Consolidated Statements of Changes in Stockholders' Equity - 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, 2015	14,907
Balance at Dec. 31, 2015	$ 283	$ 17,521	$ 32,023	$ (2,175)	$ 47,652
Net loss			(5,258)		(5,258)
Other comprehensive loss				(87)	(87)
Special dividends declared			(21,636)		(21,636)
Restricted stock grants (in shares)	231
Stock purchase and retirement (in shares)	(400)
Stock purchase and retirement	$ (8)	(1,004)			(1,012)
Stock purchase and retirement for tax withholdings on vesting of restricted awards (in shares)	(7)
Stock purchase and retirement for tax withholdings on vesting of restricted awards		(15)			(15)
Stock-based compensation		338			338
Balance (in shares) at Dec. 31, 2016	14,731
Balance at Dec. 31, 2016	$ 275	16,840	5,129	(2,262)	19,982
Net loss			(7,709)		(7,709)
Other comprehensive loss				(160)	(160)
Special dividends declared			(165)		(165)
Restricted stock grants (in shares)	458
Stock purchase and retirement for tax withholdings on vesting of restricted awards (in shares)	(163)
Stock purchase and retirement for tax withholdings on vesting of restricted awards		(136)			(136)
Stock-based compensation		423			423
Restricted stock forfeited (in shares)	(106)
Other	$ 23	(23)
Balance (in shares) at Dec. 31, 2017	14,920
Balance at Dec. 31, 2017	$ 298	$ 17,104	$ (2,745)	$ (2,422)	$ 12,235