Gain (Losses) on Derivative Financial Instruments (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Not designated as hedging instrument [Member] | Forward exchange [Member]
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Derivative Instruments, Gain (Loss) [Line Items] | ||||
Gains (losses) on derivative financial instruments that were recorded in the consolidated statement of income | $ (1,302) | $ 16,804 | $ (4,564) | $ (14,588) |
Not designated as hedging instrument [Member] | Costless collar contracts [Member]
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Derivative Instruments, Gain (Loss) [Line Items] | ||||
Gains (losses) on derivative financial instruments that were recorded in the consolidated statement of income | 917 | (1,765) | 3,172 | 5,850 |
Designated as hedging instrument [Member] | Cross currency swap [Member]
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Derivative Instruments, Gain (Loss) [Line Items] | ||||
Derivative and non derivative instruments gain (loss) recognized in accumulated oher comprehensive income (loss) | (9,632) | 1,674 | (12,163) | 17,315 |
Non derivative financial instruments [Member] | Foreign denominated debt [Member]
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Derivative Instruments, Gain (Loss) [Line Items] | ||||
Derivative and non derivative instruments gain (loss) recognized in accumulated oher comprehensive income (loss) | $ 642 | $ 5,287 | $ (2,856) | $ 16,665 |