Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income
Balance at Dec. 31, 2009	$ 41,439	$ 233	$ 562,563	$ (524,661)	$ 3,304
Balance, shares at Dec. 31, 2009		23,272,892
Net earnings	3,253			3,253
Foreign currency translation adjustments	380				380
Issuances of common stock:
Restricted share awards		6	(6)
Restricted share awards, shares		560,460
Restricted shares remitted by employees for taxes	(214)		(214)
Restricted shares remitted by employees for taxes, shares		(28,547)
Stock option exercises	109		109
Stock option exercises, shares		38,633
2006 MIP Performance Unit settlements		1	(1)
2006 MIP Performance Unit settlements, shares		134,490
Forfeited restricted share awards		(1)	1
Forfeited restricted share awards, shares		(45,154)
Stock-based compensation expense	3,876		3,876
Balance at Dec. 31, 2010	48,843	239	566,328	(521,408)	3,684
Balance, shares at Dec. 31, 2010		23,932,774
Net earnings	2,816			2,816
Foreign currency translation adjustments	(519)				(519)
Issuances of common stock:
Restricted share awards		7	(7)
Restricted share awards, shares		694,030
Shares issued for acquisition	3,722	6	3,716
Shares issued for acquisition, shares		640,614
Restricted shares remitted by employees for taxes	(1,063)	(1)	(1,062)
Restricted shares remitted by employees for taxes, shares		(132,974)
Stock option exercises	353	1	352
Stock option exercises, shares		116,073
2006 MIP Performance Unit settlements, shares		26,898
Forfeited restricted share awards		(1)	1
Forfeited restricted share awards, shares		(168,661)
Stock-based compensation expense	4,938		4,938
Balance at Dec. 31, 2011	59,090	251	574,266	(518,592)	3,165
Balance, shares at Dec. 31, 2011		25,108,754
Net earnings	5,392			5,392
Foreign currency translation adjustments	363				363
Issuances of common stock:
Restricted share awards		5	(5)
Restricted share awards, shares		500,128
Shares issued for stock offering	14,682	25	14,657
Shares issued for stock offering, shares		2,500,000
Restricted shares remitted by employees for taxes	(1,605)	(2)	(1,603)
Restricted shares remitted by employees for taxes, shares		(161,514)
Stock option exercises	559	2	557
Stock option exercises, shares	(141,849)	141,849
Forfeited restricted share awards		(2)	2
Forfeited restricted share awards, shares		(196,085)
Stock-based compensation expense	6,171		6,171
Balance at Dec. 31, 2012	$ 84,652	$ 279	$ 594,045	$ (513,200)	$ 3,528
Balance, shares at Dec. 31, 2012		27,893,132