Derivative Instruments and Hedging Activities (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Feb. 28, 2012	Sep. 30, 2014	Sep. 30, 2013	Feb. 14, 2012 Forward Starting Interest Rate Swap Contracts [Member]	Sep. 30, 2014 Contracts translated to US dollars [Member]	Jun. 30, 2014 Contracts translated to US dollars [Member]
Additional Derivative Instruments and Hedging Activities (Textual) [Abstract]
Notional amount of the contracts translated into U.S. dollars					$ 65.5	$ 91.1
Notional amount of the contracts translated into U.S. dollars				150.0
Derivative Instruments and Hedging Activities (Textual) [Abstract]
Recognize loss on outstanding derivatives in the next 12 months		1.4
Gains or losses recognized in earnings due to ineffectiveness and excluded from effectiveness testing		0	0
Derivative, Gain (Loss) on Derivative, Net [Abstract]
Payments for derivative hedging instrument upon settlement	$ 22.4