Annual report pursuant to Section 13 and 15(d)

Income taxes - Additional Information (Detail)

v2.4.0.8
Income taxes - Additional Information (Detail)
12 Months Ended 12 Months Ended
Jun. 30, 2013
USD ($)
Jun. 30, 2012
USD ($)
Jun. 30, 2011
USD ($)
Jun. 30, 2013
R&D Europe
USD ($)
Jun. 30, 2013
R&D Europe
GBP (£)
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