Fair Value Measurements - Schedule of Fair Value Measurements on Non-recurring Basis (Details) - USD ($)	9 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Other non-marketable investments	$ 394,000		$ 612,000
Net loss	(103,000)	$ (98,000)
Level 3 [Member]
Other non-marketable investments	$ 394,000		$ 612,000

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant