CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands		Total	Common Stock [Member]	Treasury Stock [Member]	Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2013		$ 55,483	$ 3,943		$ 45,281	$ 6,609	$ (350)
Common stock issued in offering and Proceeds from sale of stock		41,728	3,285		38,443
Options and warrants exercised		297	22		275
Surrendered shares		(17)		$ (17)
Shares repurchased		(6)		(6)
Dividends declared		(197)				(197)
Stock-based compensation		228	14		214
Net income		5,397				5,397
Other comprehensive income (loss), net		471					471
Ending Balance at Dec. 31, 2014		103,384	7,264	(23)	84,213	11,809	121
Surrendered shares		(39)		(39)
Shares repurchased		(572)		(572)
Reclassification of treasury stock under the LBCA	[1]		(41)	$ 634	(593)
Options exercised		135	10		125
Dividends declared		(232)				(232)
Stock-based compensation		385	31		354
Net income		7,073				7,073
Other comprehensive income (loss), net		(784)					(784)
Ending Balance at Dec. 31, 2015		109,350	7,264		84,099	18,650	(663)
Options and warrants exercised		165	12		153
Surrendered shares		(65)	(4)		(61)
Shares repurchased		(3,473)	(222)		(3,251)
Dividends declared		(303)				(303)
Stock-based compensation		609	52		557
Net tax effect of stock-based compensation		2			2
Net income		7,880				7,880
Other comprehensive income (loss), net		(1,408)					(1,408)
Ending Balance at Dec. 31, 2016		$ 112,757	$ 7,102		$ 81,499	$ 26,227	$ (2,071)

[1] (1) Effective January 1, 2015, companies incorporated in Louisiana became subject to the Louisiana Business Corporation Act ("LBCA"), which eliminates the concept of treasury stock and provides that shares reacquired by a company are to be treated as authorized but unissued. Refer to Note 1 for further discussion.