Other Real Estate Owned - Changes in OREO (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) property	Dec. 31, 2015 USD ($) property
Foreclosed Property [Roll Forward]
Beginning balance	$ 7,435	$ 9,779
Net proceeds from sales	(5,465)	(6,465)
Net gains (losses) on sales	678	919
Transfers in	859	4,342
Cash additions	290	558
OREO Transfers to Loans		(995)
Impairment charge	(261)	(703)
Ending balance	$ 3,536	7,435
Loans [Member]
Real Estate Owned Disclosure [Line Items]
Number of Real Estate Properties | property	2
Foreclosed Property [Roll Forward]
Beginning balance	$ 220	349
Net proceeds from sales	(7)	(1,735)
Net gains (losses) on sales	1	60
Transfers in	28	1,671
Impairment charge	(6)	(125)
Ending balance	$ 236	$ 220
Tax Lien [Member]
Real Estate Owned Disclosure [Line Items]
Number of Real Estate Properties | property	41	60
Foreclosed Property [Roll Forward]
Beginning balance	$ 7,215	$ 9,430
Net proceeds from sales	(5,458)	(4,730)
Net gains (losses) on sales	677	859
Transfers in	831	2,671
Cash additions	290	558
OREO Transfers to Loans		(995)
Impairment charge	(255)	(578)
Ending balance	$ 3,300	$ 7,215