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Information with Respect to Ordinary Shares that were Surrendered or Repurchased (Detail) - $ / shares | 3 Months Ended
--- | ---
Jun. 30, 2015 | Jun. 30, 2014
Equity, Class of Treasury Stock [Line Items] |  |  |
Total Number of Shares Purchased |  | 596 | 0
Average Price Paid Per Share |  | $ 27.01 |
Total Number of Shares Purchased as Part of Publicly Announced Plan or Program |  | 0 |
May 1-31, 2015 |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Total Number of Shares Purchased | [1],[2] | 596 |
Average Price Paid Per Share | [1] | $ 27.01 |
Total Number of Shares Purchased as Part of Publicly Announced Plan or Program | [1] | 0 |
[1] | Based on settlement date.
[2] | Surrendered by employees as payment of taxes withheld on the vesting of restricted A ordinary shares.

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- Definition Number of shares that have been repurchased and retired during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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