Income Taxes Deferred Tax Asset (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Deferred Tax Asset and Liability, Net [Line Items]
NOL carryforwards - federal	$ 242,318,000	$ 250,946,000
NOL carryforwards - state	21,443,000	22,110,000
Tax credits - federal	7,671,000	7,587,000
Tax credits - state	2,594,000	4,167,000
Allowance for losses on loans	61,385,000	75,393,000
Deferred compensation	10,760,000	12,485,000
Bonus accrual	4,670,000	2,138,000
Intangibles	2,284,000	6,000
Purchase accounting premiums and discounts	2,087,000	3,877,000
Nonaccrual loans	1,931,000	2,167,000
Deferred rent	1,119,000	1,063,000
Other	3,394,000	3,044,000
Deferred tax assets	361,656,000	384,983,000
Unrealized gain on available-for-sale securities	22,627,000	22,670,000
FHLB Seattle dividends	16,325,000	16,486,000
Mortgage servicing rights	11,869,000	8,169,000
Fair value - Llans held for sale	8,966,000	3,093,000
Deferred loan fees	5,867,000	5,162,000
Prepaid expenses	2,151,000	1,945,000
ASC 740 (FIN 48) - temporary differences	5,000	9,000
Deferred tax liabilities	67,810,000	57,534,000
Deferred Tax Assets, Valuation Allowance	(1,764,000)	(327,449,000)
Net deferred tax asset	292,082,000	0
Deferred Tax Assets, Percentage Restriction on Stock Transfer, Per Investor, Common Stock Outstanding			4.95%
Domestic Tax Authority [Member]
Deferred Tax Asset and Liability, Net [Line Items]
Net operatin loss carryforwards	692,300,000
State and Local Jurisdiction [Member]
Deferred Tax Asset and Liability, Net [Line Items]
Net operatin loss carryforwards	$ 442,400,000