Other Real Estate Owned (OREO) - Changes in the Balance for OREO (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Other Real Estate [Roll Forward]
Balance at the beginning of year, net	$ 3,345	$ 4,051
Transfers from loans, net	2,645	287
Purchased loans	40	0
Sales proceeds	(713)	(814)
Gain (loss) on disposition	66	(100)
Less valuation adjustments	(310)	(79)
Balance at the end of year, net	$ 5,073	$ 3,345