Allowance for Credit Losses (Tables)

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

Analysis of Allowance for Credit Losses

The following summarizes the receivables allowance for credit losses (in thousands):

	December 31,
	2021		2020		2019
Balance at beginning of period	$	74	$	34	$	34
Provision for credit losses	342		40		—
Balance at end of period	$	416	$	74	$	34

Summary of Accounts Receivable by Aging

The following tables below summarizes accounts receivable by aging category (in thousands):

	December 31, 2021
	31-60 Days		61-90 Days		91 Days and over		Total over 31 Days		Current		Total balance
Accounts receivable	$	536	$	569	$	1,151	$	2,256	$	22,697	$	24,953
	December 31, 2020
	31-60 Days		61-90 Days		91 Days and over		Total over 31 Days		Current		Total balance
Accounts receivable	$	489	$	7	$	—	$	496	$	13,398	$	13,894