Cover Page - USD ($)	12 Months Ended
	Jun. 30, 2019	Oct. 16, 2019	Dec. 31, 2018
Cover page.
Document Type	10-K/A
Document Annual Report	true
Document Period End Date	Jun. 30, 2019
Document Transition Report	false
Entity File Number	000-26926
Entity Registrant Name	ScanSource, Inc.
Entity Incorporation, State or Country Code	SC
Entity Tax Identification Number	57-0965380
Entity Address, Address Line One	6 Logue Court
Entity Address, City or Town	Greenville
Entity Address, State or Province	SC
Entity Address, Postal Zip Code	29615
City Area Code	864
Local Phone Number	288-2432
Title of 12(b) Security	Common stock, no par value
Trading Symbol	SCSC
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 877,604,886
Entity Common Stock, Shares Outstanding		25,241,115
Amendment Flag	true
Amendment Description	This Form 10-K/A (“Amendment No.1”) amends the annual report on Form 10-K of ScanSource, Inc. for the fiscal year ended June 30, 2019, filed with the Securities and Exchange Commission (the “SEC”) on August 22, 2019 (the “2019 Form 10-K”). The primary purpose of Amendment No. 1 is to provide the information required by Items 10 through 14 of Part III of the 2019 Form 10-K. This Amendment No. 1 speaks as of the original filing date of the 2019 Form 10-K and reflects only the changes to the cover page, and Items 10, 11, 12, 13 and 14 of Part III and inclusion of the certifications required under Section 302 of The Sarbanes-Oxley Act of 2002 in Item 15 of Part IV. No other information included in the 2019 Form 10-K, including the information set forth in Part I and Part II, has been modified or updated in any way. The 2019 Form 10-K continues to speak as of the date of the original filing, and the Company has not updated the disclosures contained therein to reflect any events which occurred at a date subsequent to the original filing other than as expressly indicated in this Amendment No. 1. Accordingly, this Amendment No. 1 should be read in conjunction with the 2019 Form 10-K and the Company’s other SEC filings. As used herein, the terms “ScanSource,” the “Company,” “we,” “us,” and “our” refer to ScanSource, Inc., a South Carolina corporation, and its consolidated subsidiaries as a combined entity, except where it is clear that the terms mean only ScanSource, Inc. The term “common stock” means shares of our common stock, no par value per share.
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Central Index Key	0000918965
Current Fiscal Year End Date	--06-30