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Property, Plant, and Equipment (Details) - USD ($)
3 Months Ended 6 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Jun. 30, 2022
Property plant and equipment          
Gross $ 50,225,000   $ 50,225,000   $ 49,485,000
Less: accumulated depreciation and amortization (42,241,000)   (42,241,000)   (41,546,000)
Net 7,984,000   7,984,000   7,939,000
Depreciation and amortization 379,000 $ 348,000 747,000 $ 690,000  
Land          
Property plant and equipment          
Gross 904,000   904,000   904,000
Buildings [Member]          
Property plant and equipment          
Gross 8,911,000   $ 8,911,000   8,911,000
Buildings [Member] | Minimum          
Property plant and equipment          
Useful life     30 years    
Buildings [Member] | Maximum          
Property plant and equipment          
Useful life     40 years    
Molds and dies          
Property plant and equipment          
Gross 7,502,000   $ 7,502,000   7,480,000
Molds and dies | Minimum          
Property plant and equipment          
Useful life     3 years    
Molds and dies | Maximum          
Property plant and equipment          
Useful life     5 years    
Furniture and fixtures          
Property plant and equipment          
Gross 3,137,000   $ 3,137,000   3,030,000
Furniture and fixtures | Minimum          
Property plant and equipment          
Useful life     5 years    
Furniture and fixtures | Maximum          
Property plant and equipment          
Useful life     10 years    
Machinery and equipment          
Property plant and equipment          
Gross 27,029,000   $ 27,029,000   26,696,000
Machinery and equipment | Minimum          
Property plant and equipment          
Useful life     3 years    
Machinery and equipment | Maximum          
Property plant and equipment          
Useful life     10 years    
Building improvements          
Property plant and equipment          
Gross $ 2,742,000   $ 2,742,000   $ 2,464,000
Useful life (estimated)     Shorter of the lease term or life of asset