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Business Combinations - Schedule of Fair Value of Assets Acquired and Liabilities (Details) - USD ($) | Mar. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015
--- | --- | --- | --- | ---
Plant and equipment |  |  |  |  | $ 4,296 |
Accounts receivable |  |  |  |  | 143,013 |
Prepayments, deposits and other receivables |  |  |  |  | 11,946 |
Cash and cash equivalents |  |  |  |  | 50,570 |
Accounts payable and accrued liabilities |  |  |  |  | (168,666) |
Intangible assets |  |  |  |  | 624,000 |
Goodwill |  | $ 1,472,729 | $ 1,472,729 | $ 1,402,316 | 1,472,729 | [1]
Provisional fair value of F&A and Yabez, respectively |  |  |  |  | 2,138,388 |
Non-controlling interest |  |  |  |  | (85,291) |
Total purchase considerations | [2] |  |  |  | 2,053,097 |
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 |
Provisional fair value of F&A and Yabez, respectively |  |  |  |  | 1,664,160 |
Non-controlling interest |  |  |  |  |  |
Total purchase considerations | [2] |  |  |  | 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 |
Provisional fair value of F&A and Yabez, respectively |  |  |  |  | 474,228 |
Non-controlling interest |  |  |  |  | (85,291) |
Total purchase considerations | [2] |  |  |  | $ 388,937 |
[1] | The goodwill was adjusted from $1,402,316 in 2015 to $1,472,729 in 2016 due to finalize the purchase price allocation and valuation of the acquired entities.
[2] | Total purchase considerations were consisted of 2,080,200 and 486,171 shares of GRNQ common stock, which is priced at 0.80 per share, for F&A and Yabez respectively.

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- Definition This element represents the fair value of the noncontrolling interest in the acquiree 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + 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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- Definition Amount of other assets expected to be realized or consumed before 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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- 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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- Definition Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed 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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- Definition Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, 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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- Definition Amount of liabilities assumed 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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- Definition The amount of property, plant, and equipment recognized as of 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464 + Details
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- Definition Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree. + 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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