It represents the total consideration for acquisition of business.

No definition available.

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Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

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- Definition

Face amount or stated value per share of common stock.

+ References

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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- Definition

Number of new stock issued during the period.

+ 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(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Organization and description of business (Additional Information) (Details) $ / shares in Units, $ in Millions		1 Months Ended							12 Months Ended
	Nov. 13, 2017 $ / shares shares	Dec. 22, 2017 USD ($) shares	Nov. 15, 2017 shares	Apr. 28, 2017 USD ($) shares	Apr. 17, 2017 shares	Mar. 20, 2017 shares	Mar. 31, 2016	Dec. 28, 2015 USD ($)	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 22, 2017 HKD ($)	Dec. 31, 2016 $ / shares shares	Aug. 10, 2016 shares	Jan. 19, 2016 $ / shares
Noncontrolling Interest, Ownership Percentage by Parents								100.00%
Payments to Acquire Businesses, Gross \| $								$ 52,000,000	$ 11,000,000
Business Combination Consideration Transferred							1,162,305 post-split shares	consideration of $52 million in cash, plus up to 19.9% or 3.4 million newly issued ordinary shares (the Shares) of the Company
Common Stock Shares Authorized									50,000,000		50,000,000	12,500,000
Common stock, par value \| $ / shares	$ 0.004								$ 0.004		$ 0.004
Shares issued for secondary offering, shares	2,314,500		434,783		434,783	117,361
Minimum [Member]
Common stock, par value \| $ / shares													$ 0.001
Maximum [Member]
Common stock, par value \| $ / shares													$ 0.004
Giant Connection Limited [Member]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned		$ 2,400,000								$ 19.6
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		2,220,283
Hong Kong [Member]
Payments to Acquire Businesses, Gross \| $				$ 32,600,000
Shares issued for secondary offering, shares				1,500,000