Discontinued Operation - Income Statements Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]
Service revenue	$ 107,721	$ 185,187
Operating expenses:
Service costs	92,588	143,607
Sales and marketing	5,632	10,170
Product and development	8,203	12,002
General and administrative	14,819	20,263
Amortization of intangible assets	4,243	7,890
Total operating expenses	125,485	193,932
Operating loss	(17,764)	(8,745)
Other income (expense), net	7,017	4,174
Loss before income taxes	(10,747)	(4,571)
Income tax expense	(461)	(1,385)
Net loss	$ (11,208)	$ (5,956)