Document and Entity Information Document - USD ($)	12 Months Ended
	Oct. 31, 2019	Dec. 17, 2019	Apr. 30, 2019
DEI [Abstract]
Entity Registrant Name	SHILOH INDUSTRIES INC
Entity Central Index Key	0000904979
Current Fiscal Year End Date	--10-31
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Period End Date	Oct. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q4
Amendment Flag	false
Entity Common Stock, Shares Outstanding		24,191,338
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 85,476,723