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Long-Term Debt Long-Term Debt (Senior long-term debt) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
May 13, 2021
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]      
Accumulated Amortization, Debt Issuance Costs $ 1,324   $ 819
Debt Issuance Costs, Net 1,543   1,136
Less: current portion (521)   (1,027)
Total acquisition debt, net of current portion $ 3,979   4,482
Debt Instrument, Debt Compliance, EBITDA 0.50    
Ratio Actual [Member]      
Debt Instrument [Line Items]      
Ratio of indebtedness to net capital (in ratio) 5.00    
Ratio Actual [Member] | Minimum      
Debt Instrument [Line Items]      
Ratio of indebtedness to net capital (in ratio) 0.25    
Notes payable, other | Acquisition Debt      
Debt Instrument [Line Items]      
Principal amount $ 4,500   5,509
Credit Agreement [Member]      
Debt Instrument [Line Items]      
Principal amount 155,400    
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 0    
Less: Interest 0    
Present value of Credit Facility and acquisition debt 155,400    
Credit Agreement [Member] | Term Loan [Member]      
Debt Instrument [Line Items]      
Principal amount 153,857   46,064
Acquisition Debt      
Debt Instrument [Line Items]      
Principal amount 6,526    
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 825    
Less: Interest 2,026    
Present value of Credit Facility and acquisition debt 4,500    
Revolving Credit Facility | Line of Credit | Revolving Credit Facility, Secured, Floating Rate      
Debt Instrument [Line Items]      
Principal amount 155,400   $ 47,200
Line of Credit Facility, Remaining Borrowing Capacity $ 42,300 $ 21,400