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Commitments and Contingencies (Lease Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Lease expense	$ 9,824	$ 8,703	$ 7,394

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- Definition

Operating and Capital Leases, Rent Expense, Net

+ References

No definition available.

+ Details

Name:	scsc_OperatingandCapitalLeasesRentExpenseNet
Namespace Prefix:	scsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration