Columbia Banking System (COLB) 10-Q 7 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 31, 2015
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Entity Registrant Name	COLUMBIA BANKING SYSTEM INC
Entity Central Index Key	887,343
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		57,734,127

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) shares in Thousands, $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
ASSETS
Cash and due from banks		$ 172,139	$ 171,221
Interest-earning deposits with banks		5,564	16,949
Total cash and cash equivalents		177,703	188,170
Securities available for sale at fair value (amortized cost of $1,907,403 and $2,087,069, respectively)		1,914,445	2,098,257
Federal Home Loan Bank stock at cost		11,803	33,365
Loans held for sale		4,220	1,116
Loans, net of unearned income of ($49,359) and ($59,374), respectively		5,611,897	5,445,378
Loans and Leases Receivable, Allowance		69,257	69,569
Loans, net		5,542,640	5,375,809
FDIC loss sharing asset		9,344	15,174
Interest receivable		27,483	27,802
Premises and equipment, net		170,380	172,090
Other real estate owned		20,617	22,190
Goodwill		382,537	382,537
Other intangible assets, net		26,924	30,459
Other assets		229,923	231,877
Total Assets		8,518,019	8,578,846
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing		3,207,538	2,651,373
Interest-bearing		3,836,835	4,273,349
Total deposits		7,044,373	6,924,722
Federal Home Loan Bank advances		45,549	216,568
Securities sold under agreements to repurchase		92,230	105,080
Other Borrowings		0	8,248
Other liabilities		99,653	96,053
Total liabilities		$ 7,281,805	$ 7,350,671
Commitments and contingent liabilities
Shareholders' equity:
Preferred Stock, Shares Authorized		2,000	2,000
Preferred Stock, Shares Issued		9	9
Preferred Stock, Value, Issued		$ 2,217	$ 2,217
Authorized shares		115,000	63,033
Common Stock Shares Issued And Outstanding		57,709	57,437
Common Stock (no par value)		$ 987,320	$ 985,839
Retained earnings		243,888	234,498
Accumulated other comprehensive income	[1]	2,789	5,621
Total shareholders' equity		1,236,214	1,228,175
Total Liabilities and Shareholders' Equity		$ 8,518,019	$ 8,578,846
[1]	All amounts are net of tax. Amounts in parenthesis indicate debits.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Securities available-for-sale, amortized cost	$ 1,907,403	$ 2,087,069
Less: Unearned income on loans	$ (49,359)	$ (59,374)
Common stock, par value	$ 0	$ 0
Authorized shares	115,000	63,033
Common stock, shares outstanding	57,709	57,437

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest Income
Loans	$ 71,744	$ 67,004	$ 142,566	$ 132,545
Taxable securities	7,260	6,382	14,786	13,134
Tax-exempt securities	3,010	2,671	6,052	5,289
Deposits in banks	26	30	53	44
Total interest income	82,040	76,087	163,457	151,012
Interest Expense
Deposits	740	729	1,488	1,481
Federal Home Loan Bank advances	154	115	313	229
Other borrowings	136	119	282	238
Total interest expense	1,030	963	2,083	1,948
Net Interest Income	81,010	75,124	161,374	149,064
Provision for loan and lease losses	2,202	2,117	3,411	4,039
Net interest income after provision for loan and lease losses	78,808	73,007	157,963	145,025
Noninterest Income (Loss)
Service charges and other fees	15,874	13,790	30,743	26,726
Merchant services fees	2,340	2,040	4,380	3,910
Gain (Loss) on Sale of Securities, Net	343	296	1,064	519
Bank owned life insurance	1,206	976	2,284	1,941
Change in FDIC loss sharing asset	(1,494)	(5,050)	(1,344)	(9,869)
Other	3,193	2,575	7,102	5,408
Total noninterest income (loss)	21,462	14,627	44,229	28,635
Noninterest Expense
Compensation and employee benefits	38,446	31,064	77,546	62,402
Occupancy	8,687	8,587	16,680	16,831
Merchant processing	1,079	998	2,056	1,978
Advertising and promotion	1,195	950	2,126	1,719
Data processing and communications	4,242	3,680	9,226	7,200
Legal and professional fees	2,847	2,303	5,354	4,472
Taxes, licenses and fees	1,427	1,051	2,659	2,231
Regulatory premiums	1,321	1,073	2,542	2,249
Net cost (benefit) of operation of other real estate owned	(563)	(97)	(1,809)	49
Amortization of intangibles	1,718	1,480	3,535	3,060
Other	8,072	6,675	15,290	12,959
Total noninterest expense	68,471	57,764	135,205	115,150
Income before income taxes	31,799	29,870	66,987	58,510
Income tax provision	9,853	8,643	20,680	17,439
Net Income	$ 21,946	$ 21,227	$ 46,307	$ 41,071
Earnings per common share
Basic ($ per share)	$ 0.38	$ 0.40	$ 0.80	$ 0.79
Diluted ($ per share)	0.38	0.40	0.80	0.77
Dividends paid per common share	$ 0.34	$ 0.24	$ 0.64	$ 0.36
Weighted average number of common shares outstanding	57,055	52,088	56,999	51,600
Weighted average number of diluted common shares outstanding	57,069	52,494	57,012	52,463

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net of tax		$ 21,946	$ 21,227	$ 46,307	$ 41,071
Unrealized gain from securities:
Net unrealized holding loss from available for sale securities arising during the period		(11,341)	8,768	(1,965)	15,887
Reclassification adjustment of net gain from sale of available for sale securities included in income		(219)	(189)	(678)	(331)
Net unrealized gain from securities, net of reclassification adjustment		(11,560)	8,579	(2,643)	15,556
Pension plan liability adjustment:
Unrecognized net actuarial gain (loss) during the period				(280)	0
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost		63	24	91	48
Pension plan liability adjustment, net		63	24	(189)	48
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	[1]	(11,497)	8,603	(2,832)	15,604
Total comprehensive income		$ 10,449	$ 29,830	$ 43,475	$ 56,675
[1]	All amounts are net of tax. Amounts in parenthesis indicate debits.

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net unrealized holding gain (loss) from available for sale securities arising during the period, tax	$ 6,457	$ (4,992)	$ 1,119	$ (9,041)
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax	124	107	386	188
Net unrealized loss from unfunded defined benefit plan liability arising during the period, tax	0	0	159	0
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, tax	$ (35)	$ (13)	$ (51)	$ (26)

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Preferred Stock [Member]
Balance, value at Dec. 31, 2013	$ 1,053,249	$ 860,562	$ 202,514	$ (12,044)	$ 2,217
Balance, shares at Dec. 31, 2013		51,265			9
Net Income	41,071		41,071
Other comprehensive income	15,604			15,604
Issuance of common stock - cashless exercise of warrants, shares		1,140
Issuance of common stock - cashless exercise of warrants, value	0	$ 0
Stock Adjustment Value Deferred Compensation	(1)	$ (1)
Stock Adjustment Deferred Compensation - Shares		0
Issuance of common stock - stock option and other plans, value	425	$ 425
Issuance of common stock - stock option and other plans, shares		21
Issuance of common stock - restricted stock awards, net of cancelled awards, value	1,224	$ 1,224
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		233
Stock Repurchased and Retired During Period, Value	(601)	$ (601)
Stock Repurchased During Period, Shares		(24)
Dividends, Preferred Stock, Cash	(37)		(37)
Cash dividends paid on common stock	(18,783)		(18,783)
Balance, value at Jun. 30, 2014	1,092,151	$ 861,609	224,765	3,560	$ 2,217
Balance, shares at Jun. 30, 2014		52,635			9
Balance, value at Dec. 31, 2014	1,228,175	$ 985,839	234,498	5,621	$ 2,217
Balance, shares at Dec. 31, 2014		57,437			9
Net Income	46,307		46,307
Other comprehensive income	(2,832)			(2,832)
Issuance of common stock - stock option and other plans, value	519	$ 519
Issuance of common stock - stock option and other plans, shares		21
Issuance of common stock - restricted stock awards, net of cancelled awards, value	1,836	$ 1,836
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		282
Stock Repurchased and Retired During Period, Value	(874)	$ (874)
Stock Repurchased During Period, Shares		(31)
Dividends, Preferred Stock, Cash	(66)		(66)
Cash dividends paid on common stock	(36,851)		(36,851)
Balance, value at Jun. 30, 2015	$ 1,236,214	$ 987,320	$ 243,888	$ 2,789	$ 2,217
Balance, shares at Jun. 30, 2015		57,709			9

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014
Cash Flows From Operating Activities
Net Income		$ 46,307,000	$ 41,071,000
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses		3,411,000	4,039,000
Stock-based compensation expense		1,836,000	1,224,000
Depreciation, amortization and accretion		14,630,000	17,057,000
Net realized gain on sale of securities		1,064,000	519,000
Net realized gain on sale of other assets		(289,000)	453,000
Net realized (gain) loss on sale of other real estate owned		(2,992,000)	(2,972,000)
Write-down on other real estate owned		793,000	2,554,000
Net change in:
Loans held for sale		(3,104,000)	(15,000)
Interest receivable		319,000	23,000
Interest payable		(105,000)	(20,000)
Other assets		1,579,000	3,062,000
Other liabilities		3,292,000	(2,589,000)
Net cash provided by operating activities		64,613,000	63,368,000
Cash Flows From Investing Activities
Payments for (Proceeds from) Loans and Leases		(175,260,000)	(201,162,000)
Purchases of securities available for sale		(37,070,000)	(22,804,000)
Purchases of premises and equipment		(4,805,000)	(8,383,000)
Payments to Acquire Federal Home Loan Bank Stock		(1,440,000)	0
Proceeds from FDIC reimbursement on loss-sharing asset		4,009,000	3,982,000
Proceeds from sales of securities available for sale		72,166,000	30,704,000
Proceeds from principal repayments and maturities of securities available for sale		135,102,000	83,788,000
Proceeds from Sales of Assets, Investing Activities		30,871,000	1,095,000
Proceeds from sales of other real estate and other personal property owned	[1]	11,553,000	15,932,000
Payment to FDIC Related to Loss-Sharing Asset		(487,000)	(2,217,000)
Net cash provided by (used in) investing activities		34,639,000	(99,065,000)
Cash Flows From Financing Activities
Net increase (decrease) in deposits		119,651,000	25,594,000
Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net		(12,850,000)	0
Proceeds from Federal Home Loan Bank advances		1,319,000,000	1,168,000,000
Proceeds from Federal Reserve Bank borrowings		1,010,000	50,000
Proceeds from exercise of stock options		519,000	425,000
Repayment of Federal Home Loan Bank advances		(1,490,000,000)	(1,094,000,000)
Repayment of Federal Reserve Bank borrowings		(1,010,000)	(50,000)
Payment of common stock dividends		(36,851,000)	(18,783,000)
Payments of Ordinary Dividends, Preferred Stock and Preference Stock		(66,000)	(37,000)
Repayments of Subordinated Debt		8,248,000	0
Purchase and retirement of common stock		874,000	601,000
Net cash used by financing activities		(109,719,000)	80,598,000
Increase (Decrease) in cash and cash equivalents		(10,467,000)	44,901,000
Cash and cash equivalents at beginning of period		188,170,000	179,561,000
Cash and cash equivalents at end of period		177,703,000	224,462,000
Supplemental Information:
Cash paid for interest		2,188,000	1,968,000
Cash paid for income tax		7,281,000	8,200,000
Non-cash investing and financing activities
Loans transferred to other real estate owned		$ 7,836,000	$ 7,841,000
[1]	Reclassified to conform to the current period’s presentation. The reclassification was limited to removing the separate line item for “Sales of covered other real estate owned” and including the prior period activity in the line item for sales of other real estate and other personal property owned.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Basis of Presentation And Significant Accounting Policies
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies Basis of Presentation The interim unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with instructions to Form 10-Q and Article 10 of Regulation S-X. The consolidated financial statements include the accounts of Columbia Banking System, Inc. (“we”, “our”, “Columbia” or the “Company”) and its subsidiaries, including its wholly owned banking subsidiary Columbia State Bank (“Columbia Bank” or the “Bank”) and West Coast Trust Company, Inc. (“West Coast Trust”). All intercompany transactions and accounts have been eliminated in consolidation. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair statement of the results for the interim periods presented have been included. The results of operations for the six months ended June 30, 2015 are not necessarily indicative of results to be anticipated for the year ending December 31, 2015 . The accompanying interim unaudited consolidated financial statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2014 Annual Report on Form 10-K. Our results of operations for the three and six month periods ended June 30, 2015 include the acquisition of Intermountain Community Bancorp (“Intermountain”) for the entire period. However, the results of operations for the prior year periods do not include the acquisition. See Note 3, Business Combinations, for further information regarding this acquisition. Significant Accounting Policies The significant accounting policies used in preparation of our consolidated financial statements are disclosed in our 2014 Annual Report on Form 10-K. There have not been any changes in our significant accounting policies compared to those contained in our 2014 Form 10-K disclosure for the year ended December 31, 2014 .

Accounting Pronouncements Recen

Accounting Pronouncements Recently Issued	6 Months Ended
	Jun. 30, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Pronouncements Recently Issued	Accounting Pronouncements Recently Issued In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers . The guidance in this update supersedes the revenue recognition requirements in ASC Topic 605, Revenue Recognition, and most industry-specific guidance throughout the industry topics of the codification. For public companies, this update was to be effective for interim and annual periods beginning after December 15, 2016. However, on July 9, 2015, the FASB voted to approve a one year delay of the effective date and to permit companies to voluntarily adopt the new standard as of the original effective date. The Company is currently assessing the impact that this guidance will have on its consolidated financial statements, but does not expect the guidance to have a material impact on the Company’s consolidated financial statements.

Business combinations

Business combinations	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	Business Combinations On November 1, 2014 , the Company completed its acquisition of Intermountain. The Company paid $131.9 million in total consideration to acquire 100% of the equity interests of Intermountain. The primary reason for the acquisition was to expand the Company’s geographic footprint into the state of Idaho, consistent with its ongoing growth strategy. The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting. The assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the November 1, 2014 acquisition date. Initial accounting for deferred taxes was incomplete as of June 30, 2015 . The amount currently recognized in the financial statements has been determined provisionally as the final Intermountain Community Bancorp tax return has not yet been completed. The application of the acquisition method of accounting resulted in recognition of goodwill of $38.6 million and a core deposit intangible of $10.9 million , or 1.75% of core deposits. The goodwill represents the excess purchase price over the estimated fair value of the net assets acquired. The goodwill is 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: November 1, 2014 (in thousands) Purchase price as of November 1, 2014 $ 131,935 Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value: Cash and cash equivalents $ 47,283 Investment securities 299,458 Federal Home Loan Bank stock 2,124 Acquired loans 502,595 Interest receivable 4,656 Premises and equipment 20,696 Other real estate owned 2,752 Core deposit intangible 10,900 Other assets 35,353 Deposits (736,795 ) Other borrowings (22,904 ) Securities sold under agreements to repurchase (59,043 ) Other liabilities (13,725 ) Total fair value of identifiable net assets 93,350 Goodwill $ 38,585 See Note 9, Goodwill and Other Intangible Assets, for further discussion of the accounting for goodwill and other intangible assets. The operating results of the Company reported herein include the operating results produced by the acquired assets and assumed liabilities for the period January 1, 2015 to June 30, 2015 . Disclosure of the amount of Intermountain’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. For illustrative purposes only, the following table presents certain unaudited pro forma information for the six month period ended June 30, 2014 . This unaudited pro forma information was calculated as if Intermountain had been acquired as of the beginning of the year prior to the date of acquisition. The unaudited pro forma information combines the historical results of Intermountain with the Company’s consolidated historical results and includes certain adjustments reflecting the estimated impact of certain fair value adjustments for the respective period. The pro forma information is not indicative of what would have occurred had the acquisition occurred as of the beginning of the year prior to the acquisition. 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 investment securities been recorded at fair value as of the beginning of the year prior to the date of acquisition. 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 would have differed from the unaudited pro forma information presented. Unaudited Pro Forma Six Months Ended June 30, 2014 (in thousands except per share) Total revenues (net interest income plus noninterest income) $ 197,723 Net income $ 43,719 Earnings per share - basic $ 0.78 Earnings per share - diluted $ 0.77 In connection with the Intermountain acquisition, Columbia recognized $5.6 million and $8.5 million in acquisition-related expenses for the three and six month periods ended June 30, 2015 , respectively, and recognized no acquisition-related expenses for the three and six month periods ended June 30, 2014 . In addition, related to the acquisition of West Coast Bancorp (“West Coast”) which was completed on April 1, 2013, Columbia recognized $72 thousand in acquisition-related expenses for the six month period ended June 30, 2015 , and $672 thousand and $1.6 million in acquisition-related expenses for the three and six month periods ended June 30, 2014 , respectively. The following table shows the impact of the acquisition-related expenses related to the acquisition of Intermountain for the three and six month periods ended June 30, 2015 to the various components of noninterest expense: Three Months Ended June 30, Six Months Ended June 30, 2015 2015 (in thousands) Noninterest Expense Compensation and employee benefits $ 3,035 $ 3,308 Occupancy 804 1,303 Advertising and promotion 247 343 Data processing and communications 180 1,738 Legal and professional fees 633 1,018 Other 744 835 Total impact of acquisition-related costs to noninterest expense $ 5,643 $ 8,545 See Note 2, Business Combinations, in Item 8 of our 2014 Form 10-K for additional details related to the Intermountain acquisition.

Securities

Securities	6 Months Ended
	Jun. 30, 2015
Available-for-sale Securities [Abstract]
Securities	Securities 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 (in thousands) June 30, 2015 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 1,042,134 $ 8,427 $ (9,482 ) $ 1,041,079 State and municipal securities 479,847 11,184 (2,000 ) 489,031 U.S. government agency and government-sponsored enterprise securities 359,714 1,195 (1,884 ) 359,025 U.S. government securities 20,424 — (262 ) 20,162 Other securities 5,284 23 (159 ) 5,148 Total $ 1,907,403 $ 20,829 $ (13,787 ) $ 1,914,445 December 31, 2014 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 1,160,378 $ 10,219 $ (8,210 ) $ 1,162,387 State and municipal securities 483,578 14,432 (1,526 ) 496,484 U.S. government agency and government-sponsored enterprise securities 416,919 856 (4,069 ) 413,706 U.S. government securities 20,910 — (411 ) 20,499 Other securities 5,284 20 (123 ) 5,181 Total $ 2,087,069 $ 25,527 $ (14,339 ) $ 2,098,257 Proceeds from sales of securities available-for-sale were $14.9 million and $24.3 million for the three months ended June 30, 2015 and 2014 , respectively, and were $72.2 million and $30.7 million for the six months ended June 30, 2015 and 2014 , respectively. The following table provides the gross realized gains and losses on the sales of securities for the periods indicated: Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 (in thousands) Gross realized gains $ 343 $ 296 $ 1,073 $ 519 Gross realized losses — — (9 ) — Net realized gains $ 343 $ 296 $ 1,064 $ 519 The scheduled contractual maturities of investment securities available for sale at June 30, 2015 are presented as follows: June 30, 2015 Amortized Cost Fair Value (in thousands) Due within one year $ 20,112 $ 20,399 Due after one year through five years 391,397 392,321 Due after five years through ten years 535,833 539,403 Due after ten years 954,777 957,174 Other securities with no stated maturity 5,284 5,148 Total investment securities available-for-sale $ 1,907,403 $ 1,914,445 The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law: June 30, 2015 (in thousands) Washington and Oregon State to secure public deposits $ 331,431 Federal Reserve Bank to secure borrowings 55,508 Other securities pledged 149,327 Total securities pledged as collateral $ 536,266 The following table shows 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 June 30, 2015 and December 31, 2014 : Less than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized (in thousands) June 30, 2015 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 290,497 $ (2,468 ) $ 200,514 $ (7,014 ) $ 491,011 $ (9,482 ) State and municipal securities 123,367 (1,020 ) 29,701 (980 ) 153,068 (2,000 ) U.S. government agency and government-sponsored enterprise securities 128,033 (418 ) 100,277 (1,466 ) 228,310 (1,884 ) U.S. government securities — — 19,613 (262 ) 19,613 (262 ) Other securities 2,304 (11 ) 2,807 (148 ) 5,111 (159 ) Total $ 544,201 $ (3,917 ) $ 352,912 $ (9,870 ) $ 897,113 $ (13,787 ) December 31, 2014 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 258,825 $ (1,287 ) $ 279,015 $ (6,924 ) $ 537,840 $ (8,211 ) State and municipal securities 71,026 (543 ) 44,148 (982 ) 115,174 (1,525 ) U.S. government agency and government-sponsored enterprise securities 105,250 (518 ) 216,221 (3,551 ) 321,471 (4,069 ) U.S. government securities — — 19,450 (411 ) 19,450 (411 ) Other securities 2,313 (2 ) 2,834 (121 ) 5,147 (123 ) Total $ 437,414 $ (2,350 ) $ 561,668 $ (11,989 ) $ 999,082 $ (14,339 ) At June 30, 2015 , there were 108 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 35 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 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 upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at June 30, 2015 . At June 30, 2015 , there were 123 state and municipal government securities in an unrealized loss position, of which 28 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 June 30, 2015 , none of the rated obligations of state and local government entities held by the Company had a below investment grade credit rating. Because the credit quality of these securities are investment grade and the Company does not 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 upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at June 30, 2015 . At June 30, 2015 , there were 20 U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, eight of which 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 upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at June 30, 2015 . At June 30, 2015 , there were two U.S. government securities in an unrealized loss position, both of which 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 upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at June 30, 2015 . At June 30, 2015 , there were two other securities in an unrealized loss position, of which one 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 these investments to be other-than-temporarily impaired at June 30, 2015 as it has the intent and ability to hold the investments for sufficient time to allow for recovery in the market value.

Loans

Loans	6 Months Ended
	Jun. 30, 2015
Loans Receivable, Net [Abstract]
Loans	Loans The Company’s loan portfolio includes originated and purchased loans. Originated loans and purchased loans for which there was no evidence of credit deterioration at their acquisition date and it was probable that we would be able to collect all contractually required payments are referred to collectively as loans, excluding purchased credit impaired loans. Purchased loans for which there was, at acquisition date, evidence of credit deterioration since their origination and it was probable that we would be unable to collect all contractually required payments are referred to as purchased credit impaired loans, or “PCI loans.” The following is an analysis of the loan portfolio by major types of loans (net of unearned income): June 30, 2015 December 31, 2014 Loans, excluding PCI loans PCI Loans Total Loans, excluding PCI loans PCI Loans Total (in thousands) Commercial business $ 2,255,468 $ 41,221 $ 2,296,689 $ 2,119,565 $ 44,505 $ 2,164,070 Real estate: One-to-four family residential 181,849 25,740 207,589 175,571 26,993 202,564 Commercial and multifamily residential 2,406,594 108,578 2,515,172 2,363,541 128,769 2,492,310 Total real estate 2,588,443 134,318 2,722,761 2,539,112 155,762 2,694,874 Real estate construction: One-to-four family residential 127,311 2,882 130,193 116,866 4,021 120,887 Commercial and multifamily residential 129,302 2,020 131,322 134,443 2,321 136,764 Total real estate construction 256,613 4,902 261,515 251,309 6,342 257,651 Consumer 358,365 21,926 380,291 364,182 23,975 388,157 Less: Net unearned income (49,359 ) — (49,359 ) (59,374 ) — (59,374 ) Total loans, net of unearned income 5,409,530 202,367 5,611,897 5,214,794 230,584 5,445,378 Less: Allowance for loan and lease losses (53,083 ) (16,174 ) (69,257 ) (53,233 ) (16,336 ) (69,569 ) Total loans, net $ 5,356,447 $ 186,193 $ 5,542,640 $ 5,161,561 $ 214,248 $ 5,375,809 Loans held for sale $ 4,220 $ — $ 4,220 $ 1,116 $ — $ 1,116 At June 30, 2015 and December 31, 2014 , 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, Oregon and Idaho. The Company has made loans to executive 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 $10.1 million at June 30, 2015 and $13.2 million at December 31, 2014 . During the first six months of 2015 , there were $7 thousand in advances and $3.1 million in repayments. At June 30, 2015 and December 31, 2014 , $1.22 billion and $1.08 billion of commercial and residential real estate loans were pledged as collateral on Federal Home Loan Bank of Des Moines (“FHLB”) borrowings and additional borrowing capacity. The Company has also pledged $47.5 million and $46.0 million of commercial loans to the Federal Reserve Bank for additional borrowing capacity at June 30, 2015 and December 31, 2014 , respectively. The following is an analysis of nonaccrual loans as of June 30, 2015 and December 31, 2014 : June 30, 2015 December 31, 2014 Recorded Unpaid Principal Recorded Unpaid Principal (in thousands) Commercial business: Secured $ 13,018 $ 17,139 $ 16,552 $ 21,453 Unsecured 521 673 247 269 Real estate: One-to-four family residential 4,193 5,985 2,822 5,680 Commercial & multifamily residential: Commercial land 1,561 1,704 821 1,113 Income property 1,276 1,331 3,200 5,521 Owner occupied 972 1,131 3,826 5,837 Real estate construction: One-to-four family residential: Land and acquisition 862 866 95 112 Residential construction 1,075 1,222 370 370 Commercial & multifamily residential: Owner occupied 469 489 480 489 Consumer 1,799 2,176 2,939 3,930 Total $ 25,746 $ 32,716 $ 31,352 $ 44,774 Loans, excluding purchased credit impaired loans The following is an aging of the recorded investment of the loan portfolio as of June 30, 2015 and December 31, 2014 : Current 30 - 59 60 - 89 Greater Total Nonaccrual Total Loans June 30, 2015 (in thousands) Commercial business: Secured $ 2,149,972 $ 3,847 $ 1,589 $ — $ 5,436 $ 13,018 $ 2,168,426 Unsecured 81,433 270 — — 270 521 82,224 Real estate: One-to-four family residential 172,268 2,024 128 — 2,152 4,193 178,613 Commercial & multifamily residential: Commercial land 206,558 1,154 — — 1,154 1,561 209,273 Income property 1,310,441 1,756 415 — 2,171 1,276 1,313,888 Owner occupied 857,764 589 276 — 865 972 859,601 Real estate construction: One-to-four family residential: Land and acquisition 15,955 — — — — 862 16,817 Residential construction 107,279 758 — — 758 1,075 109,112 Commercial & multifamily residential: Income property 64,557 — — — — — 64,557 Owner occupied 61,572 981 — — 981 469 63,022 Consumer 341,606 444 148 — 592 1,799 343,997 Total $ 5,369,405 $ 11,823 $ 2,556 $ — $ 14,379 $ 25,746 $ 5,409,530 Current 30 - 59 60 - 89 Greater Total Nonaccrual Total Loans December 31, 2014 (in thousands) Commercial business: Secured $ 2,004,418 $ 5,137 $ 6,149 $ 1,372 $ 12,658 $ 16,552 $ 2,033,628 Unsecured 79,661 185 — — 185 247 80,093 Real estate: One-to-four family residential 167,197 1,700 45 — 1,745 2,822 171,764 Commercial & multifamily residential: Commercial land 187,470 1,454 34 — 1,488 821 189,779 Income property 1,294,982 3,031 786 — 3,817 3,200 1,301,999 Owner occupied 839,689 937 289 — 1,226 3,826 844,741 Real estate construction: One-to-four family residential: Land and acquisition 15,462 953 — — 953 95 16,510 Residential construction 97,821 326 — 4 330 370 98,521 Commercial & multifamily residential: Income property 73,783 — — — — — 73,783 Owner occupied 57,470 — 994 — 994 480 58,944 Consumer 341,032 933 118 10 1,061 2,939 345,032 Total $ 5,158,985 $ 14,656 $ 8,415 $ 1,386 $ 24,457 $ 31,352 $ 5,214,794 The following is an analysis of impaired loans as of June 30, 2015 and December 31, 2014 : Recorded Investment Recorded Investment Impaired Loans With Impaired Loans Without Recorded Unpaid Related Recorded Unpaid June 30, 2015 (in thousands) Commercial business: Secured $ 2,160,836 $ 7,590 $ 1,230 $ 1,231 $ 1,161 $ 6,360 $ 8,169 Unsecured 82,224 — — — — — — Real estate: One-to-four family residential 174,430 4,183 416 458 111 3,767 4,428 Commercial & multifamily residential: Commercial land 209,273 — — — — — — Income property 1,311,944 1,944 — — — 1,944 2,326 Owner occupied 853,498 6,103 575 574 20 5,528 8,008 Real estate construction: One-to-four family residential: Land and acquisition 15,849 968 107 107 66 861 866 Residential construction 108,219 893 — — — 893 893 Commercial & multifamily residential: Income property 64,557 — — — — — — Owner occupied 63,022 — — — — — — Consumer 343,971 26 — — — 26 105 Total $ 5,387,823 $ 21,707 $ 2,328 $ 2,370 $ 1,358 $ 19,379 $ 24,795 Recorded Investment Recorded Investment Impaired Loans With Impaired Loans Without Recorded Unpaid Related Recorded Unpaid December 31, 2014 (in thousands) Commercial business: Secured $ 2,023,104 $ 10,524 $ 99 $ 99 $ 25 $ 10,425 $ 12,410 Unsecured 80,091 2 2 2 2 — — Real estate: One-to-four family residential 169,619 2,145 424 465 120 1,721 2,370 Commercial & multifamily residential: Commercial land 189,779 — — — — — — Income property 1,295,650 6,349 — — — 6,349 10,720 Owner occupied 835,895 8,846 582 582 27 8,264 12,732 Real estate construction: One-to-four family residential: Land and acquisition 16,401 109 109 109 67 — — Residential construction 98,521 — — — — — — Commercial & multifamily residential: Income property 73,783 — — — — — — Owner occupied 58,944 — — — — — — Consumer 344,908 124 — — — 124 201 Total $ 5,186,695 $ 28,099 $ 1,216 $ 1,257 $ 241 $ 26,883 $ 38,433 The following table provides additional information on impaired loans for the three and six month periods indicated: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized (in thousands) Commercial business: Secured $ 9,231 $ 8 $ 6,933 $ 17 $ 9,662 $ 15 $ 6,318 $ 33 Unsecured — — 23 — 1 — 27 1 Real estate: One-to-four family residential 4,180 11 2,069 11 3,502 24 1,920 23 Commercial & multifamily residential: Commercial land 235 — 103 — 157 — 107 — Income property 1,966 23 7,213 74 3,427 33 6,946 136 Owner occupied 6,567 235 9,222 235 7,326 468 9,817 476 Real estate construction: One-to-four family residential: Land and acquisition 974 2 653 1 686 3 1,083 3 Residential construction 893 — — — 595 — — — Consumer 355 1 155 3 278 2 159 5 Total $ 24,401 $ 280 $ 26,371 $ 341 $ 25,634 $ 545 $ 26,377 $ 677 The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three and six months ended June 30, 2015 and 2014 : Three months ended June 30, 2015 Three months ended June 30, 2014 Number of TDR Modifications Pre-Modification Post-Modification Number of TDR Modifications Pre-Modification Post-Modification (dollars in thousands) Commercial business: Secured — $ — $ — 2 $ 546 $ 546 Real estate: One-to-four family residential 1 30 30 — — — Total 1 $ 30 $ 30 2 $ 546 $ 546 Six months ended June 30, 2015 Six months ended June 30, 2014 Number of TDR Modifications Pre-Modification Post-Modification Number of TDR Modifications Pre-Modification Post-Modification (dollars in thousands) Commercial business: Secured — $ — $ — 4 $ 759 $ 759 Real estate: One-to-four family residential 1 30 30 2 494 494 Commercial and multifamily residential: Income property — — — 1 143 126 Total 1 $ 30 $ 30 7 $ 1,396 $ 1,379 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 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. The concessions granted in the restructurings completed in the three and six month periods ending June 30, 2015 and 2014 largely consisted of maturity extensions, interest rate modifications or a combination of both. In limited circumstances, a reduction in the principal balance of the loan could also be made as a concession. 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 had no commitments to lend additional funds on loans classified as TDR as of June 30, 2015 and December 31, 2014 . The Company did not have any loans modified as TDR that defaulted within twelve months of being modified as TDR during the three and six month periods ended June 30, 2015 and 2014 . Purchased Credit Impaired Loans (“PCI Loans”) PCI 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. 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. The excess of cash flows expected to be collected over the initial fair value of purchased credit 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 is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of June 30, 2015 and December 31, 2014 : June 30, 2015 December 31, 2014 (in thousands) Commercial business $ 45,934 $ 50,334 Real estate: One-to-four family residential 29,860 31,981 Commercial and multifamily residential 116,992 140,398 Total real estate 146,852 172,379 Real estate construction: One-to-four family residential 3,040 4,353 Commercial and multifamily residential 2,249 2,588 Total real estate construction 5,289 6,941 Consumer 24,427 26,814 Subtotal of PCI loans 222,502 256,468 Less: Valuation discount resulting from acquisition accounting 20,135 25,884 Allowance for loan losses 16,174 16,336 PCI loans, net of allowance for loan losses $ 186,193 $ 214,248 The following table shows the changes in accretable yield for PCI loans for the three and six months ended June 30, 2015 and 2014 : Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (in thousands) Balance at beginning of period $ 68,726 $ 101,543 $ 73,849 $ 103,907 Accretion (5,737 ) (10,055 ) (12,056 ) (20,624 ) Disposals (959 ) — (2,052 ) (2,826 ) Reclassifications from nonaccretable difference 5,253 1,023 7,542 12,054 Balance at end of period $ 67,283 $ 92,511 $ 67,283 $ 92,511

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit	6 Months Ended
	Jun. 30, 2015
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 Text Block	Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit Loans, excluding PCI loans 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 calculated quarterly using quantitative and qualitative information about specific loan classes. The minimum required level with respect to which an entity develops a methodology to determine its ALLL is by general categories of loans, such as commercial business, real estate, and consumer. However, the Company’s methodology in determining its ALLL 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 or a recovery of previous provisions. 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 the six months ended June 30, 2015 and 2014 . 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 make revisions to our ALLL as necessary 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. PCI Loans Purchased credit impaired loans that have common risk characteristics are aggregated into loan pools. When required, we record impairment, at the pool-level, to adjust the pool’s carrying value to its net present value of expected future cash flows. Quarterly, we re-measure expected loan pool cash flows. If, due to credit deterioration, the present value of expected cash flows is less than carrying value, we reduce the loan pool’s carrying value by adjusting the ALLL with an impairment charge to earnings which is recorded as provision for loan losses. If credit quality improves and the present value of expected cash flows exceeds carrying value, we increase the loan pool’s carrying value by recapturing previously recorded ALLL, if any. See Note 5, Loans, for further discussion of the accounting for PCI loans. Credit losses attributable to draws on purchased credit impaired loans, advanced subsequent to the loan purchase date, are accounted for under ASC 450-20 and those amounts are also subject to the Company’s internal and external credit review. An ALLL is estimated in a similar manner as loans, excluding PCI loans, and a provision for loan losses is charged to earnings as necessary. The following tables show a detailed analysis of the ALLL for the three and six months ended June 30, 2015 and 2014 : Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Three months ended June 30, 2015 (in thousands) Commercial business: Secured $ 25,761 $ (2,022 ) $ 200 $ 3,769 $ 27,708 $ 1,161 $ 26,547 Unsecured 1,012 (64 ) 9 (100 ) 857 — 857 Real estate: One-to-four family residential 1,364 (289 ) 15 265 1,355 111 1,244 Commercial & multifamily residential: Commercial land 827 — — 754 1,581 — 1,581 Income property 8,440 (43 ) 7 (207 ) 8,197 — 8,197 Owner occupied 5,612 — 13 176 5,801 20 5,781 Real estate construction: One-to-four family residential: Land and acquisition 1,026 — 1 (530 ) 497 66 431 Residential construction 1,790 — 7 (839 ) 958 — 958 Commercial & multifamily residential: Income property 827 — 2 (422 ) 407 — 407 Owner occupied 499 — — (58 ) 441 — 441 Consumer 2,835 (319 ) 137 529 3,182 — 3,182 Purchased credit impaired 16,531 (2,876 ) 2,043 476 16,174 — 16,174 Unallocated 3,710 — — (1,611 ) 2,099 — 2,099 Total $ 70,234 $ (5,613 ) $ 2,434 $ 2,202 $ 69,257 $ 1,358 $ 67,899 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Six months ended June 30, 2015 (in thousands) Commercial business: Secured $ 25,923 $ (3,408 ) $ 712 $ 4,481 $ 27,708 $ 1,161 $ 26,547 Unsecured 927 (104 ) 115 (81 ) 857 — 857 Real estate: One-to-four family residential 2,281 (297 ) 27 (656 ) 1,355 111 1,244 Commercial & multifamily residential: Commercial land 799 — — 782 1,581 — 1,581 Income property 9,159 (43 ) 3,259 (4,178 ) 8,197 — 8,197 Owner occupied 5,007 — 22 772 5,801 20 5,781 Real estate construction: One-to-four family residential: Land and acquisition 1,197 — 3 (703 ) 497 66 431 Residential construction 1,860 — 33 (935 ) 958 — 958 Commercial & multifamily residential: Income property 622 — 5 (220 ) 407 — 407 Owner occupied 434 — — 7 441 — 441 Consumer 3,180 (1,210 ) 410 802 3,182 — 3,182 Purchased credit impaired 16,336 (6,976 ) 3,729 3,085 16,174 — 16,174 Unallocated 1,844 — — 255 2,099 — 2,099 Total $ 69,569 $ (12,038 ) $ 8,315 $ 3,411 $ 69,257 $ 1,358 $ 67,899 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Three months ended June 30, 2014 (in thousands) Commercial business: Secured $ 28,801 $ (1,642 ) $ 1,435 $ (3,077 ) $ 25,517 $ 128 $ 25,389 Unsecured 746 (75 ) 277 (194 ) 754 19 735 Real estate: One-to-four family residential 1,194 — 12 (123 ) 1,083 128 955 Commercial & multifamily residential: Commercial land 579 (29 ) 2 (82 ) 470 — 470 Income property 10,107 (1,934 ) 505 1,833 10,511 — 10,511 Owner occupied 4,560 — 30 399 4,989 35 4,954 Real estate construction: One-to-four family residential: Land and acquisition 580 — 2 (179 ) 403 69 334 Residential construction 696 — 440 (459 ) 677 — 677 Commercial & multifamily residential: Income property 320 — — 94 414 — 414 Owner occupied 154 — — 12 166 — 166 Consumer 2,637 (909 ) 338 577 2,643 1 2,642 Purchased credit impaired 20,129 (3,842 ) 1,997 1,517 19,801 — 19,801 Unallocated 68 — — 1,799 1,867 — 1,867 Total $ 70,571 $ (8,431 ) $ 5,038 $ 2,117 $ 69,295 $ 380 $ 68,915 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Six months ended June 30, 2014 (in thousands) Commercial business: Secured $ 31,027 $ (1,840 ) $ 1,883 $ (5,553 ) $ 25,517 $ 128 $ 25,389 Unsecured 696 (110 ) 319 (151 ) 754 19 735 Real estate: One-to-four family residential 1,252 (207 ) 40 (2 ) 1,083 128 955 Commercial & multifamily residential: Commercial land 489 (29 ) 19 (9 ) 470 — 470 Income property 9,234 (1,934 ) 518 2,693 10,511 — 10,511 Owner occupied 3,605 (1,023 ) 39 2,368 4,989 35 4,954 Real estate construction: One-to-four family residential: Land and acquisition 610 — 41 (248 ) 403 69 334 Residential construction 822 — 443 (588 ) 677 — 677 Commercial & multifamily residential: Income property 285 — — 129 414 — 414 Owner occupied 58 — — 108 166 — 166 Consumer 2,547 (1,636 ) 591 1,141 2,643 1 2,642 Purchased credit impaired 20,174 (8,115 ) 3,803 3,939 19,801 — 19,801 Unallocated 1,655 — — 212 1,867 — 1,867 Total $ 72,454 $ (14,894 ) $ 7,696 $ 4,039 $ 69,295 $ 380 $ 68,915 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: Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 (in thousands) Balance at beginning of period $ 2,655 $ 2,455 $ 2,655 $ 2,505 Net changes in the allowance for unfunded commitments and letters of credit 275 (100 ) 275 (150 ) Balance at end of period $ 2,930 $ 2,355 $ 2,930 $ 2,355 Risk Elements The extension of credit in the form of loans or other credit products to individuals and businesses is one of our principal business 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 and 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 ALLL 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 loan portfolio, excluding PCI loans, as of June 30, 2015 and December 31, 2014 : Pass Special Mention Substandard Doubtful Loss Total June 30, 2015 (in thousands) Loans, excluding PCI loans: Commercial business: Secured $ 2,082,480 $ 34,027 $ 51,919 $ — $ — $ 2,168,426 Unsecured 81,667 46 511 — — 82,224 Real estate: One-to-four family residential 172,318 53 6,242 — — 178,613 Commercial and multifamily residential: Commercial land 200,614 6,919 1,740 — — 209,273 Income property 1,301,846 4,995 7,047 — — 1,313,888 Owner occupied 833,120 8,570 17,911 — — 859,601 Real estate construction: One-to-four family residential: Land and acquisition 16,374 — 443 — — 16,817 Residential construction 107,752 — 1,360 — — 109,112 Commercial and multifamily residential: Income property 64,557 — — — — 64,557 Owner occupied 62,148 — 874 — — 63,022 Consumer 340,250 — 3,747 — — 343,997 Total $ 5,263,126 $ 54,610 $ 91,794 $ — $ — 5,409,530 Less: Allowance for loan and lease losses 53,083 Loans, excluding PCI loans, net $ 5,356,447 Pass Special Mention Substandard Doubtful Loss Total December 31, 2014 (in thousands) Loans, excluding PCI loans: Commercial business: Secured $ 1,963,210 $ 15,790 $ 54,628 $ — $ — $ 2,033,628 Unsecured 79,534 — 559 — — 80,093 Real estate: One-to-four family residential 163,914 55 7,795 — — 171,764 Commercial and multifamily residential: Commercial land 183,701 4,217 1,861 — — 189,779 Income property 1,287,729 5,885 8,385 — — 1,301,999 Owner occupied 825,694 7,876 11,171 — — 844,741 Real estate construction: One-to-four family residential: Land and acquisition 15,307 167 1,036 — — 16,510 Residential construction 96,031 909 1,581 — — 98,521 Commercial and multifamily residential: Income property 73,783 — — — — 73,783 Owner occupied 58,055 — 889 — — 58,944 Consumer 339,695 68 5,269 — — 345,032 Total $ 5,086,653 $ 34,967 $ 93,174 $ — $ — 5,214,794 Less: Allowance for loan and lease losses 53,233 Loans, excluding PCI loans, net $ 5,161,561 The following is an analysis of the credit quality of our PCI loan portfolio as of June 30, 2015 and December 31, 2014 : Pass Special Mention Substandard Doubtful Loss Total June 30, 2015 (in thousands) PCI loans: Commercial business: Secured $ 36,179 $ 212 $ 8,147 $ — $ — $ 44,538 Unsecured 1,360 — 36 — — 1,396 Real estate: One-to-four family residential 26,797 — 3,063 — — 29,860 Commercial and multifamily residential: Commercial land 8,799 — 664 — — 9,463 Income property 41,517 — 9,678 — — 51,195 Owner occupied 52,908 — 3,426 — — 56,334 Real estate construction: One-to-four family residential: Land and acquisition 1,261 — 537 — — 1,798 Residential construction 1,226 — 16 — — 1,242 Commercial and multifamily residential: Income property 1,340 — — — — 1,340 Owner occupied 909 — — — — 909 Consumer 23,023 — 1,404 — — 24,427 Total $ 195,319 $ 212 $ 26,971 $ — $ — 222,502 Less: Valuation discount resulting from acquisition accounting 20,135 Allowance for loan losses 16,174 PCI loans, net $ 186,193 Pass Special Mention Substandard Doubtful Loss Total December 31, 2014 (in thousands) PCI loans: Commercial business: Secured $ 37,927 $ 937 $ 9,223 $ — $ — $ 48,087 Unsecured 2,156 — 91 — — 2,247 Real estate: One-to-four family residential 28,822 — 3,159 — — 31,981 Commercial and multifamily residential: Commercial land 9,104 — 6,240 — — 15,344 Income property 51,435 1,892 7,186 — — 60,513 Owner occupied 58,629 346 5,566 — — 64,541 Real estate construction: One-to-four family residential: Land and acquisition 1,595 — 913 — — 2,508 Residential construction 741 — 1,104 — — 1,845 Commercial and multifamily residential: Income property 1,435 — 227 — — 1,662 Owner occupied 926 — — — — 926 Consumer 24,037 — 2,777 — — 26,814 Total $ 216,807 $ 3,175 $ 36,486 $ — $ — 256,468 Less: Valuation discount resulting from acquisition accounting 25,884 Allowance for loan losses 16,336 PCI loans, net $ 214,248

Other Real Estate Owned

Other Real Estate Owned	6 Months Ended
	Jun. 30, 2015
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Other Real Estate Owned	Other Real Estate Owned (“OREO”) The following tables set forth activity in OREO for the three and six months ended June 30, 2015 and 2014 : Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (in thousands) Balance, beginning of period $ 23,299 $ 30,553 $ 22,190 $ 35,927 Transfers in 3,143 2,090 7,836 7,841 Valuation adjustments (596 ) (974 ) (793 ) (2,554 ) Proceeds from sale of OREO property (6,484 ) (4,726 ) (11,608 ) (15,932 ) Gain on sale of OREO, net 1,255 1,311 2,992 2,972 Balance, end of period $ 20,617 $ 28,254 $ 20,617 $ 28,254 At June 30, 2015 , the carrying amount of foreclosed residential real estate properties held as a result of obtaining physical possession was $2.1 million and the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $2.5 million .

Covered Assets and FDIC Loss-sh

Covered Assets and FDIC Loss-sharing Asset	6 Months Ended
	Jun. 30, 2015
Covered Assets And FDIC Loss Sharing Asset
Covered Assets and FDIC Loss sharing Asset	FDIC Loss-sharing Asset and Covered Assets We are a party to eight loss-sharing agreements with the FDIC relating to four FDIC-assisted acquisitions. Such agreements cover a substantial portion of losses incurred on acquired covered loans and OREO. The loss-sharing agreements relate to the acquisitions of (1) Columbia River Bank in January 2010, (2) American Marine Bank in January 2010, (3) Summit Bank in May 2011, and (4) First Heritage Bank in May 2011. 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 non-single family and single family mortgage loans are in effect for five and ten years, respectively and the loss recovery provisions are in effect for eight and ten years, respectively. The loss-sharing provisions for the Columbia River Bank and American Marine Bank non-single family covered assets were effective through March 31, 2015. Accordingly, further activity will be limited to recoveries through the first quarter of 2020 for assets covered by these loss-sharing agreements. Ten years and forty-five days after the applicable acquisition dates, the Bank must 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 June 30, 2015 , the net present value of the Bank’s estimated clawback liability was $4.2 million , which was included in other liabilities on the consolidated balance sheets. At June 30, 2015 , the FDIC loss-sharing asset was comprised of a $9.0 million FDIC indemnification asset and a $344 thousand FDIC receivable. The indemnification asset represents the net present value of cash flows the Company expects to collect from the FDIC under the loss-sharing agreements and the FDIC receivable represents amounts from the FDIC for which the Company has requested reimbursement but has not yet received reimbursement. For PCI 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, for loans covered by loss-share agreements with respect to which the loss-sharing provisions are still effective, 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, for loans covered by loss-share agreements with respect to which the loss-sharing provisions are still effective, 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 three and six months ended June 30, 2015 and 2014 : Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (in thousands) Balance at beginning of period $ 14,644 $ 36,837 $ 15,174 $ 39,846 Adjustments not reflected in income: Cash received from the FDIC, net (2,862 ) (3,442 ) (3,522 ) (1,765 ) FDIC reimbursable recoveries, net (944 ) (364 ) (964 ) (231 ) Adjustments reflected in income: Amortization, net (1,376 ) (5,764 ) (3,670 ) (12,216 ) Loan impairment 1 1,214 1,532 3,151 Sale of other real estate (208 ) (965 ) (627 ) (1,721 ) Write-downs of other real estate 52 276 1,124 792 Other 37 189 297 125 Balance at end of period $ 9,344 $ 27,981 $ 9,344 $ 27,981 The following table presents information about the composition of the FDIC loss-sharing asset, the clawback liability, and the non-single family and the single family covered assets as of the date indicated: June 30, 2015 Columbia River Bank American Marine Bank Summit Bank First Heritage Bank Total (in thousands) FDIC loss-sharing asset $ 470 $ 3,158 $ 3,585 $ 2,131 $ 9,344 Clawback liability $ 4,040 $ 127 $ — $ — $ 4,167 Non-single family covered assets $ 98,008 $ 14,209 $ 13,247 $ 21,150 $ 146,614 Single family covered assets $ 9,087 $ 25,839 $ 6,432 $ 2,182 $ 43,540 Loss-sharing expiration dates: Non-single family First Quarter 2015 First Quarter 2015 Second Quarter 2016 Second Quarter 2016 Single family First Quarter 2020 First Quarter 2020 Second Quarter 2021 Second Quarter 2021 Loss recovery expiration dates: Non-single family First Quarter 2018 First Quarter 2018 Second Quarter 2019 Second Quarter 2019 Single family First Quarter 2020 First Quarter 2020 Second Quarter 2021 Second Quarter 2021

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2015
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 on July 31 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 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 periods indicated: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (in thousands) Goodwill Total goodwill (1) $ 382,537 $ 343,952 382,537 343,952 Other intangible assets, net Core deposit intangible: Gross core deposit intangible balance at beginning of period (1) 58,598 47,698 58,598 47,698 Accumulated amortization at beginning of period (30,875 ) (24,344 ) (29,058 ) (22,765 ) Core deposit intangible, net at beginning of period 27,723 23,354 29,540 24,933 CDI current period amortization (1,718 ) (1,481 ) (3,535 ) (3,060 ) Total core deposit intangible, net at end of period 26,005 21,873 26,005 21,873 Intangible assets not subject to amortization 919 919 919 919 Other intangible assets, net at end of period 26,924 22,792 26,924 22,792 Total goodwill and other intangible assets at end of period $ 409,461 $ 366,744 $ 409,461 $ 366,744 __________ (1) See Note 3, Business Combinations, for additional information regarding goodwill and intangible assets recorded related to the acquisition of Intermountain on November 1, 2014. The following table provides the estimated future amortization expense of core deposit intangibles for the remaining six months ending December 31, 2015 and the succeeding four years: Amount (in thousands) Year ending December 31, 2015 $ 3,347 2016 5,945 2017 4,913 2018 3,855 2019 2,951

Derivatives and Balance Sheet O

Derivatives and Balance Sheet Offsetting	6 Months Ended
	Jun. 30, 2015
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Derivatives and Hedging Activities	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 June 30, 2015 and December 31, 2014 was $216.2 million and $215.6 million , respectively. During the three and six months ended June 30, 2015 , a mark-to-market gain of $9 thousand and $4 thousand , respectively were recorded to other noninterest expense. There were no earnings impacts for the three or six month periods ending June 30, 2014 . The following table presents the fair value of derivatives not designated as hedging instruments at June 30, 2015 and December 31, 2014 : Asset Derivatives Liability Derivatives June 30, 2015 December 31, 2014 June 30, 2015 December 31, 2014 Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value (in thousands) Interest rate contracts Other assets $ 10,659 Other assets $ 11,800 Other liabilities $ 10,707 Other liabilities $ 11,851 The Company is party to interest rate contracts 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 June 30, 2015 (in thousands) Assets Interest rate contracts $ 10,659 $ — $ 10,659 $ — $ 10,659 Liabilities Interest rate contracts $ 10,707 $ — $ 10,707 $ (10,707 ) $ — Repurchase agreements $ 92,230 $ — $ 92,230 $ (92,230 ) $ — December 31, 2014 Assets Interest rate contracts $ 11,800 $ — $ 11,800 $ — $ 11,800 Liabilities Interest rate contracts $ 11,851 $ — $ 11,851 $ (11,851 ) $ — Repurchase agreements $ 105,080 $ — $ 105,080 $ (105,080 ) $ — The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements: Remaining contractual maturity of the agreements Overnight and continuous Up to 30 days 30 - 90 days Greater than 90 days Total June 30, 2015 (in thousands) Class of collateral pledged for repurchase agreements U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 67,230 $ — $ — $ 25,000 $ 92,230 Gross amount of recognized liabilities for repurchase agreements 92,230 Amounts related to agreements not included in offsetting disclosure $ — The collateral utilized for the Company’s repurchase agreements is subject to market fluctuations as well as prepayments of principal. The Company monitors the risk of the fair value of its pledged collateral falling below acceptable amounts based on the type of the underlying repurchase agreement. The pledged collateral related to the Company’s term wholesale repurchase agreement, which matures in 2018, is monitored on a monthly basis and additional capital is pledged when necessary. The pledged collateral related to the Company’s sweep repurchase agreements, which mature on a daily basis, is monitored on a daily basis as the underlying sweep accounts can have daily transaction activity and the amount of pledged collateral is adjusted as necessary.

Shareholders' Equity

Shareholders' Equity	6 Months Ended
	Jun. 30, 2015
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders’ Equity Preferred Stock. In conjunction with the 2013 acquisition of West Coast, the Company issued 8,782 shares of mandatorily convertible cumulative participating preferred stock, Series B (“Series B Preferred Stock”). 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. Dividends. On January 29, 2015 , the Company declared a quarterly cash dividend of $0.16 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.14 per common share and common share equivalent for holders of preferred stock, both payable on February 25, 2015 to shareholders of record at the close of business on February 11, 2015 . On April 22, 2015 , the Company declared a regular quarterly cash dividend of $0.18 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.16 per common share and common share equivalent for holders of preferred stock, both payable on May 20, 2015 to shareholders of record at the close of business on May 6, 2015 . Subsequent to quarter end, on July 23, 2015 , the Company declared a regular quarterly cash dividend of $0.18 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.16 per common share and common share equivalent for holders of preferred stock, both payable on August 19, 2015 to shareholders of record at the close of business on August 5, 2015 . 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.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income (Loss) The following table shows changes in accumulated other comprehensive income (loss) by component for the three and six month periods ended June 30, 2015 and 2014 : Unrealized Gains and Losses on Available-for-Sale Securities (1) Unrealized Gains and Losses on Pension Plan Liability (1) Total (1) Three months ended June 30, 2015 (in thousands) Beginning balance $ 16,379 $ (2,093 ) $ 14,286 Other comprehensive loss before reclassifications (11,341 ) — (11,341 ) Amounts reclassified from accumulated other comprehensive income (loss) (2) (219 ) 63 (156 ) Net current-period other comprehensive income (loss) (11,560 ) 63 (11,497 ) Ending balance $ 4,819 $ (2,030 ) $ 2,789 Three months ended June 30, 2014 Beginning balance $ (3,131 ) $ (1,912 ) $ (5,043 ) Other comprehensive income before reclassifications 8,768 — 8,768 Amounts reclassified from accumulated other comprehensive income (loss) (2) (189 ) 24 (165 ) Net current-period other comprehensive income 8,579 24 8,603 Ending balance $ 5,448 $ (1,888 ) $ 3,560 Six months ended June 30, 2015 Beginning balance $ 7,462 $ (1,841 ) $ 5,621 Other comprehensive loss before reclassifications (1,965 ) (280 ) (2,245 ) Amounts reclassified from accumulated other comprehensive income (loss) (2) (678 ) 91 (587 ) Net current-period other comprehensive loss (2,643 ) (189 ) (2,832 ) Ending balance $ 4,819 $ (2,030 ) $ 2,789 Six months ended June 30, 2014 Beginning balance $ (10,108 ) $ (1,936 ) $ (12,044 ) Other comprehensive income before reclassifications 15,887 — 15,887 Amounts reclassified from accumulated other comprehensive income (loss) (2) (331 ) 48 (283 ) Net current-period other comprehensive income 15,556 48 15,604 Ending balance $ 5,448 $ (1,888 ) $ 3,560 __________ (1) All amounts are net of tax. Amounts in parenthesis indicate debits. (2) See following table for details about these reclassifications. The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and six month periods ended June 30, 2015 and 2014 : Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended June 30, Six Months Ended June 30, Affected line Item in the Consolidated 2015 2014 2015 2014 Statement of Income (in thousands) Unrealized gains and losses on available-for-sale securities Investment securities gains $ 343 $ 296 $ 1,064 $ 519 Investment securities gains, net 343 296 1,064 519 Total before tax (124 ) (107 ) (386 ) (188 ) Income tax provision $ 219 $ 189 $ 678 $ 331 Net of tax Amortization of pension plan liability Actuarial losses $ (98 ) $ (37 ) $ (142 ) $ (74 ) Compensation and employee benefits (98 ) (37 ) (142 ) (74 ) Total before tax 35 13 51 26 Income tax benefit $ (63 ) $ (24 ) $ (91 ) $ (48 ) Net of tax

Fair Value Accounting and Measu

Fair Value Accounting and Measurement	6 Months Ended
	Jun. 30, 2015
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 June 30, 2015 and December 31, 2014 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 Fair Value Measurements at Reporting Date Using Level 1 Level 2 Level 3 June 30, 2015 (in thousands) Assets Securities available for sale: U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations $ 1,041,079 $ — $ 1,041,079 $ — State and municipal debt securities 489,031 — 489,031 — U.S. government agency and government-sponsored enterprise securities 359,025 — 359,025 — U.S. government securities 20,162 20,162 — — Other securities 5,148 — 5,148 — Total securities available for sale $ 1,914,445 $ 20,162 $ 1,894,283 $ — Other assets (Interest rate contracts) $ 10,659 $ — $ 10,659 $ — Liabilities Other liabilities (Interest rate contracts) $ 10,707 $ — $ 10,707 $ — Fair value Fair Value Measurements at Reporting Date Using Level 1 Level 2 Level 3 December 31, 2014 (in thousands) Assets Securities available for sale: U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations $ 1,162,387 $ — $ 1,162,387 $ — State and municipal debt securities 496,484 — 496,484 — U.S. government agency and government-sponsored enterprise securities 413,706 — 413,706 — U.S. government securities 20,499 20,499 — — Other securities 5,181 — 5,181 — Total securities available for sale $ 2,098,257 $ 20,499 $ 2,077,758 $ — Other assets (Interest rate contracts) $ 11,800 $ — $ 11,800 $ — Liabilities Other liabilities (Interest rate contracts) $ 11,851 $ — $ 11,851 $ — There were no transfers between Level 1 and Level 2 of the valuation hierarchy during the six month periods ended June 30, 2015 and 2014 . 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 —OREO is real property that the Bank has taken ownership of in partial or full satisfaction of a loan or loans. OREO is generally measured based on the property’s fair market value as indicated by an appraisal or a letter of intent to purchase. OREO is initially recorded at the fair value less estimated costs to sell. This amount becomes the property’s new basis. Any fair value adjustments based on the property’s fair value less estimated costs to sell at the date of acquisition are charged to the ALLL, or in the event of a write-up without previous losses charged to the ALLL, a credit to earnings is recorded. Management periodically reviews OREO in an effort to ensure the property is recorded at its fair value, net of estimated costs to sell. Any fair value adjustments subsequent to acquisition are charged or credited to earnings. The initial and subsequent 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 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 tables set forth information related to the Company’s assets that were measured using fair value estimates on a nonrecurring basis during the current and prior year quarterly periods: Fair value at June 30, 2015 Fair Value Measurements at Reporting Date Using Losses During the Three Months Ended Losses During the Six Months Ended Level 1 Level 2 Level 3 (in thousands) Impaired loans $ — $ — $ — $ — $ 1,138 $ 1,138 OREO 1,664 — — 1,664 611 655 $ 1,664 $ — $ — $ 1,664 $ 1,749 $ 1,793 Fair value at Fair Value Measurements at Reporting Date Using Losses During the Three Months Ended Losses During the Six Months Ended June 30, 2014 Level 1 Level 2 Level 3 (in thousands) OREO (1) $ 3,226 $ — $ — $ 3,226 $ 862 $ 1,602 $ 3,226 $ — $ — $ 3,226 $ 862 $ 1,602 __________ (1) Reclassified to conform to the current period’s presentation. The reclassification was limited to combining historically reported “Noncovered OREO” and “Covered OREO” into one line item for OREO. 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 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 changes in any valuation allowances from updated appraisals that were recorded 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, along with the valuation techniques used, are shown in the following table: Fair value at June 30, 2015 Valuation Technique Unobservable Input Range (Weighted Average) (1) (dollars in thousands) Impaired loans (2) $ — Fair Market Value of Collateral Adjustment to Stated value 100% OREO 1,664 Fair Market Value of Collateral Adjustment to Appraisal Value N/A (3) (1) Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable, inventory and equipment). (2) As there was only one impaired loan remeasured, a range of discounts could not be provided. The collateral for this loan consisted of non-proprietary software. (3) Quantitative disclosures are not provided for 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) (dollars in thousands) OREO $ 3,226 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, inventory and equipment). (2) Quantitative disclosures are not provided for OREO 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 June 30, 2015 or December 31, 2014 , 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 PCI loans, fair value is estimated by discounting the expected future cash flows using a lending rate that would have been offered on June 30, 2015 (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 swap positions are valued in models, which use readily observable market parameters as their basis (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 term repurchase agreements is estimated based on discounting the future cash flows using the market rate currently offered. The carrying amount of sweep repurchase agreements approximates their fair values due to the short period of time between repricing dates (Level 2). Other Borrowings — Other borrowings are trust preferred obligations assumed by the Company in the Intermountain acquisition. The fair value is estimated as the carrying value as these obligations are redeemable and a market participant would expect redemption in the near-term (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 as well as assumptions used by the Company in estimating fair value at June 30, 2015 and December 31, 2014 : June 30, 2015 Carrying Fair Level 1 Level 2 Level 3 (in thousands) Assets Cash and due from banks $ 172,139 $ 172,139 $ 172,139 $ — $ — Interest-earning deposits with banks 5,564 5,564 5,564 — — Securities available for sale 1,914,445 1,914,445 20,162 1,894,283 — FHLB stock 11,803 11,803 — 11,803 — Loans held for sale 4,220 4,220 — 4,220 — Loans 5,542,640 5,624,212 — — 5,624,212 FDIC loss-sharing asset 9,344 1,356 — — 1,356 Interest rate contracts 10,659 10,659 — 10,659 — Liabilities Deposits $ 7,044,373 $ 7,041,949 $ 6,562,670 $ 479,279 $ — FHLB Advances 45,549 46,057 — 46,057 — Repurchase agreements 92,230 93,175 — 93,175 — Interest rate contracts 10,707 10,707 — 10,707 — December 31, 2014 Carrying Fair Level 1 Level 2 Level 3 (in thousands) Assets Cash and due from banks $ 171,221 $ 171,221 $ 171,221 $ — $ — Interest-earning deposits with banks 16,949 16,949 16,949 — — Securities available for sale 2,098,257 2,098,257 20,499 2,077,758 — FHLB stock 33,365 33,365 — 33,365 — Loans held for sale 1,116 1,116 — 1,116 — Loans 5,375,809 5,516,286 — — 5,516,286 FDIC loss-sharing asset 15,174 4,054 — — 4,054 Interest rate contracts 11,800 11,800 — 11,800 — Liabilities Deposits $ 6,924,722 $ 6,921,804 $ 6,416,017 $ 505,787 $ — FHLB Advances 216,568 217,296 — 217,296 — Repurchase agreements 105,080 106,171 — 106,171 — Other borrowings 8,248 8,248 — 8,248 — Interest rate contracts 11,851 11,851 — 11,851 —

Earnings per Common Share

Earnings per Common Share	6 Months Ended
	Jun. 30, 2015
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 three and six months ended June 30, 2015 and 2014 : Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 (in thousands except per share) Basic EPS: Net income $ 21,946 $ 21,227 $ 46,307 $ 41,071 Less: Earnings allocated to participating securities: Preferred Shares 39 41 82 79 Nonvested restricted shares 248 206 475 378 Earnings allocated to common shareholders $ 21,659 $ 20,980 $ 45,750 $ 40,614 Weighted average common shares outstanding 57,055 52,088 56,999 51,600 Basic earnings per common share $ 0.38 $ 0.40 $ 0.80 $ 0.79 Diluted EPS: Earnings allocated to common shareholders (1) $ 21,659 $ 20,981 $ 45,750 $ 40,617 Weighted average common shares outstanding 57,055 52,088 56,999 51,600 Dilutive effect of equity awards 14 406 13 863 Weighted average diluted common shares outstanding 57,069 52,494 57,012 52,463 Diluted earnings per common share $ 0.38 $ 0.40 $ 0.80 $ 0.77 Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive 37 63 45 73 __________ (1) Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options and warrants to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.

Subsequent Event

Subsequent Event	6 Months Ended
	Jun. 30, 2015
Subsequent Event [Line Items]
Subsequent Events [Text Block]	Subsequent Event Subsequent events are events or transactions that occur after the balance sheet date but before financial statements are issued. Recognized subsequent events are events or transactions that provide additional evidence about conditions that existed at the date of the balance sheet, including the estimates inherent in the process of preparing financial statements. Nonrecognized subsequent events are events that provide evidence about conditions that did not exist at the date of the balance sheet but arose after that date. On August 6, 2015 , we filed a shelf registration statement with the Securities and Exchange Commission registering an unlimited amount of any combination of debt or equity securities, depositary shares, purchase contracts, units and warrants in one or more offerings. Specific information regarding the terms of and the securities being offered will be provided at the time of any offering. Proceeds from future offerings are expected to be used for general corporate purposes, including, but not limited to, the repayment of debt, repurchasing or redeeming outstanding securities, working capital, funding future acquisitions or other purposes identified at the time of any offering.

Business combinations (Tables)

Business combinations (Tables)	6 Months Ended
	Jun. 30, 2015
Business Acquisition, Supplemental Pro Forma Information [Line Items]
Business Acquisition, Pro Forma Information [Table Text Block]	For illustrative purposes only, the following table presents certain unaudited pro forma information for the six month period ended June 30, 2014 . This unaudited pro forma information was calculated as if Intermountain had been acquired as of the beginning of the year prior to the date of acquisition. The unaudited pro forma information combines the historical results of Intermountain with the Company’s consolidated historical results and includes certain adjustments reflecting the estimated impact of certain fair value adjustments for the respective period. The pro forma information is not indicative of what would have occurred had the acquisition occurred as of the beginning of the year prior to the acquisition. 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 investment securities been recorded at fair value as of the beginning of the year prior to the date of acquisition. 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 would have differed from the unaudited pro forma information presented. Unaudited Pro Forma Six Months Ended June 30, 2014 (in thousands except per share) Total revenues (net interest income plus noninterest income) $ 197,723 Net income $ 43,719 Earnings per share - basic $ 0.78 Earnings per share - diluted $ 0.77
Intermountain Community Bancorp [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: November 1, 2014 (in thousands) Purchase price as of November 1, 2014 $ 131,935 Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value: Cash and cash equivalents $ 47,283 Investment securities 299,458 Federal Home Loan Bank stock 2,124 Acquired loans 502,595 Interest receivable 4,656 Premises and equipment 20,696 Other real estate owned 2,752 Core deposit intangible 10,900 Other assets 35,353 Deposits (736,795 ) Other borrowings (22,904 ) Securities sold under agreements to repurchase (59,043 ) Other liabilities (13,725 ) Total fair value of identifiable net assets 93,350 Goodwill $ 38,585
Business Acquisition, Supplemental Pro Forma Information [Line Items]
Business Acquisition, Integration, Restructuring and Other Related Costs [Text Block]	The following table shows the impact of the acquisition-related expenses related to the acquisition of Intermountain for the three and six month periods ended June 30, 2015 to the various components of noninterest expense: Three Months Ended June 30, Six Months Ended June 30, 2015 2015 (in thousands) Noninterest Expense Compensation and employee benefits $ 3,035 $ 3,308 Occupancy 804 1,303 Advertising and promotion 247 343 Data processing and communications 180 1,738 Legal and professional fees 633 1,018 Other 744 835 Total impact of acquisition-related costs to noninterest expense $ 5,643 $ 8,545

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2015
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 (in thousands) June 30, 2015 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 1,042,134 $ 8,427 $ (9,482 ) $ 1,041,079 State and municipal securities 479,847 11,184 (2,000 ) 489,031 U.S. government agency and government-sponsored enterprise securities 359,714 1,195 (1,884 ) 359,025 U.S. government securities 20,424 — (262 ) 20,162 Other securities 5,284 23 (159 ) 5,148 Total $ 1,907,403 $ 20,829 $ (13,787 ) $ 1,914,445 December 31, 2014 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 1,160,378 $ 10,219 $ (8,210 ) $ 1,162,387 State and municipal securities 483,578 14,432 (1,526 ) 496,484 U.S. government agency and government-sponsored enterprise securities 416,919 856 (4,069 ) 413,706 U.S. government securities 20,910 — (411 ) 20,499 Other securities 5,284 20 (123 ) 5,181 Total $ 2,087,069 $ 25,527 $ (14,339 ) $ 2,098,257
Schedule of gross realized gains and losses on sales and calls of securities available for sale	The following table provides the gross realized gains and losses on the sales of securities for the periods indicated: Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 (in thousands) Gross realized gains $ 343 $ 296 $ 1,073 $ 519 Gross realized losses — — (9 ) — Net realized gains $ 343 $ 296 $ 1,064 $ 519
Schedule of Contractual Maturities of Investment Securities Available for Sale	The scheduled contractual maturities of investment securities available for sale at June 30, 2015 are presented as follows: June 30, 2015 Amortized Cost Fair Value (in thousands) Due within one year $ 20,112 $ 20,399 Due after one year through five years 391,397 392,321 Due after five years through ten years 535,833 539,403 Due after ten years 954,777 957,174 Other securities with no stated maturity 5,284 5,148 Total investment securities available-for-sale $ 1,907,403 $ 1,914,445
Carrying Value of Securities Pledged As Collateral	The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law: June 30, 2015 (in thousands) Washington and Oregon State to secure public deposits $ 331,431 Federal Reserve Bank to secure borrowings 55,508 Other securities pledged 149,327 Total securities pledged as collateral $ 536,266 The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements: Remaining contractual maturity of the agreements Overnight and continuous Up to 30 days 30 - 90 days Greater than 90 days Total June 30, 2015 (in thousands) Class of collateral pledged for repurchase agreements U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 67,230 $ — $ — $ 25,000 $ 92,230 Gross amount of recognized liabilities for repurchase agreements 92,230 Amounts related to agreements not included in offsetting disclosure $ —
Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses	The following table shows 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 June 30, 2015 and December 31, 2014 : Less than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized (in thousands) June 30, 2015 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 290,497 $ (2,468 ) $ 200,514 $ (7,014 ) $ 491,011 $ (9,482 ) State and municipal securities 123,367 (1,020 ) 29,701 (980 ) 153,068 (2,000 ) U.S. government agency and government-sponsored enterprise securities 128,033 (418 ) 100,277 (1,466 ) 228,310 (1,884 ) U.S. government securities — — 19,613 (262 ) 19,613 (262 ) Other securities 2,304 (11 ) 2,807 (148 ) 5,111 (159 ) Total $ 544,201 $ (3,917 ) $ 352,912 $ (9,870 ) $ 897,113 $ (13,787 ) December 31, 2014 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 258,825 $ (1,287 ) $ 279,015 $ (6,924 ) $ 537,840 $ (8,211 ) State and municipal securities 71,026 (543 ) 44,148 (982 ) 115,174 (1,525 ) U.S. government agency and government-sponsored enterprise securities 105,250 (518 ) 216,221 (3,551 ) 321,471 (4,069 ) U.S. government securities — — 19,450 (411 ) 19,450 (411 ) Other securities 2,313 (2 ) 2,834 (121 ) 5,147 (123 ) Total $ 437,414 $ (2,350 ) $ 561,668 $ (11,989 ) $ 999,082 $ (14,339 )

Loans (Tables)

Loans (Tables)	6 Months Ended
	Jun. 30, 2015
Financing Receivable, Recorded Investment [Line Items]
Analysis of Loan Portfolio by Major Types of Loans	June 30, 2015 December 31, 2014 Loans, excluding PCI loans PCI Loans Total Loans, excluding PCI loans PCI Loans Total (in thousands) Commercial business $ 2,255,468 $ 41,221 $ 2,296,689 $ 2,119,565 $ 44,505 $ 2,164,070 Real estate: One-to-four family residential 181,849 25,740 207,589 175,571 26,993 202,564 Commercial and multifamily residential 2,406,594 108,578 2,515,172 2,363,541 128,769 2,492,310 Total real estate 2,588,443 134,318 2,722,761 2,539,112 155,762 2,694,874 Real estate construction: One-to-four family residential 127,311 2,882 130,193 116,866 4,021 120,887 Commercial and multifamily residential 129,302 2,020 131,322 134,443 2,321 136,764 Total real estate construction 256,613 4,902 261,515 251,309 6,342 257,651 Consumer 358,365 21,926 380,291 364,182 23,975 388,157 Less: Net unearned income (49,359 ) — (49,359 ) (59,374 ) — (59,374 ) Total loans, net of unearned income 5,409,530 202,367 5,611,897 5,214,794 230,584 5,445,378 Less: Allowance for loan and lease losses (53,083 ) (16,174 ) (69,257 ) (53,233 ) (16,336 ) (69,569 ) Total loans, net $ 5,356,447 $ 186,193 $ 5,542,640 $ 5,161,561 $ 214,248 $ 5,375,809 Loans held for sale $ 4,220 $ — $ 4,220 $ 1,116 $ — $ 1,116
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Analysis of Nonaccrual Loans	The following is an analysis of nonaccrual loans as of June 30, 2015 and December 31, 2014 : June 30, 2015 December 31, 2014 Recorded Unpaid Principal Recorded Unpaid Principal (in thousands) Commercial business: Secured $ 13,018 $ 17,139 $ 16,552 $ 21,453 Unsecured 521 673 247 269 Real estate: One-to-four family residential 4,193 5,985 2,822 5,680 Commercial & multifamily residential: Commercial land 1,561 1,704 821 1,113 Income property 1,276 1,331 3,200 5,521 Owner occupied 972 1,131 3,826 5,837 Real estate construction: One-to-four family residential: Land and acquisition 862 866 95 112 Residential construction 1,075 1,222 370 370 Commercial & multifamily residential: Owner occupied 469 489 480 489 Consumer 1,799 2,176 2,939 3,930 Total $ 25,746 $ 32,716 $ 31,352 $ 44,774
Analysis of the Aged Loan Portfolio	June 30, 2015 and December 31, 2014 : Current 30 - 59 60 - 89 Greater Total Nonaccrual Total Loans June 30, 2015 (in thousands) Commercial business: Secured $ 2,149,972 $ 3,847 $ 1,589 $ — $ 5,436 $ 13,018 $ 2,168,426 Unsecured 81,433 270 — — 270 521 82,224 Real estate: One-to-four family residential 172,268 2,024 128 — 2,152 4,193 178,613 Commercial & multifamily residential: Commercial land 206,558 1,154 — — 1,154 1,561 209,273 Income property 1,310,441 1,756 415 — 2,171 1,276 1,313,888 Owner occupied 857,764 589 276 — 865 972 859,601 Real estate construction: One-to-four family residential: Land and acquisition 15,955 — — — — 862 16,817 Residential construction 107,279 758 — — 758 1,075 109,112 Commercial & multifamily residential: Income property 64,557 — — — — — 64,557 Owner occupied 61,572 981 — — 981 469 63,022 Consumer 341,606 444 148 — 592 1,799 343,997 Total $ 5,369,405 $ 11,823 $ 2,556 $ — $ 14,379 $ 25,746 $ 5,409,530 Current 30 - 59 60 - 89 Greater Total Nonaccrual Total Loans December 31, 2014 (in thousands) Commercial business: Secured $ 2,004,418 $ 5,137 $ 6,149 $ 1,372 $ 12,658 $ 16,552 $ 2,033,628 Unsecured 79,661 185 — — 185 247 80,093 Real estate: One-to-four family residential 167,197 1,700 45 — 1,745 2,822 171,764 Commercial & multifamily residential: Commercial land 187,470 1,454 34 — 1,488 821 189,779 Income property 1,294,982 3,031 786 — 3,817 3,200 1,301,999 Owner occupied 839,689 937 289 — 1,226 3,826 844,741 Real estate construction: One-to-four family residential: Land and acquisition 15,462 953 — — 953 95 16,510 Residential construction 97,821 326 — 4 330 370 98,521 Commercial & multifamily residential: Income property 73,783 — — — — — 73,783 Owner occupied 57,470 — 994 — 994 480 58,944 Consumer 341,032 933 118 10 1,061 2,939 345,032 Total $ 5,158,985 $ 14,656 $ 8,415 $ 1,386 $ 24,457 $ 31,352 $ 5,214,794
Impaired Financing Receivables	The following is an analysis of impaired loans as of June 30, 2015 and December 31, 2014 : Recorded Investment Recorded Investment Impaired Loans With Impaired Loans Without Recorded Unpaid Related Recorded Unpaid June 30, 2015 (in thousands) Commercial business: Secured $ 2,160,836 $ 7,590 $ 1,230 $ 1,231 $ 1,161 $ 6,360 $ 8,169 Unsecured 82,224 — — — — — — Real estate: One-to-four family residential 174,430 4,183 416 458 111 3,767 4,428 Commercial & multifamily residential: Commercial land 209,273 — — — — — — Income property 1,311,944 1,944 — — — 1,944 2,326 Owner occupied 853,498 6,103 575 574 20 5,528 8,008 Real estate construction: One-to-four family residential: Land and acquisition 15,849 968 107 107 66 861 866 Residential construction 108,219 893 — — — 893 893 Commercial & multifamily residential: Income property 64,557 — — — — — — Owner occupied 63,022 — — — — — — Consumer 343,971 26 — — — 26 105 Total $ 5,387,823 $ 21,707 $ 2,328 $ 2,370 $ 1,358 $ 19,379 $ 24,795 Recorded Investment Recorded Investment Impaired Loans With Impaired Loans Without Recorded Unpaid Related Recorded Unpaid December 31, 2014 (in thousands) Commercial business: Secured $ 2,023,104 $ 10,524 $ 99 $ 99 $ 25 $ 10,425 $ 12,410 Unsecured 80,091 2 2 2 2 — — Real estate: One-to-four family residential 169,619 2,145 424 465 120 1,721 2,370 Commercial & multifamily residential: Commercial land 189,779 — — — — — — Income property 1,295,650 6,349 — — — 6,349 10,720 Owner occupied 835,895 8,846 582 582 27 8,264 12,732 Real estate construction: One-to-four family residential: Land and acquisition 16,401 109 109 109 67 — — Residential construction 98,521 — — — — — — Commercial & multifamily residential: Income property 73,783 — — — — — — Owner occupied 58,944 — — — — — — Consumer 344,908 124 — — — 124 201 Total $ 5,186,695 $ 28,099 $ 1,216 $ 1,257 $ 241 $ 26,883 $ 38,433 The following table provides additional information on impaired loans for the three and six month periods indicated: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized (in thousands) Commercial business: Secured $ 9,231 $ 8 $ 6,933 $ 17 $ 9,662 $ 15 $ 6,318 $ 33 Unsecured — — 23 — 1 — 27 1 Real estate: One-to-four family residential 4,180 11 2,069 11 3,502 24 1,920 23 Commercial & multifamily residential: Commercial land 235 — 103 — 157 — 107 — Income property 1,966 23 7,213 74 3,427 33 6,946 136 Owner occupied 6,567 235 9,222 235 7,326 468 9,817 476 Real estate construction: One-to-four family residential: Land and acquisition 974 2 653 1 686 3 1,083 3 Residential construction 893 — — — 595 — — — Consumer 355 1 155 3 278 2 159 5 Total $ 24,401 $ 280 $ 26,371 $ 341 $ 25,634 $ 545 $ 26,377 $ 677
Analysis of loans classified as Troubled Debt Restructurings (“TDR”)	Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized (in thousands) Commercial business: Secured $ 9,231 $ 8 $ 6,933 $ 17 $ 9,662 $ 15 $ 6,318 $ 33 Unsecured — — 23 — 1 — 27 1 Real estate: One-to-four family residential 4,180 11 2,069 11 3,502 24 1,920 23 Commercial & multifamily residential: Commercial land 235 — 103 — 157 — 107 — Income property 1,966 23 7,213 74 3,427 33 6,946 136 Owner occupied 6,567 235 9,222 235 7,326 468 9,817 476 Real estate construction: One-to-four family residential: Land and acquisition 974 2 653 1 686 3 1,083 3 Residential construction 893 — — — 595 — — — Consumer 355 1 155 3 278 2 159 5 Total $ 24,401 $ 280 $ 26,371 $ 341 $ 25,634 $ 545 $ 26,377 $ 677 The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three and six months ended June 30, 2015 and 2014 : Three months ended June 30, 2015 Three months ended June 30, 2014 Number of TDR Modifications Pre-Modification Post-Modification Number of TDR Modifications Pre-Modification Post-Modification (dollars in thousands) Commercial business: Secured — $ — $ — 2 $ 546 $ 546 Real estate: One-to-four family residential 1 30 30 — — — Total 1 $ 30 $ 30 2 $ 546 $ 546 Six months ended June 30, 2015 Six months ended June 30, 2014 Number of TDR Modifications Pre-Modification Post-Modification Number of TDR Modifications Pre-Modification Post-Modification (dollars in thousands) Commercial business: Secured — $ — $ — 4 $ 759 $ 759 Real estate: One-to-four family residential 1 30 30 2 494 494 Commercial and multifamily residential: Income property — — — 1 143 126 Total 1 $ 30 $ 30 7 $ 1,396 $ 1,379
Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Analysis of Loan Portfolio by Major Types of Loans	The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of June 30, 2015 and December 31, 2014 : June 30, 2015 December 31, 2014 (in thousands) Commercial business $ 45,934 $ 50,334 Real estate: One-to-four family residential 29,860 31,981 Commercial and multifamily residential 116,992 140,398 Total real estate 146,852 172,379 Real estate construction: One-to-four family residential 3,040 4,353 Commercial and multifamily residential 2,249 2,588 Total real estate construction 5,289 6,941 Consumer 24,427 26,814 Subtotal of PCI loans 222,502 256,468 Less: Valuation discount resulting from acquisition accounting 20,135 25,884 Allowance for loan losses 16,174 16,336 PCI loans, net of allowance for loan losses $ 186,193 $ 214,248
Changes in Accretable Yield for Acquired Loans	The following table shows the changes in accretable yield for PCI loans for the three and six months ended June 30, 2015 and 2014 : Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (in thousands) Balance at beginning of period $ 68,726 $ 101,543 $ 73,849 $ 103,907 Accretion (5,737 ) (10,055 ) (12,056 ) (20,624 ) Disposals (959 ) — (2,052 ) (2,826 ) Reclassifications from nonaccretable difference 5,253 1,023 7,542 12,054 Balance at end of period $ 67,283 $ 92,511 $ 67,283 $ 92,511

Allowance for Loan and Lease 27

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Tables)	6 Months Ended
	Jun. 30, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Credit Losses on Financing Receivables	The following tables show a detailed analysis of the ALLL for the three and six months ended June 30, 2015 and 2014 : Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Three months ended June 30, 2015 (in thousands) Commercial business: Secured $ 25,761 $ (2,022 ) $ 200 $ 3,769 $ 27,708 $ 1,161 $ 26,547 Unsecured 1,012 (64 ) 9 (100 ) 857 — 857 Real estate: One-to-four family residential 1,364 (289 ) 15 265 1,355 111 1,244 Commercial & multifamily residential: Commercial land 827 — — 754 1,581 — 1,581 Income property 8,440 (43 ) 7 (207 ) 8,197 — 8,197 Owner occupied 5,612 — 13 176 5,801 20 5,781 Real estate construction: One-to-four family residential: Land and acquisition 1,026 — 1 (530 ) 497 66 431 Residential construction 1,790 — 7 (839 ) 958 — 958 Commercial & multifamily residential: Income property 827 — 2 (422 ) 407 — 407 Owner occupied 499 — — (58 ) 441 — 441 Consumer 2,835 (319 ) 137 529 3,182 — 3,182 Purchased credit impaired 16,531 (2,876 ) 2,043 476 16,174 — 16,174 Unallocated 3,710 — — (1,611 ) 2,099 — 2,099 Total $ 70,234 $ (5,613 ) $ 2,434 $ 2,202 $ 69,257 $ 1,358 $ 67,899 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Six months ended June 30, 2015 (in thousands) Commercial business: Secured $ 25,923 $ (3,408 ) $ 712 $ 4,481 $ 27,708 $ 1,161 $ 26,547 Unsecured 927 (104 ) 115 (81 ) 857 — 857 Real estate: One-to-four family residential 2,281 (297 ) 27 (656 ) 1,355 111 1,244 Commercial & multifamily residential: Commercial land 799 — — 782 1,581 — 1,581 Income property 9,159 (43 ) 3,259 (4,178 ) 8,197 — 8,197 Owner occupied 5,007 — 22 772 5,801 20 5,781 Real estate construction: One-to-four family residential: Land and acquisition 1,197 — 3 (703 ) 497 66 431 Residential construction 1,860 — 33 (935 ) 958 — 958 Commercial & multifamily residential: Income property 622 — 5 (220 ) 407 — 407 Owner occupied 434 — — 7 441 — 441 Consumer 3,180 (1,210 ) 410 802 3,182 — 3,182 Purchased credit impaired 16,336 (6,976 ) 3,729 3,085 16,174 — 16,174 Unallocated 1,844 — — 255 2,099 — 2,099 Total $ 69,569 $ (12,038 ) $ 8,315 $ 3,411 $ 69,257 $ 1,358 $ 67,899 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Three months ended June 30, 2014 (in thousands) Commercial business: Secured $ 28,801 $ (1,642 ) $ 1,435 $ (3,077 ) $ 25,517 $ 128 $ 25,389 Unsecured 746 (75 ) 277 (194 ) 754 19 735 Real estate: One-to-four family residential 1,194 — 12 (123 ) 1,083 128 955 Commercial & multifamily residential: Commercial land 579 (29 ) 2 (82 ) 470 — 470 Income property 10,107 (1,934 ) 505 1,833 10,511 — 10,511 Owner occupied 4,560 — 30 399 4,989 35 4,954 Real estate construction: One-to-four family residential: Land and acquisition 580 — 2 (179 ) 403 69 334 Residential construction 696 — 440 (459 ) 677 — 677 Commercial & multifamily residential: Income property 320 — — 94 414 — 414 Owner occupied 154 — — 12 166 — 166 Consumer 2,637 (909 ) 338 577 2,643 1 2,642 Purchased credit impaired 20,129 (3,842 ) 1,997 1,517 19,801 — 19,801 Unallocated 68 — — 1,799 1,867 — 1,867 Total $ 70,571 $ (8,431 ) $ 5,038 $ 2,117 $ 69,295 $ 380 $ 68,915 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Six months ended June 30, 2014 (in thousands) Commercial business: Secured $ 31,027 $ (1,840 ) $ 1,883 $ (5,553 ) $ 25,517 $ 128 $ 25,389 Unsecured 696 (110 ) 319 (151 ) 754 19 735 Real estate: One-to-four family residential 1,252 (207 ) 40 (2 ) 1,083 128 955 Commercial & multifamily residential: Commercial land 489 (29 ) 19 (9 ) 470 — 470 Income property 9,234 (1,934 ) 518 2,693 10,511 — 10,511 Owner occupied 3,605 (1,023 ) 39 2,368 4,989 35 4,954 Real estate construction: One-to-four family residential: Land and acquisition 610 — 41 (248 ) 403 69 334 Residential construction 822 — 443 (588 ) 677 — 677 Commercial & multifamily residential: Income property 285 — — 129 414 — 414 Owner occupied 58 — — 108 166 — 166 Consumer 2,547 (1,636 ) 591 1,141 2,643 1 2,642 Purchased credit impaired 20,174 (8,115 ) 3,803 3,939 19,801 — 19,801 Unallocated 1,655 — — 212 1,867 — 1,867 Total $ 72,454 $ (14,894 ) $ 7,696 $ 4,039 $ 69,295 $ 380 $ 68,915
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: Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 (in thousands) Balance at beginning of period $ 2,655 $ 2,455 $ 2,655 $ 2,505 Net changes in the allowance for unfunded commitments and letters of credit 275 (100 ) 275 (150 ) Balance at end of period $ 2,930 $ 2,355 $ 2,930 $ 2,355
Financing Receivable Credit Quality Indicators	The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of June 30, 2015 and December 31, 2014 : Pass Special Mention Substandard Doubtful Loss Total June 30, 2015 (in thousands) Loans, excluding PCI loans: Commercial business: Secured $ 2,082,480 $ 34,027 $ 51,919 $ — $ — $ 2,168,426 Unsecured 81,667 46 511 — — 82,224 Real estate: One-to-four family residential 172,318 53 6,242 — — 178,613 Commercial and multifamily residential: Commercial land 200,614 6,919 1,740 — — 209,273 Income property 1,301,846 4,995 7,047 — — 1,313,888 Owner occupied 833,120 8,570 17,911 — — 859,601 Real estate construction: One-to-four family residential: Land and acquisition 16,374 — 443 — — 16,817 Residential construction 107,752 — 1,360 — — 109,112 Commercial and multifamily residential: Income property 64,557 — — — — 64,557 Owner occupied 62,148 — 874 — — 63,022 Consumer 340,250 — 3,747 — — 343,997 Total $ 5,263,126 $ 54,610 $ 91,794 $ — $ — 5,409,530 Less: Allowance for loan and lease losses 53,083 Loans, excluding PCI loans, net $ 5,356,447 Pass Special Mention Substandard Doubtful Loss Total December 31, 2014 (in thousands) Loans, excluding PCI loans: Commercial business: Secured $ 1,963,210 $ 15,790 $ 54,628 $ — $ — $ 2,033,628 Unsecured 79,534 — 559 — — 80,093 Real estate: One-to-four family residential 163,914 55 7,795 — — 171,764 Commercial and multifamily residential: Commercial land 183,701 4,217 1,861 — — 189,779 Income property 1,287,729 5,885 8,385 — — 1,301,999 Owner occupied 825,694 7,876 11,171 — — 844,741 Real estate construction: One-to-four family residential: Land and acquisition 15,307 167 1,036 — — 16,510 Residential construction 96,031 909 1,581 — — 98,521 Commercial and multifamily residential: Income property 73,783 — — — — 73,783 Owner occupied 58,055 — 889 — — 58,944 Consumer 339,695 68 5,269 — — 345,032 Total $ 5,086,653 $ 34,967 $ 93,174 $ — $ — 5,214,794 Less: Allowance for loan and lease losses 53,233 Loans, excluding PCI loans, net $ 5,161,561 The following is an analysis of the credit quality of our PCI loan portfolio as of June 30, 2015 and December 31, 2014 : Pass Special Mention Substandard Doubtful Loss Total June 30, 2015 (in thousands) PCI loans: Commercial business: Secured $ 36,179 $ 212 $ 8,147 $ — $ — $ 44,538 Unsecured 1,360 — 36 — — 1,396 Real estate: One-to-four family residential 26,797 — 3,063 — — 29,860 Commercial and multifamily residential: Commercial land 8,799 — 664 — — 9,463 Income property 41,517 — 9,678 — — 51,195 Owner occupied 52,908 — 3,426 — — 56,334 Real estate construction: One-to-four family residential: Land and acquisition 1,261 — 537 — — 1,798 Residential construction 1,226 — 16 — — 1,242 Commercial and multifamily residential: Income property 1,340 — — — — 1,340 Owner occupied 909 — — — — 909 Consumer 23,023 — 1,404 — — 24,427 Total $ 195,319 $ 212 $ 26,971 $ — $ — 222,502 Less: Valuation discount resulting from acquisition accounting 20,135 Allowance for loan losses 16,174 PCI loans, net $ 186,193 Pass Special Mention Substandard Doubtful Loss Total December 31, 2014 (in thousands) PCI loans: Commercial business: Secured $ 37,927 $ 937 $ 9,223 $ — $ — $ 48,087 Unsecured 2,156 — 91 — — 2,247 Real estate: One-to-four family residential 28,822 — 3,159 — — 31,981 Commercial and multifamily residential: Commercial land 9,104 — 6,240 — — 15,344 Income property 51,435 1,892 7,186 — — 60,513 Owner occupied 58,629 346 5,566 — — 64,541 Real estate construction: One-to-four family residential: Land and acquisition 1,595 — 913 — — 2,508 Residential construction 741 — 1,104 — — 1,845 Commercial and multifamily residential: Income property 1,435 — 227 — — 1,662 Owner occupied 926 — — — — 926 Consumer 24,037 — 2,777 — — 26,814 Total $ 216,807 $ 3,175 $ 36,486 $ — $ — 256,468 Less: Valuation discount resulting from acquisition accounting 25,884 Allowance for loan losses 16,336 PCI loans, net $ 214,248

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	6 Months Ended
	Jun. 30, 2015
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Summary of Other Real Estate Owned	The following tables set forth activity in OREO for the three and six months ended June 30, 2015 and 2014 : Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (in thousands) Balance, beginning of period $ 23,299 $ 30,553 $ 22,190 $ 35,927 Transfers in 3,143 2,090 7,836 7,841 Valuation adjustments (596 ) (974 ) (793 ) (2,554 ) Proceeds from sale of OREO property (6,484 ) (4,726 ) (11,608 ) (15,932 ) Gain on sale of OREO, net 1,255 1,311 2,992 2,972 Balance, end of period $ 20,617 $ 28,254 $ 20,617 $ 28,254

Covered Assets and FDIC Loss-29

Covered Assets and FDIC Loss-sharing Asset (Tables)	6 Months Ended
	Jun. 30, 2015
Covered Assets And FDIC Loss Sharing Asset [Line Items]
FDIC Loss-sharing Asset	The following table shows a detailed analysis of the FDIC loss-sharing asset for the three and six months ended June 30, 2015 and 2014 : Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (in thousands) Balance at beginning of period $ 14,644 $ 36,837 $ 15,174 $ 39,846 Adjustments not reflected in income: Cash received from the FDIC, net (2,862 ) (3,442 ) (3,522 ) (1,765 ) FDIC reimbursable recoveries, net (944 ) (364 ) (964 ) (231 ) Adjustments reflected in income: Amortization, net (1,376 ) (5,764 ) (3,670 ) (12,216 ) Loan impairment 1 1,214 1,532 3,151 Sale of other real estate (208 ) (965 ) (627 ) (1,721 ) Write-downs of other real estate 52 276 1,124 792 Other 37 189 297 125 Balance at end of period $ 9,344 $ 27,981 $ 9,344 $ 27,981
Schedule of FDIC Loss-Sharing Agreements and Covered Assets [Table Text Block]	The following table presents information about the composition of the FDIC loss-sharing asset, the clawback liability, and the non-single family and the single family covered assets as of the date indicated: June 30, 2015 Columbia River Bank American Marine Bank Summit Bank First Heritage Bank Total (in thousands) FDIC loss-sharing asset $ 470 $ 3,158 $ 3,585 $ 2,131 $ 9,344 Clawback liability $ 4,040 $ 127 $ — $ — $ 4,167 Non-single family covered assets $ 98,008 $ 14,209 $ 13,247 $ 21,150 $ 146,614 Single family covered assets $ 9,087 $ 25,839 $ 6,432 $ 2,182 $ 43,540 Loss-sharing expiration dates: Non-single family First Quarter 2015 First Quarter 2015 Second Quarter 2016 Second Quarter 2016 Single family First Quarter 2020 First Quarter 2020 Second Quarter 2021 Second Quarter 2021 Loss recovery expiration dates: Non-single family First Quarter 2018 First Quarter 2018 Second Quarter 2019 Second Quarter 2019 Single family First Quarter 2020 First Quarter 2020 Second Quarter 2021 Second Quarter 2021

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2015
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 periods indicated: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 (in thousands) Goodwill Total goodwill (1) $ 382,537 $ 343,952 382,537 343,952 Other intangible assets, net Core deposit intangible: Gross core deposit intangible balance at beginning of period (1) 58,598 47,698 58,598 47,698 Accumulated amortization at beginning of period (30,875 ) (24,344 ) (29,058 ) (22,765 ) Core deposit intangible, net at beginning of period 27,723 23,354 29,540 24,933 CDI current period amortization (1,718 ) (1,481 ) (3,535 ) (3,060 ) Total core deposit intangible, net at end of period 26,005 21,873 26,005 21,873 Intangible assets not subject to amortization 919 919 919 919 Other intangible assets, net at end of period 26,924 22,792 26,924 22,792 Total goodwill and other intangible assets at end of period $ 409,461 $ 366,744 $ 409,461 $ 366,744
Estimated Future Amortization Expense of Core Deposit Intangibles	The following table provides the estimated future amortization expense of core deposit intangibles for the remaining six months ending December 31, 2015 and the succeeding four years: Amount (in thousands) Year ending December 31, 2015 $ 3,347 2016 5,945 2017 4,913 2018 3,855 2019 2,951

Derivatives and Balance Sheet31

Derivatives and Balance Sheet Offsetting (Tables)	6 Months Ended
	Jun. 30, 2015
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 June 30, 2015 (in thousands) Assets Interest rate contracts $ 10,659 $ — $ 10,659 $ — $ 10,659 Liabilities Interest rate contracts $ 10,707 $ — $ 10,707 $ (10,707 ) $ — Repurchase agreements $ 92,230 $ — $ 92,230 $ (92,230 ) $ — December 31, 2014 Assets Interest rate contracts $ 11,800 $ — $ 11,800 $ — $ 11,800 Liabilities Interest rate contracts $ 11,851 $ — $ 11,851 $ (11,851 ) $ — Repurchase agreements $ 105,080 $ — $ 105,080 $ (105,080 ) $ — The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements: Remaining contractual maturity of the agreements Overnight and continuous Up to 30 days 30 - 90 days Greater than 90 days Total June 30, 2015 (in thousands) Class of collateral pledged for repurchase agreements U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 67,230 $ — $ — $ 25,000 $ 92,230 Gross amount of recognized liabilities for repurchase agreements 92,230 Amounts related to agreements not included in offsetting disclosure $ — The collateral utilized for the Company’s repurchase agreements is subject to market fluctuations as well as prepayments of principal. The Company monitors the risk of the fair value of its pledged collateral falling below acceptable amounts based on the type of the underlying repurchase agreement. The pledged collateral related to the Company’s term wholesale repurchase agreement, which matures in 2018, is monitored on a monthly basis and additional capital is pledged when necessary. The pledged collateral related to the Company’s sweep repurchase agreements, which mature on a daily basis, is monitored on a daily basis as the underlying sweep accounts can have daily transaction activity and the amount of pledged collateral is adjusted as necessary.
Carrying Value of Securities Pledged As Collateral	The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law: June 30, 2015 (in thousands) Washington and Oregon State to secure public deposits $ 331,431 Federal Reserve Bank to secure borrowings 55,508 Other securities pledged 149,327 Total securities pledged as collateral $ 536,266 The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements: Remaining contractual maturity of the agreements Overnight and continuous Up to 30 days 30 - 90 days Greater than 90 days Total June 30, 2015 (in thousands) Class of collateral pledged for repurchase agreements U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 67,230 $ — $ — $ 25,000 $ 92,230 Gross amount of recognized liabilities for repurchase agreements 92,230 Amounts related to agreements not included in offsetting disclosure $ —
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The following table presents the fair value of derivatives not designated as hedging instruments at June 30, 2015 and December 31, 2014 : Asset Derivatives Liability Derivatives June 30, 2015 December 31, 2014 June 30, 2015 December 31, 2014 Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value (in thousands) Interest rate contracts Other assets $ 10,659 Other assets $ 11,800 Other liabilities $ 10,707 Other liabilities $ 11,851

Accumulated Other Comprehensi32

Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table shows changes in accumulated other comprehensive income (loss) by component for the three and six month periods ended June 30, 2015 and 2014 : Unrealized Gains and Losses on Available-for-Sale Securities (1) Unrealized Gains and Losses on Pension Plan Liability (1) Total (1) Three months ended June 30, 2015 (in thousands) Beginning balance $ 16,379 $ (2,093 ) $ 14,286 Other comprehensive loss before reclassifications (11,341 ) — (11,341 ) Amounts reclassified from accumulated other comprehensive income (loss) (2) (219 ) 63 (156 ) Net current-period other comprehensive income (loss) (11,560 ) 63 (11,497 ) Ending balance $ 4,819 $ (2,030 ) $ 2,789 Three months ended June 30, 2014 Beginning balance $ (3,131 ) $ (1,912 ) $ (5,043 ) Other comprehensive income before reclassifications 8,768 — 8,768 Amounts reclassified from accumulated other comprehensive income (loss) (2) (189 ) 24 (165 ) Net current-period other comprehensive income 8,579 24 8,603 Ending balance $ 5,448 $ (1,888 ) $ 3,560 Six months ended June 30, 2015 Beginning balance $ 7,462 $ (1,841 ) $ 5,621 Other comprehensive loss before reclassifications (1,965 ) (280 ) (2,245 ) Amounts reclassified from accumulated other comprehensive income (loss) (2) (678 ) 91 (587 ) Net current-period other comprehensive loss (2,643 ) (189 ) (2,832 ) Ending balance $ 4,819 $ (2,030 ) $ 2,789 Six months ended June 30, 2014 Beginning balance $ (10,108 ) $ (1,936 ) $ (12,044 ) Other comprehensive income before reclassifications 15,887 — 15,887 Amounts reclassified from accumulated other comprehensive income (loss) (2) (331 ) 48 (283 ) Net current-period other comprehensive income 15,556 48 15,604 Ending balance $ 5,448 $ (1,888 ) $ 3,560 __________ (1) All amounts are net of tax. Amounts in parenthesis indicate debits. (2) See following table for details about these reclassifications.
Schedule of reclassifications from accumulated other comprehensive income [Table Text Block]	The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and six month periods ended June 30, 2015 and 2014 : Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended June 30, Six Months Ended June 30, Affected line Item in the Consolidated 2015 2014 2015 2014 Statement of Income (in thousands) Unrealized gains and losses on available-for-sale securities Investment securities gains $ 343 $ 296 $ 1,064 $ 519 Investment securities gains, net 343 296 1,064 519 Total before tax (124 ) (107 ) (386 ) (188 ) Income tax provision $ 219 $ 189 $ 678 $ 331 Net of tax Amortization of pension plan liability Actuarial losses $ (98 ) $ (37 ) $ (142 ) $ (74 ) Compensation and employee benefits (98 ) (37 ) (142 ) (74 ) Total before tax 35 13 51 26 Income tax benefit $ (63 ) $ (24 ) $ (91 ) $ (48 ) Net of tax

Fair Value Accounting and Mea33

Fair Value Accounting and Measurement (Tables)	6 Months Ended
	Jun. 30, 2015
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 June 30, 2015 and December 31, 2014 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 Fair Value Measurements at Reporting Date Using Level 1 Level 2 Level 3 June 30, 2015 (in thousands) Assets Securities available for sale: U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations $ 1,041,079 $ — $ 1,041,079 $ — State and municipal debt securities 489,031 — 489,031 — U.S. government agency and government-sponsored enterprise securities 359,025 — 359,025 — U.S. government securities 20,162 20,162 — — Other securities 5,148 — 5,148 — Total securities available for sale $ 1,914,445 $ 20,162 $ 1,894,283 $ — Other assets (Interest rate contracts) $ 10,659 $ — $ 10,659 $ — Liabilities Other liabilities (Interest rate contracts) $ 10,707 $ — $ 10,707 $ — Fair value Fair Value Measurements at Reporting Date Using Level 1 Level 2 Level 3 December 31, 2014 (in thousands) Assets Securities available for sale: U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations $ 1,162,387 $ — $ 1,162,387 $ — State and municipal debt securities 496,484 — 496,484 — U.S. government agency and government-sponsored enterprise securities 413,706 — 413,706 — U.S. government securities 20,499 20,499 — — Other securities 5,181 — 5,181 — Total securities available for sale $ 2,098,257 $ 20,499 $ 2,077,758 $ — Other assets (Interest rate contracts) $ 11,800 $ — $ 11,800 $ — Liabilities Other liabilities (Interest rate contracts) $ 11,851 $ — $ 11,851 $ —
Financial Assets Accounted For Fair Value On Nonrecurring Basis	The following tables set forth information related to the Company’s assets that were measured using fair value estimates on a nonrecurring basis during the current and prior year quarterly periods: Fair value at June 30, 2015 Fair Value Measurements at Reporting Date Using Losses During the Three Months Ended Losses During the Six Months Ended Level 1 Level 2 Level 3 (in thousands) Impaired loans $ — $ — $ — $ — $ 1,138 $ 1,138 OREO 1,664 — — 1,664 611 655 $ 1,664 $ — $ — $ 1,664 $ 1,749 $ 1,793 Fair value at Fair Value Measurements at Reporting Date Using Losses During the Three Months Ended Losses During the Six Months Ended June 30, 2014 Level 1 Level 2 Level 3 (in thousands) OREO (1) $ 3,226 $ — $ — $ 3,226 $ 862 $ 1,602 $ 3,226 $ — $ — $ 3,226 $ 862 $ 1,602
Fair Value, by Balance Sheet Grouping	The following tables summarize carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value at June 30, 2015 and December 31, 2014 : June 30, 2015 Carrying Fair Level 1 Level 2 Level 3 (in thousands) Assets Cash and due from banks $ 172,139 $ 172,139 $ 172,139 $ — $ — Interest-earning deposits with banks 5,564 5,564 5,564 — — Securities available for sale 1,914,445 1,914,445 20,162 1,894,283 — FHLB stock 11,803 11,803 — 11,803 — Loans held for sale 4,220 4,220 — 4,220 — Loans 5,542,640 5,624,212 — — 5,624,212 FDIC loss-sharing asset 9,344 1,356 — — 1,356 Interest rate contracts 10,659 10,659 — 10,659 — Liabilities Deposits $ 7,044,373 $ 7,041,949 $ 6,562,670 $ 479,279 $ — FHLB Advances 45,549 46,057 — 46,057 — Repurchase agreements 92,230 93,175 — 93,175 — Interest rate contracts 10,707 10,707 — 10,707 — December 31, 2014 Carrying Fair Level 1 Level 2 Level 3 (in thousands) Assets Cash and due from banks $ 171,221 $ 171,221 $ 171,221 $ — $ — Interest-earning deposits with banks 16,949 16,949 16,949 — — Securities available for sale 2,098,257 2,098,257 20,499 2,077,758 — FHLB stock 33,365 33,365 — 33,365 — Loans held for sale 1,116 1,116 — 1,116 — Loans 5,375,809 5,516,286 — — 5,516,286 FDIC loss-sharing asset 15,174 4,054 — — 4,054 Interest rate contracts 11,800 11,800 — 11,800 — Liabilities Deposits $ 6,924,722 $ 6,921,804 $ 6,416,017 $ 505,787 $ — FHLB Advances 216,568 217,296 — 217,296 — Repurchase agreements 105,080 106,171 — 106,171 — Other borrowings 8,248 8,248 — 8,248 — Interest rate contracts 11,851 11,851 — 11,851 —
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Assets, Quantitative Information	The range and weighted-average of the significant unobservable inputs used to fair value our Level 3 nonrecurring assets, along with the valuation techniques used, are shown in the following table: Fair value at June 30, 2015 Valuation Technique Unobservable Input Range (Weighted Average) (1) (dollars in thousands) Impaired loans (2) $ — Fair Market Value of Collateral Adjustment to Stated value 100% OREO 1,664 Fair Market Value of Collateral Adjustment to Appraisal Value N/A (3) (1) Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable, inventory and equipment). (2) As there was only one impaired loan remeasured, a range of discounts could not be provided. The collateral for this loan consisted of non-proprietary software. (3) Quantitative disclosures are not provided for 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) (dollars in thousands) OREO $ 3,226 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, inventory and equipment). (2) Quantitative disclosures are not provided for OREO because there were no adjustments made to the appraisal value during the current period.

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	6 Months Ended
	Jun. 30, 2015
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 three and six months ended June 30, 2015 and 2014 : Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 (in thousands except per share) Basic EPS: Net income $ 21,946 $ 21,227 $ 46,307 $ 41,071 Less: Earnings allocated to participating securities: Preferred Shares 39 41 82 79 Nonvested restricted shares 248 206 475 378 Earnings allocated to common shareholders $ 21,659 $ 20,980 $ 45,750 $ 40,614 Weighted average common shares outstanding 57,055 52,088 56,999 51,600 Basic earnings per common share $ 0.38 $ 0.40 $ 0.80 $ 0.79 Diluted EPS: Earnings allocated to common shareholders (1) $ 21,659 $ 20,981 $ 45,750 $ 40,617 Weighted average common shares outstanding 57,055 52,088 56,999 51,600 Dilutive effect of equity awards 14 406 13 863 Weighted average diluted common shares outstanding 57,069 52,494 57,012 52,463 Diluted earnings per common share $ 0.38 $ 0.40 $ 0.80 $ 0.77 Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive 37 63 45 73 __________ (1) Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options and warrants to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.

Business combinations (Details)

Business combinations (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 01, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Intermountain Community Bancorp [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition	Nov. 1, 2014
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 131,935
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	47,283
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities	299,458
Business Combination, Purchase Price Allocation, FHLB Stock	2,124
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	93,350
Business Acquisition, Purchase Price Allocation, Liabilities, Deposits	(736,795)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	(22,904)
Business combination, purchase price allocation, securities sold under agreements to repurchase	(59,043)
Business Combination, Purchase Price Allocation, Other Liabilities	(13,725)
Business Combination, Acquired Receivables, Fair Value	502,595
Business Combination, Purchase Price Allocation, Accrued Interest Receivable	4,656
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	20,696
Business Combination, Purchase Price Allocation, Other Real Estate Owned	2,752
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets	10,900
Business Combination, Purchase Price Allocation, Other Assets	35,353
Business Acquisition, Purchase Price Allocation, Goodwill Amount	$ 38,585
Business Acquisition, Pro Forma Revenue					$ 197,723
Business Acquisition, Pro Forma Net Income (Loss)					$ 43,719
Business Acquisition, Pro Forma Earnings Per Share, Basic					$ 0.78
Business Acquisition, Pro Forma Earnings Per Share, Diluted					$ 0.77
Business Combination, Acquisition Related Costs		$ 5,643	$ 0	$ 8,545
business combinations, core deposit intangible percentage of core deposits	1.75%
West Coast Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs			$ 672	72	$ 1,600
Compensation and employee benefits [Member] | Intermountain Community Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		3,035		3,308
Occupancy [Member] | Intermountain Community Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		804		1,303
Advertising and promotion [Member] | Intermountain Community Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		247		343
Data processing and communications [Member] | Intermountain Community Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		180		1,738
Legal and professional fees [Member] | Intermountain Community Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		633		1,018
Other noninterest expenses [Member] | Intermountain Community Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		$ 744		$ 835

Securities (Securities Availabl

Securities (Securities Available for Sale) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	$ 1,907,403	$ 2,087,069
Available-for-sale Debt Securities Gross Unrealized Gain, instant	20,829	25,527
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(13,787)	(14,339)
Securities available for sale	1,914,445	2,098,257
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	1,042,134	1,160,378
Available-for-sale Debt Securities Gross Unrealized Gain, instant	8,427	10,219
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(9,482)	(8,210)
Securities available for sale	1,041,079	1,162,387
State and Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	479,847	483,578
Available-for-sale Debt Securities Gross Unrealized Gain, instant	11,184	14,432
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(2,000)	(1,526)
Securities available for sale	489,031	496,484
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	359,714	416,919
Available-for-sale Debt Securities Gross Unrealized Gain, instant	1,195	856
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(1,884)	(4,069)
Securities available for sale	359,025	413,706
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	20,424	20,910
Available-for-sale Debt Securities Gross Unrealized Gain, instant	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(262)	(411)
Securities available for sale	20,162	20,499
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	5,284	5,284
Available-for-sale Debt Securities Gross Unrealized Gain, instant	23	20
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(159)	(123)
Securities available for sale	$ 5,148	$ 5,181

Securities (Schedule of Contrac

Securities (Schedule of Contractual Maturities of Investment Securities Available for Sale) (Details) $ in Thousands	Jun. 30, 2015USD ($)
Available-for-sale Securities [Abstract]
Due within one year, Amortized Cost	$ 20,112
Due after one year through five years, Amortized Cost	391,397
Due after five years through ten years, Amortized Cost	535,833
Due after ten years, Amortized Cost	954,777
No stated maturity date, Amortized Cost Basis	5,284
Total investment securities available-for-sale, Amortized Cost	1,907,403
Due within one year, Fair Value	20,399
Due after one year through five years, Fair Value	392,321
Due after five years through ten years, Fair Value	539,403
Due after ten years, Fair Value	957,174
No stated maturity date, Fair Value	5,148
Total investment securities available-for-sale, Fair Value	$ 1,914,445

Securities (Carrying Value of S

Securities (Carrying Value of Securities Pledged as Collateral) (Details) $ in Thousands	Jun. 30, 2015USD ($)
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	$ 536,266
Washington and Oregon State Public Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	331,431
Federal Reserve Bank Advances [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	55,508
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	$ 149,327

Securities (Summary of Gross Un

Securities (Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	$ 20,829	$ 25,527
Less than 12 Months Fair Value	544,201	437,414
Less than 12 Months Unrealized Losses	(3,917)	(2,350)
12 Months or More Fair Value	352,912	561,668
12 Months or More Unrealized Losses	(9,870)	(11,989)
Total Fair Value	897,113	999,082
Total Unrealized Losses	(13,787)	(14,339)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	13,787	14,339
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	8,427	10,219
Less than 12 Months Fair Value	290,497	258,825
Less than 12 Months Unrealized Losses	(2,468)	(1,287)
12 Months or More Fair Value	200,514	279,015
12 Months or More Unrealized Losses	(7,014)	(6,924)
Total Fair Value	491,011	537,840
Total Unrealized Losses	(9,482)	(8,211)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	9,482	8,210
State and Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	11,184	14,432
Less than 12 Months Fair Value	123,367	71,026
Less than 12 Months Unrealized Losses	(1,020)	(543)
12 Months or More Fair Value	29,701	44,148
12 Months or More Unrealized Losses	(980)	(982)
Total Fair Value	153,068	115,174
Total Unrealized Losses	(2,000)	(1,525)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	2,000	1,526
US Government Corporations and Agencies Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	1,195	856
Less than 12 Months Fair Value	128,033	105,250
Less than 12 Months Unrealized Losses	(418)	(518)
12 Months or More Fair Value	100,277	216,221
12 Months or More Unrealized Losses	(1,466)	(3,551)
Total Fair Value	228,310	321,471
Total Unrealized Losses	(1,884)	(4,069)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	1,884	4,069
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	0	0
Less than 12 Months Fair Value	0	0
Less than 12 Months Unrealized Losses	0	0
12 Months or More Fair Value	19,613	19,450
12 Months or More Unrealized Losses	(262)	(411)
Total Fair Value	19,613	19,450
Total Unrealized Losses	(262)	(411)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	262	411
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	23	20
Less than 12 Months Fair Value	2,304	2,313
Less than 12 Months Unrealized Losses	(11)	(2)
12 Months or More Fair Value	2,807	2,834
12 Months or More Unrealized Losses	(148)	(121)
Total Fair Value	5,111	5,147
Total Unrealized Losses	(159)	(123)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	$ 159	$ 123

Securities (Narrative) (Details

Securities (Narrative) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)security	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)security	Jun. 30, 2014USD ($)
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds | $	$ 14.9	$ 24.3	$ 72.2	$ 30.7
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	108		108
Number Of Securities In Continuous Loss Position For Twelve Months or More	35		35
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	123		123
Number Of Securities In Continuous Loss Position For Twelve Months or More	28		28
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	20		20
Number Of Securities In Continuous Loss Position For Twelve Months or More	8		8
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Continuous Loss Position For Twelve Months or More	2		2
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	2		2
Number Of Securities In Continuous Loss Position For Twelve Months or More	1		1

Securities Securities (Summary

Securities Securities (Summary of Gross Realized Gains and Gross Realized Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities, Gross Realized Gains	$ 343	$ 296	$ 1,073	$ 519
Available-for-sale Securities, Gross Realized Losses	0	0	(9)	0
Gain (Loss) on Sale of Securities, Net	$ 343	$ 296	$ 1,064	$ 519

Loans (Narrative) (Details)

Loans (Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2015USD ($)contract	Dec. 31, 2014USD ($)
Financing Receivable, Recorded Investment [Line Items]
Loans to related parties	$ 10.1	$ 13.2
Loans and Leases Receivable, Related Parties, Additions	0
Repayments on related party loans	$ 3.1
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	0
Loans Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 1,220	1,080
Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 47.5	$ 46

Loans (Analysis of Loan Portfol

Loans (Analysis of Loan Portfolio by Major Types of Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Less: Unearned income on loans	$ (49,359)		$ (59,374)
Recorded Investment	5,611,897		5,445,378
Allowance for loan losses	(69,257)	$ (70,234)	(69,569)	$ (69,295)	$ (70,571)	$ (72,454)
Loans, net	5,542,640		5,375,809
Loans held for sale	4,220		1,116
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Less: Unearned income on loans	(49,359)		(59,374)
Recorded Investment	5,409,530		5,214,794
Allowance for loan losses	(53,083)		(53,233)
Loans, net	5,356,447		5,161,561
Loans held for sale	4,220		1,116
Loans and Leases Receivable, Gross	5,409,530		5,214,794
Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Less: Unearned income on loans	0		0
Recorded Investment	202,367		230,584
Allowance for loan losses	(16,174)		(16,336)
Loans, net	186,193		214,248
Loans held for sale	0		0
Loans and Leases Receivable, Gross	222,502		256,468
Acquisition Accounting Valuation Discount on Covered Loans	20,135		25,884
Commercial and Multifamily Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	2,249		2,588
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	207,589		202,564
Loans and Leases Receivable, Gross, Consumer, Construction	130,193		120,887
Allowance for loan losses	(1,355)	(1,364)	(2,281)	(1,083)	(1,194)	(1,252)
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	181,849		175,571
Loans and Leases Receivable, Gross, Consumer, Construction	127,311		116,866
Loans and Leases Receivable, Gross	178,613		171,764
One-to-Four Family Residential [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	25,740		26,993
Loans and Leases Receivable, Gross, Consumer, Construction	2,882		4,021
Loans and Leases Receivable, Gross	29,860		31,981
Commercial and Multifamily Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	2,515,172		2,492,310
Loans Receivable, Gross, Commercial, Construction	131,322		136,764
Commercial and Multifamily Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	2,406,594		2,363,541
Loans Receivable, Gross, Commercial, Construction	129,302		134,443
Commercial and Multifamily Residential [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	108,578		128,769
Loans Receivable, Gross, Commercial, Construction	2,020		2,321
Loans and Leases Receivable, Gross	116,992		140,398
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	2,296,689		2,164,070
Commercial Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	2,255,468		2,119,565
Commercial Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	41,221		44,505
Loans and Leases Receivable, Gross	45,934		50,334
Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	2,722,761		2,694,874
Real Estate Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	2,588,443		2,539,112
Real Estate Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	134,318		155,762
Loans and Leases Receivable, Gross	146,852		172,379
One-to-Four Family Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	3,040		4,353
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	261,515		257,651
Real Estate Construction Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	256,613		251,309
Real Estate Construction Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	4,902		6,342
Loans and Leases Receivable, Gross	5,289		6,941
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	380,291		388,157
Allowance for loan losses	(3,182)	$ (2,835)	(3,180)	$ (2,643)	$ (2,637)	$ (2,547)
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	358,365		364,182
Loans and Leases Receivable, Gross	343,997		345,032
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	21,926		23,975
Loans and Leases Receivable, Gross	$ 24,427		$ 26,814

Loans (Analysis of Nonaccrual L

Loans (Analysis of Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	$ 25,746	$ 31,352
Unpaid Principal Balance Nonaccrual Loans	32,716	44,774
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	1,799	2,939
Unpaid Principal Balance Nonaccrual Loans	2,176	3,930
Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	13,018	16,552
Unpaid Principal Balance Nonaccrual Loans	17,139	21,453
Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	521	247
Unpaid Principal Balance Nonaccrual Loans	673	269
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	4,193	2,822
Unpaid Principal Balance Nonaccrual Loans	5,985	5,680
Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	1,561	821
Unpaid Principal Balance Nonaccrual Loans	1,704	1,113
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	1,276	3,200
Unpaid Principal Balance Nonaccrual Loans	1,331	5,521
Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	972	3,826
Unpaid Principal Balance Nonaccrual Loans	1,131	5,837
Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	862	95
Unpaid Principal Balance Nonaccrual Loans	866	112
Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	1,075	370
Unpaid Principal Balance Nonaccrual Loans	1,222	370
Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	469	480
Unpaid Principal Balance Nonaccrual Loans	$ 489	$ 489

Loans (Analysis of the Aged Loa

Loans (Analysis of the Aged Loan Portfolio) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	$ 25,746	$ 31,352
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	5,369,405	5,158,985
Past Due Loans	14,379	24,457
Nonaccrual Loans	25,746	31,352
Loans Receivable, Net	5,409,530	5,214,794
Secured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	13,018	16,552
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	2,149,972	2,004,418
Past Due Loans	5,436	12,658
Nonaccrual Loans	13,018	16,552
Loans Receivable, Net	2,168,426	2,033,628
Unsecured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	521	247
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	81,433	79,661
Past Due Loans	270	185
Nonaccrual Loans	521	247
Loans Receivable, Net	82,224	80,093
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	4,193	2,822
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	172,268	167,197
Past Due Loans	2,152	1,745
Nonaccrual Loans	4,193	2,822
Loans Receivable, Net	178,613	171,764
Commercial Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	1,561	821
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	206,558	187,470
Past Due Loans	1,154	1,488
Nonaccrual Loans	1,561	821
Loans Receivable, Net	209,273	189,779
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	1,276	3,200
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,310,441	1,294,982
Past Due Loans	2,171	3,817
Nonaccrual Loans	1,276	3,200
Loans Receivable, Net	1,313,888	1,301,999
Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	972	3,826
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	857,764	839,689
Past Due Loans	865	1,226
Nonaccrual Loans	972	3,826
Loans Receivable, Net	859,601	844,741
Land And Acquisition [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	862	95
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	15,955	15,462
Past Due Loans	0	953
Nonaccrual Loans	862	95
Loans Receivable, Net	16,817	16,510
Residential Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	1,075	370
Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	107,279	97,821
Past Due Loans	758	330
Nonaccrual Loans	1,075	370
Loans Receivable, Net	109,112	98,521
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	64,557	73,783
Past Due Loans	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	64,557	73,783
Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	469	480
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	61,572	57,470
Past Due Loans	981	994
Nonaccrual Loans	469	480
Loans Receivable, Net	63,022	58,944
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	1,799	2,939
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	341,606	341,032
Past Due Loans	592	1,061
Nonaccrual Loans	1,799	2,939
Loans Receivable, Net	343,997	345,032
Financing Receivables, 60 to 89 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	2,556	8,415
Financing Receivables, 60 to 89 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	1,589	6,149
Financing Receivables, 60 to 89 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	128	45
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	34
Financing Receivables, 60 to 89 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	415	786
Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	276	289
Financing Receivables, 60 to 89 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	994
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	148	118
Financing Receivables, 30 to 59 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	11,823	14,656
Financing Receivables, 30 to 59 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	3,847	5,137
Financing Receivables, 30 to 59 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	270	185
Financing Receivables, 30 to 59 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	2,024	1,700
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	1,154	1,454
Financing Receivables, 30 to 59 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	1,756	3,031
Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	589	937
Financing Receivables, 30 to 59 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	953
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	758	326
Financing Receivables, 30 to 59 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	981	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	444	933
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	1,386
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	1,372
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	4
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	$ 0	$ 10

Loans (Analysis of Impaired Loa

Loans (Analysis of Impaired Loans) (Details) - Loans, Excluding Purchased Credit Impaired Loans [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	$ 5,387,823		$ 5,387,823		$ 5,186,695
Recorded Investment of Loans Individually Measured for Specific Impairment	21,707		21,707		28,099
Recorded Investment	19,379		19,379		26,883
Unpaid Principal Balance	24,795		24,795		38,433
Related Allowance	1,358		1,358		241
Average Recorded Investment Impaired Loans	24,401	$ 26,371	25,634	$ 26,377
Interest Recognized on Impaired Loans	280	341	545	677
Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	2,160,836		2,160,836		2,023,104
Recorded Investment of Loans Individually Measured for Specific Impairment	7,590		7,590		10,524
Recorded Investment	1,230		1,230		99
Unpaid Principal Balance	1,231		1,231		99
Related Allowance	1,161		1,161		25
Average Recorded Investment Impaired Loans	9,231	6,933	9,662	6,318
Interest Recognized on Impaired Loans	8	17	15	33
Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	82,224		82,224		80,091
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		2
Recorded Investment	0		0		2
Unpaid Principal Balance	0		0		2
Related Allowance	0		0		2
Average Recorded Investment Impaired Loans	0	23	1	27
Interest Recognized on Impaired Loans	0	0	0	1
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	174,430		174,430		169,619
Recorded Investment of Loans Individually Measured for Specific Impairment	4,183		4,183		2,145
Recorded Investment	416		416		424
Unpaid Principal Balance	458		458		465
Related Allowance	111		111		120
Average Recorded Investment Impaired Loans	4,180	2,069	3,502	1,920
Interest Recognized on Impaired Loans	11	11	24	23
Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	209,273		209,273		189,779
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	235	103	157	107
Interest Recognized on Impaired Loans	0	0	0	0
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,311,944		1,311,944		1,295,650
Recorded Investment of Loans Individually Measured for Specific Impairment	1,944		1,944		6,349
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	1,966	7,213	3,427	6,946
Interest Recognized on Impaired Loans	23	74	33	136
Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	853,498		853,498		835,895
Recorded Investment of Loans Individually Measured for Specific Impairment	6,103		6,103		8,846
Recorded Investment	575		575		582
Unpaid Principal Balance	574		574		582
Related Allowance	20		20		27
Average Recorded Investment Impaired Loans	6,567	9,222	7,326	9,817
Interest Recognized on Impaired Loans	235	235	468	476
Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	15,849		15,849		16,401
Recorded Investment of Loans Individually Measured for Specific Impairment	968		968		109
Recorded Investment	107		107		109
Unpaid Principal Balance	107		107		109
Related Allowance	66		66		67
Average Recorded Investment Impaired Loans	974	653	686	1,083
Interest Recognized on Impaired Loans	2	1	3	3
Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	108,219		108,219		98,521
Recorded Investment of Loans Individually Measured for Specific Impairment	893		893		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	893	0	595	0
Interest Recognized on Impaired Loans	0	0	0	0
Income Property Multifamily Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	64,557		64,557		73,783
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	63,022		63,022		58,944
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	343,971		343,971		344,908
Recorded Investment of Loans Individually Measured for Specific Impairment	26		26		124
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	355	155	278	159
Interest Recognized on Impaired Loans	1	$ 3	2	$ 5
Impaired Loans With Recorded Allowance [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	2,328		2,328		1,216
Unpaid Principal Balance	2,370		2,370		1,257
Impaired Loans Without Recorded Allowance [Member] | Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	6,360		6,360		10,425
Unpaid Principal Balance	8,169		8,169		12,410
Impaired Loans Without Recorded Allowance [Member] | Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	3,767		3,767		1,721
Unpaid Principal Balance	4,428		4,428		2,370
Impaired Loans Without Recorded Allowance [Member] | Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	1,944		1,944		6,349
Unpaid Principal Balance	2,326		2,326		10,720
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	5,528		5,528		8,264
Unpaid Principal Balance	8,008		8,008		12,732
Impaired Loans Without Recorded Allowance [Member] | Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	861		861		0
Unpaid Principal Balance	866		866		0
Impaired Loans Without Recorded Allowance [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	893		893		0
Unpaid Principal Balance	893		893		0
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	26		26		124
Unpaid Principal Balance	$ 105		$ 105		$ 201

Loans Loans (Analysis of Troubl

Loans Loans (Analysis of Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)Modifications	Jun. 30, 2014USD ($)Modifications	Jun. 30, 2015USD ($)Modifications	Jun. 30, 2014USD ($)Modifications	Dec. 31, 2014USD ($)
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Additional Commitment To Lend	$ 0		$ 0		$ 0
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	1	2	1	7
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 30	$ 546	$ 30	$ 1,396
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 30	$ 546	$ 30	$ 1,379
Loans, Excluding Purchased Credit Impaired Loans [Member] | Secured Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	0	2	0	4
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 546	$ 0	$ 759
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 546	$ 0	$ 759
Loans, Excluding Purchased Credit Impaired Loans [Member] | One-to-Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	1	0	1	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 30	$ 0	$ 30	$ 494
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 30	$ 0	$ 30	$ 494
Loans, Excluding Purchased Credit Impaired Loans [Member] | Income Property Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications			0	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 0	$ 143
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 126

Loans Loans (Analysis of Purcha

Loans Loans (Analysis of Purchased Credit Impaired Loans - Accretable Yield Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Loans, Analysis of Purchased Credit Impaired Loans, Accretable Yield Rollforward [Abstract]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield	$ 67,283	$ 92,511	$ 67,283	$ 92,511	$ 68,726	$ 73,849	$ 101,543	$ 103,907
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	5,737	10,055	12,056	20,624
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans	959	0	2,052	2,826
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	$ 5,253	$ 1,023	$ 7,542	$ 12,054

Allowance for Loan and Lease 49

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for loan and lease losses	$ 2,202	$ 2,117	$ 3,411	$ 4,039
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of unallocated loan amount			5.00%

Allowance for Loan and Lease 50

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 70,234	$ 70,571	$ 69,569	$ 72,454
Charged-offs	(5,613)	(8,431)	(12,038)	(14,894)
Recoveries	2,434	5,038	8,315	7,696
Provision for loan and lease losses	2,202	2,117	3,411	4,039
Ending balance	69,257	69,295	69,257	69,295
Specific Reserve	1,358	380	1,358	380
General Allocation	67,899	68,915	67,899	68,915
Secured Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	25,761	28,801	25,923	31,027
Charged-offs	(2,022)	(1,642)	(3,408)	(1,840)
Recoveries	200	1,435	712	1,883
Provision for loan and lease losses	3,769	(3,077)	4,481	(5,553)
Ending balance	27,708	25,517	27,708	25,517
Specific Reserve	1,161	128	1,161	128
General Allocation	26,547	25,389	26,547	25,389
Unsecured Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,012	746	927	696
Charged-offs	(64)	(75)	(104)	(110)
Recoveries	9	277	115	319
Provision for loan and lease losses	(100)	(194)	(81)	(151)
Ending balance	857	754	857	754
Specific Reserve	0	19	0	19
General Allocation	857	735	857	735
One-to-Four Family Residential [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,364	1,194	2,281	1,252
Charged-offs	(289)	0	(297)	(207)
Recoveries	15	12	27	40
Provision for loan and lease losses	265	(123)	(656)	(2)
Ending balance	1,355	1,083	1,355	1,083
Specific Reserve	111	128	111	128
General Allocation	1,244	955	1,244	955
Commercial Land [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	827	579	799	489
Charged-offs	0	(29)	0	(29)
Recoveries	0	2	0	19
Provision for loan and lease losses	754	(82)	782	(9)
Ending balance	1,581	470	1,581	470
Specific Reserve	0	0	0	0
General Allocation	1,581	470	1,581	470
Income Property Multifamily [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,440	10,107	9,159	9,234
Charged-offs	(43)	(1,934)	(43)	(1,934)
Recoveries	7	505	3,259	518
Provision for loan and lease losses	(207)	1,833	(4,178)	2,693
Ending balance	8,197	10,511	8,197	10,511
Specific Reserve	0	0	0	0
General Allocation	8,197	10,511	8,197	10,511
Owner Occupied [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,612	4,560	5,007	3,605
Charged-offs	0	0	0	(1,023)
Recoveries	13	30	22	39
Provision for loan and lease losses	176	399	772	2,368
Ending balance	5,801	4,989	5,801	4,989
Specific Reserve	20	35	20	35
General Allocation	5,781	4,954	5,781	4,954
Land And Acquisition [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,026	580	1,197	610
Charged-offs	0	0	0	0
Recoveries	1	2	3	41
Provision for loan and lease losses	(530)	(179)	(703)	(248)
Ending balance	497	403	497	403
Specific Reserve	66	69	66	69
General Allocation	431	334	431	334
Residential Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,790	696	1,860	822
Charged-offs	0	0	0	0
Recoveries	7	440	33	443
Provision for loan and lease losses	(839)	(459)	(935)	(588)
Ending balance	958	677	958	677
Specific Reserve	0	0	0	0
General Allocation	958	677	958	677
Income Property Multifamily Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	827	320	622	285
Charged-offs	0	0	0	0
Recoveries	2	0	5	0
Provision for loan and lease losses	(422)	94	(220)	129
Ending balance	407	414	407	414
Specific Reserve	0	0	0	0
General Allocation	407	414	407	414
Owner Occupied Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	499	154	434	58
Charged-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan and lease losses	(58)	12	7	108
Ending balance	441	166	441	166
Specific Reserve	0	0	0	0
General Allocation	441	166	441	166
Consumer Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,835	2,637	3,180	2,547
Charged-offs	(319)	(909)	(1,210)	(1,636)
Recoveries	137	338	410	591
Provision for loan and lease losses	529	577	802	1,141
Ending balance	3,182	2,643	3,182	2,643
Specific Reserve	0	1	0	1
General Allocation	3,182	2,642	3,182	2,642
Purchased Credit Impaired Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	16,531	20,129	16,336	20,174
Charged-offs	(2,876)	(3,842)	(6,976)	(8,115)
Recoveries	2,043	1,997	3,729	3,803
Provision for loan and lease losses	476	1,517	3,085	3,939
Ending balance	16,174	19,801	16,174	19,801
Specific Reserve	0	0	0	0
General Allocation	16,174	19,801	16,174	19,801
Unallocated Financing Receivables [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,710	68	1,844	1,655
Charged-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan and lease losses	(1,611)	1,799	255	212
Ending balance	2,099	1,867	2,099	1,867
Specific Reserve	0	0	0	0
General Allocation	$ 2,099	$ 1,867	$ 2,099	$ 1,867

Allowance for Loan and Lease 51

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Changes in the Allowance for Unfunded Commitments and Letters of Credit) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit
Beginning balance	$ 2,655	$ 2,455	$ 2,655	$ 2,505
Allowance for Loan and Lease Losses, Net Changes In Unfunded Commitments and Letters Of Credit Allowance	275	(100)	275	(150)
Ending balance	$ 2,930	$ 2,355	$ 2,930	$ 2,355

Allowance for Loan and Lease 52

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Analysis of Credit Quality of the Loan Portfolio) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	$ 69,257	$ 70,234	$ 69,569	$ 69,295	$ 70,571	$ 72,454
Loans, net	5,542,640		5,375,809
Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	5,409,530		5,214,794
Loans and Leases Receivable, Allowance	53,083		53,233
Loans, net	5,356,447		5,161,561
Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	222,502		256,468
Acquisition Accounting Valuation Discount on Purchased Credit Impaired Loans	20,135		25,884
Loans and Leases Receivable, Allowance	16,174		16,336
Loans, net	186,193		214,248
Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	5,263,126		5,086,653
Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	195,319		216,807
Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	54,610		34,967
Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	212		3,175
Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	91,794		93,174
Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	26,971		36,486
Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Secured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	27,708	25,761	25,923	25,517	28,801	31,027
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,168,426		2,033,628
Secured Loans [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	44,538		48,087
Secured Loans [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,082,480		1,963,210
Secured Loans [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	36,179		37,927
Secured Loans [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	34,027		15,790
Secured Loans [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	212		937
Secured Loans [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	51,919		54,628
Secured Loans [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,147		9,223
Secured Loans [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Secured Loans [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Secured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Secured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	857	1,012	927	754	746	696
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	82,224		80,093
Unsecured Loans [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,396		2,247
Unsecured Loans [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	81,667		79,534
Unsecured Loans [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,360		2,156
Unsecured Loans [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	46		0
Unsecured Loans [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	511		559
Unsecured Loans [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	36		91
Unsecured Loans [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
One-to-Four Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	1,355	1,364	2,281	1,083	1,194	1,252
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	178,613		171,764
One-to-Four Family Residential [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	29,860		31,981
One-to-Four Family Residential [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	172,318		163,914
One-to-Four Family Residential [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	26,797		28,822
One-to-Four Family Residential [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	53		55
One-to-Four Family Residential [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
One-to-Four Family Residential [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	6,242		7,795
One-to-Four Family Residential [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	3,063		3,159
One-to-Four Family Residential [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
One-to-Four Family Residential [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
One-to-Four Family Residential [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
One-to-Four Family Residential [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	1,581	827	799	470	579	489
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	209,273		189,779
Commercial Land [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	9,463		15,344
Commercial Land [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	200,614		183,701
Commercial Land [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,799		9,104
Commercial Land [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	6,919		4,217
Commercial Land [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,740		1,861
Commercial Land [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	664		6,240
Commercial Land [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	8,197	8,440	9,159	10,511	10,107	9,234
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,313,888		1,301,999
Income Property Multifamily [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	51,195		60,513
Income Property Multifamily [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,301,846		1,287,729
Income Property Multifamily [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	41,517		51,435
Income Property Multifamily [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	4,995		5,885
Income Property Multifamily [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		1,892
Income Property Multifamily [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	7,047		8,385
Income Property Multifamily [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	9,678		7,186
Income Property Multifamily [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	5,801	5,612	5,007	4,989	4,560	3,605
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	859,601		844,741
Owner Occupied [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	56,334		64,541
Owner Occupied [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	833,120		825,694
Owner Occupied [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	52,908		58,629
Owner Occupied [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,570		7,876
Owner Occupied [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		346
Owner Occupied [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	17,911		11,171
Owner Occupied [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	3,426		5,566
Owner Occupied [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	497	1,026	1,197	403	580	610
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	16,817		16,510
Land And Acquisition [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,798		2,508
Land And Acquisition [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	16,374		15,307
Land And Acquisition [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,261		1,595
Land And Acquisition [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		167
Land And Acquisition [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	443		1,036
Land And Acquisition [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	537		913
Land And Acquisition [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	958	1,790	1,860	677	696	822
Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	109,112		98,521
Residential Construction [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,242		1,845
Residential Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	107,752		96,031
Residential Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,226		741
Residential Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		909
Residential Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,360		1,581
Residential Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	16		1,104
Residential Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	407	827	622	414	320	285
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	64,557		73,783
Income Property Multifamily Construction [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,340		1,662
Income Property Multifamily Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	64,557		73,783
Income Property Multifamily Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,340		1,435
Income Property Multifamily Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		227
Income Property Multifamily Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	441	499	434	166	154	58
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	63,022		58,944
Owner Occupied Construction [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	909		926
Owner Occupied Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	62,148		58,055
Owner Occupied Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	909		926
Owner Occupied Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	874		889
Owner Occupied Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	3,182	$ 2,835	3,180	$ 2,643	$ 2,637	$ 2,547
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	343,997		345,032
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	24,427		26,814
Consumer Portfolio Segment [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	340,250		339,695
Consumer Portfolio Segment [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	23,023		24,037
Consumer Portfolio Segment [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		68
Consumer Portfolio Segment [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	3,747		5,269
Consumer Portfolio Segment [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,404		2,777
Consumer Portfolio Segment [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 0		$ 0

Other Real Estate Owned (Summar

Other Real Estate Owned (Summary of Other Real Estate Owned) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other Real Estate Owned [Line Items]
Balance, beginning of period	$ 23,299	$ 30,553	$ 22,190	$ 35,927
Transfers in	3,143	2,090	7,836	7,841
Valuation adjustments	(596)	(974)	(793)	(2,554)
Proceeds from Sale of OREO Property	6,484	4,726	11,608	15,932
Gain (loss) on sale of OREO	1,255	1,311	2,992	2,972
Total OREO, end of period	20,617	$ 28,254	20,617	$ 28,254
Mortgage Loans in Process of Foreclosure, Amount	2,500		2,500
One-to-Four Family Residential [Member]
Other Real Estate Owned [Line Items]
Total OREO, end of period	$ 2,100		$ 2,100

Covered Assets and FDIC Loss-54

Covered Assets and FDIC Loss-sharing Asset (Narrative) (Details) - Jun. 30, 2015 - USD ($) $ in Thousands	Total
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Amount of Estimated Clawback Liability	$ 4,167
Payment Of Clawback If Losses Less Than Stated Levels, Period After Acquisition	10 years 45 days
Federal deposit insurance corporation loss-sharing indemnified assets	$ 9,000
Federal deposit insurance corporation loss-sharing indemnified assets receivable	$ 344
Maximum [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Loss Sharing Agreement Effective Years	10 years
Loss Recovery Provision Effective Years	10 years
Minimum [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Loss Sharing Agreement Effective Years	5 years
Loss Recovery Provision Effective Years	8 years
Covered Loans [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Percentage of loss shared by FDIC	80.00%
FDIC Percentage Of Loss Recoveries	80.00%
Percentage of loss shared by FDIC When Loss Share Thresholds Met	95.00%
Percentage Of Loss Recoveries Shared By FDIC When Loss Share Thresholds Met	95.00%

Covered Assets and FDIC Loss-55

Covered Assets and FDIC Loss-sharing Asset (FDIC Loss-sharing Asset) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at beginning of period	$ 14,644	$ 36,837	$ 15,174	$ 39,846
Cash received from the FDIC	(2,862)	(3,442)	(3,522)	(1,765)
FDIC reimbursable losses, net	(944)	(364)	(964)	(231)
Amortization, net	(1,376)	(5,764)	(3,670)	(12,216)
Impairment	1	1,214	1,532	3,151
Sale of other real estate	(208)	(965)	(627)	(1,721)
Write-downs of other real estate	52	276	1,124	792
Other	37	189	297	125
Balance at end of period	9,344	$ 27,981	9,344	$ 27,981
Amount of Estimated Clawback Liability	4,167		4,167
Non-Single Family Covered Assets	146,614		146,614
Single Family Covered Assets	43,540		43,540
Columbia River Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	470		470
Amount of Estimated Clawback Liability	4,040		4,040
Non-Single Family Covered Assets	98,008		98,008
Single Family Covered Assets	9,087		9,087
American Marine Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	3,158		3,158
Amount of Estimated Clawback Liability	127		127
Non-Single Family Covered Assets	14,209		14,209
Single Family Covered Assets	25,839		25,839
Summit Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	3,585		3,585
Amount of Estimated Clawback Liability	0		0
Non-Single Family Covered Assets	13,247		13,247
Single Family Covered Assets	6,432		6,432
First Heritage Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	2,131		2,131
Amount of Estimated Clawback Liability	0		0
Non-Single Family Covered Assets	21,150		21,150
Single Family Covered Assets	$ 2,182		$ 2,182

Goodwill and Intangible Asset56

Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 919	$ 919	$ 919	$ 919
Other intangible assets, net	26,924	22,792	26,924	22,792		$ 30,459
Goodwill and Intangible Assets [Roll Forward]
Total goodwill, beginning of period			382,537
Total goodwill, end of period	382,537	343,952	382,537	343,952
CDI current period amortization	(1,718)	(1,480)	(3,535)	(3,060)
Total goodwill and intangible assets, end of period	409,461	366,744	$ 409,461	366,744
Core Deposits [Member]
Goodwill and Intangible Assets [Line Items]
Estimated life of CDI, in years			10 years
Goodwill and Intangible Assets [Roll Forward]
Gross core deposit intangible balance, beginning of period					$ 58,598	58,598	$ 47,698	$ 47,698
Accumulated amortization at beginning of period					$ (30,875)	$ (29,058)	$ (24,344)	$ (22,765)
Core deposit intangible, net, beginning of period	27,723	23,354	$ 29,540	24,933
CDI current period amortization	(1,718)	(1,481)	(3,535)	(3,060)
Total core deposit intangible, end of period	$ 26,005	$ 21,873	$ 26,005	$ 21,873

Goodwill and Intangible Asset57

Goodwill and Intangible Assets (Estimated Future Amortization Expense of Core Deposit Intangibles) (Details) $ in Thousands	Jun. 30, 2015USD ($)
Future Amortization Expense For Core Deposit Intangibles
2,015	$ 3,347
2,016	5,945
2,017	4,913
2,018	3,855
2,019	$ 2,951

Derivatives and Balance Sheet58

Derivatives and Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Derivative [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ 9	$ 4	$ 0
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	92,230	92,230
Secured Borrowings, Gross, Difference, Amount	0	0
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	92,230	92,230
Maturity Overnight [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	67,230	67,230
Maturity Less than 30 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	0	0
Maturity 30 to 90 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	0	0
Maturity Greater than 90 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	25,000	25,000
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	216,200	216,200		$ 215,600
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of asset derivative instruments	10,659	10,659		11,800
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of liability derivative instruments	$ 10,707	$ 10,707		$ 11,851

Derivatives and Balance Sheet59

Derivatives and Balance Sheet Offsetting Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Balance Sheet Offsetting [Line Items]
Repurchase agreements, amounts offset in balance sheet	$ 0	$ 0
Repurchase agreements, net amount presented in statement of financial position	92,230	105,080
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	(92,230)	(105,080)
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	10,659	11,800
Derivative, Collateral, Obligation to Return Securities	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	10,659	11,800
Derivative Liability, Gross Amounts Offset in Balance Sheets	0	0
Derivative Liability	10,707	11,851
Derivative, Collateral, Right to Reclaim Securities	(10,707)	(11,851)
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	0	0
Available-for-sale Securities [Member]
Balance Sheet Offsetting [Line Items]
Securities Sold under Agreements to Repurchase, Gross	92,230	105,080
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Assets [Member]
Balance Sheet Offsetting [Line Items]
Fair value of asset derivative instruments	10,659	11,800
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Liabilities [Member]
Balance Sheet Offsetting [Line Items]
Fair value of liability derivative instruments	$ 10,707	$ 11,851

Shareholders' Equity (Details)

Shareholders' Equity (Details) - $ / shares	Jul. 23, 2015	Apr. 22, 2015	Jan. 29, 2015	Apr. 01, 2013
Subsequent Event [Line Items]
Declared quarterly cash dividend		$ 0.18	$ 0.16
Special Dividends Payable, Amount Per Share		$ 0.16	$ 0.14
Dividend Declared [Member]
Subsequent Event [Line Items]
Declared quarterly cash dividend	$ 0.18
Special Dividends Payable, Amount Per Share	$ 0.16
Preferred Stock [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues				8,782

Shareholders' Equity Narrative

Shareholders' Equity Narrative (Details)	Jun. 30, 2015shares
Shareholders' Equity [Abstract]
Preferred Stock Converted Into Common Stock, Shares	102,363

Accumulated Other Comprehensi62

Accumulated Other Comprehensive Income (Changes in AOCI by Component) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[1]	$ 14,286	$ (5,043)	$ 5,621	$ (12,044)
Other comprehensive loss before reclassifications	[1]	(11,341)	8,768	(2,245)	15,887
Amounts reclassified from accumulated other comprehensive income (loss) (2)	[1],[2]	(156)	(165)	(587)	(283)
Net current-period other comprehensive income (loss)	[1]	(11,497)	8,603	(2,832)	15,604
Ending balance	[1]	2,789	3,560	2,789	3,560
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[1]	16,379	(3,131)	7,462	(10,108)
Other comprehensive loss before reclassifications	[1]	(11,341)	8,768	(1,965)	15,887
Amounts reclassified from accumulated other comprehensive income (loss) (2)	[1],[2]	(219)	(189)	(678)	(331)
Net current-period other comprehensive income (loss)	[1]	(11,560)	8,579	(2,643)	15,556
Ending balance	[1]	4,819	5,448	4,819	5,448
Unrealized Gains and Losses on Pension Plan Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[1]	(2,093)	(1,912)	(1,841)	(1,936)
Other comprehensive loss before reclassifications	[1]	0	0	(280)	0
Amounts reclassified from accumulated other comprehensive income (loss) (2)	[1],[2]	63	24	91	48
Net current-period other comprehensive income (loss)	[1]	63	24	(189)	48
Ending balance	[1]	$ (2,030)	$ (1,888)	$ (2,030)	$ (1,888)
[1]	All amounts are net of tax. Amounts in parenthesis indicate debits.
[2]	See following table for details about these reclassifications.

Accumulated Other Comprehensi63

Accumulated Other Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net			$ 1,064	$ 519
Compensation and employee benefits	$ 38,446	$ 31,064	77,546	62,402
Total before tax	31,799	29,870	66,987	58,510
Income tax provision	(9,853)	(8,643)	(20,680)	(17,439)
Net of tax	21,946	21,227	46,307	41,071
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net	343	296	1,064	519
Total before tax	343	296	1,064	519
Income tax provision	(124)	(107)	(386)	(188)
Net of tax	219	189	678	331
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Pension Plan Liability [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Compensation and employee benefits	(98)	(37)	(142)	(74)
Total before tax	(98)	(37)	(142)	(74)
Income tax provision	35	13	51	26
Net of tax	$ (63)	$ (24)	$ (91)	$ (48)

Fair Value Accounting and Mea64

Fair Value Accounting and Measurement (Financial Assets And Liabilities Accounted for Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 1,914,445	$ 2,098,257
Fair Value, Level 2 to level 1 Transfers, Amount	0
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 1,914,445	2,098,257
Other assets (Interest rate contracts)	10,659	11,800
Other liabilities (Interest rate contracts)	10,707	11,851
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	20,162	20,499
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	1,894,283	2,077,758
Other assets (Interest rate contracts)	10,659	11,800
Other liabilities (Interest rate contracts)	10,707	11,851
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	1,041,079	1,162,387
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	1,041,079	1,162,387
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	489,031	496,484
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	489,031	496,484
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	359,025	413,706
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	359,025	413,706
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 Government Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	20,162	20,499
US Government 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	20,162	20,499
US Government 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 Government 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	5,148	5,181
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	5,148	5,181
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

Fair Value Accounting and Mea65

Fair Value Accounting and Measurement (Financial Assets Accounted For Fair Value On Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 0		$ 0
Fair Value, Option, Changes in Fair Value, Gain (Loss)	(1,749)	$ (862)	(1,793)	$ (1,602)
OREO	1,664	3,226	1,664	3,226
Assets, Fair Value Disclosure	1,664	3,226	1,664	3,226
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0		0
OREO	0	0	0	0
Assets, Fair Value Disclosure	0	0	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
OREO	0	0	0	0
Assets, Fair Value Disclosure	0	0	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0		0
OREO	1,664	3,226	1,664	3,226
Assets, Fair Value Disclosure	1,664	3,226	1,664	3,226
Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	(1,138)		(1,138)
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	$ (611)	$ (862)	$ (655)	$ (1,602)

Fair Value Accounting and Mea66

Fair Value Accounting and Measurement (Quantitative Information About Level 3 Fair Value Measurements) (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands		3 Months Ended
		Jun. 30, 2015		Jun. 30, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans		$ 0
OREO		1,664		$ 3,226
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans		0
OREO		1,664		$ 3,226
Real Estate Collateral [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans		$ 0
Other Collateral [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]	100.00%	[2]	0.00%
Other Collateral [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]	100.00%	[2]	0.00%
Other Collateral [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1],[2]	100.00%		0.00%
[1]	Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable and inventory).
[2]	Other collateral consists of accounts receivable and inventory.

Fair Value Accounting and Mea67

Fair Value Accounting and Measurement (Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets
Interest-earning deposits with banks	$ 5,564	$ 16,949
Securities available for sale	1,914,445	2,098,257
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Assets
Cash and due from banks	172,139	171,221
Interest-earning deposits with banks	5,564	16,949
Securities available for sale	1,914,445	2,098,257
FHLB stock	11,803	33,365
Loans held for sale	4,220	1,116
Loans	5,542,640	5,375,809
FDIC loss-sharing asset	9,344	15,174
Interest rate contracts	10,659	11,800
Liabilities
Deposits	7,044,373	6,924,722
FHLB Advances	45,549	216,568
Repurchase agreements	92,230	105,080
Interest rate contracts	10,707	11,851
Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	172,139	171,221
Interest-earning deposits with banks	5,564	16,949
Securities available for sale	1,914,445	2,098,257
FHLB stock	11,803	33,365
Loans held for sale	4,220	1,116
Loans	5,624,212	5,516,286
FDIC loss-sharing asset	1,356	4,054
Interest rate contracts	10,659	11,800
Liabilities
Deposits	7,041,949	6,921,804
FHLB Advances	46,057	217,296
Repurchase agreements	93,175	106,171
Interest rate contracts	10,707	11,851
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	172,139	171,221
Interest-earning deposits with banks	5,564	16,949
Securities available for sale	20,162	20,499
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	6,562,670	6,416,017
FHLB Advances	0	0
Repurchase agreements	0	0
Interest rate contracts	0	0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	0	0
Interest-earning deposits with banks	0	0
Securities available for sale	1,894,283	2,077,758
FHLB stock	11,803	33,365
Loans held for sale	4,220	1,116
Loans	0	0
FDIC loss-sharing asset	0	0
Interest rate contracts	10,659	11,800
Liabilities
Deposits	479,279	505,787
FHLB Advances	46,057	217,296
Repurchase agreements	93,175	106,171
Interest rate contracts	10,707	11,851
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [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	5,624,212	5,516,286
FDIC loss-sharing asset	1,356	4,054
Interest rate contracts	0	0
Liabilities
Deposits	0	0
FHLB Advances	0	0
Repurchase agreements	0	0
Interest rate contracts	$ 0	$ 0

Earnings per Common Share (Deta

Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income		$ 21,946	$ 21,227	$ 46,307	$ 41,071
Earnings allocated to participating securities - nonvested restricted shares		248	206	475	378
Earnings allocated to participating securities - preferred shares		39	41	82	79
Earnings allocated to common shareholders, Basic		$ 21,659	$ 20,980	$ 45,750	$ 40,614
Weighted average common shares outstanding		57,055	52,088	56,999	51,600
Basic earnings per common share		$ 0.38	$ 0.40	$ 0.80	$ 0.79
Dilutive effect of equity awards and warrants		14	406	13	863
Earnings allocated to common shareholders, Diluted	[1]	$ 21,659	$ 20,981	$ 45,750	$ 40,617
Weighted average diluted common shares outstanding		57,069	52,494	57,012	52,463
Diluted earnings per common share		$ 0.38	$ 0.40	$ 0.80	$ 0.77
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.		37	63	45	73
[1]	Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options and warrants to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.

Subsequent Event (Details)

Subsequent Event (Details) - shares shares in Thousands	Aug. 06, 2015	Jun. 30, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Common Stock, Shares Authorized		115,000	63,033
Subsequent Event [Member]
Subsequent Event [Line Items]
Subsequent Event, Date	Aug. 6, 2015