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Fair Value Measurements and Fair Value of Financial Instruments (Tables)
6 Months Ended
Dec. 31, 2012
Fair Value Measurements and Fair Value of Financial Instruments [Abstract]  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]
Carrying Amounts and Estimated Fair Value [Table Text Block]