Foreclosed Real Estate - Summary of Foreclosed Real Estate (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Real Estate [Abstract]
Balance at beginning of period	$ 6,811	$ 10,533	$ 7,403	$ 11,641
Transfers from loans	274	1,646	1,162	2,176
Properties sold	(702)	(1,954)	(2,930)	(3,514)
Gain on sale of foreclosed assets	77	12	948	69
Transferred to loans	(36)	(192)	(36)	(259)
Write-downs and partial liquidations	(54)	(143)	(177)	(211)
Balance at end of period	$ 6,370	$ 9,902	$ 6,370	$ 9,902