.8		$	550

	Total Exercisable at December 31, 2013		116,197			$	65.01		2.8		$	550

The total intrinsic value of options exercised during the years ended December 31, 2013, 2012, and 2011 was $410 thousand, $5 thousand, and $65 thousand, respectively. No options were granted in 2012 or 2011.
As of December 31, 2013, outstanding stock options consist of the following:



Ranges of		Number of			Weighted Average		Weighted Average			Number of			Weighted Average
Exercise Prices		Option			Remaining		Exercise Price of			Exercisable			Exercise Price of
		Shares			Contractual Life		Option Shares			Option Shares			Exercisable Option
													Shares
$0.00 - $9.99		29,602			5		$	9.91		29,602			$	9.91

$10.00 - $19.99		2,879			1		$	17.36		2,879			$	17.36

$30.00 - $39.99		4,051			3.1		$	30.86		4,051			$	30.86

$40.00 - $49.99		349			4.5		$	44.49		349			$	44.49

$50.00 - $146.41		79,316			2		$	89.14		79,316			$	89.14

$0.00 - $146.41		116,197			2.8		$	65.01		116,197			$	65.01

It is the Company’s policy to issue new shares for share option exercises and share awards. The Company expenses awards of share options and shares on a straight-line basis over the related vesting term of the award. For the 12 months ended December 31, 2013, 2012 and 2011, the Company recognized pre-tax share-based compensation expense of $2.8 million, $1.6 million and $1.6 million, respectively.

Income_Tax

Income Tax	12 Months Ended
Income Tax	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Tax	'
	Income Tax
	The components of income tax expense (benefit) are as follows:


			Years Ended December 31,
			2013				2012				2011
			(in thousands)
	Current tax expense		$	21,581			$	21,218			$	21,688
	Current tax expense		$	21,581			$	21,218			$	21,688
	Deferred tax expense (benefit)		5,413				(3,656		)		(3,783		)
	Deferred tax expense (benefit)		5,413				(3,656		)		(3,783		)
	Total		$	26,994			$	17,562			$	17,905
	Total		$	26,994			$	17,562			$	17,905
	Significant components of the Company’s deferred tax assets and liabilities are as follows:



			December 31,
			2013				2012
			(in thousands)
	Deferred tax assets:
	Allowance for loan and lease losses		$	27,196			$	30,027
	Allowance for loan and lease losses		$	27,196			$	30,027
	Supplemental executive retirement plan		8,565				6,967
	Supplemental executive retirement plan		8,565				6,967
	Stock option and restricted stock		917				682
	Stock option and restricted stock		917				682
	OREO costs		7,929				3,801
	OREO costs		7,929				3,801
	Nonaccrual interest		2,354				193
	Nonaccrual interest		2,354				193
	Purchase accounting		15,551				—
	Purchase accounting		15,551				—
	Unrealized loss on investment securities		7,176				—
	Unrealized loss on investment securities		7,176				—
	Other		1,741				557
	Other		1,741				557
	Total deferred tax assets		71,429				42,227
	Total deferred tax assets		71,429				42,227
	Deferred tax liabilities:
	Asset purchase tax basis difference		(7,754		)		(19,408		)
	FHLB stock dividends		(4,159		)		(1,963		)
	Purchase accounting		—				(745		)
	Purchase accounting		—				(745		)
	Deferred loan fees		(4,512		)		(1,755		)
	Unrealized gain on investment securities		—				(11,150		)
	Unrealized gain on investment securities		—				(11,150		)
	Depreciation		(7,076		)		(1,870		)
	Total deferred tax liabilities		(23,501		)		(36,891		)
	Net deferred tax asset		$	47,928			$	5,336
	Net deferred tax asset		$	47,928			$	5,336
	A reconciliation of the Company’s effective income tax rate with the federal statutory tax rate is as follows:


			Years Ended December 31,
			2013							2012							2011
			Amount				Percent			Amount				Percent			Amount				Percent
			(dollars in thousands)
	Income tax based on statutory rate		$	30,454			35	%		$	22,297			35	%		$	23,080			35	%
	Income tax based on statutory rate		$	30,454			35	%		$	22,297			35	%		$	23,080			35	%
	Reduction resulting from:
	Tax credits		(1,038		)		(1	)%		(504		)		(1	)%		(608		)		(1	)%
	Tax exempt instruments		(4,113		)		(5	)%		(3,906		)		(6	)%		(3,824		)		(6	)%
Life insurance proceeds		(1,250		)		(1	)%		(1,001		)		(2	)%		(766		)		(1	)%
Bargain purchase		—				—	%		—				—	%		(1,036		)		(2	)%
Bargain purchase		—				—	%		—				—	%		(1,036		)		(2	)%
Acquisition costs		1,362				2	%		—				—	%		—				—	%
Acquisition costs		1,362				2	%		—				—	%		—				—	%
Other, net		1,579				1	%		676				1	%		1,059				2	%
Other, net		1,579				1	%		676				1	%		1,059				2	%
Income tax provision		$	26,994			31	%		$	17,562			27	%		$	17,905			27	%
Income tax provision		$	26,994			31	%		$	17,562			27	%		$	17,905			27	%
As of December 31, 2013 and 2012, we had no unrecognized tax benefits. Our policy is to recognize interest and penalties on unrecognized tax benefits in “Provision for income taxes” in the Consolidated Statements of Income. There were no amounts related to interest and penalties recognized for the years ended December 31, 2013 and 2012. The tax years subject to examination by federal and state taxing authorities are the years ending December 31, 2013, 2012, 2011 and 2010.

Regulatory_Capital_Requirement

Regulatory Capital Requirements	12 Months Ended
	Dec. 31, 2013
Regulatory Capital Requirements [Abstract]	'
Regulatory Capital Requirements	'
	Regulatory Capital Requirements
	The Company (on a consolidated basis) and its banking subsidiary are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company and its banking subsidiary's financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and its banking subsidiary must meet specific capital guidelines that involve quantitative measures of assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Prompt corrective action provisions are not applicable to bank holding companies.
	Quantitative measures established by regulation to ensure capital adequacy require the Company and its banking subsidiary to maintain minimum amounts and ratios (set forth in the following table) of total and Tier 1 capital to risk-weighted assets (as defined in the regulations) and of Tier 1 capital to average assets (as defined in the regulations). Management believes, as of December 31, 2013 and 2012, that the Company and Columbia Bank met all capital adequacy requirements to which they are subject.
	As of December 31, 2013, the most recent notification from the Federal Deposit Insurance Corporation categorized Columbia Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the following tables. There are no conditions or events since the notification that management believes have changed Columbia Bank’s category. The Company and its banking subsidiary’s actual capital amounts and ratios as of December 31, 2013 and 2012, are also presented in the following table.



		Actual				For Capital				To Be Well
						Adequacy				Capitalized Under
						Purposes				Prompt
										Corrective Action
										Provision
		Amount		Ratio		Amount		Ratio		Amount		Ratio
		(dollars in thousands)
	As of December 31, 2013
	Total Capital (to risk-weighted assets):
	The Company	$	760,349	14.68	%	$	414,300	8	%	N/A		N/A

	Columbia Bank	$	700,099	13.52	%	$	414,238	8	%	$	517,797	10	%

	Tier 1 Capital (to risk-weighted assets):
	The Company	$	695,489	13.43	%	$	207,150	4	%	N/A		N/A

	Columbia Bank	$	635,248	12.27	%	$	207,119	4	%	$	310,678	6	%

	Tier 1 Capital (to average assets):
	The Company	$	695,489	10.19	%	$	272,891	4	%	N/A		N/A

	Columbia Bank	$	635,248	9.29	%	$	273,560	4	%	$	341,950	5	%

	As of December 31, 2012
	Total Capital (to risk-weighted assets):
	The Company	$	652,704	20.62	%	$	253,242	8	%	N/A		N/A

	Columbia Bank	$	565,677	17.87	%	$	253,244	8	%	$	316,556	10	%

	Tier 1 Capital (to risk-weighted assets):
	The Company	$	612,584	19.35	%	$	126,621	4	%	N/A		N/A

	Columbia Bank	$	525,556	16.6	%	$	126,622	4	%	$	189,933	6	%

	Tier 1 Capital (to average assets):
	The Company	$	612,584	12.78	%	$	191,778	4	%	N/A		N/A

	Columbia Bank	$	525,556	11.07	%	$	189,986	4	%	$	237,483	5	%

Parent_Company_Financial_Infor

Parent Company Financial Information	12 Months Ended
	Dec. 31, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Parent Company Financial Information	'
	Parent Company Financial Information
	Condensed Statements of Income—Parent Company Only


			Years Ended December 31,
			2013				2012				2011
			(in thousands)
	Income
	Dividend from banking subsidiary		$	183,000			$	48,950			$	—

	Interest-earning deposits		68				153				712

	Other income		7				—				17

	Total income		183,075				49,103				729

	Expense
	Compensation and employee benefits		658				182				88

	Long-term obligations		—				—				579

	Other borrowings		258				—				—

	Other expense		4,162				1,193				1,114

	Total expenses		5,078				1,375				1,781

	Income (loss) before income tax expense (benefit) and equity in undistributed net income of subsidiaries		177,997				47,728				(1,052		)

	Income tax expense (benefit)		(1,552		)		(435		)		91

	Income (loss) before equity in undistributed net income of subsidiaries		179,549				48,163				(1,143		)

	Equity in undistributed net income (loss) of subsidiaries		(119,533		)		(2,020		)		49,180

	Net income		$	60,016			$	46,143			$	48,037

	Condensed Balance Sheets—Parent Company Only


			December 31,
			2013				2012
			(in thousands)
	Assets
	Cash and due from banking subsidiary		$	3,006			$	1,729

	Interest-earning deposits		50,678				84,915

	Total cash and cash equivalents		53,684				86,644

	Investment in banking subsidiary		993,002				676,974

	Investment in other subsidiaries		5,037				—

	Other assets		1,952				649

	Total assets		$	1,053,675			$	764,267

	Liabilities and Shareholders’ Equity
	Other liabilities		$	426			$	259

	Total liabilities		426				259

Shareholders’ equity		1,053,249				764,008

Total liabilities and shareholders’ equity		$	1,053,675			$	764,267

Condensed Statements of Cash Flows—Parent Company Only


		Years Ended December 31,
		2013				2012				2011
		(in thousands)
Operating Activities
Net income		$	60,016			$	46,143			$	48,037

Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed loss (earnings) of subsidiaries		119,533				2,020				(49,180		)

Stock-based compensation expense		2,844				1,622				1,635

Net changes in other assets and liabilities		6,830				(264		)		315

Net cash provided by operating activities		189,223				49,521				807

Investing Activities
Net cash paid in business combinations		(53,159		)		—				—

Proceeds from termination of trust subsidiaries		—				—				774

Net cash provided by (used in) investing activities		(53,159		)		—				774

Financing Activities
Preferred stock dividends		(32		)		—				—

Common stock dividends		(19,858		)		(38,824		)		(10,660		)
Repayment of long-term subordinated debt		(51,000		)		—				(25,774		)

Purchase and retirement of common stock		(429		)		—				(32		)

Proceeds from exercise of stock options		1,092				713				848

Downstream stock offering proceeds to the Bank		(100,000		)		—				(50,000		)

Excess tax benefit associated with share-based compensation		1,203				—				98

Net cash used in financing activities		(169,024		)		(38,111		)		(85,520		)
Increase (decrease) in cash and cash equivalents		(32,960		)		11,410				(83,939		)

Cash and cash equivalents at beginning of year		86,644				75,234				159,173

Cash and cash equivalents at end of year		$	53,684			$	86,644			$	75,234

Summary_Of_Quarterly_Financial

Summary Of Quarterly Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Summary of Quarterly Financial Information (Unaudited)	'
	Summary of Quarterly Financial Information (Unaudited)
	Quarterly financial information for the years ended December 31, 2013 and 2012 is summarized as follows:



		First			Second			Third			Fourth			Year Ended
		Quarter			Quarter			Quarter			Quarter			December 31,
		(in thousands, except per share amounts)
	2013
	Total interest income	$	54,761		$	82,268		$	81,599		$	78,307		$	296,935

	Total interest expense	1,279			2,279			1,184			1,098			5,840

	Net interest income	53,482			79,989			80,415			77,209			291,095

	Provision (recapture) for loan and lease losses	(1,000		)	2,000			4,260			(2,100		)	3,160

	Provision (recapture) for losses on covered loans	980			(1,712		)	(947		)	(1,582		)	(3,261		)

	Noninterest income	1,658			6,808			7,622			10,612			26,700

	Noninterest expense	38,049			64,504			64,714			63,619			230,886

	Income before income taxes	17,111			22,005			20,010			27,884			87,010

	Provision for income taxes	4,935			7,414			6,734			7,911			26,994

	Net income	$	12,176		$	14,591		$	13,276		$	19,973		$	60,016

	Per common share (1)
	Earnings (basic)	$	0.31		$	0.28		$	0.26		$	0.39		$	1.24

	Earnings (diluted)	$	0.31		$	0.28		$	0.25		$	0.38		$	1.21

	2012
	Total interest income	$	69,712		$	62,114		$	59,469		$	57,209		$	248,504

	Total interest expense	2,649			2,413			2,204			2,311			9,577

	Net interest income	67,063			59,701			57,265			54,898			238,927

	Provision for loan and lease losses	4,500			3,750			2,875			2,350			13,475

	Provision (recapture) for losses on covered loans	15,685			11,688			(3,992		)	2,511			25,892

	Noninterest income (loss)	9,574			11,828			(911		)	6,567			27,058

	Noninterest expense	44,352			39,825			40,936			37,800			162,913

	Income before income taxes	12,100			16,266			16,535			18,804			63,705

	Provision for income taxes	3,198			4,367			4,655			5,342			17,562

	Net income	$	8,902		$	11,899		$	11,880		$	13,462		$	46,143

	Per common share (1)
	Earnings (basic)	$	0.22		$	0.3		$	0.3		$	0.34		$	1.16

	Earnings (diluted)	$	0.22		$	0.3		$	0.3		$	0.34		$	1.16

	__________
	(1) Due to averaging of shares, quarterly earnings per share may not add up to the totals reported for the full year.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Line Items]	'
Cash and cash equivalents	'
	Cash and cash equivalents
	Cash and cash equivalents include cash and due from banks, and interest bearing balances due from correspondent banks and the Federal Reserve Bank. Cash and cash equivalents have a maturity of 90 days or less at the time of purchase.
Securities	'
	Securities
	Securities are classified based on management’s intention on the date of purchase. All securities are classified as available for sale and are presented at fair value. Unrealized gains or losses on securities available for sale are excluded from net income but are included as separate components of other comprehensive income, net of taxes. Purchase premiums or discounts on securities available for sale are amortized or accreted into income using the interest method over the terms of the individual securities. The Company performs a quarterly assessment to determine whether a decline in fair value below amortized cost is other-than-temporary. Amortized cost includes adjustments made to the cost of an investment for accretion, amortization, collection of cash and previous other-than temporary impairment recognized in earnings. Other-than-temporary impairment exists when it is probable that the Company will be unable to recover the entire amortized cost basis of the security.
	In performing the quarterly assessment for debt securities, management considers whether or not the Company expects to recover the entire amortized cost basis of the security. In addition, management also considers whether it is more likely than not that it will not have to sell the security before recovery of its cost basis. If the Company intends to sell a security or it is more likely than not it will be required to sell a security prior to recovery of its cost basis, the entire amount of impairment is recognized in earnings. If the Company does not intend to sell the security or it is not more likely than not it will be required to sell the security prior to recovery of its cost basis, the credit loss component of impairment is recognized in earnings and impairment associated with non-credit factors, such as market liquidity, is recognized in other comprehensive income net of tax. A credit loss is the difference between the cost basis of the security and the present value of cash flows expected to be collected, discounted at the security's effective interest rate at the date of acquisition. The cost basis of an other-than-temporarily impaired security is written down by the amount of impairment recognized in earnings. The new cost basis is not adjusted for subsequent recoveries in fair value. However, the difference between the new amortized cost basis and the cash flows expected to be collected is accreted as interest income. The total other-than-temporary impairment is presented in the consolidated statements of income with a reduction for the amount of other-than-temporary impairment that is recognized in other comprehensive income, if any.
	Realized gains or losses on sales of securities available for sale are recorded using the specific identification method.
Federal Home Loan Bank Stock	'
	Federal Home Loan Bank Stock
	The Company’s investment in Federal Home Loan Bank (“FHLB”) stock is carried at par value because the shares can only be redeemed with the FHLB at par. The Company is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages and FHLB advances. Stock redemptions are at the discretion of the FHLB or of the Company, upon five years’ prior notice for FHLB Class B stock or six months notice for FHLB Class A stock to the FHLB. FHLB stock is carried at cost and is subject to recoverability testing per the Financial Services—Depository and Lending topic of the FASB Accounting Standards Codification (“ASC”).
Loans	'
	Loans
	Loans are generally carried at the unpaid principal balance, net of premiums, unearned discounts and net deferred loan fees. Net deferred loan fees include deferred unamortized fees less direct incremental loan origination costs. Net deferred loan fees, premiums and unearned discounts on loans are recognized in interest income using either the interest method or straight-line method over the terms of the loans, adjusted for actual prepayments. Interest income is accrued as earned. Fees related to lending activities other than the origination or purchase of loans are recognized as noninterest income during the period the related services are performed.
	Nonaccrual loans—Loans are placed on nonaccrual status when a loan becomes contractually past due 90 days with respect to interest or principal unless the loan is both well secured and in the process of collection, or if full collection of interest or principal becomes uncertain. When a loan is placed on nonaccrual status, any accrued and unpaid interest receivable is reversed and the recognition of net deferred loan fees, premiums and unearned discounts ceases. Thereafter, interest collected on the loan is accounted for on the cash collection or cost recovery method until qualifying for return to accrual status. Generally, a loan may be returned to accrual status when the delinquent principal and interest are brought current in accordance with the terms of the loan agreement for a minimum period of six months and future payments are reasonably assured.
	Impaired loans—Loans are considered impaired when based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement or when a loan has been modified in a troubled debt restructuring. The assessment for impairment occurs when and while such loans are designated as classified per the Company’s internal risk rating system or when and while such loans are on nonaccrual. All nonaccrual loans greater than $500,000 are considered impaired and analyzed individually on a quarterly basis. Classified loans with an outstanding balance greater than $500,000 are evaluated for potential impairment on a quarterly basis.
	When a loan with unique risk characteristics has been identified as being impaired, the amount of impairment will be measured by the Company using discounted cash flows, except when it is determined that the primary (remaining) source of repayment for the loan is the operation or liquidation of the underlying collateral. In these cases, the current fair value of the collateral, reduced by costs to sell, will be used in place of discounted cash flows. As a final alternative, the observable market price of the debt may be used to assess impairment. Predominantly, the Company uses the fair value of collateral approach based upon a reliable valuation.
	When the measurement of the impaired loan is less than the recorded amount of the loan, an impairment is recognized by recording a charge-off to the allowance for loan and lease losses or by designating a specific reserve. The Company’s policy is to record cash receipts received on impaired loans first as reductions to principal and then to interest income.
	Restructured Loans—A loan is classified as a troubled debt restructuring when a borrower is experiencing financial difficulties that lead to a restructuring of the loan, and the Company grants concessions to the borrower in the restructuring that it would not otherwise consider. These concessions may include interest rate reductions, principal forgiveness, extension of maturity date and other actions intended to minimize potential losses. Generally, a nonaccrual loan that is restructured remains on nonaccrual status for a period of six months to demonstrate that the borrower can meet the restructured terms. If the borrower's performance under the new terms is not reasonably assured, the loan remains classified as a nonaccrual loan.
	Acquired Impaired Loans—Loans acquired with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are accounted for under ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality, formerly SOP 03-3 Accounting for Certain Loans or Debt Securities Acquired in a Transfer. In addition, because of the significant discounts associated with certain of the acquired loan portfolios, the Company elected to account for those certain acquired loans under ASC 310-30.
	In situations where such loans have similar risk characteristics, loans are aggregated into pools to estimate cash flows. A pool is accounted for as a single asset with a single interest rate, cumulative loss rate and cash flow expectation. Expected cash flows at the acquisition date in excess of the fair value of loans are considered to be accretable yield, which is recognized as interest income over the life of the loan pool using a level yield method if the timing and amount of the future cash flows of the pool is reasonably estimable. Subsequent to the acquisition date, any increases in cash flow over those expected at purchase date in excess of fair value are recorded as interest income prospectively. Any subsequent decreases in cash flow over those expected at purchase date due to credit deterioration are recognized by recording an allowance for losses on covered loans. Any disposals of loans, including sales of loans, payments in full or foreclosures result in the removal of the loan from the loan pool at the carrying amount.
	Covered Loans—The term covered loans refers to acquired loans that are covered under a loss-sharing agreement with the FDIC. At December 31, 2013, approximately 96% of covered loans were subject to an FDIC loss-sharing agreements and approximately 90% were accounted for as acquired, impaired loans. See Acquired Impaired Loans for further discussion.
	Unfunded loan commitments—Unfunded commitments are generally related to providing credit facilities to clients of the Bank and are not actively traded financial instruments. These unfunded commitments are disclosed as financial instruments with off-balance sheet risk in Note 16 in the Notes to Consolidated Financial Statements.
Allowance for Loan and Lease Losses	'
	Allowance for Loan and Lease Losses
	The Company accounts for the credit risk associated with lending activities through its allowance for loan and lease losses and provision for loan and lease losses. The provision is the expense recognized in the consolidated statements of income to adjust the allowance to the levels deemed appropriate by management, as determined through application of the Company’s allowance methodology procedures. The provision for loan and lease losses reflects management’s judgment of the adequacy of the allowance for loan and lease losses. Loan and lease losses are charged against the allowance when management believes the collectability of a loan balance is unlikely. Subsequent recoveries, if any, are credited to the allowance.
	The allowance for loan and lease losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, and estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.
	The allowance consists of general, specific, and unallocated components. The general component covers loans not specifically measured for impairment and is based on historical loss experience adjusted for qualitative factors. The specific component relates to loans that are impaired. For impaired loans an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. The unallocated allowance provides for other credit losses inherent in the Company’s loan portfolio that may not have been contemplated in the general and specific components of the allowance. This unallocated amount generally comprises less than 5% of the allowance. The unallocated amount is reviewed periodically based on trends in credit losses, the results of credit reviews and overall economic trends.
Allowance for Unfunded Commitments and Letters of Credit	'
	Allowance for Unfunded Commitments and Letters of Credit
	The allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb estimated probable losses related to these unfunded credit facilities. The determination of the adequacy of the allowance is based on periodic evaluations of the unfunded credit facilities including an assessment of the probability of commitment usage, credit risk factors for loans outstanding to these same customers, and the terms and expiration dates of the unfunded credit facilities. The allowance for unfunded commitments is included in other liabilities on the consolidated balance sheets, with changes to the balance charged against noninterest expense.
Premises and Equipment	'
	Premises and Equipment
	Land, buildings, leasehold improvements and equipment are stated at cost less accumulated depreciation and amortization. Gains or losses on dispositions are reflected in current operations. Expenditures for improvements and major renewals are capitalized, and ordinary maintenance, repairs and small purchases are charged to operating expenses. Depreciation and amortization are computed based on the straight-line method over the estimated useful lives of the various classes of assets. The ranges of useful lives for the principal classes of assets are as follows:


	Buildings and building improvements	5 to 39 years
	Leasehold improvements	Term of lease or useful life, whichever is shorter
	Furniture, fixtures and equipment	3 to 7 years
	Vehicles	5 years
	Computer software	3 to 5 years
Software	'
	Software
	Capitalized software is stated at cost, less accumulated amortization. Amortization is computed on a straight-line basis and charged to expense over the estimated useful life of the software which is generally three years. Capitalized software is included in Premises and equipment, net in the Consolidated Balance Sheets.
Other Real Estate OwnedbNoncovered	'
	Other Real Estate Owned
	Other real estate owned (“OREO”) is composed of real estate acquired in satisfaction of loans. Properties acquired by foreclosure or deed in lieu of foreclosure are transferred to OREO and are recorded at fair value less estimated costs to sell, at the date of transfer of the property. If the carrying value exceeds the fair value at the time of the transfer, the difference is charged to the allowance for loan and lease losses. The fair value of the OREO property is based upon current appraisal. Losses that result from the ongoing periodic valuation of these properties are charged to the net cost of operation of OREO in the period in which they are identified. Improvements to the OREO are capitalized and holding costs are charged to the net cost of operation of OREO as incurred.
Covered Assets and Related FDIC Loss Sharing Asset	'
	Covered OREO—Covered OREO includes acquired OREO that is covered under a loss-sharing agreement with the FDIC. These assets were recorded at their fair value on acquisition date. Covered OREO is reported in Other real estate owned in the Consolidated Balance Sheets. Covered OREO is reported exclusive of expected reimbursement cash flows from the FDIC. Upon transferring covered loan collateral to covered OREO status, valuation adjustments arising from acquisition accounting on the related loan are also transferred to covered OREO. Valuation adjustments arising from acquisition accounting on covered OREO result in a reduction of the covered OREO carrying amount and a corresponding increase in the expected FDIC reimbursement, with the estimated net loss to the Company, if any, charged against earnings.
	FDIC Loss-sharing Asset
	The acquisition date fair value of the reimbursement the Company expected to receive from the FDIC under loss-sharing agreements was recorded in the FDIC loss-sharing asset on the Consolidated Balance Sheet. Subsequent to initial recognition, the FDIC loss-sharing asset is reviewed quarterly and adjusted for any changes in expected cash flows. These adjustments are measured on the same basis as the related covered assets. Any decrease in expected cash flows for the covered assets due to an increase in expected credit losses will increase the FDIC loss-sharing asset and any increase in expected future cash flows for the covered assets due to a decrease in expected credit losses will decrease the FDIC loss-sharing asset. Changes in the estimated cash flows on covered assets that are immediately recognized in income generally result in a similar immediate adjustment to the loss-sharing asset while changes in expected cash flows on covered assets that are accounted for as an adjustment to yield generally result in adjustments to the amortization or accretion rate for the loss-sharing asset. Increases and decreases to the FDIC loss-sharing asset are recorded as adjustments to noninterest income.
Goodwill and Intangibles	'
	Goodwill and Intangibles
	Net assets of companies acquired in purchase transactions are recorded at fair value at the date of acquisition. Identified intangibles are amortized on an accelerated basis over the period benefited. Goodwill is not amortized but is reviewed for potential impairment during the third quarter on an annual basis or, more frequently, if events or circumstances indicate a potential impairment, at the reporting unit level. A reporting unit is an operating segment or one level below an operating segment for which discrete financial information is available and regularly reviewed by management. The Company consists of a single reporting unit. If the fair value of the reporting unit, including goodwill, is determined to be less than the carrying amount of the reporting unit, a further test is required to measure the amount of impairment. If an impairment loss exists, the carrying amount of goodwill is adjusted to a new cost basis. Subsequent reversal of a previously recognized goodwill impairment loss is prohibited.
	Intangible assets are evaluated for impairment if events and circumstances indicate a possible impairment. Such evaluation of other intangible assets is based on undiscounted cash flow projections. At December 31, 2013, intangible assets included on the consolidated balance sheets consist of a core deposit intangible amortized using an accelerated method with an original estimated life 10 years.
Income Taxes	'
	Income Taxes
	The provision for income taxes includes current and deferred income tax expense on net income adjusted for permanent and temporary differences such as interest income on state and municipal securities and affordable housing credits. Deferred tax assets and liabilities are recognized for the expected future tax consequences of existing temporary differences between the financial reporting and tax reporting basis of assets and liabilities using enacted tax laws and rates. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. On a quarterly basis, management evaluates deferred tax assets to determine if these tax benefits are expected to be realized in future periods. This determination is based on facts and circumstances, including the Company’s current and future tax outlook. To the extent a deferred tax asset is no longer considered “more likely than not” to be realized, a valuation allowance is established.
Earnings per Common Share	'
	Earnings per Common Share
	The Company's capital structure includes convertible preferred shares, common shares, restricted common shares, common share options, and warrants to purchase common shares. Restricted common shares participate in dividends declared on common shares at the same rate as common shares. Preferred shares participate in dividends declared on common shares on an "as if converted" basis. Accordingly, the Company calculates earnings per common share (“EPS”) using the two-class method under the Earnings per Share topic of the FASB ASC. The two-class method is an earnings allocation formula that treats a participating security as having rights to earnings that otherwise would have been available to common shareholders but does not require the presentation of basic and diluted EPS for securities other than common shares.
	Under the two-class method, basic EPS is computed by dividing earnings allocated to common shareholders by the weighted average number of common shares outstanding for the period. Earnings allocated to common shareholders represents net income reduced by earnings allocated to participating securities. Common shares outstanding include common stock and vested restricted stock awards. Diluted EPS is computed in the same manner as basic earnings per share except that the denominator is increased to include the number of additional common shares that would have been outstanding if certain shares issuable upon exercise of options and warrants were included unless those additional shares would have been anti-dilutive. For the diluted EPS computation, the treasury stock method is applied and compared to the two-class method and whichever method results in a more dilutive impact is utilized to calculate diluted EPS.
Advertising	'
	Advertising
	Advertising costs are generally expensed as incurred.
Share-Based Payment	'
	Share-Based Payment
	The Company accounts for stock options and stock awards in accordance with the Compensation—Stock Compensation topic of the FASB ASC. Authoritative guidance requires the Company to measure the cost of employee services received in exchange for an award of equity instruments, such as stock options or stock awards, based on the fair value of the award on the grant date. This cost must be recognized in the consolidated statements of income over the vesting period of the award.
	The Company issues restricted stock awards which generally vest over a four- or five-year period during which time the holder receives dividends and has full voting rights. Restricted stock is valued at the closing price of the Company’s stock on the date of an award.
Derivatives and Hedging Activities	'
	Derivatives and Hedging Activities
	In accordance with the Derivatives and Hedging topic of the FASB ASC, the Company recognizes derivatives as assets or liabilities on the consolidated balance sheets at their fair value. The treatment of changes in the fair value of derivatives depends on the character of the transaction.
	The Company enters into derivative contracts to add stability to interest income and to manage its exposure to changes in interest rates. On the date the Company enters into a derivative contract, the derivative instrument is designated as: (1) a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment (a “fair value” hedge); (2) a hedge of the variability in expected future cash flows associated with an existing recognized asset or liability or a probable forecasted transaction (a “cash flow” hedge); or (3) held for other economic purposes (an “economic” hedge) and not formally designated as part of qualifying hedging relationships under authoritative guidance.
	In a fair value hedge, changes in the fair value of the hedging derivative are recognized in earnings and offset by recognizing changes in the fair value of the hedged item attributable to the risk being hedged. To the extent that the hedge is ineffective, the changes in fair value will not offset and the difference is reflected in earnings.
	In a cash flow hedge, the effective portion of the change in the fair value of the hedging derivative is recorded in accumulated other comprehensive income and is subsequently reclassified into earnings during the same period in which the hedged item affects earnings. The change in fair value of any ineffective portion of the hedging derivative is recognized immediately in earnings. When a cash flow hedge is discontinued, the net derivative gain or loss continues to be reported in accumulated other comprehensive income unless it is probable that the forecasted transactions will not occur by the end of the originally specified time period. The net derivative gain or loss from a discontinued cash flow hedge is reclassified into earnings during the originally specified time period in which the forecasted transactions were to occur.
	The Company formally documents the relationship between the hedging instruments and hedged items, as well as its risk management objective and strategy before initiating a hedge. To qualify for hedge accounting, the derivatives and related hedged items must be designated as a hedge. For hedging relationships in which effectiveness is measured, the correlations between the hedging instruments and hedged items are assessed at inception of the hedge and on an ongoing basis, which includes determining whether the hedge relationship is expected to be highly effective in offsetting changes in fair value or cash flows of hedged items.
	Derivatives used for other economic purposes are used as economic hedges in which the Company has not attempted to achieve the highly effective hedge accounting standard under authoritative guidance. The changes in fair value of these instruments are recognized immediately in earnings.
Covered Loans [Member]	'
Accounting Policies [Line Items]	'
Allowance for Loan and Lease Losses	'
	Allowance for Loan Losses on Covered Loans
	The Company updates its cash flow projections for covered loans accounted for under ASC 310-30 on a quarterly basis. Assumptions utilized in this process include projections related to probability of default, loss severity, prepayment and recovery lag. Projections related to probability of default and prepayment are calculated utilizing a loan migration analysis. The loan migration analysis is a matrix of probability that is used to estimate the probability of a loan pool transitioning into a particular delinquency state given its delinquency state at the remeasurement date. Loss severity factors are based upon either actual charge-off data within the loan pools or industry averages and recovery lags are based upon the collateral within the loan pools.
	Any decreases in expected cash flows after the acquisition date and subsequent measurement periods are recognized by recording a provision for loan losses. See Acquired Impaired Loans for further discussion.

Business_Combinations_Tables

Business Combinations (Tables)	0 Months Ended						12 Months Ended
	Apr. 02, 2013						Dec. 31, 2012			Dec. 31, 2012			Dec. 31, 2012
							Bank of Whitman [Member]			First Heritage Bank [Member]			Summit Bank [Member]
Business Acquisition [Line Items]	'						'			'			'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	'						'			'			'
	The table below summarizes the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:						The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:			The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:			The table below displays the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:


		April 1, 2013						5-Aug-11
		(in thousands)						(in thousands)			May 27, 2011			May 20, 2011
							Assets				(in thousands)			(in thousands)
	Purchase price as of April 1, 2013	$	540,791				Cash and due from banks	$	52,072	Assets			Assets
										Cash and due from banks	$	4,688	Cash and due from banks	$	1,837
	Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value:						Investment securities	16,298
	Cash and cash equivalents	$	110,440							Interest-earning deposits with banks	6,689		Interest-earning deposits with banks and federal funds sold	14,198
							Federal Reserve Bank and Federal Home Loan Bank stock	3,977
	Investment securities	730,842								Investment securities	5,303		Investment securities	871
							Acquired loans	200,041
	Federal Home Loan Bank stock	11,824								Federal Home Loan Bank stock	477		Federal Home Loan Bank stock	406
							Accrued interest receivable	1,975
	Acquired loans	1,407,798								Acquired loans	81,488		Acquired loans	69,783
							Premises and equipment	86
	Premises and equipment	35,884								Accrued interest receivable	476		Accrued interest receivable	429
							FDIC receivable	156,710
	Other real estate owned	14,708								Premises and equipment	5,339		Premises and equipment	42
							Core deposit intangible	3,943
	Core deposit intangible	15,257								FDIC receivable	4,751		FDIC receivable	6,984
							Other assets	2,447
	Other assets	75,820								Other real estate owned covered by loss sharing	8,225		Other real estate owned covered by loss sharing	2,162
							Total assets acquired	$	437,549
	Deposits	(1,883,407		)						Goodwill	4,023		Goodwill	1,892
	Federal Home Loan Bank advances	(128,885		)			Liabilities
	Junior subordinated debentures	(51,000		)			Deposits	$	401,127	Core deposit intangible	1,337		Core deposit intangible	509
	Other liabilities	(26,888		)
	Total fair value of identifiable net assets	312,393					Federal Home Loan Bank advances	32,949		FDIC indemnification asset	38,531		FDIC indemnification asset	30,203

	Goodwill	$	228,398				Accrued interest payable	213		Other assets	3,657		Other assets	1,813

							Deferred tax liability	1,034		Total assets acquired	$	164,984	Total assets acquired	$	131,129

							Other liabilities	396		Liabilities			Liabilities
										Deposits	$	159,525	Deposits	$	123,279
							Total liabilities assumed	435,719
										Federal Home Loan Bank advances	5,003		Federal Home Loan Bank advances	7,772
							Net assets acquired (after tax gain)	$	1,830
										Accrued interest payable	421		Accrued interest payable	71

										Other liabilities	35		Other liabilities	7

										Total liabilities assumed	$	164,984	Total liabilities assumed	$	131,129

Business Acquisition, Pro Forma Information [Table Text Block]	'						'			'			'
	The following table presents certain unaudited pro forma information for illustrative purposes only, for the years ended December 31, 2013 and 2012 as if West Coast had been acquired on January 1, 2012. The unaudited estimated pro forma information combines the historical results of West Coast with the Company's consolidated historical results and includes certain adjustments reflecting the estimated impact of certain fair value adjustments for the respective periods. The pro forma information is not indicative of what would have occurred had the acquisition occurred on January 1, 2012. In particular, no adjustments have been made to eliminate the impact of other-than-temporary impairment losses and losses recognized on the sale of securities that may not have been necessary had the investments securities been recorded at fair value as of January 1, 2012. The unaudited pro forma information does not consider any changes to the provision for credit losses resulting from recording loan assets at fair value. Additionally, Columbia expects to achieve further operating cost savings and other business synergies, including revenue growth, as a result of the acquisition which are not reflected in the pro forma amounts that follow. As a result, actual amounts will differ from the unaudited pro forma information presented.


		Unaudited Pro Forma
		Years Ended December 31,
		2013			2012
		(in thousands)
	Total revenues (net interest income plus noninterest income)	$	337,712		$	420,167

	Net income	$	76,496		$	91,261

	Earnings per share - basic	$	1.5		$	1.79

	Earnings per share - diluted	$	1.46		$	1.74

Securities_Tables

Securities (Tables)	12 Months Ended
	Dec. 31, 2013
Available-for-sale Securities [Abstract]	'
Securities Available for Sale	'
	The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale:


		Amortized		Gross			Gross			Fair Value
		Cost		Unrealized			Unrealized
				Gains			Losses
	December 31, 2013	(in thousands)
	U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	961,442	$	10,640		$	(23,674	)	$	948,408

	State and municipal securities	357,013		11,450			(3,993		)	364,470

	U.S. government agency and government-sponsored enterprise securities	335,671		434			(10,066		)	326,039

	U.S. government securities	21,081		—			(967		)	20,114

	Other securities	5,284		27			(231		)	5,080

	Total	$	1,680,491	$	22,551		$	(38,931	)	$	1,664,111

	December 31, 2012
	U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	561,076	$	16,719		$	(5,426	)	$	572,369

	State and municipal securities	265,070		20,893			(388		)	285,575

	U.S. government agency and government-sponsored enterprise securities	120,085		851			(435		)	120,501

	U.S. government securities	19,804		39			(15		)	19,828

	Other securities	3,324		104			(36		)	3,392

	Total	$	969,359	$	38,606		$	(6,300	)	$	1,001,665

Schedule of Contractual Maturities of Investment Securities Available for Sale	'
	The following table summarizes the amortized cost and fair value of securities available for sale by contractual maturity groups:


		December 31, 2013
		Amortized Cost		Fair Value
		(in thousands)
	Due within one year	$	14,079	$	14,239

	Due after one year through five years	303,875		302,641

	Due after five years through ten years	487,643		480,244

	Due after ten years	869,610		861,907

	Other securities with no stated maturity	$	5,284	$	5,080

	Total investment securities available-for-sale	$	1,680,491	$	1,664,111

Carrying Value of Securities Pledged As Collateral	'
	The following table summarizes, as of December 31, 2013 and 2012, the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law:


		December 31, 2013		December 31, 2012
		(in thousands)
	Washington and Oregon State to secure public deposits	$	277,012	$	281,006

	Federal Reserve Bank to secure borrowings	42,694		47,634

	Other securities pledged	43,081		46,090

	Total securities pledged as collateral	$	362,787	$	374,730

Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses	'
	The following tables show the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2013 and 2012:


		Less than 12 Months					12 Months or More						Total
		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Losses			Value			Losses			Value		Losses
	December 31, 2013	(in thousands)
	U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	492,921	$	(10,991	)	$	121,303		$	(12,684	)	$	614,224	(23,675		)

	State and municipal securities	112,400		(3,069		)	13,815			(923		)	126,215		(3,992		)

	U.S. government agency and government-sponsored enterprise securities	260,001		(8,063		)	28,447			(2,003		)	288,448		(10,066		)

	U.S. government securities	20,114		(967		)	—			—			20,114		(967		)

	Other securities	2,257		(58		)	2,783			(173		)	5,040		(231		)

	Total	$	887,693	$	(23,148	)	$	166,348		$	(15,783	)	$	1,054,041	$	(38,931	)

	December 31, 2012
	U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	167,739	$	(5,090	)	$	12,204		$	(336	)	$	179,943	$	(5,426	)

	State and municipal securities	20,413		(383		)	210			(5		)	20,623		(388		)

	U.S. government agency and government-sponsored enterprise securities	56,600		(435		)	—			—			56,600		(435		)

	U.S. government securities	9,914		(15		)	—			—			9,914		(15		)

	Other securities	—		—			964			(36		)	964		(36		)

	Total	$	254,666	$	(5,923	)	$	13,378		$	(377	)	$	268,044	$	(6,300	)

Noncovered_Loans_Tables

Noncovered Loans (Tables)	12 Months Ended
	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]	'
Analysis of Loan Portfolio by Major Types of Loans	'
	The following is an analysis of our covered loans, net of related allowance for losses as of December 31, 2013 and 2012:


			December 31, 2013				December 31, 2012
	Covered loans:		(dollars in thousands)
	Commercial business		$	72,870			$	125,373

	Real estate:
	One-to-four family residential		41,642				57,150

	Commercial and multifamily residential		170,879				233,106

	Total real estate		212,521				290,256

	Real estate construction:
	One-to-four family residential		14,781				25,398

	Commercial and multifamily residential		6,869				15,251

	Total real estate construction		21,650				40,649

	Consumer		34,101				44,516

	Subtotal of covered loans		341,142				500,794

	Less:
	Valuation discount resulting from acquisition accounting		43,297				79,401

	Allowance for loan losses		20,174				30,056

	Covered loans, net of valuation discounts and allowance for loan losses		$	277,671			$	391,337

Noncovered Loans [Member]	'
Financing Receivable, Recorded Investment [Line Items]	'
Analysis of Loan Portfolio by Major Types of Loans	'
	The following is an analysis of the noncovered loan portfolio by major types of loans (net of unearned income):


			December 31,				December 31,
			2013				2012
			(in thousands)
	Noncovered loans:
	Commercial business		$	1,561,782			$	1,155,158

	Real estate:
	One-to-four family residential		108,317				43,922

	Commercial and multifamily residential		2,080,075				1,061,201

	Total real estate		2,188,392				1,105,123

	Real estate construction:
	One-to-four family residential		54,155				50,602

	Commercial and multifamily residential		126,390				65,101

	Total real estate construction		180,545				115,703

	Consumer		357,014				157,493

	Less: Net unearned income		(68,282		)		(7,767		)
	Total noncovered loans, net of unearned income		4,219,451				2,525,710

	Less: Allowance for loan and lease losses		(52,280		)		(52,244		)
	Total noncovered loans, net		$	4,167,171			$	2,473,466

	Loans held for sale		$	735			$	2,563

Analysis of Nonaccrual Loans	'
	The following is an analysis of noncovered, nonaccrual loans as of December 31, 2013 and 2012:



			December 31, 2013								December 31, 2012
			Recorded				Unpaid Principal				Recorded			Unpaid Principal
			Investment				Balance				Investment			Balance
			Nonaccrual				Nonaccrual				Nonaccrual			Nonaccrual
			Loans				Loans				Loans			Loans
	Noncovered loans:		(in thousands)
	Commercial business:
	Secured		$	12,433			$	19,186			$	9,037		$	17,821

	Unsecured		176				202				262			262

	Real estate:
	One-to-four family residential		2,667				4,678				2,349			2,672

	Commercial and multifamily residential:
	Commercial land		442				783				4,076			7,491

	Income property		4,267				5,383				8,520			10,815

	Owner occupied		6,334				7,486				6,608			7,741

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		3,246				6,601				3,084			6,704

	Residential construction		459				1,928				1,816			2,431

	Consumer		3,991				6,187				1,643			1,940

	Total		$	34,015			$	52,434			$	37,395		$	57,877

Analysis of the Aged Loan Portfolio	'
	The following is an aging of the recorded investment of the noncovered loan portfolio as of December 31, 2013 and 2012:



			Current				30 - 59				60 - 89			Total				Nonaccrual				Total Loans
			Loans				Days				Days			Past Due				Loans
							Past Due				Past Due
	December 31, 2013		(in thousands)
	Noncovered loans:
	Commercial business:
	Secured		$	1,457,820			$	12,713			$	681		$	13,394			$	12,433			$	1,483,647

	Unsecured		72,255				156				17			173				176				72,604

	Real estate:
	One-to-four family residential		100,591				1,993				641			2,634				2,667				105,892

	Commercial and multifamily residential:
	Commercial land		142,034				—				358			358				442				142,834

	Income property		1,138,732				144				3,289			3,433				4,267				1,146,432

	Owner occupied		749,561				4,714				—			4,714				6,334				760,609

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		8,225				199				—			199				3,246				11,670

	Residential construction		41,533				—				—			—				459				41,992

	Commercial and multifamily residential:
	Income property		86,521				—				—			—				—				86,521

	Owner occupied		38,916				—				—			—				—				38,916

	Consumer		322,685				835				823			1,658				3,991				328,334

	Total		$	4,158,873			$	20,754			$	5,809		$	26,563			$	34,015			$	4,219,451

			Current				30 - 59				60 - 89			Total				Nonaccrual				Total Loans
			Loans				Days				Days			Past Due				Loans
							Past Due				Past Due
	December 31, 2012		(in thousands)
	Noncovered loans:
	Commercial business:
	Secured		$	1,091,770			$	4,259			$	1,485		$	5,744			$	9,037			$	1,106,551

	Unsecured		44,817				252				12			264				262				45,343

	Real estate:
	One-to-four family residential		41,508				193				142			335				2,349				44,192

	Commercial and multifamily residential:
	Commercial land		42,818				311				122			433				4,076				47,327

	Income property		603,339				2,726				227			2,953				8,520				614,812

	Owner occupied		387,525				1,040				—			1,040				6,608				395,173

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		15,412				—				—			—				3,084				18,496

Residential construction		29,848				—				—			—				1,816				31,664

Commercial and multifamily residential:
Income property		28,342				—				—			—				—				28,342

Owner occupied		36,211				—				—			—				—				36,211

Consumer		155,207				387				362			749				1,643				157,599

Total		$	2,476,797			$	9,168			$	2,350		$	11,518			$	37,395			$	2,525,710

Impaired Financing Receivables	'
	The following is an analysis of impaired loans (see Note 1) as of December 31, 2013 and 2012:


			Recorded Investment				Recorded Investment				Impaired Loans With											Impaired Loans Without
			of Loans				of Loans				Recorded Allowance											Recorded Allowance
			Collectively Measured				Individually
			for Contingency				Measured for
			Provision				Specific
							Impairment				Recorded			Unpaid				Related				Recorded				Unpaid
											Investment			Principal				Allowance				Investment				Principal
														Balance												Balance
	December 31, 2013		(in thousands)
	Noncovered loans:
	Commercial business:
	Secured		$	1,478,560			$	5,087			$	2,866		$	2,885			$	343			$	2,221			$	2,560

	Unsecured		72,569				35				35			35				35				—				—

	Real estate:
	One-to-four family residential		104,272				1,620				442			479				138				1,178				2,119

	Commercial and multifamily residential:
	Commercial land		142,719				115				—			—				—				115				398

	Income property		1,140,019				6,413				918			933				26				5,495				7,885

	Owner occupied		749,601				11,008				3,802			3,817				1,073				7,206				10,464

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		9,726				1,944				113			113				71				1,831				2,587

	Residential construction		41,992				—				—			—				—				—				—

	Commercial and multifamily residential:
	Income property		86,521				—				—			—				—				—				—

	Owner occupied		38,916				—				—			—				—				—				—

	Consumer		328,167				167				23			27				4				144				210

	Total		$	4,193,062			$	26,389			$	8,199		$	8,289			$	1,690			$	18,190			$	26,223




			Recorded Investment				Recorded Investment				Impaired Loans With											Impaired Loans Without
			of Loans				of Loans				Recorded Allowance											Recorded Allowance
			Collectively Measured				Individually
			for Contingency				Measured for
			Provision				Specific
							Impairment				Recorded			Unpaid				Related				Recorded				Unpaid
											Investment			Principal				Allowance				Investment				Principal
														Balance												Balance
	December 31, 2012		(in thousands)
	Noncovered loans:
	Commercial business:
	Secured		$	1,101,689			$	4,862			$	690		$	1,994			$	113			$	4,172			$	6,769

	Unsecured		45,251				92				92			92				92				—				—

	Real estate:
	One-to-four family residential		42,103				2,089				345			364				112				1,744				1,902

Commercial and multifamily residential:
Commercial land		44,672				2,655				—			—				—				2,655				5,727

Income property		606,656				8,156				2,670			2,727				1,040				5,486				7,860

Owner occupied		383,269				11,904				608			610				38				11,296				14,642

Real estate construction:
One-to-four family residential
Land and acquisition		15,677				2,819				—			—				—				2,819				4,813

Residential construction		29,707				1,957				—			—				—				1,957				2,570

Commercial and multifamily residential:
Income property		28,342				—				—			—				—				—				—

Owner occupied		36,211				—				—			—				—				—				—

Consumer		157,472				127				—			—				—				127				127

Total		$	2,491,049			$	34,661			$	4,405		$	5,787			$	1,395			$	30,256			$	44,410


The following table provides additional information on impaired loans for the years ended December 31, 2013, 2012 and 2011:


		Year ended December 31, 2013								Year Ended December 31, 2012							Year ended December 31, 2011
		Average Recorded				Interest Recognized				Average Recorded			Interest Recognized				Average Recorded				Interest Recognized
		Investment				on				Investment			on				Investment				on
		Impaired Loans				Impaired Loans				Impaired Loans			Impaired Loans				Impaired Loans				Impaired Loans
Noncovered loans:		(in thousands)
Commercial business
Secured		$	5,636			$	19			$	8,978		$	9			$	15,578			$	511

Unsecured		61				3				113			6				138				—

Real estate:
One-to-four family residential		1,665				63				2,130			—				2,494				—

Commercial & multifamily residential
Commercial land		1,691				—				3,124			—				4,263				—

Income property		8,910				238				7,895			77				8,881				59

Owner occupied		10,779				971				13,315			1,004				15,254				18

Real estate construction:
One-to-four family residential
Land and acquisition		2,624				6				4,465			—				8,972				116

Residential construction		420				—				3,223			11				4,535				—

Commercial & multifamily residential
Income property		—				—				3,169			—				7,065				—

Consumer		253				6				1,112			7				3,880				15

Total		$	32,039			$	1,306			$	47,524		$	1,114			$	71,060			$	719

Analysis of loans classified as Troubled Debt Restructurings (bTDRb)	'
	The following is an analysis of loans classified as Troubled Debt Restructurings ("TDR") for the years ended December 31, 2013, 2012 and 2011:


			Year ended December 31, 2013										Year Ended December 31, 2012											Year ended December 31, 2011
			Number of TDR Modifications			Pre-Modification				Post-Modification			Number of TDR Modifications			Pre-Modification				Post-Modification				Number of TDR Modifications			Pre-Modification		Post-Modification
						Outstanding				Outstanding						Outstanding				Outstanding							Outstanding		Outstanding
						Recorded				Recorded						Recorded				Recorded							Recorded		Recorded
						Investment				Investment						Investment				Investment							Investment		Investment
	Noncovered loans:		(dollars in thousands)
	Commercial business:
	Secured		2			$	190			$	190		1			$	195			$	194			6			$	659	$	659

	Real estate:
	One-to-four family residential		1			113				113			—			—				—				1			369		369

	Commercial and multifamily residential:
	Commercial land		1			137				137			—			—				—				—			—		—

	Income property		4			1,186				1,186			1			4,279				2,650				2			1,280		1,280

	Owner occupied		1			172				172			—			—				—				—			—		—

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		1			117				117			—			—				—				—			—		—

	Residential construction		—			—				—			—			—				—				1			36		36

	Consumer		2			53				53			—			—				—				—			—		—

	Total		12			$	1,968			$	1,968		2			$	4,474			$	2,844			10			$	2,344	$	2,344

Allowance_for_Noncovered_Loan_1

Allowance for Noncovered Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Tables)	12 Months Ended
	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]	'
Changes in the Allowance for Unfunded Commitments and Letters of Credit	'
	Changes in the allowance for unfunded commitments and letters of credit, a component of other liabilities in the consolidated balance sheet, are summarized as follows:


			Years Ended December 31,
			2013			2012				2011
			(in thousands)
	Beginning balance		$	1,915		$	1,535			$	1,165

	Net changes in the allowance for unfunded commitments and letters of credit		590			380				370

	Ending balance		$	2,505		$	1,915			$	1,535

Financing Receivable Credit Quality Indicators [Table Text Block]	'
	The following is an analysis of the credit quality of our covered loan portfolio as of December 31, 2013 and 2012:


			Pass			Special Mention				Substandard			Doubtful				Loss			Total
	December 31, 2013		(in thousands)
	Covered loans:
	Commercial business:
	Secured		$	48,510		$	2,849			$	18,291		$	—			$	—		$	69,650

	Unsecured		2,732			396				92			—				—			3,220

	Real estate:
	One-to-four family residential		35,066			1,842				4,734			—				—			41,642

	Commercial and multifamily residential:
	Commercial land		10,778			198				7,589			—				—			18,565

	Income property		55,985			3,950				10,657			—				—			70,592

	Owner occupied		67,653			111				13,958			—				—			81,722

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		4,674			2,739				1,936			—				—			9,349

	Residential construction		3,008			—				2,424			—				—			5,432

	Commercial and multifamily residential:
	Income property		3,806			—				1,709			—				—			5,515

	Owner occupied		1,074			—				280			—				—			1,354

	Consumer		30,722			33				3,319			27				—			34,101

	Total		$	264,008		$	12,118			$	64,989		$	27			$	—		341,142

	Less:
	Valuation discount resulting from acquisition accounting																			43,297

	Allowance for loan losses																			20,174

	Covered loans, net																			$	277,671



			Pass			Special Mention				Substandard			Doubtful				Loss			Total
	December 31, 2012		(in thousands)
	Covered loans:
	Commercial business:
	Secured		$	71,621		$	1,823			$	45,150		$	—			$	—		$	118,594

	Unsecured		4,988			—				1,791			—				—			6,779

	Real estate:
	One-to-four family residential		44,782			1,344				11,024			—				—			57,150

	Commercial and multifamily residential:
	Commercial land		16,336			—				10,292			—				—			26,628

	Income property		81,205			864				23,315			—				—			105,384

	Owner occupied		82,222			3,318				15,554			—				—			101,094

Real estate construction:
One-to-four family residential:
Land and acquisition		4,817			3,273				5,743			—				—			13,833

Residential construction		6,050			—				5,515			—				—			11,565

Commercial and multifamily residential:
Income property		4,419			—				7,901			—				—			12,320

Owner occupied		1,107			—				1,824			—				—			2,931

Consumer		38,973			381				5,162			—				—			44,516

Total		$	356,520		$	11,003			$	133,271		$	—			$	—		500,794

Less:
Valuation discount resulting from acquisition accounting																			79,401

Allowance for loan losses																			30,056

Covered loans, net																			$	391,337

Noncovered Loans [Member]	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'
Changes in the Allowance for Loan and Lease Losses	'
	The following tables show a detailed analysis of the allowance for loan and lease losses for noncovered loans for the years ended December 31, 2013, 2012 and 2011:


			Beginning			Charge-offs				Recoveries			Provision (Recovery)				Ending			Specific			General
			Balance														Balance			Reserve			Allocation
	Year ended December 31, 2013		(in thousands)
	Noncovered loans:
	Commercial business:
	Secured		$	27,270		$	(4,148	)		$	1,512		$	6,393			$	31,027		$	343		$	30,684

	Unsecured		753			(794		)		932			(195		)		696			35			661

	Real estate:
	One-to-four family residential		694			(228		)		270			516				1,252			138			1,114

	Commercial and multifamily residential:
	Commercial land		460			(20		)		169			(120		)		489			—			489

	Income property		11,033			(1,405		)		489			(883		)		9,234			26			9,208

	Owner occupied		6,362			(1,118		)		375			(2,014		)		3,605			1,073			2,532

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		1,171			(32		)		2,553			(3,082		)		610			71			539

	Residential construction		635			(101		)		112			176				822			—			822

	Commercial and multifamily residential:
	Income property		316			—				—			(31		)		285			—			285

	Owner occupied		102			—				—			(44		)		58			—			58

	Consumer		2,437			(2,242		)		552			1,800				2,547			4			2,543

	Unallocated		1,011			—				—			644				1,655			—			1,655

	Total		$	52,244		$	(10,088	)		$	6,964		$	3,160			$	52,280		$	1,690		$	50,590



			Beginning			Charge-offs				Recoveries			Provision (Recovery)				Ending			Specific			General
			Balance														Balance			Reserve			Allocation
	Year Ended December 31, 2012		(in thousands)
	Noncovered loans:
	Commercial business:
	Secured		$	24,745		$	(10,029	)		$	1,354		$	11,200			$	27,270		$	113		$	27,157

	Unsecured		689			(144		)		194			14				753			92			661

	Real estate:
	One-to-four family residential		654			(549		)		285			304				694			112			582

	Commercial and multifamily residential:
	Commercial land		488			(526		)		63			435				460			—			460

	Income property		9,551			(4,030		)		905			4,607				11,033			1,040			9,993

	Owner occupied		9,606			(918		)		631			(2,957		)		6,362			38			6,324

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		2,331			(989		)		1,059			(1,230		)		1,171			—			1,171

Residential construction		864			(617		)		429			(41		)		635			—			635

Commercial and multifamily residential:
Income property		665			(93		)		66			(322		)		316			—			316

Owner occupied		35			—				—			67				102			—			102

Consumer		2,719			(2,534		)		1,171			1,081				2,437			—			2,437

Unallocated		694			—				—			317				1,011			—			1,011

Total		$	53,041		$	(20,429	)		$	6,157		$	13,475			$	52,244		$	1,395		$	50,849



		Beginning			Charge-offs				Recoveries			Provision (Recovery)				Ending			Specific			General
		Balance														Balance			Reserve			Allocation
Year ended December 31, 2011		(in thousands)
Noncovered loans:
Commercial business:
Secured		$	21,811		$	(7,270	)		$	1,154		$	9,050			$	24,745		$	954		$	23,791

Unsecured		738			(639		)		1,444			(854		)		689			97			592

Real estate:
One-to-four family residential		1,100			(717		)		80			191				654			96			558

Commercial and multifamily residential:
Commercial land		634			(660		)		12			502				488			—			488

Income property		15,210			(1,407		)		414			(4,666		)		9,551			63			9,488

Owner occupied		9,692			(1,620		)		33			1,501				9,606			185			9,421

Real estate construction:
One-to-four family residential:
Land and acquisition		3,769			(1,419		)		1,978			(1,997		)		2,331			—			2,331

Residential construction		2,292			(1,068		)		113			(473		)		864			59			805

Commercial and multifamily residential:
Income property		274			(2,213		)		—			2,604				665			—			665

Owner occupied		70			—				—			(35		)		35			—			35

Consumer		2,120			(3,918		)		351			4,166				2,719			30			2,689

Unallocated		3,283			—				—			(2,589		)		694			—			694

Total		$	60,993		$	(20,931	)		$	5,579		$	7,400			$	53,041		$	1,484		$	51,557

Financing Receivable Credit Quality Indicators [Table Text Block]	'
	The following is an analysis of the credit quality of our noncovered loan portfolio as of December 31, 2013 and 2012:



			Pass			Special Mention				Substandard			Doubtful				Loss			Total
	December 31, 2013		(in thousands)
	Noncovered loans:
	Commercial business:
	Secured		$	1,372,038		$	43,309			$	68,300		$	—			$	—		$	1,483,647

	Unsecured		72,226			199				179			—				—			72,604

	Real estate:
	One-to-four family residential		98,626			1,567				5,699			—				—			105,892

	Commercial and multifamily residential:
	Commercial land		137,850			—				4,984			—				—			142,834

	Income property		1,108,033			5,473				32,926			—				—			1,146,432

	Owner occupied		748,725			—				11,884			—				—			760,609

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		7,526			—				4,144			—				—			11,670

	Residential construction		36,270			2,352				3,370			—				—			41,992

	Commercial and multifamily residential:
	Income property		86,206			—				315			—				—			86,521

	Owner occupied		38,916			—				—			—				—			38,916

	Consumer		321,348			331				6,188			467				—			328,334

	Total		$	4,027,764		$	53,231			$	137,989		$	467			$	—		4,219,451

	Less:
	Allowance for loan losses																			52,280

	Noncovered loans, net																			$	4,167,171



			Pass			Special Mention				Substandard			Doubtful				Loss			Total
	December 31, 2012		(in thousands)
	Noncovered loans:
	Commercial business:
	Secured		$	1,011,722		$	29,222			$	65,607		$	—			$	—		$	1,106,551

	Unsecured		44,788			26				529			—				—			45,343

	Real estate:
	One-to-four family residential		40,346			406				3,440			—				—			44,192

	Commercial and multifamily residential:
	Commercial land		43,401			—				3,926			—				—			47,327

	Income property		581,671			3,688				29,453			—				—			614,812

	Owner occupied		357,063			1,848				36,262			—				—			395,173

	Real estate construction:
One-to-four family residential:
Land and acquisition		12,741			1,351				4,404			—				—			18,496

Residential construction		28,705			1,142				1,817			—				—			31,664

Commercial and multifamily residential:
Income property		28,342			—				—			—				—			28,342

Owner occupied		36,211			—				—			—				—			36,211

Consumer		151,049			75				6,475			—				—			157,599

Total		$	2,336,039		$	37,758			$	151,913		$	—			$	—		2,525,710

Less:
Allowance for loan losses																			52,244

Noncovered loans, net																			$	2,473,466

Noncovered_Other_Real_Estate_O1

Noncovered Other Real Estate Owned (Tables)	12 Months Ended
	Dec. 31, 2013
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]	'
Summary of Noncovered Other Real Estate Owned	'
	The following table sets forth activity in noncovered OREO for the period:


		December 31, 2013			December 31, 2012
		(in thousands)
	Noncovered OREO:
	Balance, beginning of period	$	10,676		$	22,893

	Established through acquisitions	14,708			—

	Transfers in, net of write-downs ($90 and $205, respectively)	9,273			7,461

	Additions to OREO	3,577			11

	Additional OREO write-downs	(1,753		)	(4,816		)
	Proceeds from sale of OREO property	(13,903		)	(15,689		)
	Net gain on sale of OREO	1,256			816

	Total noncovered OREO, end of period	$	23,834		$	10,676

Covered_Assets_and_FDIC_Losssh1

Covered Assets and FDIC Loss-sharing Asset (Tables)	12 Months Ended
	Dec. 31, 2013
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'
Analysis of Loan Portfolio by Major Types of Loans	'
	The following is an analysis of our covered loans, net of related allowance for losses as of December 31, 2013 and 2012:


		December 31, 2013			December 31, 2012
	Covered loans:	(dollars in thousands)
	Commercial business	$	72,870		$	125,373

	Real estate:
	One-to-four family residential	41,642			57,150

	Commercial and multifamily residential	170,879			233,106

	Total real estate	212,521			290,256

	Real estate construction:
	One-to-four family residential	14,781			25,398

	Commercial and multifamily residential	6,869			15,251

	Total real estate construction	21,650			40,649

	Consumer	34,101			44,516

	Subtotal of covered loans	341,142			500,794

	Less:
	Valuation discount resulting from acquisition accounting	43,297			79,401

	Allowance for loan losses	20,174			30,056

	Covered loans, net of valuation discounts and allowance for loan losses	$	277,671		$	391,337

Changes in Accretable Yield for Acquired Loans	'
	The following table shows the changes in accretable yield for acquired loans for the years ended December 31, 2013, 2012, and 2011:


		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	Balance at beginning of period	$	166,888		$	259,669		$	256,572

	Additions resulting from acquisitions	—			—			59,810

	Accretion	(51,816		)	(86,671		)	(90,378		)
	Disposals	(6,898		)	(12,856		)	(31,483		)
	Reclassifications from nonaccretable difference	(4,267		)	6,746			65,148

	Balance at end of period	$	103,907		$	166,888		$	259,669

Schedule of Carrying Amounts for Acquired Loans at Acquisition Date	'



Covered OREO at Carrying Value	'
	The following table sets forth activity in covered OREO at carrying value for the years ended December 31, 2013 and 2012:



		December 31, 2013			December 31, 2012
		(in thousands)
	Covered OREO:
	Balance, beginning of period	$	16,311		$	28,126

	Transfers in	8,827			14,166

	Additional OREO write-downs	(282		)	(3,484		)
	Proceeds from sale of OREO property	(22,046		)	(33,315		)
	Net gain on sale of OREO	9,283			10,818

	Total covered OREO, end of period	$	12,093		$	16,311

FDIC Loss-sharing Asset	'
	The following table shows a detailed analysis of the FDIC loss-sharing asset for the years ending December 31, 2013 and 2012:


		2013			2012
		(in thousands)
	Balance at beginning of period	$	96,354		$	175,071

	Adjustments not reflected in income:
	Cash received from the FDIC	(9,246		)	(54,649		)
	FDIC reimbursable losses, net	(2,245		)	399

	Adjustments reflected in income:
	Amortization, net	(36,729		)	(42,940		)
	Loan impairment (recapture)	(2,609		)	20,714

	Sale of other real estate	(6,177		)	(7,789		)
	Write-downs of other real estate	364			5,190

	Other	134			358

	Balance at end of period	$	39,846		$	96,354

Covered Loans [Member]	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'
Changes in the Allowance for Loan and Lease Losses	'
	The changes in the ALLL for covered loans for the years ended December 31, 2013, 2012, and 2011 are summarized as follows:


		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	Balance at beginning of year	$	30,056		$	4,944		$	6,055

	Loans charged off	(13,853		)	(5,112		)	(1,488		)
	Recoveries	7,232			4,332			2,025

	Provision charged to expense	(3,261		)	25,892			(1,648		)

	Balance at end of year	$	20,174		$	30,056		$	4,944

Covered_Assets_and_FDIC_Losssh2

Covered Assets and FDIC Loss-sharing Asset Covered Loans - Credit Quality Indicators (Tables)	12 Months Ended
	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]	'
Financing Receivable Credit Quality Indicators [Table Text Block]	'
	The following is an analysis of the credit quality of our covered loan portfolio as of December 31, 2013 and 2012:


			Pass			Special Mention			Substandard			Doubtful			Loss			Total
	December 31, 2013		(in thousands)
	Covered loans:
	Commercial business:
	Secured		$	48,510		$	2,849		$	18,291		$	—		$	—		$	69,650

	Unsecured		2,732			396			92			—			—			3,220

	Real estate:
	One-to-four family residential		35,066			1,842			4,734			—			—			41,642

	Commercial and multifamily residential:
	Commercial land		10,778			198			7,589			—			—			18,565

	Income property		55,985			3,950			10,657			—			—			70,592

	Owner occupied		67,653			111			13,958			—			—			81,722

	Real estate construction:
	One-to-four family residential:
	Land and acquisition		4,674			2,739			1,936			—			—			9,349

	Residential construction		3,008			—			2,424			—			—			5,432

	Commercial and multifamily residential:
	Income property		3,806			—			1,709			—			—			5,515

	Owner occupied		1,074			—			280			—			—			1,354

	Consumer		30,722			33			3,319			27			—			34,101

	Total		$	264,008		$	12,118		$	64,989		$	27		$	—		341,142

	Less:
	Valuation discount resulting from acquisition accounting																	43,297

	Allowance for loan losses																	20,174

	Covered loans, net																	$	277,671



			Pass			Special Mention			Substandard			Doubtful			Loss			Total
	December 31, 2012		(in thousands)
	Covered loans:
	Commercial business:
	Secured		$	71,621		$	1,823		$	45,150		$	—		$	—		$	118,594

	Unsecured		4,988			—			1,791			—			—			6,779

	Real estate:
	One-to-four family residential		44,782			1,344			11,024			—			—			57,150

	Commercial and multifamily residential:
	Commercial land		16,336			—			10,292			—			—			26,628

	Income property		81,205			864			23,315			—			—			105,384

	Owner occupied		82,222			3,318			15,554			—			—			101,094

Real estate construction:
One-to-four family residential:
Land and acquisition		4,817			3,273			5,743			—			—			13,833

Residential construction		6,050			—			5,515			—			—			11,565

Commercial and multifamily residential:
Income property		4,419			—			7,901			—			—			12,320

Owner occupied		1,107			—			1,824			—			—			2,931

Consumer		38,973			381			5,162			—			—			44,516

Total		$	356,520		$	11,003		$	133,271		$	—		$	—		500,794

Less:
Valuation discount resulting from acquisition accounting																	79,401

Allowance for loan losses																	30,056

Covered loans, net																	$	391,337

Premises_and_Equipment_Tables

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment	'
	Land, buildings, and furniture and equipment, less accumulated depreciation and amortization, were as follows:



		December 31,
		2013			2012
		(in thousands)
	Land	$	48,992		$	39,441

	Buildings	94,878			84,407

	Leasehold improvements	14,254			2,684

	Furniture and equipment	29,465			24,110

	Vehicles	546			438

	Computer software	17,490			13,783

	Total Cost	205,625			164,863

	Less accumulated depreciation and amortization	(50,893		)	(46,155		)
	Total	$	154,732		$	118,708

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Goodwill and Intangible Assets	'
	The following table sets forth activity for goodwill and other intangible assets for the period:


		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	Total goodwill, beginning of period	$	115,554		$	115,554		$	109,639

	Established through acquisitions	228,398			—			5,915

	Total goodwill, end of period	343,952			115,554			115,554

	Other intangible assets, net
	Core deposit intangible:
	Gross core deposit intangible balance, beginning of period	32,441			32,441			26,652

	Accumulated amortization, beginning of period	(16,720		)	(12,275		)	(7,956		)
	Core deposit intangible, net, beginning of period	15,721			20,166			18,696

	Established through acquisitions	15,257			—			5,789

	CDI current period amortization	(6,045		)	(4,445		)	(4,319		)
	Total core deposit intangible, end of period	24,933			15,721			20,166

	Intangible assets not subject to amortization	919			—			—

	Other intangible assets, net at end of period	25,852			15,721			20,166

	Total goodwill and intangible assets, end of period	$	369,804		$	131,275		$	135,720

Estimated Future Amortization Expense of Core Deposit Intangibles	'
	The following table provides the estimated future amortization expense of core deposit intangibles for the succeeding five years:



	Years Ending December 31,	(in thousands)
	2014	$	5,963

	2015	4,934

	2016	4,195

	2017	3,361

	2018	2,500

Deposits_Tables

Deposits (Tables)	12 Months Ended
	Dec. 31, 2013
Deposits [Abstract]	'
Schedule Of Deposits	'
	Year-end deposits are summarized in the following table:



		December 31,
		2013		2012
		(in thousands)
	Core deposits:
	Demand and other noninterest-bearing	$	2,171,703	$	1,321,171

	Interest-bearing demand	1,170,006		870,821

	Money market	1,569,261		1,043,459

	Savings	496,444		314,371

	Certificates of deposit less than $100,000	288,943		252,544

	Total core deposits	5,696,357		3,802,366

	Certificates of deposit greater than $100,000	201,498		212,924

	Certificates of deposit insured through CDARS®	19,488		26,720

	Brokered money market accounts	41,765		—

	Subtotal	5,959,108		4,042,010

	Valuation adjustment resulting from acquisition accounting	367		75

	Total deposits	$	5,959,475	$	4,042,085

Schedule Of Time Deposits Maturity	'
	The following table shows the amount and maturity of time deposits that had balances of $100,000 or greater:



	Years Ending December 31,	(in thousands)
	2014	$	172,422

	2015	28,556

	2016	11,834

	2017	4,810

	2018	2,162

	Thereafter	106

	Total	$	219,890

Federal_Home_Loan_Bank_and_Fed1

Federal Home Loan Bank and Federal Reserve Bank Borrowings (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Instrument [Line Items]	'
Schedule of Financial Instruments Owned and Pledged as Collateral	'
	The following table summarizes, as of December 31, 2013 and 2012, the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law:


		December 31, 2013				December 31, 2012
		(in thousands)
	Washington and Oregon State to secure public deposits	$	277,012			$	281,006

	Federal Reserve Bank to secure borrowings	42,694				47,634

	Other securities pledged	43,081				46,090

	Total securities pledged as collateral	$	362,787			$	374,730

Federal Home Loan Bank Advances [Member]	'
Debt Instrument [Line Items]	'
Debt Instrument Activity For Year	'
	The maximum, average outstanding and year-end balances and average interest rates on advances from the FHLB were as follows for the years ended December 31, 2013, 2012 and 2011:



		Years ended December 31,
		2013				2012			2011
		(dollars in thousands)
	Balance at end of year	$	36,606			$	6,644		$	119,009

	Average balance during the year	$	51,030			$	100,337		$	120,419

	Maximum month-end balance during the year	$	190,631			$	118,967		$	127,426

	Weighted average rate during the year	1.12		%		2.79		%	2.76		%
	Weighted average rate at December 31	1.09		%		5.42		%	2.81		%
Schedule of Financial Instruments Owned and Pledged as Collateral	'
	FHLB advances are collateralized by the following:



		December 31,
		2013				2012
		(in thousands)
	Recorded value of blanket pledge on loans receivable	$	1,075,389			$	443,419

	Total	$	1,075,389			$	443,419

	FHLB borrowing capacity	$	1,037,159			$	435,189

Federal Home Loan Bank Fixed Rate Advances [Member]	'
Debt Instrument [Line Items]	'
Schedule of Maturities of Long-term Debt	'
	At December 31, 2013 FHLB advances were scheduled to mature as follows:



		Federal Home Loan Bank Advances
		Fixed rate advances
		Wtd Avg Rate			Amount
		(dollars in thousands)
	Within 1 year	0.23	%		$	30,000

	Over 1 through 5 years	5.66	%		1,000

	Due after 10 years	5.37	%		5,000

	Total				36,000

	Valuation adjustment from acquisition accounting				606

	Total				$	36,606

Federal Reserve Bank Advances [Member]	'
Debt Instrument [Line Items]	'
Debt Instrument Activity For Year	'
	Although the Company has not had FRB borrowings in the last three years
Schedule of Financial Instruments Owned and Pledged as Collateral	'
	Federal Reserve Bank:



		December 31,
		2013				2012
		(in thousands)
	Fair value of investment securities	$	40,210			$	45,641

	Recorded value of pledged commercial loans	45,242				13,815

	Total	$	85,452			$	59,456

	Federal Reserve Bank borrowing capacity	$	85,452			$	59,456

Derivatives_and_Balance_Sheet_1

Derivatives and Balance Sheet Offsetting (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative [Line Items]	'
Balance Sheet Offsetting [Table Text Block]	'
	The following tables show the gross interest rate swap agreements and repurchase agreements in the consolidated balance sheets and the respective collateral received or pledged in the form of other financial instruments, which are generally marketable securities. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of overcollateralization are not shown.


		Gross Amounts of Recognized Assets/Liabilities				Gross Amounts Offset in the Consolidated Balance Sheets			Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets
											Collateral Posted				Net Amount
	December 31, 2013	(in thousands)
	Assets
	Interest rate contracts	$	9,044			$	—		$	9,044	$	—			$	9,044

	Liabilities
	Interest rate contracts	$	9,044			$	—		$	9,044	$	(9,044	)		$	—

	Repurchase agreements	$	25,000			$	—		$	25,000	$	(25,000	)		$	—


	December 31, 2012
	Assets
	Interest rate contracts	$	14,921			$	—		$	14,921	$	—			$	14,921

	Liabilities
	Interest rate contracts	$	14,921			$	—		$	14,921	$	(14,921	)		$	—

	Repurchase agreements	$	25,000			$	—		$	25,000	$	(25,000	)		$	—

Not Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Schedule of Fair Value Derivative Instruments	'
	The following table presents the fair value and balance sheet classification of derivatives not designated as hedging instruments at December 31, 2013 and 2012:


		Asset Derivatives									Liability Derivatives
		2013						2012			2013						2012
	(in thousands)	Balance Sheet		Fair Value				Balance Sheet	Fair Value		Balance Sheet		Fair Value				Balance Sheet	Fair Value
		Location						Location			Location						Location
	Interest rate contracts	Other assets		$	9,044			Other assets	$	14,921	Other liabilities		$	9,044			Other liabilities	$	14,921

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Employee Benefit [Line Items]	'
Schedule of Accumulated and Projected Benefit Obligations	'
	The following table reconciles the accumulated liability for the projected benefit obligation:



		December 31,
		2013			2012
		(in thousands)
	Balance at beginning of year	$	11,616		$	11,237

	Established through acquisitions	3,398			—

	Change in actuarial loss	2,212			(80		)

	Benefit expense	1,880			1,017

	Benefit payments	(2,683		)	(558		)
	Balance at end of year	$	16,423		$	11,616

SERP [Member]	'
Employee Benefit [Line Items]	'
Schedule of Expected Benefit Payments	'
	The benefits expected to be paid in conjunction with the SERP are presented in the following table:



	Years Ending December 31,	(in thousands)
	2014	$	1,702

	2015	975

	2016	994

	2017	1,088

	2018	1,355

	2019 through 2023	8,852

	Total	$	14,966

Commitments_and_Contingent_Lia1

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of Future Minimum Rental Payments for Operating Leases	'
	As of December 31, 2013, minimum future rental payments, exclusive of taxes and other charges, of these leases were:


	Years Ending December 31,	(in thousands)
	2014	$	8,033

	2015	6,787

	2016	4,847

	2017	3,642

	2018	3,111

	Thereafter	13,105

	Total minimum payments	$	39,525

Fair_Value_Accounting_and_Meas1

Fair Value Accounting and Measurement (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Financial Assets And Liabilities Accounted For Fair Value On Recurring Basis	'
	The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at December 31, 2013 and 2012 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:


			Fair value at			Fair Value Measurements at Reporting Date Using
			December 31, 2013			Level 1				Level 2			Level 3
			(in thousands)
	Assets
	Securities available for sale
	U.S. government agency and sponsored enterprise mortgage-back securities and collateralized mortgage obligations		$	948,408		$	—			$	948,408		$	—

	State and municipal securities		364,470			—				364,470			—

	U.S. government agency and government-sponsored enterprise securities		326,039			—				326,039			—

	U.S. government securities		20,114			20,114				—			—

	Other securities		5,080			—				5,080			—

	Total securities available for sale		$	1,664,111		$	20,114			$	1,643,997		$	—

	Other assets (Interest rate contracts)		$	9,044		$	—			$	9,044		$	—

	Liabilities
	Other liabilities (Interest rate contracts)		$	9,044		$	—			$	9,044		$	—



			Fair value at			Fair Value Measurements at Reporting Date Using
			December 31, 2012			Level 1				Level 2			Level 3
			(in thousands)
	Assets
	Securities available for sale
	U.S. government agency and sponsored enterprise mortgage-back securities and collateralized mortgage obligations		$	572,369		$	—			$	572,369		$	—

	State and municipal debt securities		285,575			—				285,575			—

	U.S. government agency and government-sponsored enterprise securities		120,501			—				120,501			—

	U.S. government securities		19,828			19,828				—			—

	Other securities		3,392			—				3,392			—

	Total securities available for sale		$	1,001,665		$	19,828			$	981,837		$	—

	Other assets (Interest rate contracts)		$	14,921		$	—			$	14,921		$	—

	Liabilities
	Other liabilities (Interest rate contracts)		$	14,921		$	—			$	14,921		$	—

Financial Assets Accounted For Fair Value On Nonrecurring Basis	'
	The following table sets forth the Company’s assets that were measured using fair value estimates on a nonrecurring basis at December 31, 2013 and 2012:


			Fair value at			Fair Value Measurements at Reporting Date Using										Losses During the Year Ended
			December 31, 2013			Level 1				Level 2			Level 3			31-Dec-13
			(in thousands)
	Impaired loans		$	8,973		$	—			$	—		$	8,973		$	1,536

	Noncovered OREO		5,080			—				—			5,080			994

	Covered OREO		613			—				—			613			236

			$	14,666		$	—			$	—		$	14,666		$	2,766



			Fair value at			Fair Value Measurements at Reporting Date Using										Losses During the Year Ended
			December 31, 2012			Level 1				Level 2			Level 3			December 31, 2012
			(in thousands)
	Impaired loans		$	10,599		$	—			$	—		$	10,599		$	3,891

	Noncovered OREO		10,970			—				—			10,970			3,788

	Covered OREO		2,663			—				—			2,663			1,032

	Noncovered OPPO		210			—				—			210			39

			$	24,442		$	—			$	—		$	24,442		$	8,750

Fair Value Inputs, Assets, Quantitative Information [Table Text Block]	'
	The range and weighted-average of the significant unobservable inputs used to fair value our Level 3 nonrecurring assets during 2013 and 2012, along with the valuation techniques used, are shown in the following tables:


			Fair value at			Valuation Technique		Unobservable Input		Range (Weighted Average) (1)
			December 31, 2013
			(dollars in thousands)
	Impaired loans		$	8,973		Fair Market Value of Collateral		Adjustment to Appraisal Value		N/A (2)

	Noncovered OREO		5,080			Fair Market Value of Collateral		Adjustment to Appraisal Value		N/A (2)

	Covered OREO		613			Fair Market Value of Collateral		Adjustment to Appraisal Value		N/A (2)

	(1) Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable and inventory).
	(2) Quantitative disclosures are not provided for impaired loans, noncovered OREO and covered OREO because there were no adjustments made to the appraisal value during the current period.
Fair Value, by Balance Sheet Grouping	'
	The following tables summarize carrying amounts and estimated fair values of selected financial instruments for the periods indicated:



			December 31,
			2013
			Carrying			Fair				Level 1			Level 2			Level 3
			Amount			Value
			(in thousands)
	Assets
	Cash and due from banks		$	165,030		$	165,030			$	165,030		$	—		$	—

	Interest-earning deposits with banks		14,531			14,531				14,531			—			—

	Securities available for sale		1,664,111			1,664,111				20,114			1,643,997			—

	FHLB stock		32,529			32,529				—			32,529			—

	Loans held for sale		735			735				—			735			—

	Loans		4,444,842			4,605,038				—			—			4,605,038

	FDIC loss-sharing asset		39,846			11,248				—			—			11,248

	Interest rate contracts		9,044			9,044				—			9,044			—

	Liabilities
	Deposits		$	5,959,475		$	5,958,747			$	5,449,546		$	509,201		$	—

	FHLB advances		36,606			35,080				—			35,080			—

	Repurchase agreements		25,000			26,361				—			26,361			—

	Interest rate contracts		9,044			9,044				—			9,044			—



			December 31,
			2012
			Carrying			Fair				Level 1			Level 2			Level 3
			Amount			Value
			(in thousands)
	Assets
	Cash and due from banks		$	124,573		$	124,573			$	124,573		$	—		$	—

	Interest-earning deposits with banks		389,353			389,353				389,353			—			—

	Securities available for sale		1,001,665			1,001,665				19,828			981,837			—

	FHLB stock		21,819			21,819				—			21,819			—

	Loans held for sale		2,563			2,563				—			2,563			—

	Loans		2,864,803			2,944,317				—			—			2,944,317

	FDIC loss-sharing asset		96,354			26,543				—			—			26,543

	Interest rate contracts		14,921			14,921				—			14,921			—

	Liabilities
	Deposits		$	4,042,085		$	4,043,221			$	3,549,821		$	493,400		$	—

	FHLB advances		6,644			5,894				—			5,894			—

Repurchase agreements		25,000			26,464				—			26,464			—

Interest rate contracts		14,921			14,921				—			14,921			—

Earnings_Per_Common_Share_Tabl

Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Schedule of Basic and Diluted Earnings Per Share	'
	The following table sets forth the computation of basic and diluted earnings per share for the periods indicated:


		Year Ended December 31,
		2013		2012		2011
		(in thousands except per share)
	Basic EPS:
	Net income	$	60,016	$	46,143	$	48,037

	Less: Earnings allocated to participating securities
	Preferred shares	95		—		—

	Nonvested restricted shares	523		443		450

	Earnings allocated to common shareholders	$	59,398	$	45,700	$	47,587

	Weighted average common shares outstanding	47,993		39,260		39,103

	Basic earnings per common share	$	1.24	$	1.16	$	1.22

	Diluted EPS:
	Earnings allocated to common shareholders (1)	$	59,407	$	45,700	$	47,588

	Weighted average common shares outstanding	47,993		39,260		39,103

	Dilutive effect of equity awards and warrants	1,058		3		77

	Weighted average diluted common shares outstanding	49,051		39,263		39,180

	Diluted earnings per common share	$	1.21	$	1.16	$	1.21

	Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	64		9		53

ShareBased_Payments_Tables

Share-Based Payments (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of Nonvested Share Activity	'
	A summary of changes in the Company’s nonvested shares and related information for the years ended December 31, 2013, 2012 and 2011 is presented below:



	Nonvested Shares	Shares		Weighted
				Average
				Grant-Date
				Fair Value
	Nonvested at January 1, 2011	353,283		$	21.14

	Granted	133,350		$	19.45

	Vested	(109,033	)	$	25.72

	Forfeited	(14,925	)	$	18.86

	Nonvested at December 31, 2011	362,675		$	19.24

	Granted	180,841		$	21.32

	Vested	(118,511	)	$	21.65

	Forfeited	(40,915	)	$	18.6

	Nonvested at December 31, 2012	384,090		$	19.54

	Granted	203,441		$	20.78

	Vested	(117,153	)	$	16.9

	Forfeited	(59,780	)	$	20.24

	Nonvested at December 31, 2013	410,598		$	20.79

Schedule of Share-based Compensation, Stock Options, Activity	'
	A summary of option activity under the Plan as of December 31, 2013, and changes during the year then ended is presented below. The options granted during 2013 relate to the acquisition of West Coast.



	Options	Shares		Weighted				Weighted	Aggregate
				Average				Average	Intrinsic
				Exercise				Remaining	Value
				Price				Contractual	$0
								Term
	Balance at December 31, 2012	25,952		$	20.13

	Granted	222,110		$	64.11

	Forfeited	(83,284	)	$	69.27

	Expired	(12,544	)	$	81.78

	Exercised	(36,037	)	$	11.46

	Balance at December 31, 2013	116,197		$	65.01			2.8	$	550

	Total Exercisable at December 31, 2013	116,197		$	65.01			2.8	$	550

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	'
	As of December 31, 2013, outstanding stock options consist of the following:



	Ranges of	Number of		Weighted Average		Weighted Average			Number of		Weighted Average
	Exercise Prices	Option		Remaining		Exercise Price of			Exercisable		Exercise Price of
		Shares		Contractual Life		Option Shares			Option Shares		Exercisable Option
											Shares
	$0.00 - $9.99	29,602		5		$	9.91		29,602		$	9.91

	$10.00 - $19.99	2,879		1		$	17.36		2,879		$	17.36

	$30.00 - $39.99	4,051		3.1		$	30.86		4,051		$	30.86

	$40.00 - $49.99	349		4.5		$	44.49		349		$	44.49

	$50.00 - $146.41	79,316		2		$	89.14		79,316		$	89.14

	$0.00 - $146.41	116,197		2.8		$	65.01		116,197		$	65.01

Income_Tax_Tables

Income Tax (Tables)	12 Months Ended
Income Tax (Tables)	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Components of Income Tax Expense (Benefit)	'
	The components of income tax expense (benefit) are as follows:


		Years Ended December 31,
		2013			2012				2011
		(in thousands)
	Current tax expense	$	21,581		$	21,218			$	21,688
	Current tax expense	$	21,581		$	21,218			$	21,688
	Deferred tax expense (benefit)	5,413			(3,656		)		(3,783		)
	Deferred tax expense (benefit)	5,413			(3,656		)		(3,783		)
	Total	$	26,994		$	17,562			$	17,905
	Total	$	26,994		$	17,562			$	17,905
Schedule of Deferred Tax Assets and Liabilities	'
	Significant components of the Company’s deferred tax assets and liabilities are as follows:



		December 31,
		2013			2012
		(in thousands)
	Deferred tax assets:
	Allowance for loan and lease losses	$	27,196		$	30,027
	Allowance for loan and lease losses	$	27,196		$	30,027
	Supplemental executive retirement plan	8,565			6,967
	Supplemental executive retirement plan	8,565			6,967
	Stock option and restricted stock	917			682
	Stock option and restricted stock	917			682
	OREO costs	7,929			3,801
	OREO costs	7,929			3,801
	Nonaccrual interest	2,354			193
	Nonaccrual interest	2,354			193
	Purchase accounting	15,551			—
	Purchase accounting	15,551			—
	Unrealized loss on investment securities	7,176			—
	Unrealized loss on investment securities	7,176			—
	Other	1,741			557
	Other	1,741			557
	Total deferred tax assets	71,429			42,227
	Total deferred tax assets	71,429			42,227
	Deferred tax liabilities:
	Asset purchase tax basis difference	(7,754		)	(19,408		)
	FHLB stock dividends	(4,159		)	(1,963		)
	Purchase accounting	—			(745		)
	Purchase accounting	—			(745		)
	Deferred loan fees	(4,512		)	(1,755		)
	Unrealized gain on investment securities	—			(11,150		)
	Unrealized gain on investment securities	—			(11,150		)
	Depreciation	(7,076		)	(1,870		)
	Total deferred tax liabilities	(23,501		)	(36,891		)
	Net deferred tax asset	$	47,928		$	5,336
	Net deferred tax asset	$	47,928		$	5,336
Schedule of Effective Income Tax Rate Reconciliation	'
	A reconciliation of the Company’s effective income tax rate with the federal statutory tax rate is as follows:


		Years Ended December 31,
		2013						2012						2011
		Amount			Percent			Amount				Percent		Amount			Percent
		(dollars in thousands)
	Income tax based on statutory rate	$	30,454		35	%		$	22,297			35	%	$	23,080		35	%
	Income tax based on statutory rate	$	30,454		35	%		$	22,297			35	%	$	23,080		35	%
	Reduction resulting from:
	Tax credits	(1,038		)	(1	)%		(504		)		(1	)%	(608		)	(1	)%
	Tax exempt instruments	(4,113		)	(5	)%		(3,906		)		(6	)%	(3,824		)	(6	)%
	Life insurance proceeds	(1,250		)	(1	)%		(1,001		)		(2	)%	(766		)	(1	)%
	Bargain purchase	—			—	%		—				—	%	(1,036		)	(2	)%
	Bargain purchase	—			—	%		—				—	%	(1,036		)	(2	)%
	Acquisition costs	1,362			2	%		—				—	%	—			—	%
	Acquisition costs	1,362			2	%		—				—	%	—			—	%
	Other, net	1,579			1	%		676				1	%	1,059			2	%
	Other, net	1,579			1	%		676				1	%	1,059			2	%
	Income tax provision	$	26,994		31	%		$	17,562			27	%	$	17,905		27	%
	Income tax provision	$	26,994		31	%		$	17,562			27	%	$	17,905		27	%

Regulatory_Capital_Requirement1

Regulatory Capital Requirements (Tables)	12 Months Ended
	Dec. 31, 2013
Regulatory Capital Requirements [Abstract]	'
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	'
	As of December 31, 2013, the most recent notification from the Federal Deposit Insurance Corporation categorized Columbia Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the following tables. There are no conditions or events since the notification that management believes have changed Columbia Bank’s category. The Company and its banking subsidiary’s actual capital amounts and ratios as of December 31, 2013 and 2012, are also presented in the following table.



		Actual				For Capital				To Be Well
						Adequacy				Capitalized Under
						Purposes				Prompt
										Corrective Action
										Provision
		Amount		Ratio		Amount		Ratio		Amount		Ratio
		(dollars in thousands)
	As of December 31, 2013
	Total Capital (to risk-weighted assets):
	The Company	$	760,349	14.68	%	$	414,300	8	%	N/A		N/A

	Columbia Bank	$	700,099	13.52	%	$	414,238	8	%	$	517,797	10	%

	Tier 1 Capital (to risk-weighted assets):
	The Company	$	695,489	13.43	%	$	207,150	4	%	N/A		N/A

	Columbia Bank	$	635,248	12.27	%	$	207,119	4	%	$	310,678	6	%

	Tier 1 Capital (to average assets):
	The Company	$	695,489	10.19	%	$	272,891	4	%	N/A		N/A

	Columbia Bank	$	635,248	9.29	%	$	273,560	4	%	$	341,950	5	%

	As of December 31, 2012
	Total Capital (to risk-weighted assets):
	The Company	$	652,704	20.62	%	$	253,242	8	%	N/A		N/A

	Columbia Bank	$	565,677	17.87	%	$	253,244	8	%	$	316,556	10	%

	Tier 1 Capital (to risk-weighted assets):
	The Company	$	612,584	19.35	%	$	126,621	4	%	N/A		N/A

	Columbia Bank	$	525,556	16.6	%	$	126,622	4	%	$	189,933	6	%

	Tier 1 Capital (to average assets):
	The Company	$	612,584	12.78	%	$	191,778	4	%	N/A		N/A

	Columbia Bank	$	525,556	11.07	%	$	189,986	4	%	$	237,483	5	%

Parent_Company_Financial_Infor1

Parent Company Financial Information (Tables)	12 Months Ended
	Dec. 31, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Condensed Statements of Income - Parent Company Only	'
	Condensed Statements of Income—Parent Company Only


		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	Income
	Dividend from banking subsidiary	$	183,000		$	48,950		$	—

	Interest-earning deposits	68			153			712

	Other income	7			—			17

	Total income	183,075			49,103			729

	Expense
	Compensation and employee benefits	658			182			88

	Long-term obligations	—			—			579

	Other borrowings	258			—			—

	Other expense	4,162			1,193			1,114

	Total expenses	5,078			1,375			1,781

	Income (loss) before income tax expense (benefit) and equity in undistributed net income of subsidiaries	177,997			47,728			(1,052		)

	Income tax expense (benefit)	(1,552		)	(435		)	91

	Income (loss) before equity in undistributed net income of subsidiaries	179,549			48,163			(1,143		)

	Equity in undistributed net income (loss) of subsidiaries	(119,533		)	(2,020		)	49,180

	Net income	$	60,016		$	46,143		$	48,037

Condensed Balance Sheets - Parent Company Only	'
	Condensed Balance Sheets—Parent Company Only


		December 31,
		2013			2012
		(in thousands)
	Assets
	Cash and due from banking subsidiary	$	3,006		$	1,729

	Interest-earning deposits	50,678			84,915

	Total cash and cash equivalents	53,684			86,644

	Investment in banking subsidiary	993,002			676,974

	Investment in other subsidiaries	5,037			—

	Other assets	1,952			649

	Total assets	$	1,053,675		$	764,267

	Liabilities and Shareholders’ Equity
	Other liabilities	$	426		$	259

	Total liabilities	426			259

	Shareholders’ equity	1,053,249			764,008

	Total liabilities and shareholders’ equity	$	1,053,675		$	764,267

Condensed Statements of Cash Flows - Parent Company Only	'
	Condensed Statements of Cash Flows—Parent Company Only


		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	Operating Activities
	Net income	$	60,016		$	46,143		$	48,037

	Adjustments to reconcile net income to net cash provided by operating activities:
	Equity in undistributed loss (earnings) of subsidiaries	119,533			2,020			(49,180		)

	Stock-based compensation expense	2,844			1,622			1,635

	Net changes in other assets and liabilities	6,830			(264		)	315

	Net cash provided by operating activities	189,223			49,521			807

	Investing Activities
	Net cash paid in business combinations	(53,159		)	—			—

	Proceeds from termination of trust subsidiaries	—			—			774

	Net cash provided by (used in) investing activities	(53,159		)	—			774

	Financing Activities
	Preferred stock dividends	(32		)	—			—

	Common stock dividends	(19,858		)	(38,824		)	(10,660		)
	Repayment of long-term subordinated debt	(51,000		)	—			(25,774		)

	Purchase and retirement of common stock	(429		)	—			(32		)

	Proceeds from exercise of stock options	1,092			713			848

	Downstream stock offering proceeds to the Bank	(100,000		)	—			(50,000		)

	Excess tax benefit associated with share-based compensation	1,203			—			98

	Net cash used in financing activities	(169,024		)	(38,111		)	(85,520		)
	Increase (decrease) in cash and cash equivalents	(32,960		)	11,410			(83,939		)

	Cash and cash equivalents at beginning of year	86,644			75,234			159,173

	Cash and cash equivalents at end of year	$	53,684		$	86,644		$	75,234

Summary_Of_Quarterly_Financial1

Summary Of Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Schedule of Quarterly Financial Information	'
	Quarterly financial information for the years ended December 31, 2013 and 2012 is summarized as follows:



		First			Second			Third			Fourth			Year Ended
		Quarter			Quarter			Quarter			Quarter			December 31,
		(in thousands, except per share amounts)
	2013
	Total interest income	$	54,761		$	82,268		$	81,599		$	78,307		$	296,935

	Total interest expense	1,279			2,279			1,184			1,098			5,840

	Net interest income	53,482			79,989			80,415			77,209			291,095

	Provision (recapture) for loan and lease losses	(1,000		)	2,000			4,260			(2,100		)	3,160

	Provision (recapture) for losses on covered loans	980			(1,712		)	(947		)	(1,582		)	(3,261		)

	Noninterest income	1,658			6,808			7,622			10,612			26,700

	Noninterest expense	38,049			64,504			64,714			63,619			230,886

	Income before income taxes	17,111			22,005			20,010			27,884			87,010

	Provision for income taxes	4,935			7,414			6,734			7,911			26,994

	Net income	$	12,176		$	14,591		$	13,276		$	19,973		$	60,016

	Per common share (1)
	Earnings (basic)	$	0.31		$	0.28		$	0.26		$	0.39		$	1.24

	Earnings (diluted)	$	0.31		$	0.28		$	0.25		$	0.38		$	1.21

	2012
	Total interest income	$	69,712		$	62,114		$	59,469		$	57,209		$	248,504

	Total interest expense	2,649			2,413			2,204			2,311			9,577

	Net interest income	67,063			59,701			57,265			54,898			238,927

	Provision for loan and lease losses	4,500			3,750			2,875			2,350			13,475

	Provision (recapture) for losses on covered loans	15,685			11,688			(3,992		)	2,511			25,892

	Noninterest income (loss)	9,574			11,828			(911		)	6,567			27,058

	Noninterest expense	44,352			39,825			40,936			37,800			162,913

	Income before income taxes	12,100			16,266			16,535			18,804			63,705

	Provision for income taxes	3,198			4,367			4,655			5,342			17,562

	Net income	$	8,902		$	11,899		$	11,880		$	13,462		$	46,143

	Per common share (1)
	Earnings (basic)	$	0.22		$	0.3		$	0.3		$	0.34		$	1.16

	Earnings (diluted)	$	0.22		$	0.3		$	0.3		$	0.34		$	1.16

	__________
	(1) Due to averaging of shares, quarterly earnings per share may not add up to the totals reported for the full year.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
	location
Accounting Policies [Line Items]	'
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Revenue	$12,300,000
Number Of Branch Locations	142
Number Of Days Used To Determine Treatment As Cash Equivalent	'90 days
Number of Days of Delinqunecy at Which Loans Are Categorized As Non Accrual Status	'90 days
Loans and Leases Receivable, Nonaccrual Loans Considered Impaired	500,000
Loans and Leases Receivable, Loans Evaluated For Impairment On Quarterly Basis, Outstanding	500,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income	$8,000,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share	$0.16
Core Deposits [Member]	'
Accounting Policies [Line Items]	'
Estimated life of CDI, in years	'10 years
WASHINGTON	'
Accounting Policies [Line Items]	'
Number Of Branch Locations	80
OREGON	'
Accounting Policies [Line Items]	'
Number Of Branch Locations	62
Vehicles [Member]	'
Accounting Policies [Line Items]	'
Property, Plant and Equipment, Estimated Useful Lives	'P5Y
Minimum [Member] \| Building and Building Improvements [Member]	'
Accounting Policies [Line Items]	'
Property, Plant and Equipment, Estimated Useful Lives	'P5Y
Minimum [Member] \| Furniture and Fixtures [Member]	'
Accounting Policies [Line Items]	'
Property, Plant and Equipment, Estimated Useful Lives	'P3Y
Minimum [Member] \| Software [Member]	'
Accounting Policies [Line Items]	'
Property, Plant and Equipment, Estimated Useful Lives	'P3Y
Maximum [Member] \| Building and Building Improvements [Member]	'
Accounting Policies [Line Items]	'
Property, Plant and Equipment, Estimated Useful Lives	'P39Y
Maximum [Member] \| Furniture and Fixtures [Member]	'
Accounting Policies [Line Items]	'
Property, Plant and Equipment, Estimated Useful Lives	'P7Y
Maximum [Member] \| Software [Member]	'
Accounting Policies [Line Items]	'
Property, Plant and Equipment, Estimated Useful Lives	'P5Y
Covered Loans [Member]	'
Accounting Policies [Line Items]	'
Percentage of covered loans that are subject to an FDIC loss-sharing agreement	96.00%
Percentage of covered loans accounted for as acquired, impaired loans	90.00%

Business_Combinations_Details

Business Combinations (Details) (USD $)	12 Months Ended		0 Months Ended	12 Months Ended		0 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Apr. 02, 2013	Dec. 31, 2013	Dec. 31, 2012	20-May-11	Aug. 05, 2011	27-May-11	20-May-11	27-May-11
			West Coast Bancorp [Member]	West Coast Bancorp [Member]	West Coast Bancorp [Member]	Summit Bank [Member]	Bank of Whitman [Member]	First Heritage Bank [Member]	Scenario, Previously Reported [Member]	Scenario, Previously Reported [Member]
									Summit Bank [Member]	First Heritage Bank [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'	'
Business Acquisition, Pro Forma Revenue	'	'	'	$337,712	$420,167	'	'	'	'	'
Business Acquisition, Effective Date of Acquisition	'	'	1-Apr-13	'	'	20-May-11	5-Aug-11	27-May-11	'	'
Business Acquisition, Purchase Price Allocation, Current Assets, Cash and Cash Equivalents	'	'	110,440	'	'	1,837	52,072	4,688	'	'
Business Combination, Acquired Receivables, Fair Value	'	'	1,407,798	'	'	69,783	200,041	81,488	71,400	81,900
Business Acquisition, Purchase Price Allocation, Current Assets, Marketable Securities	'	'	730,842	'	'	871	16,298	5,303	'	'
Business Acquisition, Purchase Price Allocation, Federal Reserve Bank and Federal Home Loan Bank Stock	'	'	'	'	'	'	3,977	'	'	'
Business Acquisition, Purchase Price Allocation, Accrued Interest Receivable	'	'	'	'	'	429	1,975	476	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	'	'	35,884	'	'	42	86	5,339	'	'
Business Acquisition, Purchase Price Allocation, FDIC Receivable	'	'	'	'	'	6,984	156,710	4,751	'	'
Business Combination, Purchase Price Allocation, Amortizable Intangible Assets	'	'	15,257	'	'	509	3,943	1,337	'	'
Business Combination, Purchase Price Allocation, Other Assets	'	'	75,820	'	'	1,813	2,447	3,657	786	1,700
Business Acquisition, Purchase Price Allocation, Assets Acquired	'	'	'	'	'	131,129	437,549	164,984	'	'
Business Acquisition, Purchase Price Allocation, Liabilities, Deposits	'	'	-1,883,407	'	'	-123,279	-401,127	-159,525	'	'
Business Acquisition, Purchase Price Allocation, Federal Home Loan Bank Advances	'	'	-128,885	'	'	-7,772	-32,949	-5,003	'	'
Business Acquisition, Purchase Price Allocation, Current Liabilities, Accrued Liabilities	'	'	'	'	'	71	213	421	'	'
Business Acquisition, Purchase Price Allocation, Deferred Taxes Asset (Liability), Net, Noncurrent	'	'	'	'	'	'	1,034	'	'	'
Business Acquisition, Purchase Price Allocation, Other Noncurrent Liabilities	'	'	-26,888	'	'	-7	-396	-35	'	'
Business Acquisition, Purchase Price Allocation, Liabilities Assumed	'	'	'	'	'	131,129	435,719	164,984	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	'	'	312,393	'	'	'	1,830	'	'	'
Business Acquisition, Purchase Price Allocation, Interest Earning Deposits With Banks	'	'	'	'	'	'	'	6,689	'	'
Business Acquisition, Purchase Price Allocation, FHLB Stock	'	'	11,824	'	'	406	'	477	'	'
Business Acquisition, Purchase Price Allocation, Loans Covered By Loss Sharing	'	'	'	'	'	2,162	'	8,225	2,700	8,300
Business Combination, Purchase Price Allocation, Goodwill Amount	'	'	228,398	'	'	1,892	'	4,023	'	'
Business Acquisition, Purchase Price Allocation, FDIC Indemnification Asset	'	'	'	'	'	30,203	'	38,531	27,200	38,100
Business Acquisition, Purchase Price Allocation, Interest Earning Deposits With Banks And Federal Funds Sold	'	'	'	'	'	14,198	'	'	'	'
Business Acquisition, Cost of Acquired Entity, Purchase Price	'	'	540,791	'	'	'	'	'	'	'
Business Acquisition, Purchase Price Allocation, Other Real Estate Owned	'	'	14,708	'	'	'	'	'	'	'
Business Acquisition, Purchase Price Allocation, Junior Subordinated Debentures	'	'	-51,000	'	'	'	'	'	'	'
Business Acquisition, Pro Forma Net Income (Loss)	$76,496	$91,261	'	'	'	'	'	'	'	'
Business Acquisition, Pro Forma Earnings Per Share, Basic	'	'	'	$1.50	$1.79	'	'	'	'	'
Business Acquisition, Pro Forma Earnings Per Share, Diluted	'	'	'	$1.46	$1.74	'	'	'	'	'

Business_Combinations_narrativ

Business Combinations narrative (Details) (USD $)

7 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Apr. 02, 2013

Dec. 31, 2013

Dec. 31, 2012

Aug. 05, 2011

Dec. 31, 2012

27-May-11

Dec. 31, 2012

20-May-11

Dec. 31, 2012

27-May-11

20-May-11

West Coast Bancorp [Member]

Bank of Whitman [Member]

First Heritage Bank [Member]

Summit Bank [Member]

Scenario, Previously Reported [Member]

location

First Heritage Bank [Member]

Summit Bank [Member]

Business Acquisition [Line Items]

Business Combination, Purchase Price Allocation, Goodwill Amount

$228,398,000

$4,023,000

$1,892,000

Business Acquisition, Purchase Price Allocation, Loans Covered By Loss Sharing

8,225,000

2,162,000

8,300,000

2,700,000

Business Acquisition, Effective Date of Acquisition

1-Apr-13

5-Aug-11

27-May-11

20-May-11

Business Combination, Acquired Receivables, Fair Value

1,407,798,000

200,041,000

81,488,000

69,783,000

81,900,000

71,400,000

Number Of Branch Locations To Be Acquired

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

312,393,000

1,830,000

Gain on bank acquisitions, net of tax

1,830,000

1,800,000

Business Combination, Purchase Price Allocation, Amortizable Intangible Assets

15,257,000

3,943,000

1,337,000

509,000

Business Combination, Acquisition Related Costs

25,500,000

1,800,000

Number Of Branch Locations Excluded From Operating Results

Percentage of loss shared by FDIC

80.00%

FDIC Percentage Of Loss Recoveries

80.00%

Business Acquisition, Purchase Price Allocation, FDIC Indemnification Asset

38,531,000

30,203,000

38,100,000

27,200,000

Business Combination, Purchase Price Allocation, Other Assets

75,820,000

2,447,000

3,657,000

1,813,000

1,700,000

786,000

Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Acquired Loans

-369,000

-1,700,000

Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Loans Covered By Loss Sharing

-61,000

-509,000

Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, FDIC Indemnification Asset

427,000

3,000,000

Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Assets

1,900,000

1,000,000

Business Acquisition, Purchase Price Allocation, Liabilities, Deposits

1,883,407,000

401,127,000

159,525,000

123,279,000

Business Acquisition, Purchase Price Allocation, Federal Home Loan Bank Advances

$128,885,000

$32,949,000

$5,003,000

$7,772,000

Cash_and_Cash_Equivalents_Deta

Cash and Cash Equivalents (Details) (Federal Reserve Bank [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Federal Reserve Bank [Member]	'	'
Restricted Cash and Cash Equivalents Items [Line Items]	'	'
Restricted Cash and Cash Equivalents	$36.30	$28.60

Securities_Securities_Availabl

Securities (Securities Available for Sale) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized Cost	$1,680,491	$969,359	'
Gross Unrealized Gains	22,551	38,606	'
Gross Unrealized Losses	38,931	6,300	'
Fair Value	1,664,111	1,001,665	'
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]	'	'	'
Gross realized losses	170	714	250
Gross realized gains	632	4,400	384
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized Cost	961,442	561,076	'
Gross Unrealized Gains	10,640	16,719	'
Gross Unrealized Losses	23,674	5,426	'
Fair Value	948,408	572,369	'
State and Municipal Securities [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized Cost	357,013	265,070	'
Gross Unrealized Gains	11,450	20,893	'
Gross Unrealized Losses	3,993	388	'
Fair Value	364,470	285,575	'
U.S. Government Agency and Government-Sponsored Enterprise Securities [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized Cost	335,671	120,085	'
Gross Unrealized Gains	434	851	'
Gross Unrealized Losses	10,066	435	'
Fair Value	326,039	120,501	'
US Treasury Securities [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized Cost	21,081	19,804	'
Gross Unrealized Gains	0	39	'
Gross Unrealized Losses	967	15	'
Fair Value	20,114	19,828	'
Other Securities [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized Cost	5,284	3,324	'
Gross Unrealized Gains	27	104	'
Gross Unrealized Losses	231	36	'
Fair Value	$5,080	$3,392	'

Securities_Schedule_of_Contrac

Securities (Schedule of Contractual Maturities of Investment Securities Available for Sale) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2013
Available-for-sale Securities [Abstract]	'
Due within one year, Amortized Cost	$14,079
Due after one year through five years, Amortized Cost	303,875
Due after five years through ten years, Amortized Cost	487,643
Due after ten years, Amortized Cost	869,610
Total investment securities available-for-sale, Amortized Cost	1,680,491
Due within one year, Fair Value	14,239
Due after one year through five years, Fair Value	302,641
Due after five years through ten years, Fair Value	480,244
Due after ten years, Fair Value	861,907
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	5,284
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	5,080
Total investment securities available-for-sale, Fair Value	$1,664,111

Securities_Carrying_Value_of_S

Securities (Carrying Value of Securities Pledged as Collateral) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying amount of securities pledged as collateral	$362,787	$374,730
To Washington and Oregon State To Secure Public Deposits [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying amount of securities pledged as collateral	277,012	281,006
To Federal Reserve Bank To Secure Borrowings [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying amount of securities pledged as collateral	42,694	47,634
Other Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Carrying amount of securities pledged as collateral	$43,081	$46,090

Securities_Summary_of_Gross_Un

Securities (Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	$887,693	$254,666
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss, Instant	23,148	5,923
12 Months or More Fair Value	166,348	13,378
12 Months or More Unrealized Losses	-15,783	-377
Total Fair Value	1,054,041	268,044
Total Unrealized Losses	-38,931	-6,300
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	492,921	167,739
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss, Instant	10,991	5,090
12 Months or More Fair Value	121,303	12,204
12 Months or More Unrealized Losses	-12,684	-336
Total Fair Value	614,224	179,943
Total Unrealized Losses	-23,675	-5,426
State and Municipal Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	112,400	20,413
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss, Instant	3,069	383
12 Months or More Fair Value	13,815	210
12 Months or More Unrealized Losses	-923	-5
Total Fair Value	126,215	20,623
Total Unrealized Losses	-3,992	-388
U.S. Government and Government-Sponsored Enterprise Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	260,001	56,600
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss, Instant	8,063	435
12 Months or More Fair Value	28,447	0
12 Months or More Unrealized Losses	-2,003	0
Total Fair Value	288,448	56,600
Total Unrealized Losses	-10,066	-435
US Treasury Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	20,114	9,914
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss, Instant	967	15
12 Months or More Fair Value	0	0
12 Months or More Unrealized Losses	0	0
Total Fair Value	20,114	9,914
Total Unrealized Losses	-967	-15
Other Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	2,257	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss, Instant	58	0
12 Months or More Fair Value	2,783	964
12 Months or More Unrealized Losses	-173	-36
Total Fair Value	5,040	964
Total Unrealized Losses	($231)	($36)

Securities_Narrative_Details

Securities (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2013
	Dec. 31, 2012	security
Schedule of Available-for-sale Securities [Line Items]	'	'
Number Of Issuances Of Securities Exceeding Shareholders Equity Threshold	'	0
U.S. Government and Government-Sponsored Enterprise Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number Of Securities In Unrealized Loss Position	'	31
Number Of Securities In Continuous Loss Position For Twelve Months or More	'	3
US Treasury Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number Of Securities In Unrealized Loss Position	'	5
Other Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Issuances Of Securities Exceeding Shareholders Equity Threshold, Percent	'	10.00%
Number Of Securities In Unrealized Loss Position	'	2
Number Of Securities In Continuous Loss Position For Twelve Months or More	'	1
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number Of Securities In Unrealized Loss Position	'	84
Number Of Securities In Continuous Loss Position For Twelve Months or More	'	11
Municipal Bonds [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number Of Securities In Unrealized Loss Position	'	131
Number Of Securities In Continuous Loss Position For Twelve Months or More	'	11
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	$3	'

Noncovered_Loans_Narrative_Det

Noncovered Loans (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	contract	contract	contract
	loan
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans to related parties	$14,200,000	$14,200,000	'
Repayments on related party loans	2,000,000	'	'
Commercial and residential real estate loans pledged as FHLB collateral	1,075,389,000	443,419,000	'
Federal Reserve Bank, Advances, Collateral Pledged	85,452,000	59,456,000	'
Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest	34,000,000	37,400,000	'
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	2,900,000	3,400,000	5,300,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing, Number of Loans	0	'	'
Loans and Leases Receivable, Nonaccrual of Interest, Commitments of Additional Funds	28,000	346,000	'
Financing Receivable Modifications Additional Commitment To Lend	0	236,000	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0
Loans Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Commercial and residential real estate loans pledged as FHLB collateral	$1,075,389,000	$443,419,000	'

Noncovered_Loans_Analysis_of_L

Noncovered Loans (Analysis of Loan Portfolio by Major Types of Loans) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans, net	$4,444,842	$2,864,803	'	'
Loans held for sale	735	2,563	'	'
Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Less: Net unearned income	-68,282	-7,767	'	'
Total noncovered loans, net of unearned income	4,219,451	2,525,710	'	'
Less: Allowance for loan and lease losses	-52,280	-52,244	-53,041	-60,993
Loans, net	4,167,171	2,473,466	'	'
Loans held for sale	735	2,563	'	'
Noncovered Loans [Member] \| One-to-Four Family Residential [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Real Estate	108,317	43,922	'	'
Real Estate Construction	54,155	50,602	'	'
Less: Allowance for loan and lease losses	-1,252	-694	-654	-1,100
Noncovered Loans [Member] \| Commercial and Multifamily Residential [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Real Estate	2,080,075	1,061,201	'	'
Real Estate Construction	126,390	65,101	'	'
Noncovered Loans [Member] \| Commercial Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Commercial Business	1,561,782	1,155,158	'	'
Noncovered Loans [Member] \| Real Estate Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Total Real Estate	2,188,392	1,105,123	'	'
Noncovered Loans [Member] \| Real Estate Construction Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Total Real Estate Construction	180,545	115,703	'	'
Noncovered Loans [Member] \| Consumer Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Consumer	357,014	157,493	'	'
Less: Allowance for loan and lease losses	($2,547)	($2,437)	($2,719)	($2,120)

Noncovered_Loans_Analysis_of_N

Noncovered Loans (Analysis of Nonaccrual Loans) (Details) (Noncovered Loans [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	$34,015	$37,395
Unpaid Principal Balance Nonaccrual Loans	52,434	57,877
Recorded Investment Nonaccrual Loans	'	37,395
Consumer Portfolio Segment [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	3,991	1,643
Unpaid Principal Balance Nonaccrual Loans	6,187	1,940
Recorded Investment Nonaccrual Loans	'	1,643
Secured Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	12,433	9,037
Unpaid Principal Balance Nonaccrual Loans	19,186	17,821
Recorded Investment Nonaccrual Loans	'	9,037
Unsecured Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	176	262
Unpaid Principal Balance Nonaccrual Loans	202	262
Recorded Investment Nonaccrual Loans	'	262
One-to-Four Family Residential [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	2,667	2,349
Unpaid Principal Balance Nonaccrual Loans	4,678	2,672
Recorded Investment Nonaccrual Loans	'	2,349
Commercial Land [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	442	4,076
Unpaid Principal Balance Nonaccrual Loans	783	7,491
Recorded Investment Nonaccrual Loans	'	4,076
Income Property Multifamily [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	4,267	8,520
Unpaid Principal Balance Nonaccrual Loans	5,383	10,815
Recorded Investment Nonaccrual Loans	'	8,520
Owner Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	6,334	6,608
Unpaid Principal Balance Nonaccrual Loans	7,486	7,741
Recorded Investment Nonaccrual Loans	'	6,608
Land And Acquisition [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	3,246	3,084
Unpaid Principal Balance Nonaccrual Loans	6,601	6,704
Recorded Investment Nonaccrual Loans	'	3,084
Residential Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	459	1,816
Unpaid Principal Balance Nonaccrual Loans	1,928	2,431
Recorded Investment Nonaccrual Loans	'	1,816
Income Property Multifamily Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	0	0
Owner Occupied Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Recorded Investment Nonaccrual Loans	$0	$0

Noncovered_Loans_Analysis_of_t

Noncovered Loans (Analysis of the Aged Loan Portfolio) (Details) (Noncovered Loans [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	$4,158,873	$2,476,797
30 - 59 Days Past Due	20,754	9,168
60 - 89 Days Past Due	5,809	2,350
Total Past Due	26,563	11,518
Nonaccrual Loans	34,015	37,395
Loans Receivable, Net	4,219,451	2,525,710
Income Property Multifamily Construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	86,521	28,342
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	86,521	28,342
Consumer Portfolio Segment [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	322,685	155,207
30 - 59 Days Past Due	835	387
60 - 89 Days Past Due	823	362
Total Past Due	1,658	749
Nonaccrual Loans	3,991	1,643
Loans Receivable, Net	328,334	157,599
Secured Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	1,457,820	1,091,770
30 - 59 Days Past Due	12,713	4,259
60 - 89 Days Past Due	681	1,485
Total Past Due	13,394	5,744
Nonaccrual Loans	12,433	9,037
Loans Receivable, Net	1,483,647	1,106,551
Unsecured Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	72,255	44,817
30 - 59 Days Past Due	156	252
60 - 89 Days Past Due	17	12
Total Past Due	173	264
Nonaccrual Loans	176	262
Loans Receivable, Net	72,604	45,343
One-to-Four Family Residential [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	100,591	41,508
30 - 59 Days Past Due	1,993	193
60 - 89 Days Past Due	641	142
Total Past Due	2,634	335
Nonaccrual Loans	2,667	2,349
Loans Receivable, Net	105,892	44,192
Commercial Land [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	142,034	42,818
30 - 59 Days Past Due	0	311
60 - 89 Days Past Due	358	122
Total Past Due	358	433
Nonaccrual Loans	442	4,076
Loans Receivable, Net	142,834	47,327
Owner Occupied [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	749,561	387,525
30 - 59 Days Past Due	4,714	1,040
60 - 89 Days Past Due	0	0
Total Past Due	4,714	1,040
Nonaccrual Loans	6,334	6,608
Loans Receivable, Net	760,609	395,173
Land And Acquisition [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	8,225	15,412
30 - 59 Days Past Due	199	0
60 - 89 Days Past Due	0	0
Total Past Due	199	0
Nonaccrual Loans	3,246	3,084
Loans Receivable, Net	11,670	18,496
Residential Construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	41,533	29,848
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	459	1,816
Loans Receivable, Net	41,992	31,664
Income Property Multifamily [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	1,138,732	603,339
30 - 59 Days Past Due	144	2,726
60 - 89 Days Past Due	3,289	227
Total Past Due	3,433	2,953
Nonaccrual Loans	4,267	8,520
Loans Receivable, Net	1,146,432	614,812
Owner Occupied Construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current Loans	38,916	36,211
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	$38,916	$36,211

Noncovered_Loans_Analysis_of_I

Noncovered Loans (Analysis of Impaired Loans) (Details) (Noncovered Loans [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Recorded Investment of Loans Collectively Measured for Contingency Provision	$4,193,062	$2,491,049	'
Recorded Investment of Loans Individually Measured for Specific Impairment	26,389	34,661	'
Recorded Investment	23	0	'
Unpaid Principal Balance	27	0	'
Related Allowance	4	0	'
Impaired Financing Receivable, Average Recorded Investment	32,039	47,524	71,060
Impaired Financing Receivable, Interest Income, Accrual Method	1,306	1,114	719
Income Property Multifamily Construction [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	86,521	28,342	'
Recorded Investment of Loans Individually Measured for Specific Impairment	0	0	'
Recorded Investment	0	0	'
Unpaid Principal Balance	0	0	'
Related Allowance	0	0	'
Impaired Financing Receivable, Average Recorded Investment	0	3,169	7,065
Impaired Financing Receivable, Interest Income, Accrual Method	0	0	0
Consumer Portfolio Segment [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	328,167	157,472	'
Recorded Investment of Loans Individually Measured for Specific Impairment	167	127	'
Impaired Financing Receivable, Average Recorded Investment	253	1,112	3,880
Impaired Financing Receivable, Interest Income, Accrual Method	6	7	15
Land And Acquisition [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	9,726	15,677	'
Recorded Investment of Loans Individually Measured for Specific Impairment	1,944	2,819	'
Recorded Investment	113	0	'
Unpaid Principal Balance	113	0	'
Related Allowance	71	0	'
Impaired Financing Receivable, Average Recorded Investment	2,624	4,465	8,972
Impaired Financing Receivable, Interest Income, Accrual Method	6	0	116
Residential Construction [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	41,992	29,707	'
Recorded Investment of Loans Individually Measured for Specific Impairment	0	1,957	'
Recorded Investment	0	0	'
Unpaid Principal Balance	0	0	'
Related Allowance	0	0	'
Impaired Financing Receivable, Average Recorded Investment	420	3,223	4,535
Impaired Financing Receivable, Interest Income, Accrual Method	0	11	0
Commercial Land [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	142,719	44,672	'
Recorded Investment of Loans Individually Measured for Specific Impairment	115	2,655	'
Recorded Investment	0	0	'
Unpaid Principal Balance	0	0	'
Related Allowance	0	0	'
Impaired Financing Receivable, Average Recorded Investment	1,691	3,124	4,263
Impaired Financing Receivable, Interest Income, Accrual Method	0	0	0
Income Property Multifamily [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,140,019	606,656	'
Recorded Investment of Loans Individually Measured for Specific Impairment	6,413	8,156	'
Recorded Investment	918	2,670	'
Unpaid Principal Balance	933	2,727	'
Related Allowance	26	1,040	'
Impaired Financing Receivable, Average Recorded Investment	8,910	7,895	8,881
Impaired Financing Receivable, Interest Income, Accrual Method	238	77	59
Owner Occupied [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	749,601	383,269	'
Recorded Investment of Loans Individually Measured for Specific Impairment	11,008	11,904	'
Recorded Investment	3,802	608	'
Unpaid Principal Balance	3,817	610	'
Related Allowance	1,073	38	'
Impaired Financing Receivable, Average Recorded Investment	10,779	13,315	15,254
Impaired Financing Receivable, Interest Income, Accrual Method	971	1,004	18
Owner Occupied Construction [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	38,916	36,211	'
Recorded Investment of Loans Individually Measured for Specific Impairment	0	0	'
Recorded Investment	0	0	'
Unpaid Principal Balance	0	0	'
Related Allowance	0	0	'
One-to-Four Family Residential [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	104,272	42,103	'
Recorded Investment of Loans Individually Measured for Specific Impairment	1,620	2,089	'
Recorded Investment	442	345	'
Unpaid Principal Balance	479	364	'
Related Allowance	138	112	'
Impaired Financing Receivable, Average Recorded Investment	1,665	2,130	2,494
Impaired Financing Receivable, Interest Income, Accrual Method	63	0	0
Secured Loans [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,478,560	1,101,689	'
Recorded Investment of Loans Individually Measured for Specific Impairment	5,087	4,862	'
Recorded Investment	2,866	690	'
Unpaid Principal Balance	2,885	1,994	'
Related Allowance	343	113	'
Impaired Financing Receivable, Average Recorded Investment	5,636	8,978	15,578
Impaired Financing Receivable, Interest Income, Accrual Method	19	9	511
Unsecured Loans [Member]	'	'	'
Recorded Investment of Loans Collectively Measured for Contingency Provision	72,569	45,251	'
Recorded Investment of Loans Individually Measured for Specific Impairment	35	92	'
Recorded Investment	35	92	'
Unpaid Principal Balance	35	92	'
Related Allowance	35	92	'
Impaired Financing Receivable, Average Recorded Investment	61	113	138
Impaired Financing Receivable, Interest Income, Accrual Method	3	6	0
Impaired Loans Without Recorded Allowance [Member]	'	'	'
Recorded Investment	18,190	30,256	'
Unpaid Principal Balance	26,223	44,410	'
Impaired Loans With Recorded Allowance [Member]	'	'	'
Recorded Investment	8,199	4,405	'
Unpaid Principal Balance	8,289	5,787	'
Related Allowance	1,690	1,395	'
Impaired Loans Without Recorded Allowance [Member]	'	'	'
Recorded Investment	144	127	'
Unpaid Principal Balance	210	127	'
Impaired Loans Without Recorded Allowance [Member] \| Income Property Multifamily Construction [Member]	'	'	'
Recorded Investment	0	0	'
Unpaid Principal Balance	0	0	'
Impaired Loans Without Recorded Allowance [Member] \| Land And Acquisition [Member]	'	'	'
Recorded Investment	1,831	2,819	'
Unpaid Principal Balance	2,587	4,813	'
Impaired Loans Without Recorded Allowance [Member] \| Residential Construction [Member]	'	'	'
Recorded Investment	0	1,957	'
Unpaid Principal Balance	0	2,570	'
Impaired Loans Without Recorded Allowance [Member] \| Commercial Land [Member]	'	'	'
Recorded Investment	115	2,655	'
Unpaid Principal Balance	398	5,727	'
Impaired Loans Without Recorded Allowance [Member] \| Income Property Multifamily [Member]	'	'	'
Recorded Investment	5,495	5,486	'
Unpaid Principal Balance	7,885	7,860	'
Impaired Loans Without Recorded Allowance [Member] \| Owner Occupied [Member]	'	'	'
Recorded Investment	7,206	11,296	'
Unpaid Principal Balance	10,464	14,642	'
Impaired Loans Without Recorded Allowance [Member] \| Owner Occupied Construction [Member]	'	'	'
Recorded Investment	0	0	'
Unpaid Principal Balance	0	0	'
Impaired Loans Without Recorded Allowance [Member] \| One-to-Four Family Residential [Member]	'	'	'
Recorded Investment	1,178	1,744	'
Unpaid Principal Balance	2,119	1,902	'
Impaired Loans Without Recorded Allowance [Member] \| Secured Loans [Member]	'	'	'
Recorded Investment	2,221	4,172	'
Unpaid Principal Balance	2,560	6,769	'
Impaired Loans Without Recorded Allowance [Member] \| Unsecured Loans [Member]	'	'	'
Recorded Investment	0	0	'
Unpaid Principal Balance	$0	$0	'

Noncovered_Loans_Noncovered_Lo

Noncovered Loans Noncovered Loans (Analysis of Troubled Debt Restructurings) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	contract	contract	contract
Financing Receivable, Modifications [Line Items]	'	'	'
Financing Receivable Modifications Additional Commitment To Lend	$0	$236	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0
Noncovered Loans [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing Receivable, Modifications, Number of Contracts	12	2	10
Pre-Modification Outstanding Recorded Investment	1,968	4,474	2,344
Post-Modification Outstanding Recorded Investment	1,968	2,844	2,344
Noncovered Loans [Member] \| Secured Loans [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing Receivable, Modifications, Number of Contracts	2	1	6
Pre-Modification Outstanding Recorded Investment	190	195	659
Post-Modification Outstanding Recorded Investment	190	194	659
Noncovered Loans [Member] \| One-to-Four Family Residential [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing Receivable, Modifications, Number of Contracts	1	0	1
Pre-Modification Outstanding Recorded Investment	113	0	369
Post-Modification Outstanding Recorded Investment	113	0	369
Noncovered Loans [Member] \| Commercial Land [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing Receivable, Modifications, Number of Contracts	1	0	0
Pre-Modification Outstanding Recorded Investment	137	0	0
Post-Modification Outstanding Recorded Investment	137	0	0
Noncovered Loans [Member] \| Income Property Multifamily [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing Receivable, Modifications, Number of Contracts	4	1	2
Pre-Modification Outstanding Recorded Investment	1,186	4,279	1,280
Post-Modification Outstanding Recorded Investment	1,186	2,650	1,280
Noncovered Loans [Member] \| Owner Occupied [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing Receivable, Modifications, Number of Contracts	1	0	0
Pre-Modification Outstanding Recorded Investment	172	0	0
Post-Modification Outstanding Recorded Investment	172	0	0
Noncovered Loans [Member] \| Land And Acquisition [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing Receivable, Modifications, Number of Contracts	1	0	0
Pre-Modification Outstanding Recorded Investment	117	0	0
Post-Modification Outstanding Recorded Investment	117	0	0
Noncovered Loans [Member] \| Residential Construction [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing Receivable, Modifications, Number of Contracts	0	0	1
Pre-Modification Outstanding Recorded Investment	0	0	36
Post-Modification Outstanding Recorded Investment	0	0	36
Noncovered Loans [Member] \| Consumer Portfolio Segment [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Financing Receivable, Modifications, Number of Contracts	2	0	0
Pre-Modification Outstanding Recorded Investment	53	0	0
Post-Modification Outstanding Recorded Investment	$53	$0	0

Allowance_for_Noncovered_Loan_2

Allowance for Noncovered Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Narrative) (Details) (Maximum [Member])	12 Months Ended
	Dec. 31, 2013
Maximum [Member]	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'
Percentage of unallocated loan amount	5.00%

Allowance_for_Noncovered_Loan_3

Allowance for Noncovered Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Allowance for Noncovered Loan and Lease Losses) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Provision (recapture) for loan and lease losses	($101)	$39,367	$5,752
Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	52,244	53,041	60,993
Charge-offs	-10,088	-20,429	-20,931
Recoveries	6,964	6,157	5,579
Provision (recapture) for loan and lease losses	3,160	13,475	7,400
Balance at the end of year	52,280	52,244	53,041
Specific Reserve	1,690	1,395	1,484
General Allocation	50,590	50,849	51,557
Consumer Portfolio Segment [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	2,437	2,719	2,120
Charge-offs	-2,242	-2,534	-3,918
Recoveries	552	1,171	351
Provision (recapture) for loan and lease losses	1,800	1,081	4,166
Balance at the end of year	2,547	2,437	2,719
Specific Reserve	4	0	30
General Allocation	2,543	2,437	2,689
Unallocated Financing Receivables [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	1,011	694	3,283
Charge-offs	0	0	0
Recoveries	0	0	0
Provision (recapture) for loan and lease losses	644	317	-2,589
Balance at the end of year	1,655	1,011	694
Specific Reserve	0	0	0
General Allocation	1,655	1,011	694
Secured Loans [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	27,270	24,745	21,811
Charge-offs	-4,148	-10,029	-7,270
Recoveries	1,512	1,354	1,154
Provision (recapture) for loan and lease losses	6,393	11,200	9,050
Balance at the end of year	31,027	27,270	24,745
Specific Reserve	343	113	954
General Allocation	30,684	27,157	23,791
Unsecured Loans [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	753	689	738
Charge-offs	-794	-144	-639
Recoveries	932	194	1,444
Provision (recapture) for loan and lease losses	-195	14	-854
Balance at the end of year	696	753	689
Specific Reserve	35	92	97
General Allocation	661	661	592
One-to-Four Family Residential [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	694	654	1,100
Charge-offs	-228	-549	-717
Recoveries	270	285	80
Provision (recapture) for loan and lease losses	516	304	191
Balance at the end of year	1,252	694	654
Specific Reserve	138	112	96
General Allocation	1,114	582	558
Commercial Land [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	460	488	634
Charge-offs	-20	-526	-660
Recoveries	169	63	12
Provision (recapture) for loan and lease losses	-120	435	502
Balance at the end of year	489	460	488
Specific Reserve	0	0	0
General Allocation	489	460	488
Income Property Multifamily [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	11,033	9,551	15,210
Charge-offs	-1,405	-4,030	-1,407
Recoveries	489	905	414
Provision (recapture) for loan and lease losses	-883	4,607	-4,666
Balance at the end of year	9,234	11,033	9,551
Specific Reserve	26	1,040	63
General Allocation	9,208	9,993	9,488
Owner Occupied [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	6,362	9,606	9,692
Charge-offs	-1,118	-918	-1,620
Recoveries	375	631	33
Provision (recapture) for loan and lease losses	-2,014	-2,957	1,501
Balance at the end of year	3,605	6,362	9,606
Specific Reserve	1,073	38	185
General Allocation	2,532	6,324	9,421
Land And Acquisition [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	1,171	2,331	3,769
Charge-offs	-32	-989	-1,419
Recoveries	2,553	1,059	1,978
Provision (recapture) for loan and lease losses	-3,082	-1,230	-1,997
Balance at the end of year	610	1,171	2,331
Specific Reserve	71	0	0
General Allocation	539	1,171	2,331
Residential Construction [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	635	864	2,292
Charge-offs	-101	-617	-1,068
Recoveries	112	429	113
Provision (recapture) for loan and lease losses	176	-41	-473
Balance at the end of year	822	635	864
Specific Reserve	0	0	59
General Allocation	822	635	805
Income Property Multifamily Construction [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	316	665	274
Charge-offs	0	-93	-2,213
Recoveries	0	66	0
Provision (recapture) for loan and lease losses	-31	-322	2,604
Balance at the end of year	285	316	665
Specific Reserve	0	0	0
General Allocation	285	316	665
Owner Occupied Construction [Member] \| Noncovered Loans [Member]	'	'	'
Allowance for Loan and Lease Losses [Roll Forward]	'	'	'
Balance at beginning of year	102	35	70
Charge-offs	0	0	0
Recoveries	0	0	0
Provision (recapture) for loan and lease losses	-44	67	-35
Balance at the end of year	58	102	35
Specific Reserve	0	0	0
General Allocation	$58	$102	$35

Allowance_for_Noncovered_Loan_4

Allowance for Noncovered Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Changes in the Allowance for Unfunded Commitments and Letters of Credit) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit	'	'	'
Beginning balance	$1,915	$1,535	$1,165
Net changes in the allowance for unfunded commitments and letters of credit	590	380	370
Ending balance	$2,505	$1,915	$1,535

Allowance_for_Noncovered_Loan_5

Allowance for Noncovered Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Analysis of Credit Quality of Noncovered Loan Portfolio) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans, net	$4,444,842	$2,864,803	'	'
Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	4,219,451	2,525,710	'	'
Loans and Leases Receivable, Allowance	52,280	52,244	53,041	60,993
Loans, net	4,167,171	2,473,466	'	'
Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	4,027,764	2,336,039	'	'
Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	53,231	37,758	'	'
Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	137,989	151,913	'	'
Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	467	0	'	'
Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Secured Loans [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,483,647	1,106,551	'	'
Loans and Leases Receivable, Allowance	31,027	27,270	24,745	21,811
Secured Loans [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,372,038	1,011,722	'	'
Secured Loans [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	43,309	29,222	'	'
Secured Loans [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	68,300	65,607	'	'
Secured Loans [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Secured Loans [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Income Property Multifamily Construction [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	86,521	28,342	'	'
Loans and Leases Receivable, Allowance	285	316	665	274
Income Property Multifamily Construction [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	86,206	28,342	'	'
Income Property Multifamily Construction [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Income Property Multifamily Construction [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	315	0	'	'
Income Property Multifamily Construction [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Income Property Multifamily Construction [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied Construction [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	38,916	36,211	'	'
Loans and Leases Receivable, Allowance	58	102	35	70
Owner Occupied Construction [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	38,916	36,211	'	'
Owner Occupied Construction [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied Construction [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied Construction [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied Construction [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Consumer Portfolio Segment [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	328,334	157,599	'	'
Loans and Leases Receivable, Allowance	2,547	2,437	2,719	2,120
Consumer Portfolio Segment [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	321,348	151,049	'	'
Consumer Portfolio Segment [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	331	75	'	'
Consumer Portfolio Segment [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	6,188	6,475	'	'
Consumer Portfolio Segment [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	467	0	'	'
Consumer Portfolio Segment [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Unsecured Loans [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	72,604	45,343	'	'
Loans and Leases Receivable, Allowance	696	753	689	738
Unsecured Loans [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	72,226	44,788	'	'
Unsecured Loans [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	199	26	'	'
Unsecured Loans [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	179	529	'	'
Unsecured Loans [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Unsecured Loans [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
One-to-Four Family Residential [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	105,892	44,192	'	'
Loans and Leases Receivable, Allowance	1,252	694	654	1,100
One-to-Four Family Residential [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	98,626	40,346	'	'
One-to-Four Family Residential [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,567	406	'	'
One-to-Four Family Residential [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	5,699	3,440	'	'
One-to-Four Family Residential [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
One-to-Four Family Residential [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Commercial Land [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	142,834	47,327	'	'
Loans and Leases Receivable, Allowance	489	460	488	634
Commercial Land [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	137,850	43,401	'	'
Commercial Land [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Commercial Land [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	4,984	3,926	'	'
Commercial Land [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Commercial Land [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Income Property Multifamily [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,146,432	614,812	'	'
Loans and Leases Receivable, Allowance	9,234	11,033	9,551	15,210
Income Property Multifamily [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,108,033	581,671	'	'
Income Property Multifamily [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	5,473	3,688	'	'
Income Property Multifamily [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	32,926	29,453	'	'
Income Property Multifamily [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Income Property Multifamily [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	760,609	395,173	'	'
Loans and Leases Receivable, Allowance	3,605	6,362	9,606	9,692
Owner Occupied [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	748,725	357,063	'	'
Owner Occupied [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	1,848	'	'
Owner Occupied [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	11,884	36,262	'	'
Owner Occupied [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Land And Acquisition [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	11,670	18,496	'	'
Loans and Leases Receivable, Allowance	610	1,171	2,331	3,769
Land And Acquisition [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	7,526	12,741	'	'
Land And Acquisition [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	1,351	'	'
Land And Acquisition [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	4,144	4,404	'	'
Land And Acquisition [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Land And Acquisition [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Residential Construction [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	41,992	31,664	'	'
Loans and Leases Receivable, Allowance	822	635	864	2,292
Residential Construction [Member] \| Pass [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	36,270	28,705	'	'
Residential Construction [Member] \| Special Mention [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	2,352	1,142	'	'
Residential Construction [Member] \| Substandard [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	3,370	1,817	'	'
Residential Construction [Member] \| Doubtful [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Residential Construction [Member] \| Unlikely to be Collected Financing Receivable [Member] \| Noncovered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	$0	$0	'	'

Noncovered_Other_Real_Estate_O2

Noncovered Other Real Estate Owned (Summary of Noncovered Other Real Estate Owned) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Real Estate Owned [Line Items]	'	'	'
Other Real Estate Owned, established through acquisition	$14,708	$0	'
Balance, beginning of period	26,987	'	'
Proceeds from sale of OREO property	-14,407	-15,689	-12,278
Net realized gain on sale of other real estate owned	10,539	11,634	9,310
Balance, end of period	35,927	26,987	'
Noncovered Loans [Member]	'	'	'
Other Real Estate Owned [Line Items]	'	'	'
Balance, beginning of period	10,676	22,893	'
Transfers in, net of write-downs ($90 and $205, respectively)	9,273	7,461	'
Other Real Estate Owned, additions and improvements	3,577	11	'
Writedowns Previously Recorded On Transfer In Of Real Estate Acquired Through Foreclosure	90	205	'
Additional OREO write-downs	-1,753	-4,816	'
Proceeds from sale of OREO property	-13,903	-15,689	'
Net realized gain on sale of other real estate owned	1,256	816	'
Balance, end of period	$23,834	$10,676	'

Covered_Assets_and_FDIC_Losssh3

Covered Assets and FDIC Loss-sharing Asset (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'
Payment Of Clawback If Losses Less Than Stated Levels, Period After Acquisition	'10 years 45 days	'	'
Amount of estimated clawback liability	$3,900,000	$3,600,000	'
Provision (recapture) for loan and lease losses	-101,000	39,367,000	5,752,000
Federal deposit insurance corporation loss-sharing indemnified assets	37,900,000	87,700,000	'
Federal deposit insurance corporation loss-sharing indemnified assets receivable	2,000,000	8,600,000	'
Maximum [Member]	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'
Loss Recovery Provision Effective Years	'10 years	'	'
Loss Sharing Agreement Effective Years	'10 years	'	'
Minimum [Member]	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'
Loss Recovery Provision Effective Years	'8 years	'	'
Loss Sharing Agreement Effective Years	'5 years	'	'
Covered Loans [Member]	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'
Percentage of loss shared by FDIC When Loss Share Thresholds Met	'	95.00%	'
Percentage of loss shared by FDIC	80.00%	'	'
FDIC Percentage Of Loss Recoveries	80.00%	95.00%	'
Provision (recapture) for loan and lease losses	-3,261,000	25,892,000	-1,648,000
Impairment expenses	1,700,000	'	'
Negative provision to adjust allowance for loss	$1,600,000	'	'

Covered_Assets_and_FDIC_Losssh4

Covered Assets and FDIC Loss-sharing Asset (Analysis and Allowance for Losses on Covered Loans) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'	'
Loans, net	$4,444,842	$2,864,803	'	'
Covered Loans [Member]	'	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	341,142	500,794	'	'
Allowance for losses	20,174	30,056	4,944	6,055
Valuation discount resulting from acquisition accounting	43,297	79,401	'	'
Loans, net	277,671	391,337	'	'
Covered Loans [Member] \| Commercial Portfolio Segment [Member]	'	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	72,870	125,373	'	'
Covered Loans [Member] \| Real Estate Portfolio Segment [Member]	'	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	212,521	290,256	'	'
Covered Loans [Member] \| Real Estate Construction Portfolio Segment [Member]	'	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	21,650	40,649	'	'
Covered Loans [Member] \| Consumer Portfolio Segment [Member]	'	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	34,101	44,516	'	'
Covered Loans [Member] \| One-to-Four Family Residential [Member]	'	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	41,642	57,150	'	'
Covered Loans [Member] \| One-to-Four Family Residential Construction [Member]	'	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	14,781	25,398	'	'
Covered Loans [Member] \| Commercial and Multifamily Residential [Member]	'	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	170,879	233,106	'	'
Covered Loans [Member] \| Commercial and Multifamily Residential Construction [Member]	'	'	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	$6,869	$15,251	'	'

Covered_Assets_and_FDIC_Losssh5

Covered Assets and FDIC Loss-sharing Asset (Changes in Accretable Yield for Acquired Loans) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Covered Assets And FDIC Loss Sharing Asset	'	'	'
Balance at beginning of period	$166,888	$259,669	$256,572
Additions resulting from acquisitions	0	0	59,810
Accretion	-51,816	-86,671	-90,378
Disposals	-6,898	-12,856	-31,483
Reclassifications from nonaccretable difference	-4,267	6,746	65,148
Balance at end of period	$103,907	$166,888	$259,669

Covered_Assets_and_FDIC_Losssh6

Covered Assets and FDIC Loss-sharing Asset Covered Assets and FDIC Loss-sharing Asset (Changes in Allowance for Covered Loans) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Provision (recapture) for loan and lease losses	($101)	$39,367	$5,752
Covered Loans [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Balance at beginning of year	30,056	4,944	6,055
Loans charged off	-13,853	-5,112	-1,488
Recoveries	-7,232	-4,332	-2,025
Provision (recapture) for loan and lease losses	-3,261	25,892	-1,648
Balance at the end of year	$20,174	$30,056	$4,944

Covered_Assets_and_FDIC_Losssh7

Covered Assets and FDIC Loss-sharing Asset (Covered OREO at Carrying Value) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'
Balance, end of period	$35,927	$26,987
Covered Loans [Member]	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'
Balance, beginning of period	16,311	28,126
Transfers in	8,827	14,166
Additional OREO write-downs	-282	-3,484
Proceeds from sale of OREO property	-22,046	-33,315
Gain on sale of OREO	9,283	10,818
Balance, end of period	$12,093	$16,311

Covered_Assets_and_FDIC_Losssh8

Covered Assets and FDIC Loss-sharing Asset (FDIC Loss-sharing Asset) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'
FDIC Loss-sharing Asset, Write-downs of Other Real Estate	$364	$5,190
FDIC Loss-sharing Asset [Member]	'	'
Covered Assets And FDIC Loss Sharing Asset [Line Items]	'	'
Balance at beginning of period	96,354	175,071
Cash received from the FDIC	-9,246	-54,649
FDIC reimbursable losses, net	-2,245	399
Amortization, net	-36,729	-42,940
Impairment	-2,609	20,714
Sale of other real estate	-6,177	-7,789
Other	134	358
Balance at end of period	$39,846	$96,354

Covered_Assets_and_FDIC_Losssh9

Covered Assets and FDIC Loss-sharing Asset Coverd Assets Credit Quality Indicators (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Net Reported Amount	$4,444,842	$2,864,803	'	'
Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	341,142	500,794	'	'
Valuation discount resulting from acquisition accounting	43,297	79,401	'	'
Loans and Leases Receivable, Allowance	20,174	30,056	4,944	6,055
Loans and Leases Receivable, Net Reported Amount	277,671	391,337	'	'
Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	264,008	356,520	'	'
Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	12,118	11,003	'	'
Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	64,989	133,271	'	'
Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	27	0	'	'
Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Real Estate Portfolio Segment [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	212,521	290,256	'	'
Real Estate Construction Portfolio Segment [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	21,650	40,649	'	'
Consumer Portfolio Segment [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	34,101	44,516	'	'
Consumer Portfolio Segment [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	30,722	38,973	'	'
Consumer Portfolio Segment [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	33	381	'	'
Consumer Portfolio Segment [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	3,319	5,162	'	'
Consumer Portfolio Segment [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	27	0	'	'
Consumer Portfolio Segment [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Secured Loans [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	69,650	118,594	'	'
Secured Loans [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	48,510	71,621	'	'
Secured Loans [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	2,849	1,823	'	'
Secured Loans [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	18,291	45,150	'	'
Secured Loans [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Secured Loans [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Unsecured Loans [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	3,220	6,779	'	'
Unsecured Loans [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	2,732	4,988	'	'
Unsecured Loans [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	396	0	'	'
Unsecured Loans [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	92	1,791	'	'
Unsecured Loans [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Unsecured Loans [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
One-to-Four Family Residential [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	41,642	57,150	'	'
One-to-Four Family Residential [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	35,066	44,782	'	'
One-to-Four Family Residential [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,842	1,344	'	'
One-to-Four Family Residential [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	4,734	11,024	'	'
One-to-Four Family Residential [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
One-to-Four Family Residential [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Commercial Land [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	18,565	26,628	'	'
Commercial Land [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	10,778	16,336	'	'
Commercial Land [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	198	0	'	'
Commercial Land [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	7,589	10,292	'	'
Commercial Land [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Commercial Land [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Income Property Multifamily [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	70,592	105,384	'	'
Income Property Multifamily [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	55,985	81,205	'	'
Income Property Multifamily [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	3,950	864	'	'
Income Property Multifamily [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	10,657	23,315	'	'
Income Property Multifamily [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Income Property Multifamily [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	81,722	101,094	'	'
Owner Occupied [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	67,653	82,222	'	'
Owner Occupied [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	111	3,318	'	'
Owner Occupied [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	13,958	15,554	'	'
Owner Occupied [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Land And Acquisition [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	9,349	13,833	'	'
Land And Acquisition [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	4,674	4,817	'	'
Land And Acquisition [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	2,739	3,273	'	'
Land And Acquisition [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,936	5,743	'	'
Land And Acquisition [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Land And Acquisition [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Residential Construction [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	5,432	11,565	'	'
Residential Construction [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	3,008	6,050	'	'
Residential Construction [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Residential Construction [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	2,424	5,515	'	'
Residential Construction [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Residential Construction [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Income Property Multifamily Construction [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	5,515	12,320	'	'
Income Property Multifamily Construction [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	3,806	4,419	'	'
Income Property Multifamily Construction [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Income Property Multifamily Construction [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,709	7,901	'	'
Income Property Multifamily Construction [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Income Property Multifamily Construction [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied Construction [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,354	2,931	'	'
Owner Occupied Construction [Member] \| Covered Loans [Member] \| Pass [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,074	1,107	'	'
Owner Occupied Construction [Member] \| Covered Loans [Member] \| Special Mention [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied Construction [Member] \| Covered Loans [Member] \| Substandard [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	280	1,824	'	'
Owner Occupied Construction [Member] \| Covered Loans [Member] \| Doubtful [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Owner Occupied Construction [Member] \| Covered Loans [Member] \| Unlikely to be Collected Financing Receivable [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0	'	'
Commercial Portfolio Segment [Member] \| Covered Loans [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Loans and Leases Receivable, Gross, Carrying Amount	$72,870	$125,373	'	'

Premises_and_Equipment_Details

Premises and Equipment (Details) (USD $)	12 Months Ended
Premises and Equipment (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	$205,625,000	$164,863,000	'
Less accumulated depreciation and amortization	-50,893,000	-46,155,000	'
Total	154,732,000	118,708,000	'
Depreciation and amortization expense	10,200,000	6,300,000	5,700,000
Change in estimate, impact to net income	886,000	'	'
Change in estimate, impact to earnings per share	0.02	'	'
Land [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	48,992,000	39,441,000	'
Building [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	94,878,000	84,407,000	'
Leasehold Improvements [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	14,254,000	2,684,000	'
Furniture and Fixtures [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	29,465,000	24,110,000	'
Vehicles [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	546,000	438,000	'
Computer Software, Intangible Asset [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	$17,490,000	$13,783,000	'

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill and Intangible Assets [Line Items]	'	'	'
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$919	$0	$0
Intangible Assets, Net (Excluding Goodwill)	25,852	15,721	20,166
Goodwill and Intangible Assets [Roll Forward]	'	'	'
Total goodwill, beginning of period	115,554	115,554	109,639
Established through acquisitions	228,398	0	5,915
Total goodwill, end of period	343,952	115,554	115,554
Core deposit intangible, net, beginning of period	15,721	'	'
CDI current period amortization	-6,045	-4,445	-4,319
Total core deposit intangible, end of period	25,852	15,721	'
Total goodwill and intangible assets, end of period	369,804	131,275	135,720
Core Deposits [Member]	'	'	'
Goodwill and Intangible Assets [Roll Forward]	'	'	'
Gross core deposit intangible balance, beginning of period	32,441	32,441	26,652
Accumulated amortization, beginning of period	-16,720	-12,275	-7,956
Core deposit intangible, net, beginning of period	15,721	20,166	18,696
Established through acquisitions	15,257	0	5,789
CDI current period amortization	-6,045	-4,445	-4,319
Total core deposit intangible, end of period	$24,933	$15,721	$20,166
Estimated life of CDI, in years	'10 years	'	'

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets (Summary of Estimated Future Amortization Expense of Core Deposit Intangibles) (Details) (Core Deposits [Member], USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2013
Core Deposits [Member]	'
Future Amortization Expense For Core Deposit Intangibles	'
2014	$5,963
2015	4,934
2016	4,195
2017	3,361
2018	$2,500

Deposits_Details

Deposits (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deposits [Abstract]	'	'
Brokered money market accounts	$41,765	$0
Demand and other noninterest-bearing	2,171,703	1,321,171
Interest-bearing demand	1,170,006	870,821
Money market	1,569,261	1,043,459
Savings	496,444	314,371
Certificates of deposit less than $100,000	288,943	252,544
Total core deposits	5,696,357	3,802,366
Certificates of deposit greater than $100,000	201,498	212,924
Certificates of deposit insured by CDARSB.	19,488	26,720
Subtotal	5,959,108	4,042,010
Deposits, Valuation Adjustment From Acquisition Accounting	367	75
Total deposits	5,959,475	4,042,085
Deposit Liabilities Reclassified as Loans Receivable	1,100	528
Time Deposits, Fiscal Year Maturity [Abstract]	'	'
2014	172,422	'
2015	28,556	'
2016	11,834	'
2017	4,810	'
2018	2,162	'
Thereafter	106	'
Total	$219,890	'

Federal_Home_Loan_Bank_and_Fed2

Federal Home Loan Bank and Federal Reserve Bank Borrowings (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
FHLB Fixed Rate Advances, Maturities Summary [Abstract]	'	'	'
FHLB Fixed Rate Advances, Weighted Average Interest Rate, Within 1 year	0.23%	'	'
FHLB Fixed Rate Advances, Amount, Within 1 year	$30,000	'	'
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, One To Five Years From Balance Sheet Date	5.66%	'	'
FHLB Fixed Rate Advances, Over 1 through 5 years	1,000	'	'
FHLB Fixed Rate Advances, Weighted Average Interest Rate, Due after 10 years	5.37%	'	'
FHLB Fixed Rate Advances, Due after 10 years	5,000	'	'
FHLB Fixed Rate Advances, Total Amount before valuation adjustment	36,000	'	'
Valuation adjustment from acquisition accounting	606	'	'
FHLB Fixed Rate Advances, Total Amount	36,606	'	'
Federal Home Loan Bank, Advances, Activity for Year [Abstract]	'	'	'
FHLB Advances	36,606	6,644	119,009
Average balance during the year	51,030	100,337	120,419
Maximum month-end balance during the year	190,631	118,967	127,426
Weighted average rate during the year	1.12%	2.79%	2.76%
Weighted average rate at December 31	1.09%	5.42%	2.81%
FHLB Advances, Collateral Pledged	1,075,389	443,419	'
FHLB Borrowing Capacity	1,037,159	435,189	'
Federal Reserve Bank, Advances, Collateral Pledged	85,452	59,456	'
Federal Reserve Bank borrowing capacity	85,452	59,456	'
Securities Investment [Member]	'	'	'
Federal Home Loan Bank, Advances, Activity for Year [Abstract]	'	'	'
Federal Reserve Bank, Advances, Collateral Pledged	40,210	45,641	'
Loans Receivable [Member]	'	'	'
Federal Home Loan Bank, Advances, Activity for Year [Abstract]	'	'	'
FHLB Advances, Collateral Pledged	1,075,389	443,419	'
Commercial Loan [Member]	'	'	'
Federal Home Loan Bank, Advances, Activity for Year [Abstract]	'	'	'
Federal Reserve Bank, Advances, Collateral Pledged	$45,242	$13,815	'

Other_Borrowings_Details

Other Borrowings (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Assets Sold under Agreements to Repurchase [Line Items]	'	'
Available-for-sale Securities Pledged as Collateral	$362,787,000	$374,730,000
Available-for-sale Securities [Member]	'	'
Assets Sold under Agreements to Repurchase [Line Items]	'	'
Assets Sold under Agreements to Repurchase, Carrying Amounts	'	25,000,000
Assets Sold under Agreements to Repurchase, Interest Rate	'	1.88%
Repurchase Agreements [Member]	'	'
Assets Sold under Agreements to Repurchase [Line Items]	'	'
Available-for-sale Securities Pledged as Collateral	$28,200,000	'

Derivatives_and_Balance_Sheet_2

Derivatives and Balance Sheet Offsetting (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
		Not Designated as Hedging Instrument [Member]	Not Designated as Hedging Instrument [Member]	Not Designated as Hedging Instrument [Member]	Not Designated as Hedging Instrument [Member]	Not Designated as Hedging Instrument [Member]	Not Designated as Hedging Instrument [Member]
		Interest Rate Contracts [Member]	Interest Rate Contracts [Member]	Other Assets [Member]	Other Assets [Member]	Other Liabilities [Member]	Other Liabilities [Member]
				Interest Rate Contracts [Member]	Interest Rate Contracts [Member]	Interest Rate Contracts [Member]	Interest Rate Contracts [Member]
Derivative [Line Items]	'	'	'	'	'	'	'
Derivative, Notional Amount	'	$179,500,000	$177,000,000	'	'	'	'
Derivative Asset, Fair Value, Gross Asset	'	'	'	9,044,000	14,921,000	'	'
Derivative Liability, Fair Value, Gross Liability	'	'	'	'	'	9,044,000	14,921,000
Gain (Loss) on Derivative Instruments, Net, Pretax	$0	'	'	'	'	'	'

Derivatives_and_Balance_Sheet_3

Derivatives and Balance Sheet Offsetting Balance Sheet Offsetting (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Balance Sheet Offsetting [Line Items]	'	'
Repurchase agreements, amounts offset in balance sheet	$0	$0
repurchase agreements, net amount presented in statement of financial position	25,000,000	25,000,000
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	-25,000,000	-25,000,000
securities sold under agreements to repurchase, amount not offset	0	0
Interest Rate Contracts [Member]	'	'
Balance Sheet Offsetting [Line Items]	'	'
Derivative Assets, Gross Amounts Offset in the Balance Sheets	0	0
Derivative Asset	9,044,000	14,921,000
Derivative, Collateral, Obligation to Return Securities	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	9,044	14,921
Derivative Liability, Gross Amounts Offset in Balance Sheets	0	0
Derivative Liability	9,044,000	14,921,000
Derivative, Collateral, Right to Reclaim Securities	-9,044,000	-14,921,000
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	0	0
Not Designated as Hedging Instrument [Member] \| Other Assets [Member] \| Interest Rate Contracts [Member]	'	'
Balance Sheet Offsetting [Line Items]	'	'
Derivative Asset, Fair Value, Gross Asset	9,044,000	14,921,000
Not Designated as Hedging Instrument [Member] \| Other Liabilities [Member] \| Interest Rate Contracts [Member]	'	'
Balance Sheet Offsetting [Line Items]	'	'
Derivative Liability, Fair Value, Gross Liability	9,044,000	14,921,000
Available-for-sale Securities [Member]	'	'
Balance Sheet Offsetting [Line Items]	'	'
Assets Sold under Agreements to Repurchase, Carrying Amount	$25,000,000	$25,000,000

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	period	Dec. 31, 2012	Dec. 31, 2011
Employee Benefit [Line Items]	'	'	'
Defined Benefit Plan, Business Combinations and Acquisitions, Benefit Obligation	$3,398,000	$0	'
Number of Look-back Period Under Employee Stock Purchase Plan	2	'	'
Look-back Period Under Employee Stock Purchase Plan	'6 months	'	'
Discount On Common Stock Under Employee Stock Purchase Plan, Percent	10.00%	'	'
Stock Issued During Period, Shares, Employee Stock Purchase Plans	32,598	39,393	39,989
Stock Issued During Period, Value, Employee Stock Purchase Plan	686,000	725,000	690,000
Shares Available For Purchase Under Employee Stock Purchase Plan	575,912	'	'
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]	'	'	'
Balance at beginning of year	11,616,000	11,237,000	'
Change in actuarial loss	2,212,000	-80,000	'
Benefit expense	1,880,000	1,017,000	'
Benefit payments	-2,683,000	-558,000	'
Balance at end of year	16,423,000	11,616,000	11,237,000
Defined Contribution Pension [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Deferred Compensation Arrangement with Individual, Service Period	'6 months	'	'
Deferred Compensation Arrangement with Individual, Contribution To Plan By Employee, Percent Of Eligible Compensation	75.00%	'	'
Deferred Compensation Arrangement with Individual, Contribution Requirements, Matching Percent	50.00%	'	'
Deferred Compensation Arrangement with Individual, Employer Contribution	1,900,000	1,400,000	1,200,000
Defined Contribution Pension [Member] \| Minimum [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Deferred Compensation Arrangement with Individual, Eligible Age	18	'	'
Defined Contribution Pension [Member] \| Maximum [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Deferred Compensation Arrangement with Individual, Contribution Requirements, Percent Of Each Employee Compensation	3.00%	'	'
Deferred Profit Sharing [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Deferred Compensation Arrangement with Individual, Service Period	'6 months	'	'
Deferred Compensation Arrangement with Individual, Contribution To Plan By Employee, Percent Of Eligible Compensation	75.00%	'	'
Deferred Compensation Arrangement with Individual, Contribution Requirements, Matching Percent	50.00%	'	'
Deferred Compensation Arrangement with Individual, Employer Contribution	4,000,000	2,900,000	2,600,000
Deferred Profit Sharing [Member] \| Minimum [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Deferred Compensation Arrangement with Individual, Eligible Age	18	'	'
Deferred Profit Sharing [Member] \| Maximum [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Deferred Compensation Arrangement with Individual, Contribution Requirements, Percent Of Each Employee Compensation	3.00%	'	'
ESP Plan [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date	90.00%	'	'
Unit Plans [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Deferred Compensation Arrangement with Individual, Recorded Liability	4,700,000	4,700,000	'
Deferred Compensation Arrangement with Individual, Compensation Expense	458,000	677,000	655,000
Unit Plans [Member] \| Minimum [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Deferred Compensation Arrangement with Individual, Vesting Period	'4 years	'	'
Deferred Compensation Arrangement with Individual, Benefit Period	'5 years	'	'
Unit Plans [Member] \| Maximum [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Deferred Compensation Arrangement with Individual, Vesting Period	'10 years	'	'
Deferred Compensation Arrangement with Individual, Benefit Period	'10 years	'	'
SERP [Member]	'	'	'
Employee Benefit [Line Items]	'	'	'
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	5.10%	'	'
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Normal Retirement Age	65	'	'
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Annual Cost Of Living Benefit Adjustment	2.00%	'	'
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]	'	'	'
2014	1,702,000	'	'
2015	975,000	'	'
2016	994,000	'	'
2017	1,088,000	'	'
2018	1,355,000	'	'
2019 through 2023	8,852,000	'	'
Total	$14,966,000	'	'

Commitments_and_Contingent_Lia2

Commitments and Contingent Liabilities (Details) (USD $)	12 Months Ended
Commitments and Contingent Liabilities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Minimum future rental payments:	'	'	'	'
2014	'	$8,033,000	'	'
2015	'	6,787,000	'	'
2016	'	4,847,000	'	'
2017	'	3,642,000	'	'
2018	'	3,111,000	'	'
Thereafter	'	13,105,000	'	'
Total minimum payments	'	39,525,000	'	'
Operating Leases, Rent Expense, Sublease Rentals	'	673,000	639,000	655,000
Operating Leases, Rent Expense, Net	'	8,500,000	4,500,000	4,600,000
Restructuring and Related Cost, Expected Cost Remaining	1,200,000	'	'	'
Commitments to Extend Credit [Member]	'	'	'	'
Minimum future rental payments:	'	'	'	'
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	'	1,370,000,000	888,500,000	'
Standby Letters of Credit [Member]	'	'	'	'
Minimum future rental payments:	'	'	'	'
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	'	36,700,000	19,500,000	'
Commercial Letter of Credit and other off-balance sheet liabilities [Member]	'	'	'	'
Minimum future rental payments:	'	'	'	'
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	'	2,700,000	46,000	'
Branch consolidation [Member]	'	'	'	'
Minimum future rental payments:	'	'	'	'
Increase (Decrease) in Restructuring Reserve	'	1,400,000	'	'
Restructuring and Related Cost, Accelerated Depreciation	'	1,400,000	'	'
Restructuring and Related Cost, Cost Incurred to Date	'	2,800,000	'	'
Restructuring and Related Cost, Expected Cost	'	$4,000,000	'	'

Shareholders_Equity_Details

Shareholders' Equity (Details) (USD $)	0 Months Ended				12 Months Ended		0 Months Ended		12 Months Ended
	Oct. 24, 2013	Jul. 26, 2013	Apr. 25, 2013	Jan. 24, 2013	Dec. 31, 2013	Apr. 02, 2013	Jan. 23, 2014	Apr. 02, 2013	Dec. 31, 2013
	Oct. 24, 2013	Jul. 26, 2013	Apr. 25, 2013	Jan. 24, 2013	Dec. 31, 2013	Apr. 02, 2013	Dividend Declared [Member]	Series B Preferred Stock [Member]	Series B Preferred Stock [Member]
Class of Stock [Line Items]	'	'	'	'	'	'	'	'	'
Preferred Stock Converted Into Common Stock, Shares	'	'	'	'	102,363	'	'	'	'
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	'	'	'	'	'	2,214,639	'	'	'
Class of Warrant or Right, Exercise Price of Warrants or Rights	'	'	'	'	'	8.58	'	'	'
Warrants and Rights Outstanding	'	'	'	'	'	$19,000,000	'	'	'
Declared quarterly cash dividend	$0.11	$0.10	$0.10	$0.10	'	'	$0.12	'	'
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	'	'	'	'	2,000,000	'	'	'	'
Stock Repurchased During Period, Shares	'	'	'	'	0	'	'	'	'
Stock Issued During Period, Shares, New Issues	'	'	'	'	'	'	'	8,782	9,000
Stock Issued During Period, Value, New Issues	'	'	'	'	$276,181,000	'	'	'	$2,217,000

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Accumulated Other Comprehensive Income (Loss), Net of Tax	($12,044)	[1]	$20,149	[1]	'
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	-32,159	[1]	'		'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-34	[1],[2]	'		'
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	-32,193	[1]	-4,984		12,852
Accumulated Defined Benefit Plans Adjustment [Member]	'		'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-1,936	[1]	-769	[1]	'
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	-1,432	[1]	'		'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	265	[1],[2]	'		'
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	-1,167	[1]	'		'
Accumulated Net Unrealized Investment Gain (Loss) [Member]	'		'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-10,108	[1]	20,918	[1]	'
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	-30,727	[1]	'		'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-299	[1],[2]	'		'
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	($31,026)	[1]	'		'

[1]	(1) All amounts are net of tax. Amounts in parenthesis indicate debits.
[2]	(2) See following table for details about these reclassifications.

Fair_Value_Accounting_and_Meas2

Fair Value Accounting and Measurement (Financial Assets And Liabilities Accounted for Fair Value On Recurring Basis) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	$1,664,111	$1,001,665
Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	1,664,111	1,001,665
Other assets (Interest rate contracts)	9,044	14,921
Other liabilities (Interest rate contracts)	9,044	14,921
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	20,114	19,828
Other assets (Interest rate contracts)	0	0
Other liabilities (Interest rate contracts)	0	0
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	1,643,997	981,837
Other assets (Interest rate contracts)	9,044	14,921
Other liabilities (Interest rate contracts)	9,044	14,921
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	0	0
Other assets (Interest rate contracts)	0	0
Other liabilities (Interest rate contracts)	0	0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	948,408	572,369
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	0	0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	948,408	572,369
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	0	0
State and Municipal Securities [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	364,470	285,575
State and Municipal Securities [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	0	0
State and Municipal Securities [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	364,470	285,575
State and Municipal Securities [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	0	0
U.S. Government Agency [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	326,039	120,501
U.S. Government Agency [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	0	0
U.S. Government Agency [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	326,039	120,501
U.S. Government Agency [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	0	0
US Treasury Securities [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	20,114	19,828
US Treasury Securities [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	20,114	19,828
US Treasury Securities [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	0	0
US Treasury Securities [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	0	0
Other Securities [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	5,080	3,392
Other Securities [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	0	0
Other Securities [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	5,080	3,392
Other Securities [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale	$0	$0

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income Amounts reclassified from Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Gain on sale of investment securities, net	'	'	'	'	'	'	'	'	$462	$3,733	($2,816)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	27,884	20,010	22,005	17,111	18,804	16,535	16,266	12,100	87,010	63,705	65,942
Income Tax Expense (Benefit)	-7,911	-6,734	-7,414	-4,935	-5,342	-4,655	-4,367	-3,198	-26,994	-17,562	-17,905
Net income (loss)	19,973	13,276	14,591	12,176	13,462	11,880	11,899	8,902	60,016	46,143	48,037
Compensation and employee benefits	'	'	'	'	'	'	'	'	125,432	85,434	81,552
Reclassification out of Accumulated Other Comprehensive Income [Member] \| Accumulated Defined Benefit Plans Adjustment [Member]	'	'	'	'	'	'	'	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	'	'	'	'	'	'	'	'	-400	'	'
Income Tax Expense (Benefit)	'	'	'	'	'	'	'	'	135	'	'
Net income (loss)	'	'	'	'	'	'	'	'	-265	'	'
Compensation and employee benefits	'	'	'	'	'	'	'	'	-400	'	'
Reclassification out of Accumulated Other Comprehensive Income [Member] \| Accumulated Net Unrealized Investment Gain (Loss) [Member]	'	'	'	'	'	'	'	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Gain on sale of investment securities, net	'	'	'	'	'	'	'	'	462	'	'
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	'	'	'	'	'	'	'	'	462	'	'
Income Tax Expense (Benefit)	'	'	'	'	'	'	'	'	-163	'	'
Net income (loss)	'	'	'	'	'	'	'	'	$299	'	'

Fair_Value_Accounting_and_Meas3

Fair Value Accounting and Measurement (Financial Assets Accounted For Fair Value On Nonrecurring Basis) (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans	$8,973	$10,599
Non-Covered Other Real Estate Owned Fair Value	5,080	10,970
Other Real Estate Owned, Fair Value Disclosure	613	2,663
Other Personal Property Owned, Fair Value Disclosure	'	210
Assets, Fair Value Disclosure	14,666	24,442
Losses During Period	2,766	8,750
Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans	0	0
Non-Covered Other Real Estate Owned Fair Value	0	0
Other Real Estate Owned, Fair Value Disclosure	0	0
Other Personal Property Owned, Fair Value Disclosure	'	0
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans	0	0
Non-Covered Other Real Estate Owned Fair Value	0	0
Other Real Estate Owned, Fair Value Disclosure	0	0
Other Personal Property Owned, Fair Value Disclosure	'	0
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans	8,973	10,599
Non-Covered Other Real Estate Owned Fair Value	5,080	10,970
Other Real Estate Owned, Fair Value Disclosure	613	2,663
Other Personal Property Owned, Fair Value Disclosure	'	210
Assets, Fair Value Disclosure	14,666	24,442
Covered Loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Losses During Period	236	1,032
Impaired Loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Losses During Period	1,536	3,891
Other Personal Property Owned [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Losses During Period	'	39
Noncovered Loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Losses During Period	$994	$3,788

Fair_Value_Accounting_and_Meas4

Fair Value Accounting and Measurement (Quantitative Information About Level 3 Fair Value Measurements) (Details) (USD $)

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Inputs, Level 3 [Member]

Market Approach Valuation Technique [Member]

Noncovered Loans [Member]

Covered Loans [Member]

Fair Value, Measurements, Nonrecurring [Member]

Impaired Loans [Member]

Fair Value, Inputs, Level 3 [Member]

Market Approach Valuation Technique [Member]

Minimum [Member]

Maximum [Member]

Weighted Average [Member]

Fair Value, Measurements, Nonrecurring [Member]

Other Real Estate Owned [Member]

Fair Value, Inputs, Level 3 [Member]

Minimum [Member]

Maximum [Member]

Weighted Average [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value Inputs, Assets, Quantitative Information [Line Items]

Fair Value Inputs, Assets, Quantitative Information [Table Text Block]

The range and weighted-average of the significant unobservable inputs used to fair value our Level 3 nonrecurring assets during 2013 and 2012, along with the valuation techniques used, are shown in the following tables:

Fair value at

Valuation Technique

Unobservable Input

Range (Weighted Average) (1)

December 31, 2013

(dollars in thousands)

Impaired loans

8,973

Fair Market Value of Collateral

Adjustment to Appraisal Value

N/A (2)

Noncovered OREO

5,080

Fair Market Value of Collateral

Adjustment to Appraisal Value

N/A (2)

Covered OREO

613

Fair Market Value of Collateral

Adjustment to Appraisal Value

N/A (2)

(1) Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable and inventory).

(2) Quantitative disclosures are not provided for impaired loans, noncovered OREO and covered OREO because there were no adjustments made to the appraisal value during the current period.

Impaired loans

$8,973

$10,599

$8,973

$10,599

Other Real Estate Owned, Fair Value Disclosure

613

2,663

613

2,663

5,080

10,970

613

2,663

Other Personal Property Owned, Fair Value Disclosure

$210

Fair Value Inputs, Comparability Adjustments

Fair_Value_Accounting_and_Meas5

Fair Value Accounting and Measurement Fair Value Accounting and Measurement (Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets	'	'
Interest-earning deposits with banks	$14,531	$389,353
Securities available for sale	1,664,111	1,001,665
Reported Value Measurement [Member]	'	'
Assets	'	'
Cash and due from banks	165,030	124,573
Interest-earning deposits with banks	14,531	389,353
Securities available for sale	1,664,111	1,001,665
FHLB stock	32,529	21,819
Loans held for sale	735	2,563
Loans	4,444,842	2,864,803
FDIC loss-sharing asset	39,846	96,354
Interest rate contracts	9,044	14,921
Liabilities	'	'
Deposits	5,959,475	4,042,085
FHLB Advances	36,606	6,644
Repurchase agreements	25,000	25,000
Interest rate contracts	9,044	14,921
Estimate of Fair Value Measurement [Member]	'	'
Assets	'	'
Cash and due from banks	165,030	124,573
Interest-earning deposits with banks	14,531	389,353
Securities available for sale	1,664,111	1,001,665
FHLB stock	32,529	21,819
Loans held for sale	735	2,563
Loans	4,605,038	2,944,317
FDIC loss-sharing asset	11,248	26,543
Interest rate contracts	9,044	14,921
Liabilities	'	'
Deposits	5,958,747	4,043,221
FHLB Advances	35,080	5,894
Repurchase agreements	26,361	26,464
Interest rate contracts	9,044	14,921
Fair Value, Inputs, Level 2 [Member] \| Estimate of Fair Value Measurement [Member]	'	'
Assets	'	'
Cash and due from banks	0	0
Interest-earning deposits with banks	0	0
Securities available for sale	1,643,997	981,837
FHLB stock	32,529	21,819
Loans held for sale	735	2,563
Loans	0	0
FDIC loss-sharing asset	0	0
Interest rate contracts	9,044	14,921
Liabilities	'	'
Deposits	509,201	493,400
FHLB Advances	35,080	5,894
Repurchase agreements	26,361	26,464
Interest rate contracts	9,044	14,921
Fair Value, Inputs, Level 3 [Member] \| Estimate of Fair Value Measurement [Member]	'	'
Assets	'	'
Cash and due from banks	0	0
Interest-earning deposits with banks	0	0
Securities available for sale	0	0
FHLB stock	0	0
Loans held for sale	0	0
Loans	4,605,038	2,944,317
FDIC loss-sharing asset	11,248	26,543
Interest rate contracts	0	0
Liabilities	'	'
Deposits	0	0
FHLB Advances	0	0
Repurchase agreements	0	0
Interest rate contracts	0	0
Fair Value, Inputs, Level 1 [Member] \| Estimate of Fair Value Measurement [Member]	'	'
Assets	'	'
Cash and due from banks	165,030	124,573
Interest-earning deposits with banks	14,531	389,353
Securities available for sale	20,114	19,828
FHLB stock	0	0
Loans held for sale	0	0
Loans	0	0
FDIC loss-sharing asset	0	0
Interest rate contracts	0	0
Liabilities	'	'
Deposits	5,449,546	3,549,821
FHLB Advances	0	0
Repurchase agreements	0	0
Interest rate contracts	$0	$0

Fair_Value_Accounting_and_Meas6

Fair Value Accounting and Measurement Fair Value, quantitative inputs to Level 3 measurements (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

In Thousands, unless otherwise specified

Fair Value, Inputs, Level 3 [Member]

Noncovered Loans [Member]

Covered Loans [Member]

Minimum [Member]

Maximum [Member]

Weighted Average [Member]

Fair Value, Inputs, Level 3 [Member]

Impaired Loans [Member]

Other Real Estate Owned [Member]

Impaired Loans [Member]

Other Real Estate Owned [Member]

Impaired Loans [Member]

Other Real Estate Owned [Member]

Market Approach Valuation Technique [Member]

Fair Value, Inputs, Level 3 [Member]

Covered Loans [Member]

Fair Value, Inputs, Level 3 [Member]

Covered Loans [Member]

Fair Value, Inputs, Level 3 [Member]

Covered Loans [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]

Fair Value Inputs, Comparability Adjustments

Impaired loans

$8,973

$10,599

$8,973

$10,599

Other Real Estate Owned, Fair Value Disclosure

613

2,663

613

2,663

5,080

10,970

613

2,663

Other Personal Property Owned, Fair Value Disclosure

$210

Earnings_Per_Common_Share_Sche

Earnings Per Common Share (Schedule of Basic and Diluted Earnings Per Share) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, except Per Share data, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Earnings Per Share [Abstract]

Net income (loss)

$19,973

$13,276

$14,591

$12,176

$13,462

$11,880

$11,899

$8,902

$60,016

$46,143

$48,037

Earnings allocated to participating securities - preferred shares

Earnings allocated to participating securities - nonvested restricted shares

523

443

450

Weighted average common shares outstanding

47,993

39,260

39,103

Earnings (loss) basic (dollars per share)

$0.39

[1]

$0.26

[1]

$0.28

[1]

$0.31

[1]

$0.34

[1]

$0.30

[1]

$0.30

[1]

$0.22

[1]

$1.24

[1]

$1.16

[1]

$1.22

Earnings allocated to common shareholders, Diluted

$59,407

$45,700

$47,588

Weighted average number of common shares outstanding

47,993

39,260

39,103

Dilutive effect of equity awards and warrants

1,058

Weighted average diluted common shares outstanding

49,051

39,263

39,180

Earnings (loss) diluted (dollars per share)

$0.38

[1]

$0.25

[1]

$0.28

[1]

$0.31

[1]

$0.34

[1]

$0.30

[1]

$0.30

[1]

$0.22

[1]

$1.21

[1]

$1.16

[1]

$1.21

Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.

[1]

Due to averaging of shares, quarterly earnings per share may not add up to the totals reported for the full year.

ShareBased_Payments_Share_Awar

Share-Based Payments (Share Awards) (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'	'	'	'
Allocated Share-based Compensation Expense	$2.80	$1.60	$1.60	'
Share-based compensation, number authorized (in shares)	3,113,592	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	410,598	384,090	362,675	353,283
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$20.79	$19.54	$19.24	$21.14
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	203,441	180,841	133,350	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$20.78	$21.32	$19.45	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	-117,153	-118,511	-109,033	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$16.90	$21.65	$25.72	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	-59,780	-40,915	-14,925	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Grant Date Fair Value	$20.24	$18.60	$18.86	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	6.4	'	'	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	'2 years 3 months 17 days	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	$2.50	$2.50	$2.20	'

ShareBased_Payments_Share_Opti

Share-Based Payments (Share Options) (Details) (USD $)	12 Months Ended
Share-Based Payments (Share Options) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Allocated Share-based Compensation Expense	$2,800,000	$1,600,000	$1,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'	'
Balance at beginning of year (in shares)	25,952	'	'
Granted (in shares)	222,110	0	0
Forfeited (in shares)	-83,284	'	'
Expired (in shares)	-12,544	'	'
Exercised (in shares)	-36,037	'	'
Balance at end of year (in shares)	116,197	25,952	'
Total Exercisable Shares	116,197	'	'
Weighted Average Exercise Price at beginning of year	$20.13	'	'
Weighted Average Exercise Price, Granted	$64.11	'	'
Weighted Average Exercise Price, Forfeited	$69.27	'	'
Weighted Average Exercise Price, Expired	$81.78	'	'
Weighted Average Exercise Price, Exercised	$11.46	'	'
Weighted Average Exercise Price at end of year	$65.01	$20.13	'
Exercisable, Weighted Average Exercise Price	$65.01	'	'
Weighted Average Remaining Contractual Term	'2 years 9 months 19 days	'	'
Aggregate Intrinsic Value	550,000	'	'
Exercisable, Weighted Average Remaining Contractual Term	'2 years 9 months 19 days	'	'
Exercisable, Aggregate Intrinsic Value	550,000	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	410,000	5,000	65,000
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Abstract]	'	'	'
Number of Option Shares	116,197	'	'
Weighted Average Remaining Contractual Life	'2 years 9 months 7 days	'	'
Weighted Average Exercise Price of Option Shares	$65.01	'	'
Number of Exercisable Option Shares	116,197	'	'
Weighted Average Exercise Price of Exercisable Option Shares	$65.01	'	'
Stock-based compensation expense	$2,844,000	$1,622,000	$1,635,000
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range From 0.00 To 9.99 [Member]	'	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Abstract]	'	'	'
Range of Exercise Prices, Lower Limit	$0	'	'
Range of Exercise Prices, Upper Limit	$9.99	'	'
Number of Option Shares	29,602	'	'
Weighted Average Remaining Contractual Life	'5 years 0 months 2 days	'	'
Weighted Average Exercise Price of Option Shares	$9.91	'	'
Number of Exercisable Option Shares	29,602	'	'
Weighted Average Exercise Price of Exercisable Option Shares	$9.91	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range From 10.00 To 19.99 [Member]	'	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Abstract]	'	'	'
Range of Exercise Prices, Lower Limit	$10	'	'
Range of Exercise Prices, Upper Limit	$19.99	'	'
Number of Option Shares	2,879	'	'
Weighted Average Remaining Contractual Life	'1 year 0 months 1 day	'	'
Weighted Average Exercise Price of Option Shares	$17.36	'	'
Number of Exercisable Option Shares	2,879	'	'
Weighted Average Exercise Price of Exercisable Option Shares	$17.36	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range From 20.00 To 29.99 [Member]	'	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Abstract]	'	'	'
Range of Exercise Prices, Lower Limit	$20	'	'
Range of Exercise Prices, Upper Limit	$29.99	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range From 30.00 To 39.99 [Member]	'	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Abstract]	'	'	'
Range of Exercise Prices, Lower Limit	$30	'	'
Range of Exercise Prices, Upper Limit	$39.99	'	'
Number of Option Shares	4,051	'	'
Weighted Average Remaining Contractual Life	'3 years 1 month 22 days	'	'
Weighted Average Exercise Price of Option Shares	$30.86	'	'
Number of Exercisable Option Shares	4,051	'	'
Weighted Average Exercise Price of Exercisable Option Shares	$30.86	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range From 40.00 To 49.99 [Member]	'	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Abstract]	'	'	'
Range of Exercise Prices, Lower Limit	$40	'	'
Range of Exercise Prices, Upper Limit	$49.99	'	'
Number of Option Shares	349	'	'
Weighted Average Remaining Contractual Life	'4 years 5 months 26 days	'	'
Weighted Average Exercise Price of Option Shares	$44.49	'	'
Number of Exercisable Option Shares	349	'	'
Weighted Average Exercise Price of Exercisable Option Shares	$44.49	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range From 50.00 To 146.41 [Member]	'	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Abstract]	'	'	'
Range of Exercise Prices, Lower Limit	$50	'	'
Range of Exercise Prices, Upper Limit	$146.41	'	'
Number of Option Shares	79,316	'	'
Weighted Average Remaining Contractual Life	'1 year 11 months 14 days	'	'
Weighted Average Exercise Price of Option Shares	$89.14	'	'
Number of Exercisable Option Shares	79,316	'	'
Weighted Average Exercise Price of Exercisable Option Shares	$89.14	'	'
Stock Option [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award, Exercisable Period	'5 years	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	'3 years	'	'
Share Based Compensation Arrangement By Share Based Payment Award, Maximum Term	'10 years	'	'

Income_Tax_Details

Income Tax (Details) (USD $)	3 Months Ended								12 Months Ended
Income Tax (Details) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Contingency [Line Items]	'	'	'	'	'	'	'	'	'	'	'
State operating loss carryforwards, set to begin to expire in 2023	$25,300,000	'	'	'	'	'	'	'	$25,300,000	'	'
State tax credit carryforwards, set to expire in 2014	1,700,000	'	'	'	'	'	'	'	1,700,000	'	'
Current tax (benefit) expense	'	'	'	'	'	'	'	'	21,581,000	21,218,000	21,688,000
Deferred tax expense (benefit)	'	'	'	'	'	'	'	'	5,413,000	-3,656,000	-3,783,000
Income tax expense (benefit)	7,911,000	6,734,000	7,414,000	4,935,000	5,342,000	4,655,000	4,367,000	3,198,000	26,994,000	17,562,000	17,905,000
Deferred tax assets:	'	'	'	'	'	'	'	'	'	'	'
Allowance for loan and lease losses	27,196,000	'	'	'	30,027,000	'	'	'	27,196,000	30,027,000	'
Supplemental executive retirement plan	8,565,000	'	'	'	6,967,000	'	'	'	8,565,000	6,967,000	'
Stock option and restricted stock	917,000	'	'	'	682,000	'	'	'	917,000	682,000	'
OREO costs	7,929,000	'	'	'	3,801,000	'	'	'	7,929,000	3,801,000	'
Nonaccrual interest	2,354,000	'	'	'	193,000	'	'	'	2,354,000	193,000	'
Deferred tax assets, purchase accounting	15,551,000	'	'	'	0	'	'	'	15,551,000	0	'
Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross	7,176,000	'	'	'	0	'	'	'	7,176,000	0	'
deferred tax liabilities, unrealized gains on available-for-sale securities	0	'	'	'	11,150,000	'	'	'	0	11,150,000	'
Other	1,741,000	'	'	'	557,000	'	'	'	1,741,000	557,000	'
Total deferred tax assets	71,429,000	'	'	'	42,227,000	'	'	'	71,429,000	42,227,000	'
Deferred tax liabilities:	'	'	'	'	'	'	'	'	'	'	'
Asset purchase tax basis difference	-7,754,000	'	'	'	-19,408,000	'	'	'	-7,754,000	-19,408,000	'
FHLB stock dividends	-4,159,000	'	'	'	-1,963,000	'	'	'	-4,159,000	-1,963,000	'
Purchase accounting	0	'	'	'	-745,000	'	'	'	0	-745,000	'
Deferred loan fees	-4,512,000	'	'	'	-1,755,000	'	'	'	-4,512,000	-1,755,000	'
Depreciation	-7,076,000	'	'	'	-1,870,000	'	'	'	-7,076,000	-1,870,000	'
Total deferred tax liabilities	23,501,000	'	'	'	36,891,000	'	'	'	23,501,000	36,891,000	'
Net deferred tax (liability) asset	47,928,000	'	'	'	5,336,000	'	'	'	47,928,000	5,336,000	'
Reconciliation of effective income tax rate with federal statutory tax rate	'	'	'	'	'	'	'	'	'	'	'
Income tax based on statutory rate	'	'	'	'	'	'	'	'	30,454,000	22,297,000	23,080,000
Income tax based on statutory rate, percent	'	'	'	'	'	'	'	'	35.00%	35.00%	35.00%
Tax credits	'	'	'	'	'	'	'	'	-1,038,000	-504,000	-608,000
Tax credits, percent	'	'	'	'	'	'	'	'	-1.00%	-1.00%	-1.00%
Tax exempt instrument	'	'	'	'	'	'	'	'	-4,113,000	-3,906,000	-3,824,000
Tax exempt instrument, percent	'	'	'	'	'	'	'	'	-5.00%	-6.00%	-6.00%
Life insurance proceeds	'	'	'	'	'	'	'	'	-1,250,000	-1,001,000	-766,000
Life insurance proceeds, percent	'	'	'	'	'	'	'	'	-1.00%	-2.00%	-1.00%
Bargain purchase	'	'	'	'	'	'	'	'	0	0	-1,036,000
Bargain purchase, percent	'	'	'	'	'	'	'	'	0.00%	0.00%	-2.00%
effective income tax rate reconciliation, nondeductible expense, business combination, amount	'	'	'	'	'	'	'	'	1,362,000	0	0
effective income tax rate reconciliation, nondeductible expense, business combination, percent	'	'	'	'	'	'	'	'	2.00%	0.00%	0.00%
Other, net	'	'	'	'	'	'	'	'	1,579,000	676,000	1,059,000
Other, net, percent	'	'	'	'	'	'	'	'	1.00%	1.00%	2.00%
Income tax expense (benefit)	7,911,000	6,734,000	7,414,000	4,935,000	5,342,000	4,655,000	4,367,000	3,198,000	26,994,000	17,562,000	17,905,000
Income tax provision (benefit), percent	'	'	'	'	'	'	'	'	31.00%	27.00%	27.00%
Unrecognized tax position	0	'	'	'	'	'	'	'	0	'	'
Interest and penalties on unrecognized tax benefits	'	'	'	'	'	'	'	'	$0	'	'

Regulatory_Capital_Requirement2

Regulatory Capital Requirements (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total Capital, Actual Amount	$760,349	$652,704
Total Capital (to risk-weighted assets), Ratio	14.68%	20.62%
Total Capital For Capital Adequacy Purposes, Amount	414,300	253,242
Total Capital (to risk-weighted assets), For Capital Adequacy Purposes, Ratio	8.00%	8.00%
Tier 1 Capital, Actual Amount	695,489	612,584
Tier 1 Capital (to risk-weighted assets), Ratio	13.43%	19.35%
Tier 1 Capital For Capital Adequacy Purposes, Amount	207,150	126,621
Tier 1 Capital (to risk-weighted assets) For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Tier 1 Capital, Actual Amount	695,489	612,584
Tier 1 Capital (to average assets), Ratio	10.19%	12.78%
Tier 1 Capital For Capital Adequacy Purposes, Amount	272,891	191,778
Tier 1 Capital (to average assets) For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Parent Company [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total Capital, Actual Amount	700,099	565,677
Total Capital (to risk-weighted assets), Ratio	13.52%	17.87%
Total Capital For Capital Adequacy Purposes, Amount	414,238	253,244
Total Capital (to risk-weighted assets), For Capital Adequacy Purposes, Ratio	8.00%	8.00%
Total Capital To Be Well Capitalized Under Prompt Corrective Action Provision, Amount	517,797	316,556
Total Capital (to risk-weighted assets) To Be Well Capitalized Under Prompt Corrective Action Provision	10.00%	10.00%
Tier 1 Capital, Actual Amount	635,248	525,556
Tier 1 Capital (to risk-weighted assets), Ratio	12.27%	16.60%
Tier 1 Capital For Capital Adequacy Purposes, Amount	207,119	126,622
Tier 1 Capital (to risk-weighted assets) For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Tier 1 Capital To Be Well Capitalized Under Prompt Corrective Action Provision, Amount	310,678	189,933
Tier 1 Capital (to risk-weighted assets) To Be Well Capitalized Under Prompt Corrective Action Provision, Ratio	6.00%	6.00%
Tier 1 Capital, Actual Amount	635,248	525,556
Tier 1 Capital (to average assets), Ratio	9.29%	11.07%
Tier 1 Capital For Capital Adequacy Purposes, Amount	273,560	189,986
Tier 1 Capital (to average assets) For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Tier 1 Capital To Be Well Capitalized Under Prompt Corrective Provision, Amount	$341,950	$237,483
Tier 1 Capital (to average assets) To Be Well Capitalized Under Prompt Corrective Provision, Ratio	5.00%	5.00%

Parent_Company_Financial_Infor2

Parent Company Financial Information (Condensed Statements of Income) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Expense	'	'	'	'	'	'	'	'	'	'	'
Compensation and employee benefits	'	'	'	'	'	'	'	'	$125,432	$85,434	$81,552
Long-term obligations	'	'	'	'	'	'	'	'	0	0	579
Other borrowings	'	'	'	'	'	'	'	'	734	479	498
Other expense	'	'	'	'	'	'	'	'	29,684	21,015	17,154
Income (loss) before income taxes	27,884	20,010	22,005	17,111	18,804	16,535	16,266	12,100	87,010	63,705	65,942
Income tax expense (benefit)	7,911	6,734	7,414	4,935	5,342	4,655	4,367	3,198	26,994	17,562	17,905
Net Income (Loss)	19,973	13,276	14,591	12,176	13,462	11,880	11,899	8,902	60,016	46,143	48,037
Parent [Member]	'	'	'	'	'	'	'	'	'	'	'
Income	'	'	'	'	'	'	'	'	'	'	'
Dividend from banking subsidiaries	'	'	'	'	'	'	'	'	183,000	48,950	0
Interest-earning deposits	'	'	'	'	'	'	'	'	68	153	712
Other income	'	'	'	'	'	'	'	'	7	0	17
Total Income	'	'	'	'	'	'	'	'	183,075	49,103	729
Expense	'	'	'	'	'	'	'	'	'	'	'
Compensation and employee benefits	'	'	'	'	'	'	'	'	658	182	88
Long-term obligations	'	'	'	'	'	'	'	'	0	0	579
Other borrowings	'	'	'	'	'	'	'	'	258	0	0
Other expense	'	'	'	'	'	'	'	'	4,162	1,193	1,114
Total Expenses	'	'	'	'	'	'	'	'	5,078	1,375	1,781
Income (loss) before income taxes	'	'	'	'	'	'	'	'	177,997	47,728	-1,052
Income tax expense (benefit)	'	'	'	'	'	'	'	'	-1,552	-435	91
Income before equity in undistributed net income (loss) of subsidiaries	'	'	'	'	'	'	'	'	179,549	48,163	-1,143
Equity in undistributed net income (loss) of subsidiaries	'	'	'	'	'	'	'	'	-119,533	-2,020	49,180
Net Income (Loss)	'	'	'	'	'	'	'	'	$60,016	$46,143	$48,037

Parent_Company_Financial_Infor3

Parent Company Financial Information (Condensed Balance Sheets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets	'	'	'	'
Interest-earning deposits	$14,531	$389,353	'	'
Total cash and cash equivalents	179,561	513,926	294,289	514,130
Other assets	217,289	113,967	'	'
Total Assets	7,161,582	4,906,335	'	'
Liabilities and Shareholdersb Equity	'	'	'	'
Other liabilities	87,252	68,598	'	'
Total liabilities	6,108,333	4,142,327	'	'
Shareholdersb equity	1,053,249	764,008	759,338	706,878
Total liabilities and shareholders' equity	7,161,582	4,906,335	'	'
Parent [Member]	'	'	'	'
Assets	'	'	'	'
Cash and due from banking subsidiaries	3,006	1,729	'	'
Interest-earning deposits	50,678	84,915	'	'
Total cash and cash equivalents	53,684	86,644	75,234	159,173
Other assets	1,952	649	'	'
Total Assets	1,053,675	764,267	'	'
Liabilities and Shareholdersb Equity	'	'	'	'
Other liabilities	426	259	'	'
Total liabilities	426	259	'	'
Shareholdersb equity	1,053,249	764,008	'	'
Total liabilities and shareholders' equity	1,053,675	764,267	'	'
Banking Subsidiaries [Member] \| Parent [Member]	'	'	'	'
Assets	'	'	'	'
Investment in subsidiaries	993,002	676,974	'	'
Other Subsidiaries [Member] \| Parent [Member]	'	'	'	'
Assets	'	'	'	'
Investment in subsidiaries	$5,037	$0	'	'

Parent_Company_Financial_Infor4

Parent Company Financial Information (Condensed Statements of Cash Flows) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities	'	'	'
Net Income (Loss)	$60,016	$46,143	$48,037
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Stock-based compensation expense	2,844	1,622	1,635
Net cash provided by operating activities	79,636	134,899	86,424
Net cash acquired in business combinations	-154,170	0	247,792
Investing Activities	'	'	'
Proceeds from termination of trust subsidiaries	0	0	774
Net cash provided by investing activities	-281,060	8,403	-23,270
Financing Activities	'	'	'
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	-32	0	0
Cash dividends paid	-19,858	-38,824	-10,660
Repayment of long-term subordinated debt	-51,000	0	-25,774
Purchase and retirement of common stock	-429	0	-32
Proceeds from exercise of stock options	1,092	713	848
Excess tax benefit from stock-based compensation	1,203	0	98
Net cash provided by financing activities	-132,941	76,335	-282,995
Increase (decrease) in cash and cash equivalents	-334,365	219,637	-219,841
Cash and cash equivalents at beginning of period	513,926	294,289	514,130
Cash and cash equivalents at end of period	179,561	513,926	294,289
Parent [Member]	'	'	'
Operating Activities	'	'	'
Net Income (Loss)	60,016	46,143	48,037
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Equity in undistributed earnings of subsidiaries	119,533	2,020	-49,180
Stock-based compensation expense	2,844	1,622	1,635
Net changes in other assets and liabilities	6,830	-264	315
Net cash provided by operating activities	189,223	49,521	807
Net cash acquired in business combinations	-53,159	0	0
Investing Activities	'	'	'
Proceeds from termination of trust subsidiaries	0	0	774
Net cash provided by investing activities	-53,159	0	774
Financing Activities	'	'	'
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	-32	0	0
Cash dividends paid	-19,858	-38,824	-10,660
Repayment of long-term subordinated debt	-51,000	0	-25,774
Purchase and retirement of common stock	-429	0	-32
Proceeds from exercise of stock options	1,092	713	848
Downstream stock offering proceeds to the Bank	-100,000	0	-50,000
Excess tax benefit from stock-based compensation	1,203	0	98
Net cash provided by financing activities	-169,024	-38,111	-85,520
Increase (decrease) in cash and cash equivalents	-32,960	11,410	-83,939
Cash and cash equivalents at beginning of period	86,644	75,234	159,173
Cash and cash equivalents at end of period	$53,684	$86,644	$75,234

Summary_Of_Quarterly_Financial2

Summary Of Quarterly Financial Information (Unaudited) (Details) (USD $)	3 Months Ended																12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]	'		'		'		'		'		'		'		'		'		'		'
Total interest income	$78,307		$81,599		$82,268		$54,761		$57,209		$59,469		$62,114		$69,712		$296,935		$248,504		$251,271
Total interest expense	1,098		1,184		2,279		1,279		2,311		2,204		2,413		2,649		5,840		9,577		14,535
Net Interest Income	77,209		80,415		79,989		53,482		54,898		57,265		59,701		67,063		291,095		238,927		236,736
Provision for loan and lease losses	-2,100		4,260		2,000		-1,000		2,350		2,875		3,750		4,500		3,160		13,475		'
Provision for losses on covered loans	-1,582		-947		-1,712		980		2,511		-3,992		11,688		15,685		-3,261		25,892		'
Noninterest income (loss)	10,612		7,622		6,808		1,658		6,567		-911		11,828		9,574		26,700		27,058		-9,283
Noninterest expense	63,619		64,714		64,504		38,049		37,800		40,936		39,825		44,352		230,886		162,913		155,759
Income before income taxes	27,884		20,010		22,005		17,111		18,804		16,535		16,266		12,100		87,010		63,705		65,942
Income tax expense (benefit)	7,911		6,734		7,414		4,935		5,342		4,655		4,367		3,198		26,994		17,562		17,905
Net Income (Loss)	$19,973		$13,276		$14,591		$12,176		$13,462		$11,880		$11,899		$8,902		$60,016		$46,143		$48,037
Per Common Share	'		'		'		'		'		'		'		'		'		'		'
Earnings (basic)	$0.39	[1]	$0.26	[1]	$0.28	[1]	$0.31	[1]	$0.34	[1]	$0.30	[1]	$0.30	[1]	$0.22	[1]	$1.24	[1]	$1.16	[1]	$1.22
Earnings (diluted)	$0.38	[1]	$0.25	[1]	$0.28	[1]	$0.31	[1]	$0.34	[1]	$0.30	[1]	$0.30	[1]	$0.22	[1]	$1.21	[1]	$1.16	[1]	$1.21

[1]	Due to averaging of shares, quarterly earnings per share may not add up to the totals reported for the full year.