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Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 31, 2014 | May 31, 2013 | May 31, 2012 | May 31, 2014 Vortex Medical [Member] | Oct. 15, 2012 Vortex Medical [Member] | May 31, 2014 Microsulis Medical Ltd [Member] | Feb. 01, 2013 Microsulis Medical Ltd [Member] | May 31, 2014 Navilyst [Member] | May 22, 2012 Navilyst [Member] | May 31, 2014 Clinical Devices, B.V. [Member] | Aug. 15, 2013 Clinical Devices, B.V. [Member]
Adjustments to Goodwill |  |  |  |  |  |  |  |  |  |  |
Goodwill, Beginning Balance |  | $ 355,458 | $ 308,912 |  | $ 29,519 |  | $ 19,284 |  | $ 144,705 |  | $ 4,800
Goodwill recognized from business combination and asset acquisition |  |  |  | 29,519 |  | 19,284 |  |  |  | 4,836 |
Adjustments to Navilyst purchase price allocation | 500 |  |  |  |  |  |  | (2,257) |  |  |
Goodwill, Ending Balance | $ 360,294 | $ 355,458 | $ 308,912 | $ 29,519 | $ 29,519 | $ 19,284 | $ 19,284 |  | $ 144,705 |  | $ 4,800

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e961-128460 + Details
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