Income Taxes - Schedule of Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Allowance for doubtful accounts	$ 11,504	$ 4,001
Revenue recognition (timing differences)	21,972	9,042
Net operating loss carryforwards	347	850
Other temporary differences	952	482
Total gross deferred tax assets	34,775	14,375
Less: valuation allowance	(33,476)	(13,926)
Total deferred tax assets	1,299	449
Deferred tax liabilities:
Fixed assets	1,008	442
Total gross deferred tax liabilities	1,008	442
Net deferred tax assets	$ 291	$ 7