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Income taxes - Additional Information (Detail)
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12 Months Ended | 12 Months Ended | |||
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Jun. 30, 2013
USD ($)
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Jun. 30, 2012
USD ($)
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Jun. 30, 2011
USD ($)
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Jun. 30, 2013
R&D Europe
USD ($)
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Jun. 30, 2013
R&D Europe
GBP (£)
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| Income Taxes [Line Items] | |||||
| Federal statutory tax rate | 35.00% | ||||
| Dividend declared and paid to Company by subsidiary | $ 30,700,000 | £ 20,000,000 | |||
| Undistributed earnings of Company's foreign subsidiaries | 144,000,000 | ||||
| Unrecognized tax benefits that would affect the effective tax rate if recognized | $ 1,000 | $ 2,000 | $ 3,000 | ||
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
This element represents disclosure of the aggregate cash dividends paid to the entity by consolidated subsidiaries. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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