Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Sep. 01, 2017	Dec. 31, 2016
Document And Entity Information
Entity Registrant Name	PRO DEX INC
Entity Central Index Key	0000788920
Document Type	10-K
Trading Symbol	PDEX
Document Period End Date	Jun. 30, 2017
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Entity a Well-known Seasoned Issuer	No
Entity a Voluntary Filer	No
Entity's Reporting Status Current	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float			$ 10.8
Entity Common Stock, Shares Outstanding		4,193,791
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2017