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Allowance for Doubtful Accounts - Age Analysis of Past-Due Note Receivable (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Total |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | $ 14,945 | $ 14,467
0-90 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 953 | 1,254
91 - 180 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 5,676 | 4,124
Greater than 181 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 8,316 | 9,089
Standard notes receivable |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 65,407 | 66,418
Standard notes receivable | Total |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 13,165 | 8,507
Standard notes receivable | 0-90 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 953 | 1,001
Standard notes receivable | 91 - 180 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 5,676 | 3,794
Standard notes receivable | Greater than 181 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 6,536 | 3,712
Elevated risk notes receivable |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 1,780 | 5,960
Elevated risk notes receivable | Total |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 1,780 | 5,960
Elevated risk notes receivable | 0-90 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 0 | 253
Elevated risk notes receivable | 91 - 180 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | 0 | 330
Elevated risk notes receivable | Greater than 181 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Notes Receivable | $ 1,780 | $ 5,377

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