46 ANNUAL REPORT 2012 noncurrent liabilities will be reduced by approximately 192000 and 217000 respectively IFRS 12 Disclosure of Interests in Other Entities IFRS 12 details the disclosure requirements for entities reporting under IFRS 10 and IFRS 11 IFRS 12 also replaces the disclosure requirements in IAS 28 Investments in Associates These new disclosures have no impact on the Companys fnancial position or results of operations IFRS 12 is effective for years beginning on or after January 1 2013 IFRS 13 Fair Value Measurement IFRS 13 provides one source of guidance on measuring fair value The standard also enhances the disclosure requirements about fair value measurements IFRS 13 is effective for years beginning on or after January 1 2013 and is not expected to signifcantly impact the Companys fnancial position or results of operations IFRIC 20 Stripping Costs in the Production Phase of a Surface Mine IFRIC 20 provides guidance on the accounting for overburden waste removal in the production phase of a mine IFRIC 20 is effective for years beginning on or after January 1 2013 This new interpretation is not expected to have a signifcant impact on the Companys fnancial position or results of operations 6 CASH AND CASH EQUIVALENTS December 31 December 31 2012 2011 Cash excluding joint ventures and Build Finance SPVs 122772 Joint ventures 66566 50157 Build Finance SPVs 351 2279 66917 175208 Cash and cash equivalents on deposit in joint venture bank accounts cannot be accessed directly by the Company Cash and cash equivalents also include cash advanced by lenders to fnance the construction of build fnance projects through individual Build Finance Special Purpose Vehicles Build Finance SPVs Cash held in the Quito Airport concessionaire Quiport JV is included in restricted cash see Note 7 7 RESTRICTED CASH December 31 December 31 2012 2011 Joint ventures 35617 40215 Other restricted cash 3676 5867 39293 46082 In addition to cash held in Quiport JV restricted cash also includes cash that was deposited as collateral for borrowings and letters of credit issued by the Company As such this cash is not available for general operating purposes 8 TRADE AND OTHER RECEIVABLES December 31 December 31 2012 2011 Trade receivables 424873 356592 Allowance for doubtful accounts 1969 1627 422904 354965 Holdbacks receivable 189430 168386 Other 12135 9884 201565 178270 Total 624469 533235 Amounts receivable beyond one year 53256 33526 Other receivables include a 600 2011 nil noninterest bearing relocation loan due from an offcer of the Company The loan balance is expected to be repaid in 2013 A reconciliation of the beginning and ending carrying amounts of the Companys allowance for doubtful accounts is as follows December 31 December 31 For the year ended 2012 2011 Balance beginning of year 1627 4645 Additional amounts provided for during the year 1588 1294 Trade receivables written off during the year 35 2685 Amounts recovered 1211 1627 Balance end of year 1969 1627 NOTES TO THE CONSOLIDA TED FINANCIAL ST A TEMENTS DECEMBER 31 2012 AND 2011 IN THOUSANDS OF CANADIAN DOLLARS EXCEPT PER SHARE AMOUNTS