CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Preferred Stock	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income / (Loss)	Total
Balance at Dec. 31, 2015	$ 19,519	$ 193,364	$ 38,773	$ (6,220)	$ 245,436
Balance (in shares) at Dec. 31, 2015	21,004	32,113,479
Increase (Decrease) in Shareholders' Equity
Net income			6,106		6,106
Other comprehensive income				2,722	2,722
Amortization of restricted stock awards, net of forfeitures and taxes		$ 186			186
Cash dividend declared			(3,394)		(3,394)
Stock option expense, net of forfeitures and taxes		245			245
Stock options exercised		$ 358			358
Stock options exercised (in shares)		57,441
Balance at Mar. 31, 2016	$ 19,519	$ 194,153	41,485	(3,498)	251,659
Balance (in shares) at Mar. 31, 2016	21,004	32,170,920
Balance at Dec. 31, 2016		$ 215,237	52,527	(7,914)	259,850
Balance (in shares) at Dec. 31, 2016		37,941,007
Increase (Decrease) in Shareholders' Equity
Net income			6,538		6,538
Other comprehensive income				509	509
Issuance of restricted stock awards, net (in shares)		1,492
Amortization of restricted stock awards, net of forfeitures and taxes		$ 221			221
Cash dividend declared			(3,795)		(3,795)
Stock option expense, net of forfeitures and taxes		216			216
Stock options exercised		$ 365			365
Stock options exercised (in shares)		52,586
Balance at Mar. 31, 2017		$ 216,039	$ 55,270	$ (7,405)	$ 263,904
Balance (in shares) at Mar. 31, 2017		37,995,085