Accounts Receivable, Net - Schedule of Changes in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accounts Receivable Net [Abstract]
Balance, beginning of period	$ (610)	$ (377)	$ (374)	$ (336)
Additions	(195)	(8)	(484)	(95)
Write-offs	11	33	64	79
Balance, end of period	$ (794)	$ (352)	$ (794)	$ (352)