Document And Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2018	Aug. 22, 2018	Dec. 29, 2017
Document Information [Line Items]
Entity Registrant Name	STANDEX INTERNATIONAL CORP/DE/
Entity Central Index Key	0000310354
Trading Symbol	sxi
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding (in shares)		12,826,411
Entity Public Float			$ 1,288,543,257
Document Type	10-K
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false