Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Of Financial Instruments [Abstract]

Summary of Allowance for Doubtful Accounts

The movement in the allowance for doubtful accounts during the year was as follows:

	2017			2016
Balance at January 1	$	6,072		$	9,089
Impairment loss recognized		56			188
Amounts written-off as uncollectible		(3,296	)		(218	)
Impairment loss reversed		(30	)		(2,786	)
Effect of movement in exchange rates		(206	)		(201	)
Balance at December 31	$	2,596		$	6,072

Summary of Ageing of Trade Receivables

The ageing of trade receivables at December 31 was as follows:

	2017				2016
	Gross		Provision for Impairment		Gross		Provision for Impairment
Not past due	$	92,880	$	—	$	94,988	$	—
Past due 0 – 30 days		66,723		—		38,130		—
Past due 31 – 120 days		19,410		580		14,921		—
Past due more than 120 days		2,016		2,016		8,175		6,072
	$	181,029	$	2,596	$	156,214	$	6,072

Summary of Financial Instruments were Denominated in U S Dollars

The following financial instruments were denominated in U.S. dollars:

	2017						2016
	Canadian Operations ⁽¹⁾			Foreign Operations			Canadian Operations ⁽¹⁾			Foreign. Operations
Cash	$	1,720		$	39,636		$	37,583		$	45,800
Accounts receivable		—			152,216			—			144,302
Accounts payable and accrued liabilities		(13,221	)		(98,008	)		(20,054	)		(106,635	)
Long-term liabilities, excluding long-term incentive plans		—			(8,023	)		—			(9,251	)
Net foreign currency exposure	$	(11,501	)	$	85,821		$	17,529		$	74,216
Impact of $0.01 change in the U.S. dollar to Canadian dollar exchange rate on net loss	$	(115	)	$	—		$	175		$	—
Impact of $0.01 change in the U.S. dollar to Canadian dollar exchange rate on comprehensive loss	$	—		$	858		$	—		$	742

(1) Excludes U.S. dollar long-term debt that has been designated as a hedge of the Corporation’s net investment in certain self-sustaining foreign operations.

Summary of Contractual Maturities of Financial Liabilities and other contractual commitments

The following are the contractual maturities of the Corporation’s financial liabilities and other contractual commitments as at December 31, 2017:

	2018		2019		2020		2021		2022		Thereafter		Total
Accounts payable and accrued liabilities	$	209,625	$	—	$	—	$	—	$	—	$	—	$	209,625
Share based compensation		8,658		14,057		4,943		—		—		—		27,658
Long-term debt		—		—		—		312,601		—		1,445,918		1,758,519
Interest on long-term debt (1)		116,661		116,661		116,661		115,815		96,342		191,185		753,325
Commitments		17,435		45,077		80,019		24,664		5,398		21,909		194,502
Total	$	352,379	$	175,795	$	201,623	$	453,080	$	101,740	$	1,659,012	$	2,943,629

(1) Interest has been calculated based on debt balances, interest rates, and foreign exchange rates in effect as at December 31, 2017 and excludes amortization of long-term debt issue costs.