Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock and Related Surplus [Member]	Unearned ESOP Shares [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Series 2009 Preferred Stock [Member]	Series 2009 Preferred Stock [Member] Common Stock and Related Surplus [Member]	Series 2009 Preferred Stock [Member] Retained Earnings [Member]	Series 2009 Preferred Stock [Member] Preferred Stock [Member]	Series 2011 Preferred Stock [Member]	Series 2011 Preferred Stock [Member] Common Stock and Related Surplus [Member]	Series 2011 Preferred Stock [Member] Retained Earnings [Member]	Series 2011 Preferred Stock [Member] Preferred Stock [Member]
Beginning Balance at Dec. 31, 2013	$ 111,072	$ 24,664		$ 77,134	$ (21)				$ 3,519				$ 5,776
Comprehensive income:
Net income	11,356			11,356
Other comprehensive income	2,093				2,093
Exercise of stock options	71	71
Stock compensation expense	1	1
Conversion of Preferred Stock to Common Stock						$ 0	$ 100		(100)	$ 0	$ 12		(12)
Series 2009 Preferred Stock cash dividends declared ($80.00 per share)	(295)							$ (295)
Series 2011 Preferred Stock cash dividends declared ($40.00 per share)	(476)											$ (476)
Issuance of shares of common stock	7,822	7,822
Ending Balance at Dec. 31, 2014	131,644	32,670		87,719	2,072				3,419				5,764
Comprehensive income:
Net income	16,102			16,102
Other comprehensive income	(2,528)				(2,528)
Exercise of stock options	51	51
Stock compensation expense	151	151
Conversion of Preferred Stock to Common Stock						$ (15)	$ 3,404		(3,419)	$ (17)	$ 5,747		(5,764)
Issuance of shares of common stock	4,772	4,772
Purchase of unallocated common stock held by ESOP	(2,250)		$ (2,250)
Stock Issued During Period, Value, Employee Stock Ownership Plan	312	26	286
Stock Repurchased and Retired During Period, Value	(1,080)	(1,080)
Dividends, Common Stock, Cash	(3,398)			(3,398)
Ending Balance at Dec. 31, 2015	143,744	45,741	(1,964)	100,423	(456)				0				0
Comprehensive income:
Net income	17,297			17,297
Other comprehensive income	(2,806)				(2,806)
Exercise of stock options	447	447
Stock compensation expense	200	200
Stock Issued During Period, Value, Employee Stock Ownership Plan	649	268	381
Stock Issued During Period, Value, Dividend Reinvestment Plan	101	101		0
Dividends, Common Stock, Cash	(4,272)			(4,272)
Ending Balance at Dec. 31, 2016	$ 155,360	$ 46,757	$ (1,583)	$ 113,448	$ (3,262)				$ 0				$ 0