Schedule II Valuation and Qualifying

12 Months Ended

Dec. 31, 2022

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

Schedule II Valuation and Qualifying Accounts

Schedule II. Valuation and Qualifying Accounts for the Years Ended December 31, 2022, 2021 and 2020

(in thousands):

	Balance at Beginning of Year		Charged (Credited) to Expenses			Charged (Credited) to Other Accounts		Balance at End of Year
Deferred income tax asset:
Valuation allowance
2020	$	37,243	$	(63,346	)	$	257,397	$	231,294
2021	$	231,294	$	(52,563	)	$	—	$	178,731
2022	$	178,731	$	(58,223	)	$	—	$	120,508
Accounts receivable and unbilled contract receivables
Allowance for credit losses
2020	$	2,056	$	975		$	—	$	3,031
2021	$	3,031	$	(1,923	)	$	—	$	1,108
2022	$	1,108	$	(395	)	$	—	$	713