Leases (Tables)

3 Months Ended

Mar. 31, 2020

Leases [Abstract]

Summary of Components of Lease Expense and Supplemental Cash Flow Information Related to Leases

The components of lease expense were as follows:

	Three Months Ended March 31,
	2020		2019
	(in thousands)
Operating lease cost	$	3,371	$	1,967
Short-term lease costs	290		149
Variable lease costs	922		417
Total lease costs	$	4,583	$	2,533

Supplemental cash flow information related to leases was as follows:

	Three Months Ended March 31, 2020		Three Months Ended March 31, 2019
	(in thousands)
Cash paid for amounts included in the measurement of lease liabilities	$	3,836	$	1,928
ROU assets obtained in exchange for new lease obligations	$	3,990	$	1,866

Summary of Supplemental Balance Sheet Information Related to Operating Leases

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

	As of March 31, 2020			As of December 31, 2019
	(in thousands, except lease term and discount rate)
Operating ROU assets	$	62,942		$	60,984
Operating lease liabilities, current portion	$	8,866		$	7,179
Operating lease liabilities, non-current portion	71,586			72,294
Total operating lease liabilities	$	80,452		$	79,473
Weighted average remaining lease term (in years) - operating leases	8.2			8.7
Weighted average discount rate - operating leases	7.3		%	7.6		%

Summary of Maturities of Operating Lease Liabilities and Future Minimum Payments under Non-cancellable Leases

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

2020 (for the remaining nine months)	$	10,029
2021	14,871
2022	12,238
2023	11,965
2024	11,249
2025 and thereafter	44,134
Total lease payments	$	104,486
Less: imputed interest	(24,034)
Total	$	80,452