Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 01, 2019
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2019
Entity Registrant Name	Addus HomeCare Corp
Entity Central Index Key	0001468328
Trading Symbol	adus
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Address, State or Province	TX
Entity File Number	001-34504
Entity Tax Identification Number	20-5340172
Entity Address, Address Line One	6801 Gaylord Parkway,
Entity Address, Address Line Two	Suite 110
Entity Address, City or Town	Frisco
Entity Address, Postal Zip Code	75034
City Area Code	(469)
Local Phone Number	535-8200
Entity Common Stock, Shares Outstanding		15,559,260
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	DE
Title of 12(b) Security	Common Stock, $0.001 par value
Security Exchange Name	NASDAQ