Loans (Covered Loan Loss Share Receivable) (Details) (Loss Share Receivable, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Loss Share Receivable Rollforward [Roll Forward]
Balance at beginning of period	$ 22,033	$ 61,827
Amortization	(2,187)	(5,863)
Increase/(decrease) due to impairment (recapture) on FDIC acquired loans	4,227	4,824
FDIC reimbursement	(4,013)	(5,087)
FDIC acquired loans paid in full	(55)	(953)
Balance at end of the period (1)	20,005	54,748
Single Family Loss Share Agreement
Loss Share Receivable Rollforward [Roll Forward]
Balance at end of the period (1)	(13,752)
Non-Single Family Loss Share Agreement
Loss Share Receivable Rollforward [Roll Forward]
Balance at end of the period (1)	$ (6,253)