Recent Accounting Guidance (Details) $ in Thousands	12 Months Ended
Jun. 30, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of ASU 2016-01	$ (318)
Accumulated Other Comprehensive Income (Loss) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of ASU 2016-01	$ (318)

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

No definition available.

Name:	ccur_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets
Namespace Prefix:	ccur_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration