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Stockholders' Equity (Stock Option Plans) (Details)
Jun. 30, 2012
2004 Employee Stock Option Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock option plan, number of shares approved 1,700,000
Stock options plan, proposed increase amount 3,400,000
2004 Non-Executive Director Stock Option Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock option plan, number of shares approved 200,000
Stock options plan, proposed increase amount 500,000