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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Consolidated Statements of Comprehensive Income
Net income	$ 9,489	$ 4,427
Unrealized holding (losses) gains on available-for-sale securities arising during the period	(8,808)	4,231
Related tax benefit (expense)	2,484	(1,675)
Holding (losses) gains after tax on available-for-sale securities	(6,324)	2,556
Less: Reclassification adjustment for the net gains (losses) realized during the period
Net realized gains (losses)	35	(136)
Income tax (expense) benefit on net realized gains (losses)	10	(54)
Net realized gains (losses) after tax	(25)	82
Other comprehensive (loss) income on available-for-sale securities	(6,349)	2,638
Changes in fair value of derivatives used for cashflow hedges	1,279	149
Related tax benefit	(362)	(61)
Other comprehensive income on cashflow hedges	917	88
Total other comprehensive (loss) income	(5,432)	2,726
Total comprehensive income	$ 4,057	$ 7,153

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