Stockholders' Equity (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended			1 Months Ended	3 Months Ended
	Jul. 24, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 2% convertible senior notes [Member]	Jul. 24, 2014 Scenario, Forecast [Member]	Sep. 30, 2014 Scenario, Forecast [Member]
Class of Stock [Line Items]
Conversion of Stock, Shares Issued		38,600,000
Dividends, Common Stock [Abstract]
Cash dividends declared per common share (in dollars per share)		$ 0.0375	$ 0.0000	$ 0.0750	$ 0.1875			$ 0.0625
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Amount remaining under stock repurchase authorization		$ 100,000,000
Amount of stock repurchase authorization	100,000,000						100,000,000
Debt Conversion, Converted Instrument, Shares Issued		77.18004
Principal amount						$ 1,000
Debt Instrument, Convertible, Conversion Price						$ 12.96