Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - 9 months ended Sep. 30, 2018 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock
Balance (in shares) at Dec. 31, 2017		12,142
Balance at Dec. 31, 2017	$ 66,488	$ 121	$ 68,667	$ 65,460	$ (67,760)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of treasury stock			(2,784)		2,784
Stock-based compensation	605		605
Forfeited restricted stock (in shares)		(128)
Forfeited restricted stock		$ (1)	1
Net share settlement related to restricted stock vesting (in shares)		(2)
Net share settlement related to restricted stock vesting	(134)		(134)
Net income (loss)	6,879			6,879
Balance (in shares) at Sep. 30, 2018		12,012
Balance at Sep. 30, 2018	$ 73,838	$ 120	$ 66,355	$ 72,339	$ (64,976)