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Contingencies and Commitments (Details)
6 Months Ended
Jun. 30, 2021
USD ($)
Guaranties [Abstract]  
Issued guaranties $ 23,396,000
Settlement Agreement [Member]  
Guaranties [Abstract]  
Payments for legal settlements $ 2,102,000
Maximum [Member]  
Guaranties [Abstract]  
Guarantor obligations, expiration period 3 years
Performance Bonds [Member]  
Guaranties [Abstract]  
Issued guaranties $ 9,518,000
Letters of Credit [Member]  
Guaranties [Abstract]  
Issued guaranties $ 13,878,000