CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - 9 months ended Sep. 30, 2018 - USD ($) shares in Thousands, $ in Thousands	Total	Accumulated Deficit	AOCI Attributable to Parent	Common Stock	Additional Paid-in Capital	Treasury Stock
Balance at Dec. 31, 2017	$ 81,796	$ (715,476)	$ (113)	$ 2,157	$ 812,536	$ (17,308)
Balance (in shares) at Dec. 31, 2017				21,573
Balance (in shares) at Dec. 31, 2017						999
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	994	994
Stock options exercised, net of tax withholdings	0				(16)	$ 16
Stock options exercised, net of tax withholdings (in shares)						1
Issuance of restricted stock, net of tax withholdings	(234)				(2,242)	$ 2,008
Issuance of restricted stock, net of tax withholdings (in shares)						(72)
Stock-based compensation expense	853				853
Other comprehensive income	100		100
Balance at Sep. 30, 2018	$ 83,509	$ (714,482)	$ (13)	$ 2,157	$ 811,131	$ (15,284)
Balance (in shares) at Sep. 30, 2018				21,573
Balance (in shares) at Sep. 30, 2018						926