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Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified | Total | Common Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | ---
Balance, Amount at Jun. 30, 2009 | $ 445,446 | $ 104,461 | $ 337,822 | $ 3,163
Balance, Shares at Jun. 30, 2009 |  | 26,565,870 |  |
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |
Net income | 48,812 |  | 48,812 |
Unrealized gain on hedged transaction, net of tax | 148 |  |  | 148
Foreign currency translation adjustment | (15,045) |  |  | (15,045)
Total comprehensive income | 33,915 |  |  |
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes, Shares |  | 137,168 |  |
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes, Amount | 1,095 | 1,095 |  |
Share based compensation | 6,168 | 6,168 |  |
Tax benefit of deductible compensation arising from exercise or vesting of share based payment arrangements | 227 | 227 |  |
Balance, Amount at Jun. 30, 2010 | 486,851 | 111,951 | 386,634 | (11,734)
Balance, Shares at Jun. 30, 2010 |  | 26,703,038 |  |
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |
Net income | 73,523 |  | 73,523 |
Unrealized gain on hedged transaction, net of tax | 468 |  |  | 468
Foreign currency translation adjustment | 14,895 |  |  | 14,895
Total comprehensive income | 88,886 |  |  |
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes, Shares |  | 406,894 |  |
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes, Amount | 6,373 | 6,373 |  |
Share based compensation | 5,081 | 5,081 |  |
Tax benefit of deductible compensation arising from exercise or vesting of share based payment arrangements | 203 | 203 |  |
Balance, Amount at Jun. 30, 2011 | 587,394 | 123,608 | 460,157 | 3,629
Balance, Shares at Jun. 30, 2011 | 27,109,932 | 27,109,932 |  |
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |
Net income | 74,288 |  | 74,288 |
Unrealized gain on hedged transaction, net of tax | 139 |  |  | 139
Foreign currency translation adjustment | (25,459) |  |  | (25,459)
Total comprehensive income | 48,968 |  |  |
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes, Shares |  | 494,908 |  |
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes, Amount | 7,642 | 7,642 |  |
Share based compensation | 7,004 | 7,004 |  |
Tax benefit of deductible compensation arising from exercise or vesting of share based payment arrangements | 1,303 | 1,303 |  |
Balance, Amount at Jun. 30, 2012 | $ 652,311 | $ 139,557 | $ 534,445 | $ (21,691)
Balance, Shares at Jun. 30, 2012 | 27,604,840 | 27,604,840 |  |

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