Summary of Significant Accounting Policies - Schedule of Changes in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Receivables [Abstract]
Balance, beginning of period	$ 1,792	$ 1,125
Add: provision for doubtful accounts	561	1,960
Less: write-offs, net of recoveries and other adjustments	(132)	(1,293)
Balance, end of period	$ 2,221	$ 1,792