Document and Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2021	Sep. 07, 2021	Dec. 31, 2020
Document And Entity Information
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Entity Registrant Name	PRO DEX INC
Entity Central Index Key	0000788920
Document Fiscal Year Focus	2021
Current Fiscal Year End Date	--06-30
Document Fiscal Period Focus	FY
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity a Voluntary Filer	No
Entity a Well-known Seasoned Issuer	No
Entity's Reporting Status Current	Yes
Entity Interactive Data Current	Yes
Entity Incorporation State Code	CO
Entity File Number	000-14942
Entity Common Stock, Shares Outstanding		3,645,660
Entity Public Float			$ 74,600,000