Accounting pronouncements

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

New Accounting Pronouncements and Changes in Accounting Principles [Text Block]

Accounting pronouncements

Recently adopted accounting pronouncements

ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income

The Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, in February 2013. This topic adds new disclosure requirements for items reclassified out of accumulated other comprehensive income. The update requires that an entity present, either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source and the income statement line items affected by the reclassification. The guidance is effective for interim and annual reporting periods beginning on or after December 15, 2012. The adoption of this Topic did not have a material impact on the Company’s consolidated financial statements.