v3.26.1
NOTES RECEIVABLE (Details Narrative) - USD ($)
Mar. 31, 2026
Dec. 31, 2025
Receivables [Abstract]
Credit losses
$ 0
$ 0
X
- References
No definition available.
+ Details
Name:
grin_CreditLosses
Namespace Prefix:
grin_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_ReceivablesAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration