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Share Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of terms and conditions of share-based payment arrangement [Line Items]

Disclosure of Liability Classified Plans

Liability Classified Plans

		Restricted Share Units			Performance Share Units			Share Appreciation Rights			Non- Management Directors’ DSUs			Total
Balance, December 31, 2015		$	10,459		$	19,624		$	6		$	2,383		$	32,472
Expensed (recovered) during the period			10,888			18,920			(3	)		2,219			32,024
Payments			(5,755	)		(9,499	)		—			—			(15,254	)
Balance, December 31, 2016			15,592			29,045			3			4,602			49,242
Expensed (recovered) during the period			2,115			(4,188	)		(3	)		(1,090	)		(3,166	)
Payments			(10,757	)		(13,450	)		—			—			(24,207	)
Balance, December 31, 2017		$	6,950		$	11,407		$	—		$	3,512		$	21,869
Current		$	4,719		$	3,614		$	—		$	—		$	8,333
Long-term			2,231			7,793			—			3,512			13,536
		$	6,950		$	11,407		$	—		$	3,512		$	21,869

Summary of Shares Outstanding Under Share Based Incentive Plans

A summary of the RSUs and PSUs outstanding under these share based incentive plans is presented below:

		RSUs Outstanding				PSUs Outstanding
December 31, 2015			2,896,818				4,898,455
Granted			1,911,200				3,443,600
Redeemed			(1,311,580	)			(1,136,720	)
Forfeitures			(367,399	)			(711,537	)
December 31, 2016			3,129,039				6,493,798
Granted			1,343,669				828,400
Redeemed			(1,404,271	)			(1,325,692	)
Forfeitures			(271,579	)			(270,247	)
December 31, 2017			2,796,858				5,726,259

Summary of Status of Equity Incentive Plan

A summary of the status of the equity incentive plan is presented below:

Canadian Share Options		Options Outstanding				Range of Exercise Prices		Weighted Average Exercise Price				Options Exercisable
December 31, 2015			6,168,596			$   5.22 – 14.50		$	8.93				3,870,673
Granted			615,200			4.46  –  4.46			4.46
Exercised			(295,768	)		5.22  –  5.85			5.85
Forfeitures			(299,356	)		5.85 – 11.16			7.57
December 31, 2016			6,188,672			4.46 – 14.50			8.70				4,369,155
Granted			377,100			7.30  –  7.30			7.30
Forfeitures			(1,665,412	)		7.32 – 14.50			8.98
December 31, 2017			4,900,360			$   4.46 – 14.50		$	8.50				3,734,019

U.S. Share Options		Options Outstanding				Range of Exercise Prices (US$)		Weighted Average Exercise Price (US$)				Options Exercisable
December 31, 2015			4,582,237			$   4.95 – 15.21		$	8.30				2,468,185
Granted			2,130,700			3.21 –   5.02			3.30
Exercised			(31,000	)		4.95 –   4.95			4.95
Forfeitures			(1,344,867	)		3.21 – 10.74			6.86
December 31, 2016			5,337,070			3.21 – 15.21			6.69				2,626,326
Granted			1,165,900			3.99 –   5.57			5.56
Forfeitures			(944,349	)		5.79 – 10.96			8.42
December 31, 2017			5,558,621			$   3.21 – 15.21		$	6.16				2,891,808

Range of Exercise Prices for Options Outstanding

Canadian Share Options		Total Options Outstanding												Options Exercisable
Range of Exercise Prices:		Number				Weighted Average Exercise Price				Weighted Average Remaining Contractual Life (Years)				Number				Weighted Average Exercise Price
$  4.46 –   7.99			2,153,234			$	6.50				4.74				986,893			$	6.73
8.00 –   9.99			830,017				9.02				2.11				830,017				9.02
10.00 –  14.50			1,917,109				10.51				1.45				1,917,109				10.51
$  4.46 –  14.50			4,900,360			$	8.50				3.01				3,734,019			$	9.18

U.S. Share Options		Total Options Outstanding												Options Exercisable
Range of Exercise Prices (US$):		Number				Weighted Average Exercise Price (US$)				Weighted Average Remaining Contractual Life (Years)				Number				Weighted Average Exercise Price (US$)
$  3.21  –  4.99			1,731,100			$	3.23				5.16				572,460			$	3.23
5.00  –  7.99			2,127,900				5.64				5.26				619,727				5.76
8.00  –  15.21			1,699,621				9.79				1.82				1,699,621				9.79
$  3.21  –  15.21			5,558,621			$	6.16				4.18				2,891,808			$	7.63

Share Appreciation Rights [Member]

Disclosure of terms and conditions of share-based payment arrangement [Line Items]

Summary of Shares Outstanding Under Share Based Incentive Plans

Share Appreciation Rights		Outstanding				Range of Exercise Price (US$)		Weighted Average Exercise Price (US$)				Exercisable
December 31, 2015			343,132			$   15.22 – 17.38		$	15.93				343,132
Forfeited			(89,756	)		15.22 – 13.26			17.22
December 31, 2016			253,376			15.22 – 15.79			15.47				253,376
Forfeited			(117,207	)		15.22 – 17.38			15.75
December 31, 2017			136,169			$   15.22 – 15.22		$	15.22				136,169

		Total SARs Outstanding and Exercisable
Range of Exercise Prices (US$):		Number				Weighted Average Exercise Price (US$)				Weighted Average Remaining Contractual Life (Years)
$    15.22 – 15.79			136,169			$	15.22				0.16

Deferred Share Units (DSUs) [Member]

Disclosure of terms and conditions of share-based payment arrangement [Line Items]

Summary of Shares Outstanding Under Share Based Incentive Plans

A summary of the DSUs outstanding under this share based incentive plan is presented below:

Deferred Share Units		Outstanding
Balance December 31, 2015			428,028
Granted			193,793
Balance December 31, 2016			621,821
Granted			331,456
Balance December 31, 2017			953,277

Deferred Share Units (DSUs) [Member] | Equity-Settled Plans [Member]

Disclosure of terms and conditions of share-based payment arrangement [Line Items]

Summary of Shares Outstanding Under Share Based Incentive Plans

A summary of this share based incentive plan is presented below:

Deferred Share Units		Outstanding
December 31, 2016 and 2017			195,743

Executive Performance Share Units [Member]

Disclosure of terms and conditions of share-based payment arrangement [Line Items]

Summary of Shares Outstanding Under Share Based Incentive Plans

. A summary of the activity under this share based incentive plan is presented below:

		Outstanding				Weighted Fair Value
December 31, 2016			—			$	—
Granted			1,159,000				6.00
December 31, 2017			1,159,000			$	6.00

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The disclosure of the number and weighted average exercise prices of other equity instruments (ie other than share options).

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