XML 64 R55.htm IDEA: XBRL DOCUMENT
v3.20.1

Property and Equipment, Net (Details Narrative) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Depreciation expense, classify as operating expenses | $ 138,194 | $ 143,359
Office leasehold pledged to banks as collateral security |  | $ 1,034,037
Office Leasehold [Member] |  |
Remaining life term of property, plant and equipment | 27 years |
Office Leasehold [Member] | Land [Member] |  |
Property, plant and equipment, useful life | 50 years |
Remaining life term of property, plant and equipment | 25 years |

X
- Definition Office leasehold pledged to banks as collateral security. + References No definition available. + Details
Name: | GRNQ_OfficeLeaseholdPledgedToBanksAsCollateralSecurity
Namespace Prefix: | GRNQ_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Remaining life term of property, plant and equipment. + References No definition available. + Details
Name: | GRNQ_RemainingLifeTermOfPropertyPlantAndEquipment
Namespace Prefix: | GRNQ_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
Name: | us-gaap_Depreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=GRNQ_OfficeLeaseholdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_LandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |