Unaudited Condensed Consolidated Statement of Equity - 3 months ended Mar. 31, 2016 - USD ($) $ in Thousands	Total	Stockholders' Equity [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2015	$ 221,697	$ 220,775	$ 205	$ 194,437	$ 26,133	$ 922
Beginning Balance, Shares at Dec. 31, 2015	20,543,130		20,543,130
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (869)	(814)			(814)	(55)
Stock-based compensation expense	985	985		985
Minimum tax withholding paid on behalf of employees for stock awards	(630)	(630)		(630)
Tax valuation adjustment from stock-based compensation	(97)	(97)		(97)
Shares issued through stock plans	0	0	$ 2	(2)
Shares issued through stock plans, shares			165,843
Ending balance at Mar. 31, 2016	$ 221,086	$ 220,219	$ 207	$ 194,693	$ 25,319	$ 867
Ending Balance, Shares at Mar. 31, 2016	20,708,973		20,708,973