Leases (Tables)

12 Months Ended

Dec. 31, 2020

The components of lease expense are as follows (in thousands):

	Years Ended December 31,
	2020			2019
Operating lease cost (1)	$	56,348		$	35,146
Sublease income		(2,105	)		(2,622	)
Net operating lease cost	$	54,243		$	32,524

(1) For the years ended December 31, 2020 and 2019, variable lease costs were $12.1 million and $4.9 million, respectively. Variable lease costs primarily include common area maintenance charges.

Schedule of Supplemental Cash Flow Information Related To Leases

Supplemental cash flow information related to leases is as follows (in thousands):

	Years Ended December 31,
	2020		2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$	30,664	$	17,721
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	12,031	$	267,048

Schedule of Supplemental Balance Sheet Information Related to Leases

Supplemental balance sheet information related to leases was as follows (in thousands, except lease term and discount rate):

	As of December 31,
	2020			2019
Operating lease right-of-use assets	$	266,197		$	283,291
Included in accounts payable and accrued liabilities:
Operating lease liability, current		35,647			17,896
Operating lease liability, non-current		307,936			301,694
Total operating lease liability	$	343,583		$	319,590

Weighted Average Remaining Lease Term:
Operating leases (in years)	9.05			9.98
Weighted Average Discount Rate:
Operating leases		4.60	%		4.65	%

Schedule of Future Lease Payments under Operating Leases

Future lease payments under operating leases as of December 31, 2020 were as follows (in thousands):

Year Ending December 31,	Operating Leases
2021	$	50,889
2022		47,377
2023		47,597
2024		46,635
2025		46,295
Thereafter		201,852
Total future lease payments		440,645
Less: imputed interest		(81,076	)
Less: expected tenant improvement allowance		(15,986	)
Total	$	343,583