Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Condensed Consolidated Statements of Operations [Abstract]
Revenues	$ 51,751	$ 46,900	$ 153,173	$ 133,736
Cost of revenues	34,244	31,695	103,361	92,464
Gross margin	17,507	15,205	49,812	41,272
Selling, general and administrative expenses	12,417	10,136	37,144	30,479
Depreciation and amortization	2,622	2,290	7,267	6,602
Operating income	2,468	2,779	5,401	4,191
Foreign currency transaction (gains) losses on intercompany balances	1,055	(1,274)	176	438
Interest expense, net	398	315	1,223	970
Loss on debt extinguishment				1,381
Earnings before income taxes	1,015	3,738	4,002	1,402
Income tax expense	593	1,177	2,498	2,241
Net earnings (loss)	$ 422	$ 2,561	$ 1,504	$ (839)
Basic earnings (loss) per common share (Note B)	$ 0.02	$ 0.11	$ 0.06	$ (0.04)
Diluted earnings (loss) per common share (Note B)	$ 0.02	$ 0.11	$ 0.06	$ (0.04)
Weighted-average common shares outstanding (Note B):
Basic	24,744	24,218	24,510	23,798
Diluted	25,213	24,388	24,901	23,798