Receivables and Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Receivables [Line Items]
Proceeds from Interest Received	$ 12,200	$ 11,500	$ 10,800
Accounts Receivable, before Allowance for Credit Loss	134,857	98,050
Accounts Receivable, after Allowance for Credit Loss	126,378	90,003
Changes in allowance for doubtful accounts [Roll Forward]
Bad debt expense	14,397	14,635	15,077
Accounts written off	(13,965)	(12,190)	(14,359)
Allowance for doubtful accounts	(8,479)	(8,047)	$ (5,601)	$ (4,883)
Installment sales receivable
Receivables [Line Items]
Accounts Receivable, before Allowance for Credit Loss	66,276	61,794
Changes in allowance for doubtful accounts [Roll Forward]
Allowance for doubtful accounts	(7,600)	(7,000)
Trade and notes receivables
Receivables [Line Items]
Accounts Receivable, before Allowance for Credit Loss	68,581	36,256
Changes in allowance for doubtful accounts [Roll Forward]
Allowance for doubtful accounts	$ (900)	$ (1,000)