XML 48 R37.htm IDEA: XBRL DOCUMENT v3.8.0.1

Real Estate Held For Sale (Details Narrative) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Real Estate [Abstract]
Real estate held for sale	$ 3,430,641	$ 3,430,641
Real estate held for sale pledged as security collateral for loans	$ 645,161

X

- Definition

Real estate held for sale pledged as security collateral for loans.

+ References

No definition available.

+ Details

Name:	GRNQ_RealEstateHeldForSalePledgedAsSecurityCollateralForLoans
Namespace Prefix:	GRNQ_
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://www.xbrl.org/2003/role/presentationRef
-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=6879938&loc=d3e572229-122910

+ Details

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