Leases (Tables)

9 Months Ended

Sep. 30, 2021

Leases [Abstract]

Summary of Additional Details of Leases

The following table provides additional details of our facility leases presented in the condensed balance sheet as of September 30, 2021 (dollars in thousands):

Facilities
Right-of-use assets	$	13,580
Current portion of lease liabilities	3,391
Operating lease liability, net of current portion	10,669
Total	$	14,060
Weighted-average remaining life (years)	3.70
Weighted-average discount rate	6.86		%

Summary of Lease Costs

Lease costs, which are included in operating expenses in our statements of operations, were as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Operating lease expense	$	1,096	$	648	$	2,606	$	1,944
Cash paid for operating leases	$	829	$	767	$	2,383	$	2,288

Summary of Undiscounted Cash Payment Obligations for Operating Lease Liabilities

The following table summarizes our undiscounted cash payment obligations for our operating lease liabilities as of September 30, 2021 (in thousands):

Remainder of 2021	$	1,056
2022	4,292
2023	4,440
2024	4,589
2025	1,321
Thereafter	252
Total undiscounted operating lease payments	15,950
Imputed interest expenses	(1,890)
Total operating lease liabilities	14,060
Less: Current portion of operating lease liability	(3,391)
Operating lease liability, net of current portion	$	10,669