Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2017

Supplemental Cash Flow Information [Abstract]

Schedule of Net Changes in Operating Assets and Liabilities

Six months ended June 30,		2017		2016
Trade and other receivables		(65,529)		(68,680)
Inventory		1,429		(15,871)
Advances against auction contracts		(1,107)		2,897
Prepaid expenses and deposits		5,668		(2,534)
Income taxes receivable		(3,225)		(4,845)
Auction proceeds payable		135,432		171,660
Trade and other payables		(11,734)		(13,152)
Income taxes payable		(4,118)		(9,385)
Share unit liabilities		(6,664)		2,606
Other		2,238		(5,070)
Net changes in operating
assets and liabilities	$	52,390	$	57,626

Schedule of Supplemental Cash Flow

Six months ended June 30,		2017		2016
Interest paid, net of interest capitalized	$	2,250	$	2,922
Interest received		1,943		984
Net income taxes paid		23,458		36,870
Non-cash transactions:
Non-cash purchase of property, plant
and equipment under capital lease		3,483		756

Schedule of Cash, Cash Equivalents and Restricted Cash

		June 30,		December 31,
		2017		2016
Cash and cash equivalents	$	254,103	$	207,867
Restricted cash:
Current		113,391		50,222
Non-current		-		500,000
Cash, cash equivalents, and restricted cash	$	367,494	$	758,089

Schedule of Cash, Cash Equivalents and Restricted Cash Adjustments

Six months ended June 30,		2016
Net changes in operating assets and liabilities:
As reported	$	(52,931)
Current presentation		57,626
Net cash provided by operating activities:
As reported		37,555
Current presentation		148,112
Effect of changes in foreign currency rates on cash:
As reported		6,077
Current presentation		8,593
Increase (decrease) in cash:
As reported		(43,647)
Current presentation		69,426
Cash and cash equivalents		166,501
Total cash, cash equivalents and restricted cash	$	362,672