Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Surplus	Unearned ESOP Shares	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Retained Earnings	Series B Preferred stock	Series B Preferred stock Retained Earnings	Series C Preferred stock	Series C Preferred stock Retained Earnings
Beginning balance at Dec. 31, 2013	$ 190,749	$ 41,997	$ 1,141	$ 111,017	$ 0	$ (106)	$ (3,286)	$ 39,986
Beginning balance (in shares) at Dec. 31, 2013		131,971	11,407,196
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	19,110							19,110
Dividends on Series preferred stock									$ (320)	$ (320)	$ (378)	$ (378)
Dividends on common stock	(3,959)							(3,959)
Conversion of Series C preferred stock to common stock	0	$ (629)	$ 3	626
Conversion of Series C preferred stock to common stock (in shares)		(6,291)	34,947
Treasury stock acquired at cost	(9)						(9)
Exercise of stock options	643		$ 5	638
Exercise of stock options (in shares)			49,560
Tax benefit resulting from exercise of stock options, net adjustment	21			21
Increase in ESOP obligation, net of repayments	(250)				(250)
Stock option and restricted stock compensation expense	442			442
Change in accumulated other comprehensive income/loss	2,963					2,963
Ending balance at Dec. 31, 2014	209,012	$ 41,368	$ 1,149	112,744	(250)	2,857	(3,295)	54,439
Ending balance (in shares) at Dec. 31, 2014		125,680	11,491,703
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	11,017							11,017
Dividends on Series preferred stock									(320)	(320)	(367)	(367)
Dividends on common stock	(4,075)							(4,075)
Conversion of Series C preferred stock to common stock	0	$ (248)	$ 1	247
Conversion of Series C preferred stock to common stock (in shares)		(2,480)	13,759
Reclassification of treasury stock per the LCBA	0		$ (15)	(3,280)			3,295
Reclassification of treasury stock per the LCBA (in shares)			(150,967)
Exercise of stock options	99		$ 1	98
Exercise of stock options (in shares)			7,655
Tax benefit resulting from distribution from Directors Deferred Compensation Plan	420			420
Tax benefit for dividends paid to the ESOP	187			187
Increase in ESOP obligation, net of repayments	(843)				(843)
Stock option and restricted stock compensation expense	355			355
Change in accumulated other comprehensive income/loss	(2,348)					(2,348)
Ending balance at Dec. 31, 2015	213,137	$ 41,120	$ 1,136	110,771	(1,093)	509	0	60,694
Ending balance (in shares) at Dec. 31, 2015		123,200	11,362,150
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	9,439							9,439
Dividends on Series preferred stock									$ (2,496)	$ (2,496)	$ (365)	$ (365)
Dividends on common stock	(4,065)							(4,065)
Conversion of Series C preferred stock to common stock	0	$ (10)	$ 0	10
Conversion of Series C preferred stock to common stock (in shares)		(102)	566
Tax benefit resulting from distribution from Directors Deferred Compensation Plan	127			127
Tax benefit for dividends paid to the ESOP	154			154
Increase in ESOP obligation, net of repayments	(140)				(140)
Stock option and restricted stock compensation expense	210			210
ESOP compensation expense	(106)			(106)
Change in accumulated other comprehensive income/loss	(1,519)					(1,519)
Ending balance at Dec. 31, 2016	$ 214,376	$ 41,110	$ 1,136	$ 111,166	$ (1,233)	$ (1,010)	$ 0	$ 63,207
Ending balance (in shares) at Dec. 31, 2016		123,098	11,362,716