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Working capital advances | 12 Months Ended
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Dec. 31, 2013
Working capital advances [Abstract] |
Working capital advances | 7. Working capital advances At the balance sheet date, all potentially uncollectible working capital advances are assessed individually for purposes of determining the appropriate provision for doubtful accounts. There was no provision for doubtful advances at December 31, 2013 (2012: $0).

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- Definition The entire disclosure for information about working capital advances. + References No definition available. + Details
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