Condensed Consolidated Statements of Income (Loss) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Revenue	$ 50,205	$ 51,658	$ 95,306	$ 103,307
Operating expenses:
Cost of revenue	31,521	33,312	61,928	67,530
Selling, general and administrative expenses	12,630	12,696	24,341	25,333
Depreciation of property and equipment	2,027	1,579	4,035	3,092
Amortization of intangible assets	1,332	1,459	2,608	3,786
Total operating expenses	47,510	49,046	92,912	99,741
Operating income	2,695	2,612	2,394	3,566
Foreign currency transaction losses on short-term intercompany balances	225	497	582	158
Interest expense (income), net	53	529	(164)	1,033
Earnings before income taxes	2,417	1,586	1,976	2,375
Income tax expense	586	584	642	1,081
Net earnings	$ 1,831	$ 1,002	$ 1,334	$ 1,294
Basic earnings (loss) per common share (Note B) (usd per share)	$ 0.06	$ 0.04	$ 0.05	$ 0.05
Diluted earnings (loss) per common share (Note B) (usd per share)	$ 0.06	$ 0.04	$ 0.05	$ 0.05
Weighted-average common shares outstanding (Note B):
Basic (shares)	29,053	25,257	28,912	25,283
Diluted (shares)	29,436	25,809	29,366	25,787