Financial Commitments & Contingencies and Key License Agreements (Tables)

9 Months Ended

Sep. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Summary of Lease Assets and Liabilities

The below table summarizes these lease asset and liability accounts presented on our accompanying Condensed Consolidated Balance Sheets:

Operating Leases	Condensed Consolidated Balance Sheet Caption	September 30, 2020		December 31, 2019
Operating lease right-of-use assets - non-current	Facility and equipment under lease	$	2,662	$	3,806
Operating lease liabilities - current	Accounts payable and other accrued liabilities	1,655		1,683
Operating lease liabilities - non-current	Other long-term liabilities	1,210		2,372
Total operating lease liabilities		$	2,865	$	4,055

Components of Aggregate Lease Expense

The components of our aggregate lease expense is summarized below:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Operating lease cost	$	466	$	351	$	1,398	$	1,202
Variable lease cost	86		108		314		323
Short-term lease cost	17		20		46		59
Total lease cost	$	569	$	479	$	1,758	$	1,584

Weighted Average Remaining Lease Term and Applied Discount Rate

	Weighted Average Remaining Lease Term	Weighted Average Discount Rate
Operating leases as of September 30, 2020	1.8 years	7.8%
Operating leases as of December 31, 2019	2.5 years	7.8%

Future Contractual Lease Payments

The below table summarizes our (i) minimum lease payments over the next five years, (ii) lease arrangement implied interest, and (iii) present value of future lease payments:

Operating Leases - future payments	September 30, 2020
2020 (remaining)	$	489
2021	1,671
2022	827
2023	87
2024	—
Total future lease payments, undiscounted	$	3,074
(Less): Implied interest	(209)
Present value of operating lease payments	$	2,865