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Long-Term Debt (Narrative) (Details) - Credit Agreement [Member] - USD ($)
9 Months Ended
Jul. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Debt Instrument [Line Items]        
Line of credit outstanding amount   $ 375,500,000    
Capital One, National Association [Member]        
Debt Instrument [Line Items]        
Maximum aggregate loan amount available   200,500,000    
Debt instrument, maturity date Jul. 30, 2026      
Debt instrument total net leverage ratio 4.25%      
Line of credit outstanding amount   8,100,000    
Capital One, National Association [Member] | Term Loan [Member]        
Debt Instrument [Line Items]        
Line of credit outstanding amount   $ 166,900,000    
Debt instrument stated interest rate   5.11%    
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] | London Interbank Offered Rate (LIBOR) [Member]        
Debt Instrument [Line Items]        
Debt instrument variable interest rate margin 1.00%      
Capital One, National Association [Member] | London Interbank Offered Rate (LIBOR) [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 $ 600,000,000.0      
Proceeds from line of credit     $ 29,000,000.0  
Line of credit outstanding amount   $ 166,900,000   $ 224,900,000
Debt instrument stated interest rate   5.11%   2.10%
Revolving Credit Loan [Member] | Capital One, National Association [Member] | JourneyCare and Apple Home [Member]        
Debt Instrument [Line Items]        
Proceeds from line of credit   $ 47,000,000.0    
Repayments of line of credit   $ 105,000,000.0    
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] | Capital One, National Association [Member]        
Debt Instrument [Line Items]        
Maximum aggregate loan amount available $ 125,000,000.0