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Redeemable convertible preferred shares (Tables) | 12 Months Ended
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Dec. 31, 2014
Subscription Rights [Member] |
Assumptions to Estimated Fair Value of Warrants | The major assumptions used in calculating the fair value of the Subscription Rights include:
|  | March 5, 2014 |  |  | April 24, 2014 |
Spot price(1) |  |  | 3.31 - 4.65 |  |  |  | 3.39 - 4.64 |
Risk-free interest rate(2) |  |  | 0.04% |  |  |  | 0.02% |
Volatility rate(3) |  |  | 38.12% |  |  |  | 42.74% |
Dividend yield(4) |  |  | — |  |  |  | — |
(1) | Spot price – based on the fair value of 100 percent equity interest of the Company which is allocated to preferred shares and common shares of the Company as at the valuation date under different scenarios. The probability of the occurrence of an IPO is assumed to be 80%, the probability of the occurrence of a liquidation event is assumed to be 10% and the probability of the occurrence of a redemption event is assumed to be 10%.
(2) | Risk-free interest rate – based on the US Treasury Bond & Notes BFV curve from Bloomberg as at the valuation date.
(3) | Volatility – based on the average historical volatility of the comparable companies from Bloomberg as at the valuation date.
(4) | The Company has no history or expectation of paying dividends on its common shares.
Series E Preferred Shares [Member] | Convertible Redeemable Preferred Shares [Member] |
Summary of Redeemable Convertible Preferred Shares | Since the warrants and the subscription rights are classified as liability, the sales proceeds are first allocated to the warrants and the subscription rights’ full fair value (not relative fair value) and the residual amount of the sales process is allocated to the Series E Tranche 1 Preferred Shares to calculate the beneficial conversion feature.
(In thousands) |  | December 31, 2014 |
Beginning balance |  |  | — |
Addition |  |  | 275,314 |
Exercise of Series E subsequent sale rights |  |  | 28,568 |
BCF upon Series E |  |  | (53,486 | )
Amortisation of BCF of Series E |  |  | 4,139 |
Accretion of Series E to convertible redeemable preferred shares redemption value |  |  | 12,754 |
Acceleration of amortization of BCF of Series E upon IPO |  |  | 49,346 |
Deemed dividend to preferred shareholders upon IPO |  |  | 27,396 |
Converted to common shares upon IPO |  |  | (344,031 | )
Ending balance |  |  | — |
Series D Preferred Stock [Member] | Convertible Redeemable Preferred Shares [Member] |
Summary of Redeemable Convertible Preferred Shares | The fair value gain of USD2,922 thousand was recorded for the year ended December 31, 2014 as other income. As a result, 10,581,726 common shares were issued, and the balance of Series D preferred shares was transferred to common shares and additional paid-in capital on that date.
|  | Years ended December 31, |
(In thousands) |  | 2013 |  |  | 2014 |
Beginning balance |  |  | 35,990 |  |  |  | 40,290 |
Deemed dividend to Series D shareholder from its modification |  |  | — |  |  |  | 279 |
Accretion of Series D to convertible redeemable preferred shares redemption value |  |  | 4,300 |  |  |  | 1,870 |
Repurchase of preferred shares |  |  | — |  |  |  | (15,003 | )
Deemed dividend to preferred shareholders upon IPO |  |  | — |  |  |  | 4,008 |
Converted to common shares upon IPO |  |  | — |  |  |  | (31,444 | )
Ending balance |  |  | 40,290 |  |  |  | — |
Series D Warrants [Member] |
Assumptions to Estimated Fair Value of Warrants | The major assumptions used in calculating the fair value of the Series D warrants include:
|  | December 31, 2013 |  |  | February 6, 2014 |
Spot price(1) |  |  | 4.36 |  |  |  | 4.47 |
Risk-free interest rate(2) |  |  | 0.05% |  |  |  | 0%* |
Volatility rate(3) |  |  | 30.33% |  |  |  | 0%* |
Dividend yield(4) |  |  | — |  |  |  | — |
* | Given that the maturity date of Series D warrant was February 6, 2014, the volatility rate and risk-free interest rate did not affect the valuation of the warrant on February 6, 2014.
Series E Warrants [Member] |
Assumptions to Estimated Fair Value of Warrants | The major assumptions used in calculating the fair value of the Series E warrants include:
|  | March 5, 2014 |
Spot price(1) |  |  | 3.31 - 4.65 |
Risk-free interest rate(2) |  |  | 0.04% - 0.12% |
Volatility rate(3) |  |  | 38.39% - 38.81% |
Dividend yield(4) |  |  | — |
(1) | Spot price – based on the fair value of 100 percent equity interest of the Company which was allocated to preferred shares and common shares of the Company as at the valuation date under different scenarios. For the valuation on March 5, 2014 and March 31, 2014, the probability of the occurrence of an IPO is assumed to be 80%, the probability of the occurrence of a liquidation event is assumed to be 10% and the probability of the occurrence of a redemption event is assumed to be 10%
(2) | Risk-free interest rate – based on the US Treasury Bond & Notes BFV curve from Bloomberg as at the valuation date.
(3) | Volatility – based on the average historical volatility of the comparable companies from Bloomberg as at the valuation date.
(4) | The Company has no history or expectation of paying dividends on its common shares.
Series E Warrants [Member] | Convertible Redeemable Preferred Shares [Member] |
Assumptions to Estimated Fair Value of Warrants | The major assumptions used in calculating the fair value of the Series E warrants include:
|  | March 5, 2014
Spot price(1) |  | 4.50 - 4.65
Risk-free interest rate(2) |  | 0.12%
Volatility rate(3) |  | 38.81%
Dividend yield(4) |  | —
(1) | Spot price – based on the fair value of 100 percent equity interest of the Company which is allocated to preferred shares and common shares of the Company as at the valuation date under different scenarios. The probability of the occurrence of an IPO is assumed to be 80%, the probability of the occurrence of a liquidation event is assumed to be 10% and the probability of the occurrence of a redemption event is assumed to be 10%.
(2) | Risk-free interest rate – based on the US Treasury Bond & Notes BFV curve from Bloomberg as at the valuation date.
(3) | Volatility – based on the average historical volatility of the comparable companies from Bloomberg as at the valuation date.
(4) | The Company has no history or expectation of paying dividends on its common shares.

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- Definition Tabular disclosure of the inputs and valuation techniques used to measure fair value, and a discussion of changes in valuation techniques and related inputs, if any, applied during the period to each separate class of assets, liabilities, and financial instruments classified in shareholders' equity that are measured on a recurring and/or nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 28 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (27) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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