Segmented Information (Tables)

12 Months Ended

Dec. 31, 2017

Segmented Information [Abstract]

Schedule of Revenue and (Loss) Income Before Taxes by Segment

		Year ended December 31, 2017
	A&M		Other		Consolidated
Revenues	$	564,298	$	46,219	$	610,517
Costs of services, excluding D&A		(75,685)		(3,328)		(79,013)
SG&A expenses		(308,874)		(14,396)		(323,270)
Impairment loss		(8,911)		-		(8,911)
Segment profit	$	170,828	$	28,495	$	199,323
Acquisition-related costs						(38,272)
D&A expenses						(52,694)
Gain on disposition of Property, plant
and equipment ("PPE")						1,656
Foreign exchange loss						(2,559)
Operating income					$	107,454
Other expense, net						(30,060)
Income tax expense						(2,088)
Net income					$	75,306

		Year ended December 31, 2016
	A&M		Other		Consolidated
Revenues	$	531,826	$	34,569	$	566,395
Costs of services, excluding D&A		(65,248)		(814)		(66,062)
SG&A expenses		(272,317)		(11,212)		(283,529)
Impairment loss		(28,243)		-		(28,243)
Segment profit	$	166,018	$	22,543	$	188,561
Acquisition-related costs						(11,829)
D&A expenses						(40,861)
Gain on disposition of PPE						1,282
Foreign exchange loss						(1,431)
Operating income					$	135,722
Other expense, net						(5,228)
Income tax expense						(36,982)
Net income					$	93,512

4.  Segmented information (continued)

		Year ended December 31, 2015
	A&M		Other		Consolidated
Revenues	$	505,865	$	10,010	$	515,875
Costs of services, excluding  D&A		(56,026)		-		(56,026)
SG&A expenses		(249,852)		(4,537)		(254,389)
Segment profit	$	199,987	$	5,473	$	205,460
Acquisition-related costs						(601)
D&A expenses						(42,032)
Gain on disposition of PPE						9,691
Foreign exchange gain						2,322
Operating income					$	174,840
Other income, net						1,596
Income tax expense						(37,861)
Net income					$	138,575

Reclassification of Selling, General and Administrative Expenses

		At September 30,		At June 30,		At March 31,		December 31,
		2017		2017		2017		2016
A&M SG&A expenses:
As reported	$	81,964	$	71,199	$	67,392	$	273,179
Current presentation		81,736		70,977		67,111		272,317
Other SG&A expenses:
As reported	$	3,371	$	3,178	$	3,183	$	10,350
Current presentation		3,599		3,400		3,464		11,212

Schedule of Carrying Value Goodwill

As at December 31,		2017		2016
A&M	$	649,770	$	78,934
Other		21,152		18,603
	$	670,922	$	97,537

Geographic Information of Revenue

		United States		Canada		Europe		Other		Consolidated
Revenues for the year ended:
December 31, 2017	$	325,244	$	168,928	$	68,408	$	47,937	$	610,517
December 31, 2016		278,198		187,699		52,809		47,689		566,395
December 31, 2015		257,824		166,528		48,419		43,104		515,875

Geographic Information of Long-lived Assets

		United States		Canada		Europe		Other		Consolidated
Long-lived assets:
December 31, 2017	$	275,628	$	116,833	$	82,795	$	51,325	$	526,581
December 31, 2016		282,103		108,693		74,491		49,743		515,030