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Long-Term Debt (Narrative) (Details) - Credit Agreement [Member] - USD ($)
6 Months Ended
Apr. 26, 2023
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Jun. 30, 2021
Debt Instrument [Line Items]          
Line of credit outstanding amount   $ 409,300,000      
Capital One, National Association [Member]          
Debt Instrument [Line Items]          
Maximum aggregate loan amount available   319,900,000      
Debt instrument, maturity date Jul. 30, 2026        
Debt instrument variable interest rate margin 1.00%        
Debt instrument total net leverage ratio 4.25%        
Line of credit outstanding amount   8,000,000.0      
Capital One, National Association [Member] | Term Loan [Member]          
Debt Instrument [Line Items]          
Line of credit outstanding amount   $ 81,400,000      
Debt instrument stated interest rate   6.95%      
Capital One, National Association [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Debt instrument total net leverage ratio 3.75%        
Capital One, National Association [Member] | Federal Funds Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument variable interest rate margin 0.50%        
Capital One, National Association [Member] | SOFR [Member]          
Debt Instrument [Line Items]          
Debt instrument variable interest rate margin 0.10%        
Capital One, National Association [Member] | SOFR [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Debt instrument variable interest rate margin 0.00%        
Capital One, National Association [Member] | One-Month SOFR [Member]          
Debt Instrument [Line Items]          
Debt instrument variable interest rate margin 0.10%        
Capital One, National Association [Member] | One-Month SOFR [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Debt instrument variable interest rate margin 0.00%        
Capital One, National Association [Member] | Based On Applicable Senior Leverage Ratio [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Debt instrument variable interest rate margin 0.75%        
Capital One, National Association [Member] | Based On Applicable Senior Leverage Ratio [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Debt instrument variable interest rate margin 1.50%        
Capital One, National Association [Member] | Based On Applicable Leverage Ratio [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Debt instrument variable interest rate margin 1.75%        
Capital One, National Association [Member] | Based On Applicable Leverage Ratio [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Debt instrument variable interest rate margin 2.50%        
Capital One, National Association [Member] | Restriction on Dividends [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Aggregate amount of dividends and distributions   $ 7,500,000      
Revolving Credit Loan [Member] | Capital One, National Association [Member]          
Debt Instrument [Line Items]          
Maximum aggregate loan amount available         $ 600,000,000
Line of credit outstanding amount   $ 81,400,000   $ 134,900,000  
Debt instrument stated interest rate   6.95%   6.13%  
Revolving Credit Loan [Member] | Capital One, National Association [Member] | JourneyCare and Apple Home [Member]          
Debt Instrument [Line Items]          
Proceeds from line of credit     $ 35,000,000    
Repayments of line of credit   $ 53,500,000 $ 60,000,000    
Revolving Credit Loan [Member] | Capital One, National Association [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Fee charged on unused portion of revolving credit facility   0.20%      
Revolving Credit Loan [Member] | Capital One, National Association [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Fee charged on unused portion of revolving credit facility   0.35%      
Incremental Loan Facility [Member]          
Debt Instrument [Line Items]          
Maximum aggregate loan amount available   $ 125,000,000