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Financial Instruments | 12 Months Ended
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Dec. 31, 2015
Fair Value Disclosures [Abstract] |
Financial Instruments | Financial Instruments As of December 31, 2015, the Company’s financial instruments, measured at fair value on a recurring and non-recurring basis, were as follows:
| Amount at Fair Value $ |  | Fair Value Measurements Using
| Level 1 $ |  | Level 2 $ |  | Level 3 $
Assets: |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |
Money market funds | 59,655 |  |  | 59,655 |  |  | — |  |  | — |
U.S. term deposits | 21,259 |  |  | 21,259 |  |  | — |  |  | — |
Marketable securities: |  |  |  |  |  |  |
U.S. federal bonds | 35,970 |  |  | 35,970 |  |  | — |  |  | — |
Corporate bonds | 44,028 |  |  | — |  |  | 44,028 |  |  | — |
All cash equivalents and marketable securities mature within one year of the consolidated balance sheet date. As at December 31, 2015 the Company did not have any outstanding foreign exchange forward contracts. As of December 31, 2014, the Company’s financial instruments, measured at fair value on a recurring and non-recurring basis, were as follows:
| Amount at Fair Value $ |  | Fair Value Measurements Using
| Level 1 $ |  | Level 2 $ |  | Level 3 $
Assets: |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |
Money market funds | 31,271 |  | 31,271 |  |  | — |  |  | — |
Canadian guaranteed investment certificates | 1,294 |  | 1,294 |  |  | — |  |  | — |
U.S. term deposits | 3,500 |  | 3,500 |  |  | — |  |  | — |
Marketable securities: |  |  |  |  |  |  |
U.S. federal bonds | 5,502 |  | 5,502 |  |  | — |  |  | — |
Corporate bonds | 12,207 |  | — |  |  | 12,207 |  |  | — |
Derivatives: |  |  |  |  |  |  |
Foreign exchange forward contracts | 7 |  | — |  |  | 7 |  |  | — |
As at December 31, 2014 the Company held foreign exchange forward contracts to convert USD into CAD to fund a portion of its operations. The fair value of foreign exchange forward contracts and corporate bonds was based upon Level 2 inputs, which included period-end mid-market quotations for each underlying contract as calculated by the financial institution with which the Company has transacted. The quotations are based on bid/ask quotations and represent the discounted future settlement amounts based on current market rates. There were no transfers between Levels 1, 2 and 3 during the years ended December 31, 2015 and 2014.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13504-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 + Details
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