Derivative Financial Instruments Foreign Currency Exchange Rate Risk (Details)		3 Months Ended			0 Months Ended				3 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2012 The Swap [Member] USD ($)	Dec. 01, 2010 The Swap [Member] USD ($)	Dec. 01, 2010 The Swap [Member] AUD	May 23, 2014 The Swaps [Member] USD ($)	May 23, 2014 The Swaps [Member] AUD	Dec. 03, 2012 The Swaps [Member] USD ($)	Dec. 03, 2012 The Swaps [Member] AUD	Dec. 31, 2012 Australian Dollar BBSW [Member] The Swaps [Member]	Dec. 31, 2012 LIBOR [Member] The Swaps [Member]
Derivatives [Line Items]
Third party debt related to foreign operations denominated in foreign currencies	$ 168,300,000
Notional Amount			100,600,000	105,000,000			109,600,000	105,000,000
Description of variable rate basis on the notional amount									Australian dollar BBSW plus 3.25%	LIBOR plus 2.82%
Derivative settlement payment		9,100,000
Payments for Derivative Instrument						105,000,000
Proceeds from Derivative Instrument					$ 108,900,000