FAIR VALUE MEASUREMENTS - Additional information (Details) - USD ($)	12 Months Ended
Jun. 30, 2019	Jun. 30, 2018
FAIR VALUE MEASUREMENTS
Proceeds from Sale of Other Investments	$ 103,000	$ 131,000

Amount of cash inflow from the sale of investments classified as other.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromSaleOfOtherInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration