Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares 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, 2017	19,040
Balance at Dec. 31, 2017	$ 78,584,000	$ 9,246,000	$ (36,432,000)	$ (20,254,000)	$ 31,144,000
Share-based compensation (in shares)	71
Share-based compensation	$ 845,000	120,000			965,000
Vested restricted stock issued (in shares)	15
Vested restricted stock issued	$ 120,000	(120,000)
Shares cancelled to pay tax liability (in shares)	(35)
Shares cancelled to pay tax liability	$ (411,000)				(411,000)
Pension, net of income taxes of $0				185,000	185,000
Net loss			(964,000)		(964,000)
Balance (in shares) at Mar. 31, 2018	19,091
Balance at Mar. 31, 2018	$ 79,138,000	9,246,000	(37,396,000)	(20,069,000)	30,919,000
Balance (in shares) at Dec. 31, 2017	19,040
Balance at Dec. 31, 2017	$ 78,584,000	9,246,000	(36,432,000)	(20,254,000)	31,144,000
Pension, net of income taxes of $0					370,000
Net loss					(1,534,000)
Balance (in shares) at Jun. 30, 2018	19,103
Balance at Jun. 30, 2018	$ 79,230,000	9,246,000	(37,966,000)	(19,884,000)	30,626,000
Balance (in shares) at Mar. 31, 2018	19,091
Balance at Mar. 31, 2018	$ 79,138,000	9,246,000	(37,396,000)	(20,069,000)	30,919,000
Share-based compensation (in shares)
Share-based compensation		148			148
Vested restricted stock issued (in shares)	16
Vested restricted stock issued	$ 148	(148)
Shares cancelled to pay tax liability (in shares)	(4)
Shares cancelled to pay tax liability	$ (56)				(56)
Pension, net of income taxes of $0				185,000	185,000
Net loss			(570,000)		(570,000)
Balance (in shares) at Jun. 30, 2018	19,103
Balance at Jun. 30, 2018	$ 79,230,000	9,246,000	(37,966,000)	(19,884,000)	30,626,000
Balance (in shares) at Dec. 31, 2018	19,125
Balance at Dec. 31, 2018	$ 79,411,000	9,246,000	(35,934,000)	(21,804,000)	30,919,000
Share-based compensation (in shares)	52
Share-based compensation	$ 951,000	146,000			1,097,000
Vested restricted stock issued (in shares)	16
Vested restricted stock issued	$ 146,000	(146,000)
Stock option exercised (Note 3) (in shares)	25
Stock option exercised (Note 3)	$ 62,000	68,000			130,000
Shares cancelled to pay tax liability (in shares)	(38)
Shares cancelled to pay tax liability	$ (400,000)				(400,000)
Pension, net of income taxes of $0				212,000	212,000
Net loss			(1,094,000)		(1,094,000)
Balance (in shares) at Mar. 31, 2019	19,180
Balance at Mar. 31, 2019	$ 80,170,000	9,314,000	(37,028,000)	(21,592,000)	30,864,000
Balance (in shares) at Dec. 31, 2018	19,125
Balance at Dec. 31, 2018	$ 79,411,000	9,246,000	(35,934,000)	(21,804,000)	30,919,000
Pension, net of income taxes of $0					423,000
Net loss					(1,275,000)
Balance (in shares) at Jun. 30, 2019	19,192
Balance at Jun. 30, 2019	$ 80,297,000	9,314,000	(37,209,000)	(21,381,000)	31,021,000
Balance (in shares) at Mar. 31, 2019	19,180
Balance at Mar. 31, 2019	$ 80,170,000	9,314,000	(37,028,000)	(21,592,000)	30,864,000
Share-based compensation (in shares)
Share-based compensation		183,000			183,000
Vested restricted stock issued (in shares)	17
Vested restricted stock issued	$ 183,000	(183,000)
Shares cancelled to pay tax liability (in shares)	(5)
Shares cancelled to pay tax liability	$ (56,000)				(56,000)
Pension, net of income taxes of $0				211,000	211,000
Net loss			(181,000)		(181,000)
Balance (in shares) at Jun. 30, 2019	19,192
Balance at Jun. 30, 2019	$ 80,297,000	$ 9,314,000	$ (37,209,000)	$ (21,381,000)	$ 31,021,000