Debt (Tables)

6 Months Ended

Jun. 30, 2017

Debt [Abstract]

Schedule of Debt

			Carrying amount
			June 30,		December 31,
				2017		2016
Short-term debt			$	14,110	$	23,912
Long-term debt:
	Revolving loans:
		Denominated in Canadian dollars, unsecured, bearing interest at a weighted
		average rate of 2.380%, due in monthly installments of interest only, with the
		committed, revolving credit facility available until October 2021		-		69,926
		Denominated in United States dollars, unsecured, bearing interest at a weighted
		average rate of 2.075%, due in monthly installments of interest only, with the
		committed, revolving credit facility available until October 2021		-		30,000
	Delayed draw term loan:
		Denominated in Canadian dollars, secured, bearing interest at a weighted
		average rate of 2.350%, due in monthly installments of interest only and
		quarterly installments of principal, with the committed credit facility,				-
		available until October 2021		184,113
		Denominated in United States dollars, secured, bearing interest at a weighted
		average rate of 2.551%, due in monthly installments of interest only and
		quarterly installments of principal, with the committed credit facility,
		available until October 2021		148,250
		Less: unamortized debt issue costs		(4,545)
	Senior unsecured notes:
		Bearing interest at 5.375% due in semi-annual installments, with the full
		amount of principal due in January 2025		500,000		500,000
		Less: unamortized debt issue costs		(13,505)		(4,220)
				814,313		595,706
Total debt			$	828,423	$	619,618
Long-term debt:
Current portion			$	16,618	$	-
Non-current portion				797,695		595,706
			$	814,313	$	595,706