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Note 6. Fair Value - Textuals (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis        
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net $ 735 $ 0 $ 735 $ 0
Derivatives Not Designated as Hedging Instruments, Pre-Tax Gain (Loss) Recognized in Income (1,116) 803 (1,313) 2,068
Fair Value, Purchases and Sales of Level 3 Assets     0 0
Fair Value, Transfers Between Levels, Amount 0   0  
Stock Warrant
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis        
Fair Value Assumptions, Risk Free Interest Rate     0.14%  
Fair Value Assumptions, Expected Volatility Rate     103.80%  
Fair Value Assumptions, Expected Term     6 months  
Common Stock
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis        
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net 700      
Non-Operating Income (Expense) | Stock Warrant
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis        
Derivatives Not Designated as Hedging Instruments, Pre-Tax Gain (Loss) Recognized in Income $ (751) $ (11) $ (752) $ (41)