Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Schedule of Operating Sublease Income Generated under Operating Lease Agreements

The Company subleases some of its unused spaces to third parties. Operating sublease income generated under all operating lease agreements is as follows:
 

	Year ended December 31,
	2021		2020		2019
	(in thousands)
Operating sublease income	$	4,954	$	5,000	$	2,498

Summary of Reconciliation Between Non-cancelable Lease Commitments And Lease Liabilities

The following table provides a reconciliation between non-cancelable lease commitments and lease liabilities as of December 31, 2021:

	Operating leases
Lease commitments (Note 11)	$	385,997
Less: Legally binding minimum lease payments for   leases signed but not yet commenced		—
Less: Present value discount		75,760
Total lease liabilities	$	310,237

Summary of Weighted Average Remaining Lease Terms And Weighted Average Discount Rate For Operating And Finance Leases

The following table provides weighted average remaining lease terms and weighted average discount rate for operating and finance leases as of December 31, 2021:

Weighted-average remaining lease term:	9.6 years
Weighted-average discount rate:	4.5%