Consolidated Statement of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Treasury Stock	Additional Paid-In	Retained	Non-controlling Interest
Beginning balance at Dec. 31, 2011	$ 232,933	$ 274	$ (3,003)	$ 157,560	$ 78,102	$ 0
Beginning treasury stock, shares at Dec. 31, 2011			(317,731)
Beginning balance, shares at Dec. 31, 2011		27,436,922
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	3,115			3,115
Exercise of stock options, shares	56,658	56,658
Exercise of stock options	299	1		298
Issue restricted stock, shares		36,640
Issue restricted stock	0	0		0
Noncontrolling interest, acquired	16					16
Distributions to noncontrolling interest	(34)					(34)
Net (loss) income attributable to common stockholders	(11,866)				(11,866)
Ending balance at Dec. 31, 2012	224,531	275	(3,003)	160,973	66,236	50
Ending treasury stock, shares at Dec. 31, 2012			(317,731)
Ending balance, shares at Dec. 31, 2012		27,530,220
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	2,141			2,141
Exercise of stock options, shares	155,731	155,731
Exercise of stock options	859	3		856
Issue restricted stock, shares		24,824
Issue restricted stock	0	0
Distributions to noncontrolling interest	(50)					(50)
Net (loss) income attributable to common stockholders	331				331
Ending balance at Dec. 31, 2013	227,812	278	(3,003)	163,970	66,567	0
Ending treasury stock, shares at Dec. 31, 2013	(317,731)		(317,731)
Ending balance, shares at Dec. 31, 2013	27,710,776	27,710,775
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,594			1,594
Exercise of stock options, shares	143,282	143,282
Exercise of stock options	870	1		869
Issue restricted stock, shares		115,726
Issue restricted stock	0	0
Purchase of stock into treasury, shares	(43,500)		(43,500)
Purchase of stock into treasury	(436)		(436)
Net (loss) income attributable to common stockholders	6,877				6,877
Ending balance at Dec. 31, 2014	$ 236,717	$ 279	$ (3,439)	$ 166,433	$ 73,444	$ 0
Ending treasury stock, shares at Dec. 31, 2014	(361,231)		(361,231)
Ending balance, shares at Dec. 31, 2014	27,886,596	27,969,783