Changes in Noncovered Other Real Estate Owned (Summary of Noncovered Other Real Estate Owned) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Real Estate Owned [Line Items]
Other Real Estate Owned, established through acquisition	$ 0	$ 0	$ 0	$ 14,708
Balance, beginning of period			35,927
Proceeds from sale of OREO property			(16,527)	(10,779)
Gain (loss) on sale of OREO			4,955	8,745
Total OREO, end of period	21,904		21,904
Noncovered Loans [Member]
Other Real Estate Owned [Line Items]
Balance, beginning of period	15,203	24,339	23,834	10,676
Transfers in, net of write-downs ($0, $48, $0 and $90, respectively)	475	4,413	2,809	9,190
Transfers in, write-downs	0	48	0	90
Additional OREO write-down	(630)	(1,066)	(2,195)	(1,636)
Proceeds from sale of OREO property	(6,229)	(4,673)	(16,527)	(10,295)
Gain (loss) on sale of OREO	1,496	530	2,394	900
Total OREO, end of period	$ 10,315	$ 23,543	$ 10,315	$ 23,543