Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 23,912	$ 20,549	$ 18,101
Change in fair value of derivative instruments:
Change in fair value of derivative instruments for the period	9	195	(511)
Income tax effect	(3)	(68)	179
Changes from derivative instruments	6	127	(332)
Change in securities:
Unrealized appreciation (depreciation) for the period on AFS securities	(5,091)	(2,910)	4,841
Amortization from transfer of securities from available-for-sale to held-to-maturity securities	(653)	(549)	1,658
Reclassification adjustment for securities gains realized in income	(1,836)	(189)	(988)
Income tax effect	2,653	1,277	(1,929)
Unrealized gains (losses) on securities	(4,927)	(2,371)	3,582
Other Comprehensive Income (Loss), Net of Tax	(4,921)	(2,244)	3,250
Comprehensive Income	$ 18,991	$ 18,305	$ 21,351

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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