Other real estate owned ("OREO"), net (Other Real Estate Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Real Estate Owned [Roll Forward]
Balance at beginning of year	$ 3,274	$ 3,309	$ 3,144
Additions	367	1,558	3,705
Dispositions	(1,964)	(3,140)	(3,611)
Change in valuation allowance	0	1,547	71
Balance at end of year	$ 1,677	$ 3,274	$ 3,309