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SCHEDULE OF SUPPLEMENTAL BALANCE SHEET INFORMATION RELATED TO LEASES (Details) (Parenthetical) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Leases
Operating lease ROU assets, cost	$ 523,028	$ 447,497
Operating lease, right of use asset, accumulated amortization	450,773	427,607
Finance lease ROU assets, cost	28,898	28,898
Finance lease ROU assets, accumulated amortization	$ 14,704	$ 13,104

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- References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

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- Definition

Finance lease right of use asset accumulated amortization expense.

+ References

No definition available.

+ Details

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Namespace Prefix:	GRNQ_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Definition

Finance lease right of use asset cost.

+ References

No definition available.

+ Details

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Namespace Prefix:	GRNQ_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Definition

Operating lease right of use asset accumulated amortization expense.

+ References

No definition available.

+ Details

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Namespace Prefix:	GRNQ_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Definition

Operating lease right of use asset cost.

+ References

No definition available.

+ Details

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Namespace Prefix:	GRNQ_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant