Consolidated Statement of Shareholders' Equity - 3 months ended Mar. 31, 2018 - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Unearned ESOP Shares	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning balance at Dec. 31, 2017	$ (254,015)	$ (40,987)	$ (1,655)	$ (168,412)	$ 937	$ 1,828	$ (45,726)
Beginning balance (in shares) at Dec. 31, 2017		121,875	16,548,829
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	360						360
Dividends on Series B and Series C preferred stock	(810)						(810)
Dividends on common stock, $0.01 per share	(165)						(165)
Restricted stock grant (in shares)			52,278
Restricted stock grant			$ 5	(5)
Restricted stock forfeitures (in shares)			(12,375)
Restricted stock forfeitures			$ (1)	1
ESOP shares released for allocation	31				31
ESOP compensation expense	10			10
Exercise of stock options	429		$ 3	426
Exercise of stock options (in shares)			33,079
Stock option and restricted stock compensation expense	(79)			(79)
Change in accumulated other comprehensive loss	(2,954)					(2,954)
Ending balance at Mar. 31, 2018	$ (250,837)	$ 40,987	$ (1,662)	$ (168,765)	$ 906	$ 4,782	$ (45,111)
Ending balance (in shares) at Mar. 31, 2018		121,875	16,621,811