Accounts Receivable, Net

12 Months Ended

Dec. 31, 2018

Accounts Receivable Net [Abstract]

Accounts Receivable, Net

(3) Accounts Receivable, Net

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

	As of December 31,
	2018			2017
Accounts receivable	$	41,818		$	32,562
Allowance for doubtful accounts		(711	)		(863	)
Net accounts receivable	$	41,107		$	31,699

Bad debt expense for the years ended December 31, 2018, 2017 and 2016 was $0.1 million, $0.6 million and $0.4 million, respectively.

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

	As of December 31,
	2018			2017
Allowance, at beginning of period	$	(863	)	$	(374	)
Charged to bad debt expense		(58	)		(558	)
Write-offs, net of recoveries		210			69
Allowance, at end of period	$	(711	)	$	(863	)

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

	As of December 31,
	2018			2017
Balance, beginning of period	$	(100	)	$	(45	)
Additions		(193	)		(79	)
Write-offs		93			24
Balance, end of period	$	(200	)	$	(100	)

As a result of the adoption of the new revenue standard, the Company reclassified its sales reserve from a current asset to a current liability within the consolidated financial statements, effective January 1, 2018.