Discontinued Operations - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Loss from discontinued operations, net of income tax	$ 24	$ 200	$ 16	$ 42	$ 315	$ 47	$ 288	$ 142		$ 282	$ 792	$ 6,924
Russia, Federal division and IT Outsourcing Practice
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Loss from discontinued operations, net of income tax										$ 282	$ 792	$ 6,924
Russia, Federal division and IT Outsourcing Practice | Reclassification out of Accumulated Other Comprehensive Income | Foreign Currency Translation
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Loss from discontinued operations, net of income tax									$ 1,000