Receivables and Allowance for Doubtful Accounts (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Receivables [Line Items]
Interest paid on installment agreements	$ 3,000,000	$ 3,100,000
Gross receivables	114,709,000		$ 125,079,000
Total receivables, net of allowance for doubtful accounts	101,772,000		111,865,000
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Less allowance for doubtful accounts	(12,937,000)		(13,214,000)
Bad debt expense	5,861,000
Accounts written off, net of recoveries	(6,138,000)
Installment sales receivable [Member]
Receivables [Line Items]
Gross receivables	67,035,000		69,550,000
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Less allowance for doubtful accounts	(12,000,000)		(12,000,000)
Trade and notes receivables [Member]
Receivables [Line Items]
Gross receivables	47,674,000		55,529,000
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Less allowance for doubtful accounts	(900,000)		(1,200,000)
Notes Receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accrued Revenue	$ 21,900,000		$ 28,700,000