Consolidated Statements of Shareholders' Equity (unaudited) - USD ($) $ in Thousands	Total		Accumulated Other Comprehensive Income [Member]	Retained Earnings [Member]	Unearned ESOP Shares [Member]	Common Stock and Related Surplus [Member]
Beginning Balance at Dec. 31, 2016	$ 155,360		$ (3,262)	$ 113,448	$ (1,583)	$ 46,757
Comprehensive income:
Net income (loss)	(1,616)			(1,616)
Other comprehensive income	687		687
Stock Issued During Period, Value, Stock Options Exercised	12					12
Share-based compensation expense	84					84
Stock Issued During Period, Value, Employee Stock Ownership Plan	239				107	132
Stock Issued During Period, Value, Dividend Reinvestment Plan	35					35
Common stock cash dividends declared	(1,182)			(1,182)
Ending Balance at Mar. 31, 2017	153,619		(2,575)	110,650	(1,476)	47,020
Beginning Balance at Dec. 31, 2017	201,505	[1]	1,732	119,827	(1,152)	81,098
Comprehensive income:
Net income (loss)	7,443			7,443
Other comprehensive income	(2,620)		(2,620)
Stock Issued During Period, Value, Stock Options Exercised	4					4
Share-based compensation expense	94					94
Stock Issued During Period, Value, Employee Stock Ownership Plan	127				54	73
Stock Issued During Period, Value, Dividend Reinvestment Plan	63					63
Common stock cash dividends declared	(1,607)			(1,607)
Ending Balance at Mar. 31, 2018	$ 205,009		$ (888)	$ 125,663	$ (1,098)	$ 81,332

[1] Derived from audited consolidated financial statements