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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Credit Risk and Concentration (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Credit Risk and Concentration
Cash and cash equivalents	$ 96,316	$ 84,814
Foreign subsidiaries | Cash and cash equivalents | Cash and Cash Equivalents Concentration Risk
Credit Risk and Concentration
Concentration (as a percent)	87.00%	86.00%
SAT | Revenue | Customer Concentration Risk
Credit Risk and Concentration
Concentration (as a percent)			12.00%

X

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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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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