Supplementary cash flow information

12 Months Ended

Dec. 31, 2017

Statement [Line Items]

Supplementary cash flow information [text block]

29. Supplementary cash flow information

(a) Change in non-cash working capital:

		Year ended
		December 31,
		2017			2016
Change in:
Trade and other receivables	$	(8,979	)	$	68,270
Other financial assets/liabilities		6,620			19,181
Inventories		(18,690	)		2,653
Prepaid expenses and other current assets		(4,619	)		3,646
Trade and other payables		(6,336	)		(8,339	)
Changes in taxes payable/receivable		39,326			3,666
Other		1,693			(1,871	)
	$	9,015		$	87,206

(b) Non-cash transactions:

During the year ended December 31, 2017, the Group entered into the following non-cash investing and financing activities which are not reflected in the consolidated statements of cash flows:

- Remeasurements of the Group's decommissioning and restoration liabilities for the year ended December 31, 2017 led to a net increase in related property, plant and equipment assets of $10,661 (year ended December 31, 2016 - $24,956) as a result of declines in discount rates and increased mine activity footprints and the resulting higher disturbance.

- Property, plant and equipment included $3,234 of net additions related to capital additions under finance lease (December 31, 2016 - $12,932).

- In 2017, the Peru business unit completed the sale of some heavy mobile equipment and then executed a finance lease to leaseback that same equipment. The transaction resulted in cash proceeds of $67,275. Given that the classification of the leaseback as a finance lease, there was no change in the carrying value of the heavy mobile equipment and no impacts to the statements of income.