Operating Expenses

3 Months Ended

Mar. 31, 2018

Operating Expenses [Abstract]

Operating Expenses

6.Operating expenses

Costs of services

Three months ended March 31,		2018		2017
Ancillary and logistical service expenses	$	14,580	$	11,527
Employee compensation expenses		9,019		5,476
Buildings, facilities and technology expenses		2,627		1,546
Travel, advertising and promotion expenses		6,808		4,656
Other costs of services		3,623		1,135
	$	36,657	$	24,340

SG&A expenses

Three months ended March 31,		2018		2017
Employee compensation expenses	$	63,293	$	44,455
Buildings, facilities and technology expenses		15,273		12,270
Travel, advertising and promotion expenses		9,719		6,586
Professional fees		4,267		3,100
Other SG&A expenses		4,918		4,164
	$	97,470	$	70,575

Acquisition-related costs

Three months ended March 31,		2018		2017
IronPlanet: (note 19)	$	639	$	7,691
Other acquisitions:
Continuing employment costs		968		864
Other acquisition-related costs		26		72
	$	1,633	$	8,627

Depreciation and amortization expenses

Three months ended March 31,		2018		2017
Depreciation expense	$	6,916	$	6,792
Amortization expense		9,275		3,546
	$	16,191	$	10,338