Document and Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2017	Aug. 25, 2017	Dec. 31, 2016
Document And Entity Information
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Entity Registrant Name	SCANSOURCE, INC.
Entity Central Index Key	0000918965
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		25,432,900
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Public Float			$ 1,012,679,122