Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Revenue	$ 41,981	$ 50,205	$ 79,882	$ 95,306
Operating expenses:
Cost of revenue	29,944	32,522	58,776	64,060
Selling, general and administrative expenses	11,037	11,629	21,013	22,209
Depreciation of property and equipment	1,586	2,027	3,268	4,035
Amortization of intangible assets	902	1,332	1,805	2,608
Total operating expenses	43,469	47,510	84,862	92,912
Operating income (loss)	(1,488)	2,695	(4,980)	2,394
Foreign currency transaction (gains) losses on short-term intercompany balances	(163)	225	(148)	582
Interest expense (income), net	(43)	53	11	(164)
Income (loss) before income taxes	(1,282)	2,417	(4,843)	1,976
Income tax expense	186	586	299	642
Net income (loss)	$ (1,468)	$ 1,831	$ (5,142)	$ 1,334
Basic earnings (loss) per common share (Note B) (usd per share)	$ (0.05)	$ 0.06	$ (0.17)	$ 0.05
Diluted earnings (loss) per common share (Note B) (usd per share)	$ (0.05)	$ 0.06	$ (0.17)	$ 0.05
Weighted-average common shares outstanding (Note B):
Basic (shares)	29,733	29,053	29,945	28,912
Diluted (shares)	29,733	29,436	29,945	29,366