Other Real Estate Owned (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) property	Mar. 31, 2015 USD ($) property
OREO
Balance at the beginning of the period	$ 24,803	$ 26,499
Additions	2,124	4,113
Write-downs	(667)	(813)
Sold	(4,529)	(5,729)
Balance at the end of the period	$ 21,731	$ 24,070
Number of properties uncovered | property	115	123
Covered OREO
Balance at the beginning of the period	$ 5,751	$ 16,227
Additions	2,151	2,423
Write-downs	(2,131)	(1,402)
Sold	(1,549)	(5,222)
Balance at the end of the period	$ 4,222	$ 12,026
Number of properties covered by loss share with the FDIC | property	17	55
Total
Balance at the beginning of the period	$ 30,554	$ 42,726
Additions	4,275	6,536
Write-downs	(2,798)	(2,215)
Sold	(6,078)	(10,951)
Balance at the end of the period	$ 25,953	$ 36,096
Number of properties held | property	132	178
Residential real estate included in OREO	$ 3,400
Residential real estate consumer mortgage loans in foreclosure process	$ 7,500