Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments and Fair Value Measurement (Narrative) (Details)

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Financial Instruments and Fair Value Measurement (Narrative) (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Jun. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Fixed assets impairments $ 3,100,000     $ 3,100,000 $ 17,649,000 $ 17,900,000
Proceeds from Sale of Buildings   $ 17,250,000        
Fixed assets held for sale 13,024,000   $ 16,124,000 13,024,000   16,124,000
Discontinued Operations            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Fixed assets impairments 3,100,000         17,900,000
Buildings and improvements [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Estimated fair values 12,964,000     12,964,000    
Fixed assets impairments     300,000      
Fixed assets held for sale     $ 16,100,000     $ 16,100,000
Fair Value, Nonrecurring [Member] | Buildings and improvements [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Estimated fair values 16,350,000     16,350,000    
Fixed assets impairments       6,300,000    
Fair Value, Nonrecurring [Member] | Machinery and equipment [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Estimated fair values $ 2,100,000     2,100,000    
Fixed assets impairments       $ 11,300,000