Summary of Marketable Securities (Detail) - USD ($) $ in Thousands |
Oct. 31, 2015 |
Apr. 30, 2015 |
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Schedule Of Marketable Securities [Line Items] | |||||||
Trading | [1],[2] | $ 144,905 | $ 131,399 | ||||
Less: current portion of marketable securities | [1],[2] | (10,106) | (12,580) | ||||
Non-current marketable securities | [1],[2] | 134,799 | 118,819 | ||||
Available-for-Sale | [1] | 2,003 | 13,177 | ||||
Less: current portion of marketable securities | [1] | (2,003) | (13,177) | ||||
Non-current marketable securities | [1] | 0 | 0 | ||||
Total | 146,908 | 144,576 | |||||
Less: current portion of marketable securities | (12,109) | (25,757) | |||||
Non-current marketable securities | 134,799 | 118,819 | |||||
Mutual Funds | |||||||
Schedule Of Marketable Securities [Line Items] | |||||||
Trading | [1],[2] | 144,905 | 131,399 | ||||
Total | 144,905 | 131,399 | |||||
Corporate Bonds | |||||||
Schedule Of Marketable Securities [Line Items] | |||||||
Available-for-Sale | [1] | 2,003 | 13,177 | ||||
Total | $ 2,003 | $ 13,177 | |||||
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- Definition Schedule Of Marketable Securities [Line Items] No definition available.
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- Definition Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading - current. No definition available.
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- Definition Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading - noncurrent. No definition available.
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- Definition Amount of debt securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of investments in debt securities classified as available-for-sale, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Total of debt securities categorized neither as held-to-maturity nor trading which are intended be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Total debt and equity financial instruments including: (1) securities held-to-maturity and (2) securities available-for-sale that will be held for the long-term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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