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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 918	$ 358	$ 3,875	$ 3,225
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	203	(63)	49	(232)
Change in fair value of cash flow hedge	12	35	30	53
Other comprehensive income (loss)	215	(28)	79	(179)
Comprehensive income, net of tax	1,133	330	3,954	3,046
Less: comprehensive income attributable to the noncontrolling interest	35	17	120	98
Comprehensive income attributable to Kewaunee Scientific Corporation	$ 1,098	$ 313	$ 3,834	$ 2,948

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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