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Notes Receivable (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Notes receivable | $ 19,760 | $ 24,816
Less current portion | 3,807 | 5,695
Notes receivable - non-current | 15,953 | 19,121
Independent Contractors |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Notes receivable | 10,335 | 15,011
Other Debtors [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Notes receivable | $ 9,425 | $ 9,805

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