Fair Value Measurements (Narrative) (Details) (Significant Unobservable Inputs (Level 3) [Member])	3 Months Ended	12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012
Fair Value Measurements [Line Items]
Unobservable Price Component, as a percent	100.00%
Fair Value, Measurements, Recurring [Member]
Fair Value Measurements [Line Items]
Threshold of relative value of unobservable inputs to the total fair value for Level 3	10.00%
Weighted Average [Member] | Fair Value, Measurements, Recurring [Member] | Inventories Component [Member] | Assets [Member]
Fair Value Measurements [Line Items]
Basis	14.80%	8.80%
Weighted Average [Member] | Fair Value, Measurements, Recurring [Member] | Inventories Component [Member] | Liabilities [Member]
Fair Value Measurements [Line Items]
Basis	4.00%	2.30%