Loans and Credit Quality (Details 2) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Delinquent loans in loan portfolio
30-89 Days Past Due	$ 3,253	$ 25,342
Greater than 90 Days Past Due	174,429	276,132
Total Past Due	177,682	301,474
Current	5,210,330	5,715,406
Total Loans	5,388,012	6,016,880
Greater than 90 Days Past Due and Accruing	39,852	49,027
Asset-Based [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	8,074
Greater than 90 Days Past Due	20,424	27,130
Total Past Due	20,424	35,204
Current	1,142,382	1,500,537
Total Loans	1,162,806	1,535,741
Greater than 90 Days Past Due and Accruing	1,982	3,244
Cash Flow [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	751	10,573
Greater than 90 Days Past Due	36,304	60,644
Total Past Due	37,055	71,217
Current	1,786,985	1,752,352
Total Loans	1,824,040	1,823,569
Greater than 90 Days Past Due and Accruing	0	0
Healthcare Asset-Based [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	0	0
Current	255,011	272,264
Total Loans	255,011	272,264
Greater than 90 Days Past Due and Accruing	0	0
Healthcare Real Estate [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Greater than 90 Days Past Due	21,167	25,887
Total Past Due	21,167	25,887
Current	483,430	840,527
Total Loans	504,597	866,414
Greater than 90 Days Past Due and Accruing	0	0
Real Estate [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	54
Greater than 90 Days Past Due	91,579	148,197
Total Past Due	91,579	148,251
Current	692,950	924,590
Total Loans	784,529	1,072,841
Greater than 90 Days Past Due and Accruing	37,870	45,783
Multi-Family [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	205	2,324
Greater than 90 Days Past Due	349	9,293
Total Past Due	554	11,617
Current	723,821	327,692
Total Loans	724,375	339,309
Greater than 90 Days Past Due and Accruing	0	0
Small Business [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	2,297	4,317
Greater than 90 Days Past Due	4,606	4,981
Total Past Due	6,903	9,298
Current	125,751	97,444
Total Loans	132,654	106,742
Greater than 90 Days Past Due and Accruing	$ 0	$ 0