Accumulated Other Comprehensive Income - Change in other comprehensive income for the period (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period			$ 3,794	$ 232
Unrealized holding gains (losses) (net of tax, $1,911 and $229 for 9 months ended September 30, 2014 and 2015, respectively)	$ 198	$ 173	(446)	3,710
Reclassification adjustment (net of tax, $48 and $47 for 9 months ended September 30, 2014 and 2015, respectively)			(91)	(93)
Unrealized loss on interest rate swaps (net of tax, $14 and $66 for 9 months ended September 30, 2014 and 2015, respectively)			(129)	(27)
Reclassification adjustment, (net of tax, $3 and $2 for 9 months ended September 30, 2014 and 2015, respectively)	0	(5)	(4)	0
Balance end of period	3,124	3,822	3,124	3,822
Unrealized Gains on Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period			3,979	261
Unrealized holding gains (losses) (net of tax, $1,911 and $229 for 9 months ended September 30, 2014 and 2015, respectively)			(446)	3,710
Reclassification adjustment (net of tax, $48 and $47 for 9 months ended September 30, 2014 and 2015, respectively)			(91)	(93)
Unrealized loss on interest rate swaps (net of tax, $14 and $66 for 9 months ended September 30, 2014 and 2015, respectively)			0	0
Reclassification adjustment, (net of tax, $3 and $2 for 9 months ended September 30, 2014 and 2015, respectively)			0	0
Balance end of period	3,442	3,878	3,442	3,878
Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period			(185)	(29)
Unrealized holding gains (losses) (net of tax, $1,911 and $229 for 9 months ended September 30, 2014 and 2015, respectively)			0	0
Reclassification adjustment (net of tax, $48 and $47 for 9 months ended September 30, 2014 and 2015, respectively)			0	0
Unrealized loss on interest rate swaps (net of tax, $14 and $66 for 9 months ended September 30, 2014 and 2015, respectively)			(129)	(27)
Reclassification adjustment, (net of tax, $3 and $2 for 9 months ended September 30, 2014 and 2015, respectively)			(4)	0
Balance end of period	$ (318)	$ (56)	$ (318)	$ (56)