Allowance for Doubtful Accounts - Schedule of Changes in Allowance for Notes Receivable (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounts Receivables
Accounts receivable, Allowance for doubtful accounts, beginning balance	$ 50,794,000	$ 51,052,000
Write-Offs	(5,343,000)	(7,305,000)
Bad Debt Expense	3,960,000	2,779,000
Accounts receivable, Allowance for doubtful accounts, ending balance	49,411,000	46,526,000
Notes Receivables
Notes receivable, Allowance for doubtful accounts, beginning balance	14,790,000	16,749,000
Write-Offs	0	(2,809,000)
Bad Debt Expense	(1,109,000)	636,000
Notes receivable, Allowance for doubtful accounts, ending balance	13,681,000	14,576,000
Accounts and Financing Receivable
Allowance for doubtful accounts, beginning balance	65,584,000	67,801,000
Write-Offs	(5,343,000)	(10,114,000)
Bad Debt Expense	2,851,000	3,415,000
Allowance for doubtful accounts, ending balance	63,092,000	61,102,000
Accounts receivable recovered after write off	200,000	0
Standard notes receivable
Notes Receivables
Notes receivable, Allowance for doubtful accounts, beginning balance	13,607,000	13,258,000
Write-Offs	0	(9,000)
Bad Debt Expense	(1,065,000)	(256,000)
Notes receivable, Allowance for doubtful accounts, ending balance	12,542,000	12,993,000
Elevated risk notes receivable
Notes Receivables
Notes receivable, Allowance for doubtful accounts, beginning balance	1,183,000	3,491,000
Write-Offs	0	(2,800,000)
Bad Debt Expense	(44,000)	892,000
Notes receivable, Allowance for doubtful accounts, ending balance	$ 1,139,000	$ 1,583,000