Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 22, 2021	Jun. 30, 2020
Cover [Abstract]
Entity Registrant Name	DATA I/O CORPORATION
Entity Central Index Key	0000351998
Document Type	10-K
Document Period End Date	Dec. 31, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	WA
Entity File Number	0-10394
Entity Public Float			$ 27,952,330
Entity Common Stock, Shares Outstanding		8,421,599
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020