Leases (Tables)

12 Months Ended

Dec. 31, 2023

Leases [Abstract]

Leases Balance Sheet Information

The following table presents the classification of ROU assets and operating lease liabilities as of December 31 (in thousands):

	BALANCE SHEET CLASSIFICATION	2023		2022
ASSETS:
Operating lease assets	Operating right-of-use assets	$	26,584	$	32,752
LIABILITIES:
Operating lease liabilities
Current	Operating lease liabilities, current	$	1,723	$	3,431
Noncurrent	Operating lease liabilities, non-current		28,403		34,255
Total lease liabilities		$	30,126	$	37,686

Summary of Components of Lease Cost

The following table represents the components of operating lease cost, which are included in general and administrative and R&D expense on the consolidated statement of operations, for the years ended December 31 (in thousands):

	2023			2022
Operating lease cost	$	5,527		$	5,230
Short-term lease cost		17			173
Variable lease cost		304			1,949
Sublease income		(3,956	)		(702	)
Total lease cost, net	$	1,892		$	6,650

Summary of Weighted Average Remaining Lease Term and Discount Rate

The weighted-average remaining operating lease term and discount rate were as follows as of December 31:

	2023	2022
Weighted-average remaining lease term (years)	8.0	8.5
Weighted-average discount rate	8.5%	8.3%

Schedule of Supplemental Cash Flow Information

Supplemental disclosure of cash flow information related to operating leases for the years ended December 31 were as follows (in thousands):

	2023			2022
Changes in operating lease liabilities	$	(2,762	)	$	1,931

Schedule of Future Lease Payments

The following table represents a summary of the Company’s future operating lease payments required as of December 31, 2023 (in thousands):

2024	$	4,795
2025		4,931
2026		5,071
2027		5,215
2028		5,364
Thereafter		17,025
Total future minimum lease payments		42,401
Less: amount representing interest		(12,275	)
Present value of future minimum lease payments	$	30,126

Schedule of Undiscounted Cash Flows Received Under Operating Subleases

The undiscounted cash flows to be received under the operating subleases were as follows (in thousands):

2024	$	4,222
2025		3,135
	$	7,357