Debt and lease liabilities (Financial Covenant) (Details) - Notes Payable	Sep. 30, 2020
Line of Credit Facility [Line Items]
Total Debt to Adjusted EBITDA (Quarterly)	0.35
Fixed Charge Coverage Ratio (Quarterly)	2.75
Loan-to-Value Ratio (Quarterly)	0.71

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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