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Business Combinations - Schedule of Fair Value of Assets Acquired and Liabilities (Details) - USD ($) | Jun. 30, 2017 | Apr. 28, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015
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Plant and equipment |  |  |  |  |  |  | $ 4,296 |
Accounts receivable |  |  |  |  |  |  | 143,013 |
Prepayments, deposits and other receivables |  |  |  |  |  |  | 11,946 |
Cash and cash equivalents |  |  | $ 132,451 |  |  |  | 50,570 |
Accounts payable and accrued liabilities |  |  |  |  |  |  | (168,666) |
Intangible assets |  |  | 94,057 |  |  |  | 624,500 |
Goodwill |  | $ (2,686,650) | 1,213,921 |  | $ (1,472,729) | $ (1,402,316) | 1,472,729 | [1]
Rental and utility deposit |  |  | 3,481 |  |  |  |  |
Bank fixed deposit |  |  | 12,903 |  |  |  |  |
Amount due to a director |  |  | (16,597) |  |  |  |  |
Accrued expenses |  |  | (184,504) |  |  |  |  |
Deferred tax liabilities |  |  | (15,519) |  |  |  |  |
Fair value of BSHL, F&A and Yabez, respectively |  |  | 1,240,193 |  |  |  | 2,138,388 |
Non-controlling interest |  |  | (47,935) |  |  |  | (85,291) |
Total purchase considerations |  |  | 1,192,258 | [2] |  |  | 2,053,097 | [3]
F&A [Member] |  |  |  |  |  |  |  |
Plant and equipment |  |  |  |  |  |  | 1,270 |
Accounts receivable |  |  |  |  |  |  | 103,578 |
Prepayments, deposits and other receivables |  |  |  |  |  |  | 5,467 |
Cash and cash equivalents |  |  |  |  |  |  | 21,520 |
Accounts payable and accrued liabilities |  |  |  |  |  |  | (129,039) |
Intangible assets |  |  |  |  |  |  | 449,500 |
Goodwill | [1] |  |  |  |  |  | 1,211,864 |
Fair value of BSHL, F&A and Yabez, respectively |  |  |  |  |  |  | 1,664,160 |
Non-controlling interest |  |  |  |  |  |  |  |
Total purchase considerations | [3] |  |  |  |  |  | 1,664,160 |
Yabez [Member] |  |  |  |  |  |  |  |
Plant and equipment |  |  |  |  |  |  | 3,026 |
Accounts receivable |  |  |  |  |  |  | 39,435 |
Prepayments, deposits and other receivables |  |  |  |  |  |  | 6,479 |
Cash and cash equivalents |  |  |  |  |  |  | 29,050 |
Accounts payable and accrued liabilities |  |  |  |  |  |  | (39,627) |
Intangible assets |  |  |  |  |  |  | 175,000 |
Goodwill | [1] |  |  |  |  |  | 260,865 |
Fair value of BSHL, F&A and Yabez, respectively |  |  |  |  |  |  | 474,228 |
Non-controlling interest |  |  |  |  |  |  | (85,291) |
Total purchase considerations | [3] |  |  |  |  |  | $ 388,937 |
Billion Sino Holdings Limited [Member] |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  | 132,451 |  |  |  |  |
Intangible assets |  |  | 94,057 |  |  |  |  |
Goodwill |  |  | 1,120,356 |  |  |  |  |
Rental and utility deposit |  |  | 3,481 |  |  |  |  |
Bank fixed deposit |  |  | 12,903 |  |  |  |  |
Amount due to a director |  |  | (16,597) |  |  |  |  |
Accrued expenses |  |  | (90,939) |  |  |  |  |
Deferred tax liabilities |  |  | (15,519) |  |  |  |  |
Fair value of BSHL, F&A and Yabez, respectively |  |  | 1,240,193 |  |  |  |  |
Non-controlling interest |  |  | (47,935) |  |  |  |  |
Total purchase considerations | [2] |  | 1,192,258 |  |  |  |  |
Gushen Holding Limited [Member] |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |
Goodwill |  |  | 93,565 |  |  |  |  |
Rental and utility deposit |  |  |  |  |  |  |  |
Bank fixed deposit |  |  |  |  |  |  |  |
Amount due to a director |  |  |  |  |  |  |  |
Accrued expenses |  |  | (93,565) |  |  |  |  |
Deferred tax liabilities |  |  |  |  |  |  |  |
Fair value of BSHL, F&A and Yabez, respectively |  |  |  |  |  |  |  |
Non-controlling interest |  |  |  |  |  |  |  |
Total purchase considerations | [2] |  |  |  |  |  |  |
[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.
[2] | Total purchase consideration consisted of 340,645 shares of GRNQ common stock, which was priced at $3.50 per share, for BSHL.
[3] | Total purchase consideration consisted of 2,080,200 and 486,171 shares of GRNQ common stock, which was priced at $0.80 per share, for F&A and Yabez, respectively.

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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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