Document And Entity Information - shares	6 Months Ended
	Dec. 31, 2020	Feb. 04, 2021
Document Information [Line Items]
Entity Central Index Key	0000310354
Entity Registrant Name	STANDEX INTERNATIONAL CORP/DE/
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	1-7233
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	31-0596149
Entity Address, Address Line One	23 KEEWAYDIN DRIVE
Entity Address, City or Town	Salem
Entity Address, State or Province	NH
Entity Address, Postal Zip Code	03079
City Area Code	603
Local Phone Number	893-9701
Title of 12(b) Security	Common Stock, Par Value $1.50 Per Share
Trading Symbol	SXI
Security Exchange Name	NYSE
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		12,356,728