Property and Equipment, Net (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 47,063,000	$ 46,048,000
Less: accumulated depreciation and amortization	(42,884,000)	(41,963,000)
Total property and equipment, net	4,179,000	4,085,000
Depreciation and amortization	1,153,000	2,270,000
Impairment, long-lived asset	$ 216,000	0
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]	Manufacture and supply
Machinery
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 20,248,000	19,810,000
Machinery | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Machinery | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	15 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 769,000	769,000
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	15 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 21,386,000	21,375,000
Computer, network equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,627,000	2,627,000
Computer, network equipment and software | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Computer, network equipment and software | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	7 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,033,000	$ 1,467,000