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Leases, Codification Topic 842 (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Leases [Abstract]      
Other Long-term Investments $ 241,000 $ 3,027,000  
Lessee, Operating Lease, Liability, Payments, Due 1,842,000    
Lessee, Operating Lease, Liability, Payments, Due Year Two 1,930,000    
Lessee, Operating Lease, Liability, Payments, Due Year Three 707,000    
Lessee, Operating Lease, Liability, Payments, Due Year Four 383,000    
Lessee, Operating Lease, Liability, Payments, Due Year Five 389,000    
Lessee, Operating Lease, Liability, Payments, Due after Year Five 288,000    
Operating Lease, Payments 1,774,000 1,762,000 $ 1,990,000
Lessee, Operating Lease, Liability, Undiscounted Excess Amount (987,000)    
Operating Lease, Liability 4,552,000 6,065,000  
Operating Lease, Cost 1,512,000 1,682,000 1,655,000
Sublease Income 862,000 771,000 602,000
Operating Lease, Right-of-Use Asset 3,673,000 4,976,000  
Operating Lease, Liability, Current 1,286,000 1,502,000  
Operating Lease, Liability, Noncurrent $ 3,266,000 $ 4,563,000  
Operating Lease, Weighted Average Remaining Lease Term 3 years 3 months 18 days 4 years 1 month 6 days  
Operating Lease, Weighted Average Discount Rate, Percent 5.70% 5.60%  
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 173,000 $ 1,217,000 $ 0
Operating Lease, Lease Income, Lease Payments $ 5,539,000    
Lessee, Operating Lease, Discount Rate 7.00%