Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Nov. 21, 2022
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2022
Entity File Number	001-40467
Entity Registrant Name	IRON SPARK I INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-1693305
Entity Address, Address Line One	125 N Cache St.
Entity Address, Address Line Two	2nd FL., Box 3789
Entity Address, City or Town	Jackson
Entity Address State Or Province	WY
Entity Address, Postal Zip Code	83001
City Area Code	307
Local Phone Number	200-9007
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Trading Symbol	ISAA
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	true
Entity Central Index Key	0001845601
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false
Class A common stock
Document and Entity Information
Entity Common Stock, Shares Outstanding		17,870,800
Class B common stock
Document and Entity Information
Entity Common Stock, Shares Outstanding		4,170,000