Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2019	19,238
Balance at Dec. 31, 2019	$ 80,606	$ 9,184	$ (46,300)	$ (20,798)	$ 22,692
Share-based compensation (in shares)	68
Share-based compensation	$ 865	186			1,051
Vested restricted stock issued (in shares)	17
Vested restricted stock issued	$ 186	(186)			0
Shares cancelled to pay tax liability (in shares)	(42)
Shares cancelled to pay tax liability	$ (522)				(522)
Other compreshensive income - pension, net				206	206
Net income (loss)			(1,074)		(1,074)
Balance (in shares) at Mar. 31, 2020	19,281
Balance at Mar. 31, 2020	$ 81,135	9,184	(47,374)	(20,592)	22,353
Balance (in shares) at Dec. 31, 2019	19,238
Balance at Dec. 31, 2019	$ 80,606	9,184	(46,300)	(20,798)	22,692
Other compreshensive income - pension, net					412
Net income (loss)					(1,231)
Balance (in shares) at Jun. 30, 2020	19,291
Balance at Jun. 30, 2020	$ 81,251	9,184	(47,531)	(20,386)	22,518
Balance (in shares) at Mar. 31, 2020	19,281
Balance at Mar. 31, 2020	$ 81,135	9,184	(47,374)	(20,592)	22,353
Share-based compensation (in shares)
Share-based compensation		163			163
Vested restricted stock issued (in shares)	14
Vested restricted stock issued	$ 163	(163)			0
Shares cancelled to pay tax liability (in shares)	(4)
Shares cancelled to pay tax liability	$ (47)				(47)
Other compreshensive income - pension, net				206	206
Net income (loss)			(157)		(157)
Balance (in shares) at Jun. 30, 2020	19,291
Balance at Jun. 30, 2020	$ 81,251	9,184	(47,531)	(20,386)	22,518
Balance (in shares) at Dec. 31, 2020	19,312
Balance at Dec. 31, 2020	$ 81,485	9,184	(48,904)	(21,698)	20,067
Share-based compensation (in shares)	60
Share-based compensation	$ 748	163			911
Vested restricted stock issued (in shares)	14
Vested restricted stock issued	$ 163	(163)			0
Shares cancelled to pay tax liability (in shares)	(34)
Shares cancelled to pay tax liability	$ (424)				(424)
Other compreshensive income - pension, net				221	221
Net income (loss)			(934)		(934)
Balance (in shares) at Mar. 31, 2021	19,352
Balance at Mar. 31, 2021	$ 81,972	9,184	(49,838)	(21,477)	19,841
Balance (in shares) at Dec. 31, 2020	19,312
Balance at Dec. 31, 2020	$ 81,485	9,184	(48,904)	(21,698)	20,067
Other compreshensive income - pension, net					442
Net income (loss)					945
Balance (in shares) at Jun. 30, 2021	19,362
Balance at Jun. 30, 2021	$ 82,104	9,184	(47,959)	(21,256)	22,073
Balance (in shares) at Mar. 31, 2021	19,352
Balance at Mar. 31, 2021	$ 81,972	9,184	(49,838)	(21,477)	19,841
Share-based compensation (in shares)
Share-based compensation		184			184
Vested restricted stock issued (in shares)	15
Vested restricted stock issued	$ 184	(184)			0
Shares cancelled to pay tax liability (in shares)	(5)
Shares cancelled to pay tax liability	$ (52)				(52)
Other compreshensive income - pension, net				221	221
Net income (loss)			1,879		1,879
Balance (in shares) at Jun. 30, 2021	19,362
Balance at Jun. 30, 2021	$ 82,104	$ 9,184	$ (47,959)	$ (21,256)	$ 22,073