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Reclassification
6 Months Ended
Jun. 30, 2012
Reclassification [Abstract]  
Reclassification
8. Reclassification.  Certain amounts in the balance sheet as of December 31, 2011 have been reclassified to conform with 2012 presentation. This reclassification had no impact on total assets, liabilities or stockholders' equity.