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, 2014	$ 19,519	$ 133,676	$ 33,014	$ (1,851)	$ 184,358
Balance (in shares) at Dec. 31, 2014	21,004	26,503,505
Increase (Decrease) in Shareholders' Equity
Net income			4,138		4,138
Other comprehensive income				534	534
Amortization of restricted stock awards, net of forfeitures and taxes		$ (14)			(14)
Cash dividend declared per share			(2,569)		(2,569)
Stock option expense, net of forfeitures and taxes		224			224
Stock options exercised		$ 106			106
Stock options exercised (in shares)		19,234
Balance at Mar. 31, 2015	$ 19,519	$ 133,992	34,583	(1,317)	186,777
Balance (in shares) at Mar. 31, 2015	21,004	26,522,739
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 per share			(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