Document and Entity Information - USD ($)	10 Months Ended
	Dec. 31, 2021	Apr. 06, 2022
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2021
Entity File Number	001-40784
Entity Registrant Name	BANNER ACQUISITION CORP.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-2670267
Entity Address, Address Line One	300 S 1350 E, 2nd Floor
Entity Address, City or Town	Lehi
Entity Address State Or Province	UT
Entity Address, Postal Zip Code	84043
City Area Code	801
Local Phone Number	447-1534
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Public Float	$ 156,686,000
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
ICFR Auditor Attestation Flag	false
Entity Ex Transition Period	false
Entity Shell Company	true
Entity Central Index Key	0001852332
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false
Transition Report	false
Auditor Name	Marcum LLP
Auditor Firm ID	688
Auditor Location	New York, NY
Units, each consisting of one share of Class A Common Stock and one-half of one Warrant
Document Information [Line Items]
Title of 12(b) Security	Units, each consisting of one share of Class A Common Stock, $0.0001 par value, andone-half of one redeemable warrant
Trading Symbol	BNNRU
Security Exchange Name	NASDAQ
Class A Common Stock
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock, par value $0.0001 per share
Trading Symbol	BNNR
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		15,700,000
Warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50
Document Information [Line Items]
Title of 12(b) Security	Warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share
Trading Symbol	BNNRW
Security Exchange Name	NASDAQ
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		3,925,000