Note 8 - Other Assets - Components of Other Current Assets (Details) - USD ($)	Sep. 30, 2018	Jun. 30, 2018
Prepaid expenses and deposits	$ 305,420	$ 358,869
Other current assets	2,000	15,748
Total	$ 307,420	$ 374,617

Amount of asset related to consideration paid in advance for costs that provide economic benefits and carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied within a future period of one year or the normal operating cycle, if longer.

No definition available.

Name:	cncg_PrepaidExpenseAndDepositsAssetsCurrent
Namespace Prefix:	cncg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant