Accounts Receivable, Net

12 Months Ended

Dec. 31, 2020

(3) Accounts Receivable, Net

On January 1, 2020, the Company adopted ASU 2016-13 using the modified retrospective approach. See Note 2. The cumulative effect of initially applying ASU 2016-13 had an immaterial impact on the Company’s opening balance of accumulated deficit.

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

	As of December 31,
	2020			2019
Accounts receivable amortized cost	$	98,164		$	69,767
Allowance for credit losses		(3,788	)		(1,125	)
Net accounts receivable	$	94,376		$	68,642

The following table summarizes the changes in the allowance for credit losses for accounts receivable (in thousands):

	Year Ended December 31,
	2020			2019			2018
Balance, beginning of period	$	(1,125	)	$	(711	)	$	(863	)
Provision for expected credit losses		(2,877	)		(971	)		(58	)
Write-offs		214			557			210
Balance, end of period	$	(3,788	)	$	(1,125	)	$	(711	)

Contract assets, net is as follows (in thousands):

	As of December 31,
	2020			2019
Contract asset amortized cost	$	2,560		$	1,959
Allowance for credit losses		(398	)		—
Net contract asset	$	2,162		$	1,959

The following table summarizes the changes in the allowance for credit losses for contract assets (in thousands):

	Year Ended December 31, 2020
Balance, beginning of period	$	—
Provision for expected credit losses		(398	)
Balance, end of period	$	(398	)

Credit loss expense for the years ended December 31, 2020, 2019 and 2018 was $2.7 million, $0.7 million and $0.1 million, respectively.

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

	Year Ended December 31,
	2020			2019			2018
Balance, beginning of period	$	(175	)	$	(200	)	$	(100	)
(Additions) reductions		(85	)		16			(193	)
Write-offs		85			9			93
Balance, end of period	$	(175	)	$	(175	)	$	(200	)