v3.26.1
OTHER RECEIVABLES (Details Narrative) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Other Receivables
Litigation receivables
$ 578,890
$ 578,890
Allowance for loss on litigation receivables
$ 289,445
$ 289,445
X
- Definition
Allowance for loss on litigation receivables.
+ References
No definition available.
+ Details
Name:
KUST_AllowanceForLossOnLitigationReceivables
Namespace Prefix:
KUST_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
KUST_DisclosureOtherReceivablesAbstract
Namespace Prefix:
KUST_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Litigation receivables.
+ References
No definition available.
+ Details
Name:
KUST_LitigationReceivables
Namespace Prefix:
KUST_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
instant