Derivative Instruments and Hedging Activities (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Jun. 30, 2013 Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Jun. 30, 2012 Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Jun. 30, 2013 Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Jun. 30, 2012 Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Jun. 30, 2013 Designated as Hedging Instrument [Member] Foreign currency forward [Member] Other Income (Expense) [Member]	Jun. 30, 2012 Designated as Hedging Instrument [Member] Foreign currency forward [Member] Other Income (Expense) [Member]	Jun. 30, 2013 Designated as Hedging Instrument [Member] Foreign currency forward [Member] Other Income (Expense) [Member]	Jun. 30, 2012 Designated as Hedging Instrument [Member] Foreign currency forward [Member] Other Income (Expense) [Member]	Jun. 30, 2013 Non-designated derivatives [Member] Gold collar [Member] Other Income (Expense) [Member]	Jun. 30, 2012 Non-designated derivatives [Member] Gold collar [Member] Other Income (Expense) [Member]	Jun. 30, 2013 Non-designated derivatives [Member] Gold collar [Member] Other Income (Expense) [Member]	Jun. 30, 2012 Non-designated derivatives [Member] Gold collar [Member] Other Income (Expense) [Member]	Jun. 30, 2013 Other Assets [Member] Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Sep. 30, 2012 Other Assets [Member] Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Jun. 30, 2012 Other Assets [Member] Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Jun. 30, 2013 Cross-border Debt [Member] Grupo Finmart [Member]
Derivative [Line Items]
Cross-border debt offering																$ 30,000,000
Fair value of derivative instrument													2,395,000	0	0
(Gains) Losses Recognized in Income									0	0	(151,000)	0
Amount of (gain) recognized in Other Comprehensive Income on derivatives (effective portion)	(500,000)	0	(500,000)	0
Amount of (gain) loss on derivatives reclassified into income from Accumulated Other Comprehensive Income (effective portion)					(1,888,000)	0	(1,888,000)	0
Amount of (gain) loss on derivatives recognized in income (ineffective portion excluded from effectiveness testing)					$ (41,000)	$ 0	$ (41,000)	$ 0