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Summary of Significant Accounting Policies - Concentration Risk and Inventories (Details) $ in Thousands		12 Months Ended
	Jun. 09, 2016	Jun. 30, 2018 USD ($) contract	Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract
Concentration of revenues
Accounts receivable		$ 176,319	$ 192,205
Deposits and other assets		36,669	6,057
Inventories
Increase (decrease) in provision for excess and obsolete inventory		1,200	(300)	$ 700
Excess and obsolete inventory reserve		$ 3,500	$ 2,300
Revenue | Customer Concentration Risk
Concentration of revenues
Number of customers with concentration | contract		0	0	1
Agora
Concentration of revenues
Time period for customer to repay outstanding receivables	2 years
Accounts receivable		$ 28,700	$ 25,400	$ 29,500
Settlement repayment period		4 years
Deposits and other assets		$ 23,200
Managed Schools | Revenue | Customer Concentration Risk
Concentration of revenues
Concentration risk (as a percent)		85.00%	83.00%	82.00%

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Represents the number of customers in which the entity has a concentration of risk.

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Time period for customer to repay outstanding receivables.

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of valuation reserve for inventory.

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Amount of noncurrent assets classified as other.

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