Leases

9 Months Ended

Sep. 30, 2020

Our leases primarily relate to office facilities that have remaining terms of up to 10.2 years, some of which include one or more options to renew with renewal terms of up to 5 years and some of which include options to terminate the leases within the next 3.9 years. All of our leases are classified as operating leases.

The components of lease expense were as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Operating lease cost	$	3,836	$	3,288	$	11,088	$	8,321
Short-term lease costs	301		323		815		998
Variable lease costs	1,181		894		3,471		2,407
Total lease costs	$	5,318	$	4,505	$	15,374	$	11,726

Supplemental balance sheet information related to the operating leases was as follows:


	As of September 30, 2020			As of December 31, 2019
	(in thousands, except lease term and discount rate)
Operating lease right-of-use (ROU) assets	$	69,797		$	60,984

Operating lease liabilities, current portion	$	9,568		$	7,179
Operating lease liabilities, non-current portion	77,863			72,294
Total operating lease liabilities	$	87,431		$	79,473

Weighted average remaining lease term (in years) - operating leases	8.0			8.7
Weighted average discount rate - operating leases	7.7		%	7.6		%

Supplemental cash flow information related to leases was as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(in thousands)
Cash paid for amounts included in the measurement of lease liabilities	$	5,743	$	3,006	$	12,103	$	8,421
Operating lease ROU assets obtained in exchange for new lease obligations	$	456	$	3,682	$	16,053	$	64,454

Maturities of operating lease liabilities as of September 30, 2020 were as follows (in thousands):


2020 (for the remaining three months)	$	2,642
2021	16,491
2022	13,859
2023	14,046
2024	13,339
2025 and thereafter	53,933
Total lease payments	$	114,310
Less: imputed interest	(26,879)
Total	$	87,431