Consolidated Statement of Stockholders' Equity (USD $)	Total	Common Stock	Treasury Stock	Additional Paid-In	Retained	Non-controlling Interest
Beginning at Dec. 31, 2012	$ 225,234,000	$ 275,000	$ (3,003,000)	$ 160,973,000	$ 66,939,000	$ 50,000
Treasury stock, shares at Dec. 31, 2012	(317,731)		(317,731)
Balance, shares at Dec. 31, 2012	27,530,220	27,530,220
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	582,000			582,000
Exercise of stock options	206,000	1,000		205,000
Exercise of stock options, shares	33,966	33,966
Net income (loss)	(1,090,000)				(1,090,000)
Net Income (Loss) Attributable to Noncontrolling Interest	(7,000)					(7,000)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(1,097,000)
Beginning at Mar. 31, 2013	$ 224,925,000	$ 276,000	$ (3,003,000)	$ 161,760,000	$ 65,849,000	$ 43,000
Treasury stock, shares at Mar. 31, 2013	(317,731)		(317,731)
Balance, shares at Mar. 31, 2013	27,564,186	27,564,186