Accounts Receivable, Net

6 Months Ended

Jun. 30, 2019

Accounts Receivable Net [Abstract]

Accounts Receivable, Net

(3) Accounts Receivable, Net

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

	As of			As of
	June 30, 2019			December 31, 2018
Accounts receivable	$	43,451		$	41,818
Allowance for doubtful accounts		(1,051	)		(711	)
Net accounts receivable	$	42,400		$	41,107

Bad debt expense was $0.2 million and $0.1 million for the three months ended June 30, 2019 and 2018, respectively. Bad debt expense was an expense of $0.4 million and a credit of $0.1 million for the six months ended June 30, 2019 and 2018, respectively.

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
Balance, beginning of period	$	(810	)	$	(637	)	$	(711	)	$	(863	)
(Additions)/reductions		(241	)		(83	)		(389	)		109
Write-offs		—			4			49			38
Balance, end of period	$	(1,051	)	$	(716	)	$	(1,051	)	$	(716	)

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
Balance, beginning of period	$	(200	)	$	(78	)	$	(200	)	$	(100	)
Additions		—			(133	)		—			(133	)
Write-offs		5			2			5			24
Balance, end of period	$	(195	)	$	(209	)	$	(195	)	$	(209	)