Document And Entity Information - shares	9 Months Ended
	Oct. 31, 2022	Dec. 02, 2022
Document Information [Line Items]
Entity Central Index Key	0000914122
Entity Registrant Name	Perma-Pipe International Holdings, Inc.
Amendment Flag	false
Current Fiscal Year End Date	--01-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2023
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Oct. 31, 2022
Document Transition Report	false
Entity File Number	001-32530
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-3922969
Entity Address, Address Line One	24900 Pitkin Road, Suite 309
Entity Address, City or Town	Spring
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77386
City Area Code	847
Local Phone Number	966-1000
Title of 12(b) Security	Common Stock, $.01 par value per share
Trading Symbol	PPIH
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	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		8,004,602