Accounts Receivable, Net (Tables)

6 Months Ended

Jun. 30, 2018

Accounts Receivable Net [Abstract]

Schedule of Accounts Receivable Net

Accounts receivable, net is as follows (in thousands):

	As of			As of
	June 30, 2018			December 31, 2017
Accounts receivable	$	33,780		$	32,662
Allowance for doubtful accounts		(716	)		(963	)
Net accounts receivable	$	33,064		$	31,699

Schedule of Changes in Allowance for Doubtful Accounts

The following table summarizes the changes in the allowance for doubtful accounts (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Balance, beginning of period	$	(637	)	$	(359	)	$	(863	)	$	(374	)
Additions		(83	)		(289	)		109			(289	)
Write-offs		4			38			38			53
Balance, end of period	$	(716	)	$	(610	)	$	(716	)	$	(610	)

Schedule of Changes in Sales Reserve

The following table summarizes the changes in the sales reserve (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Balance, beginning of period	$	(78	)	$	(125	)	$	(100	)	$	(45	)
Additions		(133	)		—			(133	)		(80	)
Write-offs		2			9			24			9
Balance, end of period	$	(209	)	$	(116	)	$	(209	)	$	(116	)