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Fair Value Measurements Fair Value Measurements (Narrative) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Senior Notes [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value $ 401,600  
Notes payable, other | Acquisition Debt    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Principal amount 4,500 $ 5,509
Line of Credit | Revolving Credit Facility, Secured, Floating Rate | Revolving Credit Facility    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Principal amount $ 155,400 $ 47,200