Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2018

Supplemental Cash Flow Information [Abstract]

Schedule of Net Changes in Operating Assets and Liabilities

Nine months ended September 30,		2018		2017
Trade and other receivables	$	(159,258)	$	(139,411)
Inventory		(49,140)		(16,460)
Advances against auction contracts		2,434		601
Prepaid expenses and deposits		(5,282)		4,498
Income taxes receivable		10,829		(8,062)
Auction proceeds payable		130,185		186,147
Trade and other payables		15,827		(8,149)
Income taxes payable		6,836		(3,075)
Share unit liabilities		1,204		(5,848)
Other		2,138		1,608
Net changes in operating
assets and liabilities	$	(44,227)	$	11,849

Schedule of Supplemental Cash Flow

Nine months ended September 30,		2018		2017
Interest paid, net of interest capitalized	$	36,278	$	20,233
Interest received		2,009		2,460
Net income taxes paid		7,902		28,037
Non-cash purchase of property, plant
and equipment under capital lease		5,490		6,851

Schedule of Cash, Cash Equivalents and Restricted Cash

		September 30,		December 31,
		2018		2017
Cash and cash equivalents	$	228,764	$	267,910
Restricted cash		75,281		63,206
Cash, cash equivalents, and restricted cash	$	304,045	$	331,116