Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2021

Commitments And Contingencies Disclosure [Abstract]

Summary of Lease Liabilities and Right-of-Use Assets

The table below summarizes the Company’s lease liabilities and corresponding right-of-use assets (in thousands, except years and rates):

		2021			2020
Assets
Operating	$	341		$	636
Financing		—			7
Total leased assets	$	341		$	643

Liabilities
Current:
Operating	$	111		$	123
Financing	—			10
Noncurrent:
Operating	269			528
Total lease liabilities	$	380		$	661

Weighted-average remaining lease term (years) - operating leases	2.86			6.57
Weighted-average remaining lease term (years) - finance leases	—			0.42
Weighted-average discount rate - operating leases		9.00	%		7.79	%
Weighted-average discount rate - finance leases		N/A			5.00	%

Summary of Lease Costs

The table below summarizes the Company’s lease costs from its consolidated statements of operations, and cash payments from its consolidated statements of cash flows.

	Year Ended December 31,
		2021		2020
Lease expense:
Operating lease expense	$	211	$	210
Finance lease expense:
Depreciation of right-of-use assets		7	127
Interest expense on lease liabilities	—		4
Total lease expense	$	218	$	341

Cash payment information:
Operating cash used for operating leases	$	206	$	204
Financing cash used for financing leases	8		117
Total cash paid for amounts included in the measurement of lease liabilities	$	214	$	321

Summary of Future Minimum Annual Lease Payments under Operating and Financing Leases

The Company’s future minimum annual lease payments under operating and financing leases at December 31, 2021 are as follows (in thousands):


		Operating Leases
2022	$	159
2023		137
2024		113
2025		18
Thereafter			—
Total minimum lease payments	$		427
Less: amount representing interest			(47	)
Present value of obligations under leases			380
Less: current portion			(111	)
Noncurrent lease obligations	$		269