Valuation and Qualifying Account - Allowance for Doubtful Accounts

12 Months Ended

Dec. 31, 2021

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts - Allowance for Doubtful Accounts

Valuation and Qualifying Account - Allowance for Doubtful Accounts

For the Three Years Ending December 31, 2021, 2020 and 2019

Description	Balance at Beginning of Period		Credited to Costs and Expenses		Deductions			Balance at End of Period
	(in thousands)
For the year ended December 31, 2021	$	311	$	—	$	(17)	(a)	$	328
For the year ended December 31, 2020	$	309	$	100	$	98	(b)	$	311
For the year ended December 31, 2019	$	395	$	132	$	218	(c)	$	309

(a)Includes a net addition to the allowance balance of $28 and accounts written-off as uncollectible of $11.

(b)Includes accounts written-off as uncollectible of $98

(c)Includes accounts written-off as uncollectible of $218.