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Accounts receivable	6 Months Ended
Accounts receivable	Jun. 30, 2020
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Accounts receivable	Accounts receivable Accounts receivable as of June 30, 2020 include unbilled revenue of $48,680 (December 31, 2019 - $80,295) from the Company’s regulated utilities. Accounts receivable as of June 30, 2020 are presented net of allowance for doubtful accounts of $10,555 (December 31, 2019 - $4,939).