Leases

12 Months Ended

Dec. 31, 2020

Our leases primarily relate to office facilities that have remaining terms of up to 9.9 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 6.7 years. All of our leases are classified as operating leases.

The components of lease expense were as follows:


	Year Ended December 31,
	2020		2019
	(in thousands)
Operating lease costs	$	14,881	$	11,299
Short-term lease costs	1,033		1,140
Variable lease costs	4,870		3,388
Total lease costs	$	20,784	$	15,827

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


	As of December 31,
	2020			2019
	(in thousands, except lease term and discount rate)
Operating ROU assets	$	67,178		$	60,984

Operating lease liabilities, current portion	$	9,612		$	7,179
Operating lease liabilities, non-current portion	75,737			72,294
Total operating lease liabilities	$	85,349		$	79,473

Weighted average remaining lease terms (in years) - operating leases	7.9			8.7
Weighted average discount rate - operating leases	7.7		%	7.6		%

Supplemental cash flow information related to leases was as follows:


	As of December 31,
	2020		2019
	(in thousands)
Cash paid for amounts included in the measurement of lease liabilities	$	16,159	$	11,720
ROU assets obtained in exchange for new lease obligations	$	15,838	$	65,873

Maturities of operating lease liabilities as of December 31, 2020 were as follows (in thousands):


2021	$	15,035
2022	13,887
2023	14,177
2024	13,464
2025	12,552
Thereafter	41,958
Total lease payments	$	111,073
Less: imputed interest	(25,724)
Total	$	85,349