Derivative Financial Instruments and Hedging Activities - Income Statement Location (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2013		Jun. 30, 2013
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
AOCI balance expected to be reclassified in next twelve months			$ 1,900,000
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Comprehensive Income (Loss) [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Designated hedged item, gain (loss) recognized in other comprehensive income	(1,509,000)	[1]	(1,509,000)	[1]
Designated as Hedging Instrument [Member] | Foreign Exchange Option [Member] | Other Comprehensive Income (Loss) [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Designated hedged item, gain (loss) recognized in other comprehensive income	(363,000)	[1]	(363,000)	[1]
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Operating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-designated hedged item, gain (Ioss) recognized in income	(456,000)		1,426,000
Not Designated as Hedging Instrument [Member] | Foreign Exchange Option [Member] | Other Operating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-designated hedged item, gain (Ioss) recognized in income	(1,491,000)		(1,491,000)
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Interest and Other Miscellaneous Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-designated hedged item, gain (Ioss) recognized in income	2,650,000		2,650,000
Not Designated as Hedging Instrument [Member] | Fuel [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-designated hedged item, gain (Ioss) recognized in income	$ 148,000		$ 148,000

[1] See Note 17 — Accumulated Other Comprehensive Loss.