Fair Value Measurement (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Measurement [Abstract]

Fair Value Assets Recurring and Nonrecurring

		September 30, 2016					December 31, 2015
	Category		Carrying amount		Fair value		Carrying amount		Fair value
Fair values disclosed, recurring:
Cash and cash equivalents	Level 1	$	230,984	$	230,984	$	210,148	$	210,148
Restricted cash	Level 1		83,413		83,413		83,098		83,098
Short-term debt (note 20)	Level 2		39,013		39,013		12,350		12,350
Current portion of long-
term debt (note 20)	Level 2		-		-		43,348		43,348
Long-term debt (note 20)	Level 2		101,590		104,558		54,567		56,126
Fair value measurements:
EquipmentOne reporting unit:
Customer relationships (note 17)	Level 3	$	6,300	$	6,300	$	12,431	$	N/A
Goodwill (note 18)	Level 3	$	14,357	$	14,357	$	37,931	$	N/A