Consolidated Statement of Shareholders' Equity (unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Unearned ESOP Shares	Accumulated Other Comprehensive (Loss) Income	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2017		121,875	16,548,829
Beginning balance at Dec. 31, 2017	$ 254,015	$ 40,987	$ 1,655	$ 168,412	$ (937)	$ (1,828)	$ 45,726
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	360						360
Dividends on Series B and Series C preferred stock	(810)						(810)
Dividends on common stock	(165)						(165)
Restricted stock grant (in shares)			52,278
Restricted stock grant	0		$ 5	(5)
Restricted stock forfeitures (in shares)			(12,375)
Restricted stock forfeitures			$ (1)	1
ESOP shares released for allocation	31				31
Exercise of stock options (in shares)			33,079
Exercise of stock options	429		$ 3	426
ESOP compensation expense	10			10
Stock option and restricted stock compensation expense	(79)			(79)
Change in accumulated other comprehensive income	(2,954)					(2,954)
Ending balance (in shares) at Mar. 31, 2018		121,875.000	16,621,811.000
Ending balance at Mar. 31, 2018	250,837	$ 40,987	$ 1,662	168,765	$ (906)	(4,782)	45,111
Beginning balance (in shares) at Dec. 31, 2018		121,721	16,641,017
Beginning balance at Dec. 31, 2018	221,990	$ 40,972	$ 1,664	169,111		(4,035)	14,278
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(5,830)						(5,830)
Dividends on Series B and Series C preferred stock	(810)						(810)
Dividends on common stock	(166)						(166)
Restricted stock grant (in shares)			77,704
Restricted stock grant	0		$ 7	(7)
Restricted stock forfeitures (in shares)			(3,050)
Stock option and restricted stock compensation expense	140			140
Change in accumulated other comprehensive income	5,842					5,842
Ending balance (in shares) at Mar. 31, 2019		121,721.000	16,715,671.000
Ending balance at Mar. 31, 2019	$ 221,166	$ 40,972	$ 1,671	$ 169,244		$ 1,807	$ 7,472