Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Jul. 31, 2021	May 31, 2021	May 31, 2020	May 31, 2019
Leases [Abstract]
Operating lease right-of-use assets, net	$ 291,000	$ 1,165,000	$ 44,000,000	$ 1,200,000	$ 172,000
Short-term operating lease liability	$ 377,000	$ 741,000
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities
Long-term operating lease liabilities	$ 0	$ 420,000
Operating lease liability	377,000	1,161,000			172,000	$ 0
Finance lease right of use asset	124,000	557,000
Finance lease accumulated amortization	(50,000)	$ (557,000)
Total finance lease right of use asset, net	$ 74,000
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant and Equipment, Net	Other Assets, Noncurrent
Weighted average remaining lease term
Operating leases	10 months 24 days	1 year 7 months 6 days
Finance leases	1 year
Weighted average discount rate
Operating leases	5.71%	1.87%
Finance leases	4.45%
2023	$ 388,000
2024	0
Total lease payments	388,000
Less: imputed interest	(11,000)
Operating lease liability	$ 377,000	$ 1,161,000			$ 172,000	$ 0