Other Real Estate Owned (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2016 USD ($) property	Jun. 30, 2016 property	Jun. 23, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) property
OREO
Balance at the beginning of the period	$ 24,803	$ 26,499	$ 37,398
Transfers	4,222	2,245
Additions, net	11,842	21,419	29,260
Write-downs	(2,270)	(3,163)	(4,827)
Sold	(20,281)	(22,197)	(35,332)
Balance at the end of the period	18,316	24,803	26,499
Number of properties uncovered | property				90	17			118
Other Real Estate, Non Covered	24,803	26,499	37,398	$ 18,316			$ 4,200	$ 24,803
Covered OREO
Balance at the beginning of the period	5,751	16,227	27,520
Transfers	(4,222)	(2,245)
Additions, net	2,151	9,283	16,555
Write-downs	(2,131)	(6,265)	(5,858)
Sold	(1,549)	(11,249)	(21,990)
Balance at the end of the period	0	5,751	16,227
Number of properties covered by loss share with the FDIC | property								20
Total
Balance at the beginning of the period	30,554	42,726	64,918
Additions, net	13,993	30,702	45,815
Write-downs	(4,401)	(9,428)	(10,685)
Sold	(21,830)	(33,446)	(57,322)
Balance at the end of the period	18,316	30,554	42,726
Number of properties held | property								138
Covered Other real estate under share agreements	30,554	42,726	64,918	18,316		$ 3,000		$ 30,554
Residential real estate consumer mortgage loans in foreclosure, carrying value				5,100
Carrying value of covered OREO assets	$ 5,751	$ 16,227	$ 27,520	0				$ 5,751
Residential real estate
Total
Other Real Estate In Foreclosure				$ 3,600