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Long-term debt (Tables)

12 Months Ended

Dec. 31, 2019

Borrowings [abstract]

Disclosure of detailed information of long-term debt, activity [Table Text Block]

			2019			2018
			$			$
Balance - January 1			352,769			464,308
	Increase in revolving credit facility		19,772			-
	Decrease in revolving credit facility		(30,000	)		(123,475	)
	Amortization of transaction costs		2,134			2,036
	Accretion expense		4,657			4,456
	Foreign exchange revaluation impact		(290	)		5,444
Balance - December 31			349,042			352,769

Disclosure of detailed information about borrowings [Table Text Block]

	December 31,			December 31,
	2019			2018
	$			$

Convertible debentures⁽ⁱ⁾^,(ii)	350,000			350,000
Revolving credit facility⁽ⁱⁱⁱ⁾	19,482			30,000
Long-term debt	369,482			380,000
Unamortized debt issuance costs	(6,733)			(8,867)
Unamortized accretion on convertible debentures	(13,707)			(18,364)
Long-term debt, net of issuance costs	349,042			352,769
Current portion	-			-
Non-current portion	349,042			352,769
	349,042			352,769