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Financial instruments and risk management (Tables)

12 Months Ended

Dec. 31, 2015

Schedule of financial instruments with carrying amounts that differ from fair values

Financial instruments with carrying amounts that differ from their fair values are as follows:



		December 31, 2015				December 31, 2014
	Fair Value Hierarchy Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Capital lease obligations ⁽ⁱ⁾	Level 2	$	62,443	$	57,976	$	64,055	$	58,951
Series 1 Debentures ⁽ⁱⁱ⁾	Level 1	19,927		19,927		58,733		58,733


(i)	The fair values of amounts due under capital leases are based on management estimates which are determined by discounting cash flows required under the instruments at the interest rates currently estimated to be available for instruments with similar terms.


(ii)	The fair value of the Series 1 Debentures is based upon the period end market price.

Schedule of non-financial assets measured at fair value on a non-recurring basis

Non-financial assets measured at fair value on a non-recurring basis as at December 31, 2015 and December 31, 2014 in the financial statements are summarized below:



	December 31, 2015					December 31, 2014
	Carrying Amount		Change in Fair Value			Carrying Amount		Change in Fair Value
Assets held for sale	$	180	$	(1,384	)	$	29,589	$	(3,461	)

Schedule of maximum exposure to credit risk for accounts receivable and unbilled revenue

The Company’s maximum exposure to credit risk for accounts receivable and unbilled revenue is as follows:



	December 31, 2015		December 31, 2014
Trade accounts receivables	$	24,028	$	65,474
Other receivables	708		1,029
Total accounts receivable	$	24,736	$	66,503
Unbilled revenue	$	17,565	$	43,622

Schedule of trade receivables aging

As at December 31, 2015 and December 31, 2014, trade receivables are aged as follows:



	December 31, 2015		December 31, 2014
Not past due	$	23,946	$	60,543
Past due 1-30 days	—		3,658
Past due 31-60 days	—		2
More than 61 days	82		1,271
Total	$	24,028	$	65,474

Schedule of changes to the allowance for uncollectible accounts

Changes to the allowance are as follows:



Year ended December 31,	2015		2014
Opening balance	$	—	$	—
Current year allowance	—		164
Write-offs	—		(164		)
Ending balance	$	—	$	—

Total revenues

Concentration Risk [Line Items]

Schedule of major customers

The following customers accounted for 10% or more of total revenues:



Year ended December 31,	2015		2014
Customer A	41	%	11	%
Customer B	34	%	14	%
Customer C	10	%	6	%
Customer D	8	%	28	%
Customer E	1	%	29	%

Accounts receivable and unbilled revenue

Concentration Risk [Line Items]

Schedule of major customers

At December 31, 2015 and December 31, 2014, the following customers represented 10% or more of accounts receivable and unbilled revenue:



	December 31, 2015		December 31, 2014
Customer 1	42	%	11	%
Customer 2	21	%	1	%
Customer 3	20	%	6	%
Customer 4	2	%	26	%
Customer 5	—	%	49	%

- Definition

Tabular disclosure of all significant concentrations of risk, including credit risk and market risk, arising from all financial instruments (as defined), whether from an individual counterparty or groups of counterparties. The disclosure concerning concentrations of risk may consist of the following information: (1) for concentrations of credit risk disclosure may include: (a) information about the (shared) activity, region, or economic characteristic that identifies the concentration, (b) the maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity, (c) the policy of requiring collateral or other security to support financial instruments subject to credit risk, information about the entity's access to that collateral or other security, and the nature and a brief description of the collateral or other security supporting those financial instruments, and (d) the policy of entering into master netting arrangements to mitigate the credit risk of financial instruments, information about the arrangements for which the entity is a party, and a brief description of the terms of those arrangements, including the extent to which they would reduce the entity's maximum amount of loss due to credit risk and (2) for disclosure of quantitative information about the market risks of financial instruments that is consistent with the way the company manages or adjusts those risks, disclosure may include: (a) more details about current positions and perhaps activity during the period, (b) the hypothetical effects on comprehensive income (or net assets), or annual income, of several possible changes in market prices, (c) a gap analysis of interest rate re-pricing or maturity dates, (d) the duration of the financial instruments, (e) the entity's value at risk from derivatives and from other positions at the end of the reporting period and the average value at risk during the year, or (f) other ways of reporting quantitative information as internally developed.

+ References + Details