Document And Entity Information - USD ($) $ in Billions	12 Months Ended
	Jan. 31, 2018	Mar. 31, 2018	Jul. 31, 2017
Document Information [Line Items]
Entity Registrant Name	QAD INC
Entity Central Index Key	0001036188
Trading Symbol	qada
Current Fiscal Year End Date	--01-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Public Float			$ 0.3
Document Type	10-K
Document Period End Date	Jan. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		3,218,246
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		16,042,279