Consolidated Statements of Stockholders' Equity Statement - USD ($) $ in Thousands	Total		Common Stock	Additional Paid-in Capital	Accumulated Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)			18,788,000
Beginning balance (in shares)			18,804,000
Beginning balance at Dec. 31, 2017	$ 105,665		$ 188	$ 134,361	$ (4,417)	$ (11,317)	$ (13,150)
Beginning balance, treasury stock (in shares) at Dec. 31, 2017							(1,659,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,893)				(3,893)
Other comprehensive income	2,467	[1]				2,467
Stock-based compensation	853			853
Sale of treasury stock (in shares)							377,000
Sale of treasury stock	4,464			1,478			$ 2,986
Exercise of stock options and issuance of restricted stock awards, net of forfeitures (in shares)			16,000
Exercise of stock options and issuance of restricted stock awards, net of forfeitures	26			26
Ending balance (in shares) at Mar. 31, 2018			18,804,000
Ending balance at Mar. 31, 2018	$ 106,834		$ 188	136,718	(11,058)	(8,850)	$ (10,164)
Ending balance, treasury stock (in shares) at Mar. 31, 2018							(1,282,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)			18,804,000
Beginning balance (in shares)	17,743,971		19,026,000
Beginning balance (in shares)	17,852,047		19,134,000
Beginning balance at Dec. 31, 2018	$ 99,515		$ 190	139,617	(15,397)	(14,731)	$ (10,164)
Beginning balance, treasury stock (in shares) at Dec. 31, 2018	(1,282,422)						(1,282,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (6,179)				(6,179)
Other comprehensive income	1,088	[1]				1,088
Stock-based compensation	874			874
Issuance of common stock under employee stock purchase plan (in shares)			23,000
Issuance of common stock under employee stock purchase plan	218			218
Exercise of stock options and issuance of restricted stock awards, net of forfeitures (in shares)			85,000
Exercise of stock options and issuance of restricted stock awards, net of forfeitures	$ 82		$ 1	81
Ending balance (in shares) at Mar. 31, 2019	17,852,047		19,134,000
Ending balance at Mar. 31, 2019	$ 95,598		$ 191	$ 140,790	$ (21,576)	$ (13,643)	$ (10,164)
Ending balance, treasury stock (in shares) at Mar. 31, 2019	(1,282,422)						(1,282,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	17,852,047		19,134,000

[1] Tax impact was nominal for all periods.