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Accrued Expenses and Other Liabilities - Other liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Other liabilities    
Accrued and deferred deposit payments   $ 3.6
Other Assets    
Other liabilities    
Deferred compensation plan assets   2.4
Accrued Expenses and Other Current Liabilities    
Other liabilities    
Accrued and deferred deposit payments   1.8
Deferred payroll taxes $ 1.7  
Other Liabilities    
Other liabilities    
Deferred compensation plan liabilities   2.5
Asset retirement obligations 2.8 2.7
Income taxes payable 0.4 1.4
Medical and dental benefits $ 1.8 1.9
Accrued and deferred deposit payments   $ 1.8