Derivative Instruments and Hedging Activities (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Mar. 31, 2014 Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Mar. 31, 2013 Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Mar. 31, 2014 Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Mar. 31, 2013 Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Mar. 31, 2014 Designated as Hedging Instrument [Member] Foreign currency forward [Member] Interest Expense/Other Income [Member]	Mar. 31, 2013 Designated as Hedging Instrument [Member] Foreign currency forward [Member] Interest Expense/Other Income [Member]	Mar. 31, 2014 Designated as Hedging Instrument [Member] Foreign currency forward [Member] Interest Expense/Other Income [Member]	Mar. 31, 2013 Designated as Hedging Instrument [Member] Foreign currency forward [Member] Interest Expense/Other Income [Member]	Mar. 31, 2014 Other Assets [Member] Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Sep. 30, 2013 Other Assets [Member] Designated as Hedging Instrument [Member] Foreign currency forward [Member]	Mar. 31, 2013 Other Assets [Member] Designated as Hedging Instrument [Member] Foreign currency forward [Member]	May 15, 2013 9% unsecured notes due 2015 [Member] Grupo Finmart [Member]
Derivative [Line Items]
Cross-border debt offering												$ 30,000,000
Fair value of derivative instrument									1,621,000	1,813,000	0
Amount of loss recognized in Other Comprehensive Income on derivatives (effective portion)	571,000	0	672,000	0
Amount of loss on derivatives reclassified into income from Accumulated Other Comprehensive Income (effective portion)					$ 297,000	$ 0	$ 542,000	$ 0