Accounts Receivable, Net - Schedule of Changes in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounts Receivable Net [Abstract]
Balance, beginning of period	$ (1,051)	$ (716)	$ (711)	$ (863)
Additions	(253)	(134)	(642)	(25)
Write-offs	148	30	197	68
Balance, end of period	$ (1,156)	$ (820)	$ (1,156)	$ (820)