Accumulated Other Comprehensive Income (Loss), Net - Change in other comprehensive income (loss) for the period (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period	$ 1,677	$ 3,794	$ 232
Unrealized holding gains (net of tax, $1,979, $1,037, and 1,091 for 2014, 2015 and 2016, respectively)	(2,116)	(2,015)	3,841
Reclassification adjustment (net of tax, $63, $48, and $528 for 2014, 2015 and 2016, respectively)	(1,026)	(92)	(123)
Unrealized gain on interest rate swaps (net of tax, $82, $3, and ($34) for 2014, 2015 and 2016, respectively)	65	(6)	(160)
Reclassification adjustment, net of tax of $0, $2 and $2, for 2014, 2015 and 2016, respectively	0	(4)	4
Balance end of period	(1,400)	1,677	3,794
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent, Parenthetical Disclosures [Abstract]
Unrealized holding gains arising during the period, tax	1,091	1,037	(1,979)
Reclassification adjustment for investment securities, taxes	528	48	63
Unrealized gain (loss) on interest rate swap, tax	(34)	3	82
Reclassification adjustment for (gain) loss on interest rate swap ineffectiveness, tax	0	2	(2)
Unrealized Gains (Losses) on Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period	1,872	3,979	261
Unrealized holding gains (net of tax, $1,979, $1,037, and 1,091 for 2014, 2015 and 2016, respectively)	(2,116)	(2,015)	3,841
Reclassification adjustment (net of tax, $63, $48, and $528 for 2014, 2015 and 2016, respectively)	(1,026)	(92)	(123)
Unrealized gain on interest rate swaps (net of tax, $82, $3, and ($34) for 2014, 2015 and 2016, respectively)	0	0	0
Reclassification adjustment, net of tax of $0, $2 and $2, for 2014, 2015 and 2016, respectively		0	0
Balance end of period	(1,270)	1,872	3,979
Derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period	(195)	(185)	(29)
Unrealized holding gains (net of tax, $1,979, $1,037, and 1,091 for 2014, 2015 and 2016, respectively)	0	0	0
Reclassification adjustment (net of tax, $63, $48, and $528 for 2014, 2015 and 2016, respectively)	0	0	0
Unrealized gain on interest rate swaps (net of tax, $82, $3, and ($34) for 2014, 2015 and 2016, respectively)	65	(6)	(160)
Reclassification adjustment, net of tax of $0, $2 and $2, for 2014, 2015 and 2016, respectively		(4)	4
Balance end of period	$ (130)	$ (195)	$ (185)