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Consolidated Statements of Income (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended
Aug. 31, 2013
Aug. 31, 2012
REVENUES    
Product revenues $ 51,346 $ 44,813
Service revenues 7,202 4,916
Total Revenues 58,548 49,729
COST OF REVENUES    
Cost of product revenues 23,510 20,318
Cost of service revenues 4,674 2,917
Total Cost of Revenues 28,184 23,235
GROSS MARGIN 30,364 26,494
OPERATING EXPENSES    
Sales and marketing 10,324 9,758
General and administrative 5,536 4,482
Research and development 2,086 1,926
Operating Expenses, Total 17,946 16,166
OPERATING INCOME 12,418 10,328
OTHER INCOME (EXPENSE)    
Interest income 31 38
Change in purchase consideration 0 (13)
Other income (expense) (552) 47
Nonoperating Income (Expense), Total (521) 72
INCOME BEFORE INCOME TAXES 11,897 10,400
INCOME TAXES 4,200 3,700
NET INCOME 7,697 6,700
NET LOSS (INCOME) ATTRIBUTABLE TO NON-CONTROLLING INTEREST 142 14
NET INCOME ATTRIBUTABLE TO NEOGEN CORPORATION $ 7,839 $ 6,714
NET INCOME ATTRIBUTABLE TO NEOGEN CORPORATION PER SHARE    
Basic $ 0.33 $ 0.28
Diluted $ 0.32 $ 0.28