Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2021

Receivables [Abstract]

Accounts Receivable

	June 30, 2021		December 31, 2020
	(in thousands)
Accounts receivable	$	53,829	$	47,893
Less:  Allowance for credit losses	(518)		(506)
Total, net	$	53,311	$	47,387

Allowance for Doubtful Accounts

	Three Months Ended				Six Months Ended
	June 30, 2021		June 30, 2020		June 30, 2021		June 30, 2020
Allowance for credit losses:	(in thousands)
Balance, beginning of period	$	493	$	647	$	506	$	353
Provisions (recoveries) for expected credit	25		(218)		12		76
losses, net of adjustments
Balance, end of period	$	518	$	429	$	518	$	429