Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation Change in Net Deferred Tax Assets and Liabilities (Details)

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Income Taxes - Reconciliation Change in Net Deferred Tax Assets and Liabilities (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Reconciliation of change in the net deferred tax assets and liabilities:    
Net change in deferred income tax assets and liabilities $ (134)  
Net change in deferred income tax assets and liabilities associated with Other Comprehensive Income     
Deferred income tax provision for the period $ (134) $ 132