Transactions With Affiliates (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
Deposits	$ 4,272,989,000	$ 3,313,221,000
Collateralized Debt Obligations [Member]
Related Party Transaction [Line Items]
Payments to acquire available-for-sale securities, debt	27,000,000
Government National Mortgage Association Certificates and Obligations (GNMA) [Member]
Related Party Transaction [Line Items]
Largest amount of purchases outstanding	41,300,000
Resource America, Inc. [Member]
Related Party Transaction [Line Items]
Rent expense	102,000	102,000	59,000
Percentage of expenses paid as rent (in hundredths)	50.00%
Atlas Energy, L.P. [Member]
Related Party Transaction [Line Items]
Rent expense	104,000	69,000
Percentage of expenses paid as rent (in hundredths)	50.00%
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Deposits	36,700,000	42,600,000
Directors, Executive Officers, Principal Stockholders and Affiliates [Member]
Related Party Transaction [Line Items]
Due from related parties	34,900,000
PrinceRidge Group LLC [Member]
Related Party Transaction [Line Items]
Payments to acquire available-for-sale securities, debt	89,100,000
Securities under agreements to resell, outstanding amount	6,400,000
PrinceRidge Group LLC [Member] | Residential Mortgage-backed Securities [Member]
Related Party Transaction [Line Items]
Payments to acquire available-for-sale securities, debt	11,300,000
PrinceRidge Group LLC [Member] | Collateralized Corporate Debt Obligations [Member]
Related Party Transaction [Line Items]
Payments to acquire available-for-sale securities, debt	50,800,000
PrinceRidge Group LLC [Member] | SBA Loan [Member]
Related Party Transaction [Line Items]
Payments to acquire available-for-sale securities, debt	$ 9,400,000