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Intangible Assets | 3 Months Ended
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Aug. 31, 2013
Intangible Assets | 7. INTANGIBLE ASSETS A summary of intangible assets as of August 31, 2013 and May 31, 2013 is as follows (in thousands):
|  | August 31, 2013 |  |  | May 31, 2013 |
|  | (unaudited) |  |  |  |  |  |  |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Customer relationships |  | $ | 27,349 |  |  | $ | (4,858 | ) |  | $ | 22,491 |  |  | $ | 21,418 |  |  | $ | (4,168 | ) |  | $ | 17,250 |
Non-compete agreements |  |  | 3,676 |  |  |  | (3,275 | ) |  |  | 401 |  |  |  | 3,701 |  |  |  | (3,232 | ) |  |  | 469 |
Trade names |  |  | 4,075 |  |  |  | (487 | ) |  |  | 3,588 |  |  |  | 4,075 |  |  |  | (424 | ) |  |  | 3,651 |
Technology |  |  | 5,112 |  |  |  | (1,299 | ) |  |  | 3,813 |  |  |  | 5,112 |  |  |  | (1,166 | ) |  |  | 3,946 |
Licenses |  |  | 683 |  |  |  | (66 | ) |  |  | 617 |  |  |  | 683 |  |  |  | (49 | ) |  |  | 634 |
Total |  | $ | 40,895 |  |  | $ | (9,985 | ) |  | $ | 30,910 |  |  | $ | 34,989 |  |  | $ | (9,039 | ) |  | $ | 25,950 |
Amortization expense for the three months ended August 31, 2013 and 2012 was $1.0 million and $0.7 million, respectively.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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