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Acquisition (Tables) | 9 Months Ended
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Jan. 31, 2013
Summary Of Acquisitions | Following is a summary of acquisitions completed during the nine months ended January 31, 2013:
|  | Global Novations (1) |  |  | PDI Ninth House |  |  | Total |
|  | (in thousands) |
Assets acquired |  | $ | 8,008 |  |  | $ | 25,107 |  |  | $ | 33,115 |
Intangibles acquired |  |  | 12,200 |  |  |  | 30,000 |  |  |  | 42,200 |
Liabilities acquired |  |  | 6,258 |  |  |  | 26,382 |  |  |  | 32,640 |
Net assets acquired |  |  | 13,950 |  |  |  | 28,725 |  |  |  | 42,675 |
Purchase price |  |  | 34,471 |  |  |  | 92,446 |  |  |  | 126,917 |
Goodwill |  | $ | 20,521 |  |  | $ | 63,721 |  |  | $ | 84,242 |
Acquisition costs |  | $ | 650 |  |  | $ | 1,979 |  |  | $ | 2,629 |
(1) | During the three months ended January 31, 2013, adjustments to the preliminary purchase price allocation, resulted in a $0.1 million increase in purchase price and goodwill.

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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph F4 -Subparagraph e -Appendix F Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1486-128463 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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