Property, Plant and Equipment - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Property, Plant and Equipment
Depreciation and amortization expense	$ 271,000	$ 248,000
Amortization expense	6,000	$ 8,000
Property, plant and equipment, Gross	24,208,000		$ 24,056,000
Machinery and equipment
Property, Plant and Equipment
ROU assets	154,000		160,000
Property, plant and equipment, Gross	15,544,000		15,503,000
Construction in progress
Property, Plant and Equipment
Property, plant and equipment, Gross	162,000		$ 106,000
Construction in progress (CIP) machinery & equipment
Property, Plant and Equipment
Property, plant and equipment, Gross	123,000
Construction in progress (CIP) building improvements
Property, Plant and Equipment
Property, plant and equipment, Gross	$ 39,000