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 |