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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Credit Risk and Concentration (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Credit Risk and Concentration
Revenue, Practical Expedient, Financing Component [true false]	true
Cash and cash equivalents	$ 80,613	$ 76,102
Foreign subsidiaries | Cash and cash equivalents | Cash and Cash Equivalents Concentration Risk
Credit Risk and Concentration
Concentration (as a percent)	71.00%	63.00%
One customer | Accounts receivable | Customer Concentration Risk
Credit Risk and Concentration
Concentration (as a percent)		13.00%

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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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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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