Quarterly report pursuant to Section 13 or 15(d)

Recent Accounting Pronouncements

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Recent Accounting Pronouncements
 3 Months Ended
Mar. 31, 2013
Recently Adopted Accounting Guidance [Abstract]  
Recently Adopted Accounting Guidance
(10) Recently Adopted Accounting Guidance

In February 2013, the Financial Accounting Standards Board (FASB) issued an accounting update, which requires the presentation of information about reclassifications out of accumulated other comprehensive income. The accounting update is effective for fiscal years and interim periods within those years beginning after December 15, 2012. We adopted the provisions of this accounting update during the first quarter 2013, which affects the disclosure of information and does not have any impact on our consolidated financial position and results of operations.