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Consolidated Statements of Comprehensive Income (Unaudited) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2012
Oct. 31, 2011
Consolidated Statements of Comprehensive Income [Abstract]        
Net earnings (loss) $ 807 $ (156) $ 1,495 $ (48)
Other comprehensive income (loss), net of tax:        
Foreign currency translation adjustments 111 (279) (25) (235)
Change in fair value of cash flow hedge 13 (39) 1 (94)
Other comprehensive income (loss) 124 (318) (24) (329)
Comprehensive income (loss) 931 (474) 1,471 (377)
Less comprehensive income (loss) attributable to the noncontrolling interest 158 (31) 212 55
Comprehensive income (loss) attributable to Kewaunee Scientific Corporation $ 773 $ (443) $ 1,259 $ (432)