XML 60 R49.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Business Combinations - Schedule of Fair Value of Assets Acquired and Liabilities (Details) (Parenthetical) - USD ($) | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2017 | Apr. 28, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015
Goodwill |  | $ 2,686,650 | $ (1,213,921) | $ 1,472,729 | $ 1,402,316 | $ (1,472,729) | [1]
F&A [Member] |  |  |  |  |  |  |
Goodwill | [1] |  |  |  |  | (1,211,864) |
Number of common stock shares for purchase consideration |  | 2,080,200 |  |  |  |  |
Shares issued price per share |  | $ 0.80 |  |  |  |  |
Yabez [Member] |  |  |  |  |  |  |
Goodwill | [1] |  |  |  |  | $ (260,865) |
Number of common stock shares for purchase consideration |  | 486,171 |  |  |  |  |
Shares issued price per share |  | $ 0.80 |  |  |  |  |
Billion Sino Holdings Limited [Member] |  |  |  |  |  |  |
Goodwill |  |  | $ (1,120,356) |  |  |  |
Number of common stock shares for purchase consideration |  | 340,645 |  |  |  |  |
Shares issued price per share |  | $ 3.50 |  |  |  |  |
[1] | The goodwill was adjusted from $1,402,316 in 2015 to $1,472,729 in 2016 due to finalization of the purchase price allocation and valuation of the acquired entities.

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares of stock issued during the period pursuant to acquisitions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesAcquisitions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=GRNQ_FAndAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=GRNQ_YabezMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=GRNQ_BillionSinoHoldingsLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |