Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 23, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-35376
Entity Registrant Name	OBLONG, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0312442
Entity Address, Address Line One	25587 Conifer Road
Entity Address, Address Line Two	Suite 105-231
Entity Address, City or Town	Conifer
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80433
City Area Code	303
Local Phone Number	640-3838
Title of 12(b) Security	Common Stock, $0.0001 par value
Trading Symbol	OBLG
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 50,293,167
Entity Common Stock, Shares Outstanding (in shares)		30,816,048
Entity Central Index Key	0000746210
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
ICFR Auditor Attestation Flag	false