Loans Receivable And Allowance For Credit Losses Landscape Financing Receivables Past Due (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	$ 22,500,000
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	25,799,000		34,944,000
60 to 89 days past due	18,794,000		8,569,000
Greater than 90 days past due	85,528,000		93,936,000
Total past due	130,121,000		137,449,000
Current	6,347,376,000		6,115,785,000
Greater than 90 days and accruing	0		0
% of Total, 30 to 59 days past due	0.00%		1.00%
% of Total, 60 to 89 days past due	0.00%		0.00%
% of Total, 90 days past due	2.00%		2.00%
% of Total, Total Past Due	2.00%		3.00%
% of Total, Current	98.00%		97.00%
Total loans receivable, gross	6,477,497,000		6,253,234,000
Total Loans, Percentage	100.00%		100.00%
% of Total, 90 days past due and still accruing	0.00%		0.00%
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	230,482,000		235,439,000
Charge-offs	(47,351,000)		(50,110,000)
Book Balance, Without Specific Reserve	148,366,000		152,448,000
Book Balance, With Specific Reserve	34,765,000		32,881,000
Specific Reserve	9,726,000		8,463,000
Average Book Balance	184,231,000	283,432,000
Interest Income Recognized	2,668,000	2,580,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	857,864,000		806,722,000
Residential Real Estate [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	5,884,000		5,800,000
60 to 89 days past due	2,587,000		1,576,000
Greater than 90 days past due	19,542,000		20,507,000
Total past due	28,013,000		27,883,000
Current	829,851,000		778,839,000
Greater than 90 days and accruing	0		0
Total loans receivable, gross	857,864,000		806,722,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	47,967,000		49,816,000
Charge-offs	(5,139,000)		(6,391,000)
Book Balance, Without Specific Reserve	42,517,000		43,060,000
Book Balance, With Specific Reserve	311,000		365,000
Specific Reserve	311,000		365,000
Average Book Balance	43,127,000	46,157,000
Interest Income Recognized	152,000	244,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	2,960,437,000		2,874,801,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	87,554,000		99,693,000
Charge-offs	(21,276,000)		(24,116,000)
Book Balance, Without Specific Reserve	49,610,000		55,834,000
Book Balance, With Specific Reserve	16,668,000		19,743,000
Specific Reserve	4,308,000		3,182,000
Commercial Real Estate [Member] | Investor CRE [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	6,004,000		10,565,000
60 to 89 days past due	5,329,000		1,042,000
Greater than 90 days past due	23,404,000		34,196,000
Total past due	34,737,000		45,803,000
Current	1,129,084,000		1,174,044,000
Greater than 90 days and accruing	0		0
Total loans receivable, gross	1,163,821,000		1,219,847,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	50,451,000		59,099,000
Charge-offs	(6,204,000)		(8,366,000)
Book Balance, Without Specific Reserve	34,451,000		33,540,000
Book Balance, With Specific Reserve	9,796,000		17,193,000
Specific Reserve	3,005,000		2,697,000
Average Book Balance	47,490,000	49,703,000
Interest Income Recognized	347,000	582,000
Commercial Real Estate [Member] | Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	168,000		707,000
60 to 89 days past due	0		479,000
Greater than 90 days past due	1,184,000		3,436,000
Total past due	1,352,000		4,622,000
Current	1,724,051,000		1,575,667,000
Greater than 90 days and accruing	0		0
Total loans receivable, gross	1,725,403,000		1,580,289,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	5,562,000		9,554,000
Charge-offs	(737,000)		(1,405,000)
Book Balance, Without Specific Reserve	3,575,000		6,873,000
Book Balance, With Specific Reserve	1,250,000		1,276,000
Specific Reserve	219,000		219,000
Average Book Balance	6,487,000	6,519,000
Interest Income Recognized	35,000	95,000
Commercial Real Estate [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	219,000		611,000
60 to 89 days past due	3,661,000		0
Greater than 90 days past due	7,488,000		8,243,000
Total past due	11,368,000		8,854,000
Current	59,845,000		65,811,000
Greater than 90 days and accruing	0		0
Total loans receivable, gross	71,213,000		74,665,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	31,541,000		31,040,000
Charge-offs	(14,335,000)		(14,345,000)
Book Balance, Without Specific Reserve	11,584,000		15,421,000
Book Balance, With Specific Reserve	5,622,000		1,274,000
Specific Reserve	1,084,000		266,000
Average Book Balance	16,951,000	89,477,000
Interest Income Recognized	1,701,000	852,000
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	1,906,904,000		1,817,090,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	88,452,000		78,259,000
Charge-offs	(20,518,000)		(19,177,000)
Book Balance, Without Specific Reserve	50,148,000		46,309,000
Book Balance, With Specific Reserve	17,786,000		12,773,000
Specific Reserve	5,107,000		4,916,000
Commercial [Member] | Owner Occupied CRE [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	7,666,000		10,543,000
60 to 89 days past due	5,522,000		3,300,000
Greater than 90 days past due	27,780,000		20,883,000
Total past due	40,968,000		34,726,000
Current	1,331,981,000		1,241,865,000
Greater than 90 days and accruing	0		0
Total loans receivable, gross	1,372,949,000		1,276,591,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	71,229,000		61,300,000
Charge-offs	(8,508,000)		(6,452,000)
Book Balance, Without Specific Reserve	44,935,000		42,075,000
Book Balance, With Specific Reserve	17,786,000		12,773,000
Specific Reserve	5,107,000		4,916,000
Average Book Balance	58,785,000	73,771,000
Interest Income Recognized	394,000	778,000
Commercial [Member] | Commercial & Industrial (C&I) [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	1,048,000		2,690,000
60 to 89 days past due	414,000		376,000
Greater than 90 days past due	2,096,000		1,954,000
Total past due	3,558,000		5,020,000
Current	530,397,000		535,479,000
Greater than 90 days and accruing	0		0
Total loans receivable, gross	533,955,000		540,499,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	17,223,000		16,959,000
Charge-offs	(12,010,000)		(12,725,000)
Book Balance, Without Specific Reserve	5,213,000		4,234,000
Book Balance, With Specific Reserve	0		0
Specific Reserve	0		0
Average Book Balance	4,723,000	12,288,000
Interest Income Recognized	34,000	29,000
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	752,292,000		754,621,000
Consumer [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	4,810,000		4,028,000
60 to 89 days past due	1,281,000		1,796,000
Greater than 90 days past due	4,034,000		4,717,000
Total past due	10,125,000		10,541,000
Current	742,167,000		744,080,000
Greater than 90 days and accruing	0		0
Total loans receivable, gross	752,292,000		754,621,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	6,509,000		7,671,000
Charge-offs	(418,000)		(426,000)
Book Balance, Without Specific Reserve	6,091,000		7,245,000
Book Balance, With Specific Reserve	0		0
Specific Reserve	0		0
Average Book Balance	6,668,000	5,517,000
Interest Income Recognized	5,000	0
Nonaccrual Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	15,700,000		2,100,000
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	113,647,000		121,113,000
Nonaccrual Financing Receivable [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	18,421,000		20,457,000
Nonaccrual Financing Receivable [Member] | Commercial Real Estate [Member] | Investor CRE [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	35,765,000		46,399,000
Nonaccrual Financing Receivable [Member] | Commercial Real Estate [Member] | Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	1,321,000		4,055,000
Nonaccrual Financing Receivable [Member] | Commercial Real Estate [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	7,488,000		8,144,000
Nonaccrual Financing Receivable [Member] | Commercial [Member] | Owner Occupied CRE [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	40,458,000		31,696,000
Nonaccrual Financing Receivable [Member] | Commercial [Member] | Commercial & Industrial (C&I) [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	4,407,000		3,424,000
Nonaccrual Financing Receivable [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	$ 5,787,000		$ 6,938,000