Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Consolidated Statements of Comprehensive Income
Net income	$ 5,457	$ 3,845	$ 10,029	$ 7,167
Unrealized holding (losses) gains on available-for-sale securities arising during the period	6,269	8,076	10,347	5,767
Related tax benefit (expense)	(2,520)	(3,233)	(4,134)	(2,308)
Holding (losses) gains after tax on available-for-sale securities	3,749	4,843	6,213	3,459
Less: Reclassification adjustment for the net (losses) gains realized during the period
Net realized (losses) gains	(131)		(267)	(61)
Income tax benefit (expense) on net realized gains	52		106	25
Net realized (losses) gains after tax	(79)		(161)	(36)
Other comprehensive (loss) income on available-for-sale securities	3,828	4,843	6,374	3,495
Accretion of net unrealized holding gains on held-to-maturity transferred from available-for-sale securities		5,715		5,939
Related tax expense		(2,354)		(2,446)
Other comprehensive income on held-to-maturity securities		3,361		3,493
Changes in fair value of derivatives used for cashflow hedges	(613)	(1,597)	(464)	(4,024)
Related tax benefit	245	640	184	1,612
Other comprehensive loss on cashflow hedges	(368)	(957)	(280)	(2,412)
Total other comprehensive income (loss) income	3,460	7,247	6,094	4,576
Total comprehensive income	$ 8,917	$ 11,092	$ 16,123	$ 11,743