Employee Benefit Plans (Narrative) (Details)	12 Months Ended
	Jun. 30, 2018 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Deferred compensation plan, employer contributions, vesting period (in years)	5 years
ScanSource Defined Contribution Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contribution per participant	$ 800
Defined benefit plan, employer contributions, vesting period (in years)	5 years
Employer matching contribution, percent of participant's contribution	50.00%
POS Portal's Defined Contribution Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer matching contribution, percent of participant's contribution	100.00%
Employer matching contribution, percent of employees' gross pay	4.00%