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Fair Value Measurements (Narrative) (Details) - USD ($)
Jun. 30, 2015
Jun. 30, 2014
Fair Value Measurements [Abstract]    
Level 1 to Level 2 transfers, assets amount $ 0 $ 0
Level 2 to Level 1 transfers, assets amount 0 0
Level 1 to Level 2 transfers, liabilities amount 0 0
Level 2 to Level 1 transfers, liabilities amount 0 0
Liabilities measured at fair value on recurring basis 0 0
Liabilities measured at fair value on nonrecurring basis 0 0
Assets measured at fair value on recurring basis using significant unobservable inputs $ 0 $ 0