Loans Receivable And Allowance For Credit Losses Landscape (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
% of Total	100.00%		100.00%
Financing Receivable, Gross	$ 6,477,497		$ 6,253,234
Unpaid Principal Balance	230,482		235,439
Charge-offs	47,351		50,110
Book Balance, Without Specific Reserve	148,366		152,448
Book Balance, With Specific Reserve	34,765		32,881
Specific Reserve	9,726		8,463
Average Book Balance	184,231	283,432
Interest Income Recognized	2,668	2,580
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	857,864		806,722
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	2,960,437		2,874,801
Unpaid Principal Balance	87,554		99,693
Charge-offs	21,276		24,116
Book Balance, Without Specific Reserve	49,610		55,834
Book Balance, With Specific Reserve	16,668		19,743
Specific Reserve	4,308		3,182
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	1,906,904		1,817,090
Unpaid Principal Balance	88,452		78,259
Charge-offs	20,518		19,177
Book Balance, Without Specific Reserve	50,148		46,309
Book Balance, With Specific Reserve	17,786		12,773
Specific Reserve	5,107		4,916
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	752,292		754,621
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
% of Total	74.00%		73.00%
Financing Receivable, Gross	4,791,633		4,564,064
Pass [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	766,136		714,346
Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	722,180		723,698
Internally Assigned Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
% of Total	20.00%		20.00%
Financing Receivable, Gross	1,281,573		1,261,577
Internally Assigned Grade [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	52,250		53,722
Internally Assigned Grade [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	15,901		17,255
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
% of Total	3.00%		4.00%
Financing Receivable, Gross	219,883		231,570
Special Mention [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	11,542		11,739
Special Mention [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	5,425		4,864
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
% of Total	3.00%		3.00%
Financing Receivable, Gross	174,720		187,560
Substandard [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	27,625		26,550
Substandard [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	8,786		8,804
Doubtful/Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
% of Total	0.00%		0.00%
Financing Receivable, Gross	9,688		8,463
Doubtful/Loss [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	311		365
Doubtful/Loss [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	0		0
Restructured [Member]
Financing Receivable, Recorded Investment [Line Items]
% of Total	1.00%		1.00%
Financing Receivable, Gross	69,484		64,216
Restructured [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	24,407		22,968
Restructured [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	304		307
Nonaccrual Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
% of Total	2.00%		2.00%
Financing Receivable, Gross	113,647		121,113
Nonaccrual Financing Receivable [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	18,421		20,457
Nonaccrual Financing Receivable [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	5,787		6,938
Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
% of Total	3.00%		3.00%
Financing Receivable, Gross	183,131		185,329
Nonperforming [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	42,828		43,425
Nonperforming [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	6,091		7,245
Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
% of Total	97.00%		97.00%
Financing Receivable, Gross	6,294,366		6,067,905
Performing [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	815,036		763,297
Performing [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	746,201		747,376
Residential Real Estate [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	857,864		806,722
Unpaid Principal Balance	47,967		49,816
Charge-offs	5,139		6,391
Book Balance, Without Specific Reserve	42,517		43,060
Book Balance, With Specific Reserve	311		365
Specific Reserve	311		365
Average Book Balance	43,127	46,157
Interest Income Recognized	152	244
Investor Commercial Real Estate [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	1,163,821		1,219,847
Unpaid Principal Balance	50,451		59,099
Charge-offs	6,204		8,366
Book Balance, Without Specific Reserve	34,451		33,540
Book Balance, With Specific Reserve	9,796		17,193
Specific Reserve	3,005		2,697
Average Book Balance	47,490	49,703
Interest Income Recognized	347	582
Investor Commercial Real Estate [Member] | Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	571,102		599,660
Investor Commercial Real Estate [Member] | Internally Assigned Grade [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	453,064		472,801
Investor Commercial Real Estate [Member] | Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	81,649		77,342
Investor Commercial Real Estate [Member] | Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	55,001		67,347
Investor Commercial Real Estate [Member] | Doubtful/Loss [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	3,005		2,697
Investor Commercial Real Estate [Member] | Restructured [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	8,482		4,334
Investor Commercial Real Estate [Member] | Nonaccrual Financing Receivable [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	35,765		46,399
Investor Commercial Real Estate [Member] | Nonperforming [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	44,247		50,733
Investor Commercial Real Estate [Member] | Performing [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	1,119,574		1,169,114
Multifamily [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	1,725,403		1,580,289
Unpaid Principal Balance	5,562		9,554
Charge-offs	737		1,405
Book Balance, Without Specific Reserve	3,575		6,873
Book Balance, With Specific Reserve	1,250		1,276
Specific Reserve	219		219
Average Book Balance	6,487	6,519
Interest Income Recognized	35	95
Multifamily [Member] | Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	1,640,373		1,486,824
Multifamily [Member] | Internally Assigned Grade [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	69,576		74,379
Multifamily [Member] | Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	10,568		10,122
Multifamily [Member] | Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	4,667		8,745
Multifamily [Member] | Doubtful/Loss [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	219		219
Multifamily [Member] | Restructured [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	3,504		4,094
Multifamily [Member] | Nonaccrual Financing Receivable [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	1,321		4,055
Multifamily [Member] | Nonperforming [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	4,825		8,149
Multifamily [Member] | Performing [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	1,720,578		1,572,140
Construction [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	71,213		74,665
Unpaid Principal Balance	31,541		31,040
Charge-offs	14,335		14,345
Book Balance, Without Specific Reserve	11,584		15,421
Book Balance, With Specific Reserve	5,622		1,274
Specific Reserve	1,084		266
Average Book Balance	16,951	89,477
Interest Income Recognized	1,701	852
Construction [Member] | Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	11,362		10,946
Construction [Member] | Internally Assigned Grade [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	41,995		42,518
Construction [Member] | Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	4,585		3,401
Construction [Member] | Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	12,187		17,534
Construction [Member] | Doubtful/Loss [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	1,084		266
Construction [Member] | Restructured [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	9,718		8,551
Construction [Member] | Nonaccrual Financing Receivable [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	7,488		8,144
Construction [Member] | Nonperforming [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	17,206		16,695
Construction [Member] | Performing [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	54,007		57,970
Owner Occupied CRE [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	1,372,949		1,276,591
Unpaid Principal Balance	71,229		61,300
Charge-offs	8,508		6,452
Book Balance, Without Specific Reserve	44,935		42,075
Book Balance, With Specific Reserve	17,786		12,773
Specific Reserve	5,107		4,916
Average Book Balance	58,785	73,771
Interest Income Recognized	394	778
Owner Occupied CRE [Member] | Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	733,524		678,916
Owner Occupied CRE [Member] | Internally Assigned Grade [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	499,192		454,348
Owner Occupied CRE [Member] | Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	76,629		85,228
Owner Occupied CRE [Member] | Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	58,560		53,183
Owner Occupied CRE [Member] | Doubtful/Loss [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	5,044		4,916
Owner Occupied CRE [Member] | Restructured [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	22,263		23,152
Owner Occupied CRE [Member] | Nonaccrual Financing Receivable [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	40,458		31,696
Owner Occupied CRE [Member] | Nonperforming [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	62,721		54,848
Owner Occupied CRE [Member] | Performing [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	1,310,228		1,221,743
Commercial & Industrial (C&I) [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	533,955		540,499
Unpaid Principal Balance	17,223		16,959
Charge-offs	12,010		12,725
Book Balance, Without Specific Reserve	5,213		4,234
Book Balance, With Specific Reserve	0		0
Specific Reserve	0		0
Average Book Balance	4,723	12,288
Interest Income Recognized	34	29
Commercial & Industrial (C&I) [Member] | Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	346,956		349,674
Commercial & Industrial (C&I) [Member] | Internally Assigned Grade [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	149,595		146,554
Commercial & Industrial (C&I) [Member] | Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	29,485		38,874
Commercial & Industrial (C&I) [Member] | Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	7,894		5,397
Commercial & Industrial (C&I) [Member] | Doubtful/Loss [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	25		0
Commercial & Industrial (C&I) [Member] | Restructured [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	806		810
Commercial & Industrial (C&I) [Member] | Nonaccrual Financing Receivable [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	4,407		3,424
Commercial & Industrial (C&I) [Member] | Nonperforming [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	5,213		4,234
Commercial & Industrial (C&I) [Member] | Performing [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	528,742		536,265
Consumer [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Gross	752,292		754,621
Unpaid Principal Balance	6,509		7,671
Charge-offs	418		426
Book Balance, Without Specific Reserve	6,091		7,245
Book Balance, With Specific Reserve	0		0
Specific Reserve	0		0
Average Book Balance	6,668	5,517
Interest Income Recognized	$ 5	$ 0