XML 94 R57.htm IDEA: XBRL DOCUMENT v3.20.1

Real Estate Held For Sale (Details Narrative)	12 Months Ended
	Dec. 31, 2019 USD ($) Units	Dec. 31, 2018 USD ($) Units
Real Estate [Abstract]
Real estate held for sale	$ 2,396,238	$ 2,530,183
Number of units sold in real estate | Units	1	8
Sale of properties	$ 189,522	$ 1,368,220
Cost of properties sold	120,965	900,457
Cost of sale of property, others	16,240	$ 119,333
Real estate held for sale pledged to lender as security collateral for loan	$ 385,158

X

- Definition

Cost of real estate properties sold.

+ References

No definition available.

+ Details

Name:	GRNQ_CostOfRealEstatePropertiesSold
Namespace Prefix:	GRNQ_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Cost of Sale of Property, others.

+ References

No definition available.

+ Details

Name:	GRNQ_CostOfSaleOfPropertyOthers
Namespace Prefix:	GRNQ_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Sale of real estate properties.

+ References

No definition available.

+ Details

Name:	GRNQ_SaleOfRealEstate
Namespace Prefix:	GRNQ_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The fair value, as of the date of each statement of financial position presented, of real estate which is owned but transferred to serve as collateral for the payment of the related debt obligation, and that is reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge it.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728

+ Details

Name:	us-gaap_PledgedAssetsSeparatelyReportedRealEstatePledgedAsCollateralAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_RealEstateAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(f))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

Name:	us-gaap_RealEstateHeldforsale
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant