CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Less: ESOP Owned Shares [Member]	Total
Balance at Dec. 31, 2017	$ 15,154	$ 85,888	$ 120,589	$ (446)	$ (5,858)	$ (57,121)	$ 158,206
Balance (in shares) at Dec. 31, 2017	15,153,510
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	5,501	0	0		5,501
Cash dividends, common	0	0	(2,215)	0	0		(2,215)
Other comprehensive income (loss), (net of tax)	0	0	0	(3,160)	0	0	(3,160)
Balance at Mar. 31, 2018	$ 15,154	85,888	123,875	(3,606)	(5,858)	(57,121)	158,332
Balance (in shares) at Mar. 31, 2018	15,153,510
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative change in accounting principle	$ 0	0	(1,279)	0	0	0	(1,279)
Balance at Dec. 31, 2018	$ 14,772	80,412	119,834	(2,243)	0	(58,195)	$ 154,580
Balance (in shares) at Dec. 31, 2018	14,771,520						14,771,520
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	4,773	0	0	0	$ 4,773
Other comprehensive income (loss), (net of tax)	0	0	0	2,296	0	0	2,296
Balance at Mar. 31, 2019	$ 14,772	$ 80,412	$ 123,328	$ 53	$ 0	$ (58,195)	$ 160,370
Balance (in shares) at Mar. 31, 2019	14,771,520						14,771,520