Document and Entity Information - shares	6 Months Ended
	Dec. 31, 2017	Feb. 02, 2018
Document And Entity Information
Entity Registrant Name	SCANSOURCE, INC.
Entity Central Index Key	0000918965
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		25,571,355