Loans Receivable And Allowance For Credit Losses Landscape Financing Receivables Past Due (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 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	$ 19,900,000		$ 19,900,000		$ 11,200,000
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	22,504,000		22,504,000		34,944,000
60 to 89 days past due	6,289,000		6,289,000		8,569,000
Greater than 90 days past due	57,966,000		57,966,000		93,936,000
Total past due	86,759,000		86,759,000		137,449,000
Current	6,915,165,000		6,915,165,000		6,115,785,000
Greater than 90 days and accruing	0		0		0
% of Total, 30 to 59 days past due	0.00%		0.00%		1.00%
% of Total, 60 to 89 days past due	0.00%		0.00%		0.00%
% of Total, 90 days past due	1.00%		1.00%		2.00%
% of Total, Total Past Due	1.00%		1.00%		3.00%
% of Total, Current	99.00%		99.00%		97.00%
Total loans receivable, gross	7,001,924,000		7,001,924,000		6,253,234,000
Total Loans, Percentage	100.00%		100.00%		100.00%
% of Total, 90 days past due and still accruing	0.00%		0.00%		0.00%
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	171,404,000		171,404,000		235,439,000
Charge-offs	(28,672,000)		(28,672,000)		(50,110,000)
Book Balance, Without Specific Reserve	122,553,000		122,553,000		152,448,000
Book Balance, With Specific Reserve	20,179,000		20,179,000		32,881,000
Specific Reserve	4,829,000		4,829,000		8,463,000
Average Book Balance	162,933,000	272,521,000	164,029,000	276,251,000
Interest Income Recognized	967,000	1,505,000	3,635,000	4,085,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	964,872,000		964,872,000		806,722,000
Residential Real Estate [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	1,829,000		1,829,000		5,800,000
60 to 89 days past due	2,118,000		2,118,000		1,576,000
Greater than 90 days past due	19,054,000		19,054,000		20,507,000
Total past due	23,001,000		23,001,000		27,883,000
Current	941,871,000		941,871,000		778,839,000
Greater than 90 days and accruing	0		0		0
Total loans receivable, gross	964,872,000		964,872,000		806,722,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	45,620,000		45,620,000		49,816,000
Charge-offs	(5,125,000)		(5,125,000)		(6,391,000)
Book Balance, Without Specific Reserve	40,199,000		40,199,000		43,060,000
Book Balance, With Specific Reserve	296,000		296,000		365,000
Specific Reserve	296,000		296,000		365,000
Average Book Balance	41,662,000	46,485,000	41,960,000	43,231,000
Interest Income Recognized	165,000	174,000	317,000	418,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	3,205,148,000		3,205,148,000		2,874,801,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	60,652,000		60,652,000		99,693,000
Charge-offs	(18,451,000)		(18,451,000)		(24,116,000)
Book Balance, Without Specific Reserve	35,210,000		35,210,000		55,834,000
Book Balance, With Specific Reserve	6,991,000		6,991,000		19,743,000
Specific Reserve	1,793,000		1,793,000		3,182,000
Commercial Real Estate [Member] | Investor CRE [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	6,947,000		6,947,000		10,565,000
60 to 89 days past due	424,000		424,000		1,042,000
Greater than 90 days past due	9,316,000		9,316,000		34,196,000
Total past due	16,687,000		16,687,000		45,803,000
Current	1,155,746,000		1,155,746,000		1,174,044,000
Greater than 90 days and accruing	0		0		0
Total loans receivable, gross	1,172,433,000		1,172,433,000		1,219,847,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	28,527,000		28,527,000		59,099,000
Charge-offs	(3,255,000)		(3,255,000)		(8,366,000)
Book Balance, Without Specific Reserve	20,774,000		20,774,000		33,540,000
Book Balance, With Specific Reserve	4,498,000		4,498,000		17,193,000
Specific Reserve	1,308,000		1,308,000		2,697,000
Average Book Balance	34,760,000	60,793,000	38,003,000	63,283,000
Interest Income Recognized	109,000	421,000	456,000	1,003,000
Commercial Real Estate [Member] | Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	651,000		651,000		707,000
60 to 89 days past due	0		0		479,000
Greater than 90 days past due	704,000		704,000		3,436,000
Total past due	1,355,000		1,355,000		4,622,000
Current	1,961,564,000		1,961,564,000		1,575,667,000
Greater than 90 days and accruing	0		0		0
Total loans receivable, gross	1,962,919,000		1,962,919,000		1,580,289,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	2,802,000		2,802,000		9,554,000
Charge-offs	(737,000)		(737,000)		(1,405,000)
Book Balance, Without Specific Reserve	840,000		840,000		6,873,000
Book Balance, With Specific Reserve	1,225,000		1,225,000		1,276,000
Specific Reserve	219,000		219,000		219,000
Average Book Balance	3,445,000	16,839,000	5,106,000	16,188,000
Interest Income Recognized	4,000	255,000	39,000	350,000
Commercial Real Estate [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	2,692,000		2,692,000		611,000
60 to 89 days past due	0		0		0
Greater than 90 days past due	6,050,000		6,050,000		8,243,000
Total past due	8,742,000		8,742,000		8,854,000
Current	61,054,000		61,054,000		65,811,000
Greater than 90 days and accruing	0		0		0
Total loans receivable, gross	69,796,000		69,796,000		74,665,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	29,323,000		29,323,000		31,040,000
Charge-offs	(14,459,000)		(14,459,000)		(14,345,000)
Book Balance, Without Specific Reserve	13,596,000		13,596,000		15,421,000
Book Balance, With Specific Reserve	1,268,000		1,268,000		1,274,000
Specific Reserve	266,000		266,000		266,000
Average Book Balance	16,035,000	58,289,000	15,779,000	64,030,000
Interest Income Recognized	470,000	21,000	2,171,000	873,000
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	2,048,303,000		2,048,303,000		1,817,090,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	59,602,000		59,602,000		78,259,000
Charge-offs	(4,780,000)		(4,780,000)		(19,177,000)
Book Balance, Without Specific Reserve	41,930,000		41,930,000		46,309,000
Book Balance, With Specific Reserve	12,892,000		12,892,000		12,773,000
Specific Reserve	2,740,000		2,740,000		4,916,000
Commercial [Member] | Owner Occupied CRE [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	4,828,000		4,828,000		10,543,000
60 to 89 days past due	2,135,000		2,135,000		3,300,000
Greater than 90 days past due	17,987,000		17,987,000		20,883,000
Total past due	24,950,000		24,950,000		34,726,000
Current	1,386,626,000		1,386,626,000		1,241,865,000
Greater than 90 days and accruing	0		0		0
Total loans receivable, gross	1,411,576,000		1,411,576,000		1,276,591,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	55,838,000		55,838,000		61,300,000
Charge-offs	(4,780,000)		(4,780,000)		(6,452,000)
Book Balance, Without Specific Reserve	38,166,000		38,166,000		42,075,000
Book Balance, With Specific Reserve	12,892,000		12,892,000		12,773,000
Specific Reserve	2,740,000		2,740,000		4,916,000
Average Book Balance	56,890,000	73,688,000	52,953,000	73,188,000
Interest Income Recognized	195,000	628,000	589,000	1,406,000
Commercial [Member] | Commercial & Industrial (C&I) [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	1,395,000		1,395,000		2,690,000
60 to 89 days past due	395,000		395,000		376,000
Greater than 90 days past due	1,634,000		1,634,000		1,954,000
Total past due	3,424,000		3,424,000		5,020,000
Current	633,303,000		633,303,000		535,479,000
Greater than 90 days and accruing	0		0		0
Total loans receivable, gross	636,727,000		636,727,000		540,499,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	3,764,000		3,764,000		16,959,000
Charge-offs	0		0		(12,725,000)
Book Balance, Without Specific Reserve	3,764,000		3,764,000		4,234,000
Book Balance, With Specific Reserve	0		0		0
Specific Reserve	0		0		0
Average Book Balance	4,488,000	11,530,000	3,999,000	11,122,000
Interest Income Recognized	24,000	6,000	58,000	35,000
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	783,601,000		783,601,000		754,621,000
Consumer [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
30 to 59 days past due	4,162,000		4,162,000		4,028,000
60 to 89 days past due	1,217,000		1,217,000		1,796,000
Greater than 90 days past due	3,221,000		3,221,000		4,717,000
Total past due	8,600,000		8,600,000		10,541,000
Current	775,001,000		775,001,000		744,080,000
Greater than 90 days and accruing	0		0		0
Total loans receivable, gross	783,601,000		783,601,000		754,621,000
Loan and Lease Receivables, Impaired [Abstract]
Unpaid Principal Balance	5,530,000		5,530,000		7,671,000
Charge-offs	(316,000)		(316,000)		(426,000)
Book Balance, Without Specific Reserve	5,214,000		5,214,000		7,245,000
Book Balance, With Specific Reserve	0		0		0
Specific Reserve	0		0		0
Average Book Balance	5,653,000	4,897,000	6,229,000	5,209,000
Interest Income Recognized	0	0	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		15,700,000		2,100,000
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	80,387,000		80,387,000		121,113,000
Nonaccrual Financing Receivable [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	17,205,000		17,205,000		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	17,843,000		17,843,000		46,399,000
Nonaccrual Financing Receivable [Member] | Commercial Real Estate [Member] | Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	840,000		840,000		4,055,000
Nonaccrual Financing Receivable [Member] | Commercial Real Estate [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	6,050,000		6,050,000		8,144,000
Nonaccrual Financing Receivable [Member] | Commercial [Member] | Owner Occupied CRE [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	30,792,000		30,792,000		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	2,538,000		2,538,000		3,424,000
Nonaccrual Financing Receivable [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Total loans receivable, gross	$ 5,119,000		$ 5,119,000		$ 6,938,000