Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Summary of opening and closing balances

The following table summarizes the opening and closing balances of our accounts receivable, net; contract assets, current; contract assets, non-current; deferred revenue, current; and deferred revenue, non-current (in thousands):

	Accounts receivable, net (1)		Contract assets, current		Contract assets, non-current		Deferred revenue, current		Deferred revenue, non-current
Beginning balances as of January 1, 2021	$	676,738	$	13,534	$	54,050	$	101,258	$	71,242
Closing balances as of December 31, 2021	681,809		65,392		55,486		109,736		87,495
Increase	$	5,071	$	51,858	$	1,436	$	8,478	$	16,253
Beginning balances as of January 1, 2020	$	689,134	$	10,033	$	31,521	$	76,193	$	46,555
Closing balances as of December 31, 2020	676,738		13,534		54,050		101,258		71,242
Increase (Decrease)	$	(12,396)	$	3,501	$	22,529	$	25,065	$	24,687

(1) The net change in our allowance for credit losses was insignificant during the year ended December 31, 2021.