Accounts Receivable and Allowance for Doubtful Accounts (Tables)

6 Months Ended

Jun. 30, 2019

Receivables [Abstract]

Schedule of Allowance for Doubtful Accounts

Movements in the allowance for doubtful accounts are as follows (in thousands):

	Three Months Ended June 30,					Six Months Ended June 30,
	2019			2018		2019			2018
Beginning balance	$	2,101		$	329	$	1,114		$	363
Provision (recoveries)	249			268		1,236			237
Write-offs	(196		)	—		(196		)	(3		)
Ending balance	$	2,154		$	597	$	2,154		$	597