Loans Receivable (Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment	$ 44,982	$ 280,354
With a related allowance recorded, Unpaid Principal Balance	64,971	316,032
With no related allowance recorded, Recorded Investment	278,760	181,982
With no related allowance, Unpaid Principal Balance	446,947	299,001
Recorded Investment	323,742	462,336
Unpaid Principal Balance	511,918	615,033
Related Allowance	2,292	77,247
Commerical Non-Real Estate [Member]
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment	1,174	17,792
With a related allowance recorded, Unpaid Principal Balance	1,174	17,792
With no related allowance recorded, Recorded Investment	6,933	5,922
With no related allowance, Unpaid Principal Balance	7,059	5,922
Recorded Investment	8,107	23,714
Unpaid Principal Balance	8,233	23,714
Related Allowance	237	15,408
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	225,485	305,807
Unpaid Principal Balance	375,229	420,685
Related Allowance	1,265	52,582
Commercial Real Estate Residential [Member]
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment	7,544	64,841
With a related allowance recorded, Unpaid Principal Balance	12,411	70,780
With no related allowance recorded, Recorded Investment	56,297	26,735
With no related allowance, Unpaid Principal Balance	122,432	71,759
Related Allowance	67	20,986
Commercial Real Estate Land [Member]
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment		5,451
With a related allowance recorded, Unpaid Principal Balance		5,451
With no related allowance recorded, Recorded Investment	12,887	9,388
With no related allowance, Unpaid Principal Balance	35,768	30,314
Related Allowance		1,765
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment		1,715
With a related allowance recorded, Unpaid Principal Balance		1,715
With no related allowance recorded, Recorded Investment	4,549	3,882
With no related allowance, Unpaid Principal Balance	6,523	4,872
Related Allowance		100
Commercial Real Estate Owner Other [Member]
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment	35,307	130,771
With a related allowance recorded, Unpaid Principal Balance	50,429	149,742
With no related allowance recorded, Recorded Investment	108,901	63,024
With no related allowance, Unpaid Principal Balance	147,666	86,052
Related Allowance	1,198	29,731
Small Business [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	12,267	18,895
Unpaid Principal Balance	13,992	20,952
Related Allowance	790	861
Small Business Real Estate [Member]
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment		6,499
With a related allowance recorded, Unpaid Principal Balance		6,499
With no related allowance recorded, Recorded Investment	10,566	10,265
With no related allowance, Unpaid Principal Balance	12,167	12,007
Related Allowance		85
Small Business Non-Real Estate [Member]
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment	957	1,339
With a related allowance recorded, Unpaid Principal Balance	957	1,339
With no related allowance recorded, Recorded Investment	744	792
With no related allowance, Unpaid Principal Balance	868	1,107
Related Allowance	790	776
Consumer [Member]
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment		15,951
With a related allowance recorded, Unpaid Principal Balance		17,502
With no related allowance recorded, Recorded Investment	18,723	9,719
With no related allowance, Unpaid Principal Balance	22,966	13,246
Recorded Investment	18,723	25,670
Unpaid Principal Balance	22,966	30,748
Related Allowance		1,454
Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	59,160	88,250
Unpaid Principal Balance	91,498	118,934
Related Allowance		6,942
Residential-Interest Only [Member]
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment		15,441
With a related allowance recorded, Unpaid Principal Balance		20,667
With no related allowance recorded, Recorded Investment	22,085	17,761
With no related allowance, Unpaid Principal Balance	38,244	28,042
Related Allowance		2,982
Residential-Amortizing [Member]
Financing Receivable, Impaired [Line Items]
With a related allowance recorded, Recorded Investment		20,554
With a related allowance recorded, Unpaid Principal Balance		24,545
With no related allowance recorded, Recorded Investment	37,075	34,494
With no related allowance, Unpaid Principal Balance	53,254	45,680
Related Allowance		$ 3,960