Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Taxes [Abstract]

Schedule of Effective Income Tax Rate Reconciliation

Year ended December 31,		2018		2017		2016
Income before income taxes	$	152,512	$	77,394	$	130,494
Statutory federal and provincial tax
rate in Canada		27.00%		26.00%		26.00%
Expected income tax expense	$	41,178	$	20,122	$	33,928
Non-deductible expenses		4,810		5,668		3,891
Adjustment to prior year provision to statutory
tax returns		1,323		(528)		(824)
Changes in the valuation of deferred tax assets		(771)		(1,089)		(259)
Different tax rates of subsidiaries
operating in foreign jurisdictions		(17,145)		(12,269)		(3,786)
U.S. tax reform impacts		4,899		(9,734)		-
Impairment of goodwill		-		-		6,129
Change in estimate of deductibility
of stock options		-		(1,557)		-
Unrecognized tax benefits		(1,800)		3,291		799
Benefits of deductible stock options vested
and exercised		(2,434)		(1,359)		(1,042)
Deductions for tax purposes in excess of
accounting expenses		(383)		(380)		(490)
Other		1,329		(77)		(1,364)
	$	31,006	$	2,088	$	36,982

Summary of Income Tax Expense (Recovery)

Year ended December 31,		2018			2017		2016
Canadian:
Current tax expense	$	13,209	30,525	$	14,245	$	30,525
Deferred tax expense (recovery)		3,958			(10,192)		(2,068)
Foreign:
Current tax expense before application
of operating loss carryforwards		19,851			8,987		12,126
Tax benefit of operating loss carryforwards		(8,293)			(3,876)		(2,310)
Total foreign current tax expense		11,558			5,111		9,816
Deferred tax expense before adjustment
to opening valuation allowance		2,386			(6,317)		(1,291)
Adjustment to opening valuation allowance		(105)			(759)		-
Total foreign deferred tax expense (recovery)		2,281			(7,076)		(1,291)
	$	31,006		$	2,088	$	36,982

Schedule of Deferred Tax Assets and Liabilities

As at December 31,		2018		2017
Deferred tax assets:
Working capital	$	4,703	$	9,583
Property, plant and equipment		6,385		6,495
Goodwill		-		1,016
Share-based compensation		4,923		5,733
Tax losses and tax credit carryforwards		48,881		52,251
Other		14,844		7,635
		79,736		82,713
Deferred tax liabilities:
Property, plant and equipment	$	(10,918)	$	(9,779)
Goodwill		(8,390)		(9,202)
Intangible assets		(54,810)		(54,401)
Other		(12,051)		(8,628)
		(86,169)		(82,010)
Net deferred tax assets (liabilities)	$	(6,433)	$	703
Valuation allowance		(13,438)		(14,363)
	$	(19,871)	$	(13,660)

Schedule of Non-capital Loss Carryforwards

2019	$	106
2020		4,232
2021		5,017
2022		3,543
2023 and thereafter		154,593
	$	167,491

Schedule of Unrecognized Tax Benefits

As at December 31,		2018		2017
Unrecognized tax benefits, beginning of year	$	25,910	$	19,262
Increases - tax positions taken in prior period		725		4,426
Decreases - tax positions taken in prior period		(107)		(124)
Increases - tax positions taken in current period		2,644		2,346
Settlement and lapse of statute of limitations		(4,944)		-
Currency translation adjustment		(1,644)		-
Unrecognized tax benefits, end of year	$	22,584	$	25,910