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Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Millions		12 Months Ended
	Jul. 01, 2017	Jun. 30, 2018
Accounting standards update 2016- 09
Accounting Standards
Adjustment to retained earnings	$ 0.1
Accounting standards update 2014-09
Accounting Standards
School year period that revenues had previously been recognized over		10 months

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Amount of increase (decrease) in additional paid in capital (APIC) resulting from a tax benefit (deficiency) associated with an share-based compensation plan other than an employee stock ownership plan (ESOP).

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