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Share-based compensation (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Schedule of Share Options Activity | Details of share options activity during the years ended December 31, 2017, 2016 and 2015 were as follows:
|  | Number of options |  |  | Weighted average exercise price per share |  |  | Weighted average remaining contractual term |  |  | Aggregate intrinsic value |
Balance as of January 1, 2015 |  |  | - |  |  | $ | - |  |  |  | - |  |  | $ | - |
Additions as a result of the reverse acquisition |  |  | 407,000 |  |  | $ | 9.21 |  |  |  |  |  |  |  |  |
Granted |  |  | 85,000 |  |  | $ | 10.39 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (30,000 | ) |  | $ | 7.85 |  |  |  |  |  |  |  |  |
Outstanding as of December 31, 2015 |  |  | 462,000 |  |  | $ | 9.52 |  |  | 5.3 years |  |  | $ | - |
Granted |  |  | 30,000 |  |  | $ | 5.04 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (40,000 | ) |  | $ | 8.45 |  |  |  |  |  |  |  |  |
Expired |  |  | (100,000 | ) |  | $ | 6.02 |  |  |  |  |  |  |  |  |
Outstanding as of December 31, 2016 |  |  | 352,000 |  |  | $ | 10.25 |  |  | 4.4 years |  |  | $ | - |
Expired |  |  | (130,000 | ) |  | $ | 6.25 |  |  |  |  |  |  |  |  |
Outstanding as of December 31, 2017 |  |  | 222,000 |  |  | $ | 12.59 |  |  | 5.4 years |  |  | $ | - |
Options vested and expected to vest as of December 31, 2017 |  |  | 222,000 |  |  | $ | 12.59 |  |  | 5.4 years |  |  | $ | - |
Options exercisable as of December 31, 2017 |  |  | 174,500 |  |  | $ | 10.05 |  |  | 4.7 years |  |  | $ | - |
Unvested Balance of Options | The activity of unvested balance of options is shown below for the years ended December 31, 2017, 2016 and 2015:
|  | Number of options |  |  | Weighted average exercise price per share |  |  | Weighted average remaining contractual term |
Unvested as of January 1, 2015 |  |  | - |  |  | $ | - |  |  |  | - |
Additions as a result of the reverse acquisition |  |  | 63,334 |  |  | $ | 6.82 |  |  |  |  |
Granted |  |  | 85,000 |  |  | $ | 10.39 |  |  |  |  |
Vested |  |  | (11,667 | ) |  | $ | 8.10 |  |  |  |  |
Forfeited |  |  | (10,000 | ) |  | $ | 7.85 |  |  |  |  |
Unvested as of December 31, 2015 |  |  | 126,667 |  |  | $ | 9.02 |  |  | 8.1 years |
Granted |  |  | 30,000 |  |  | $ | 5.04 |  |  |  |  |
Vested |  |  | (47,917 | ) |  | $ | 7.16 |  |  |  |  |
Forfeited |  |  | (40,000 | ) |  | $ | 8.45 |  |  |  |  |
Unvested as of December 31, 2016 |  |  | 68,750 |  |  | $ | 8.91 |  |  | 8.9 years |
Vested |  |  | (21,250 | ) |  | $ | 8.80 |  |  |  |  |
Unvested as of December 31, 2017 |  |  | 47,500 |  |  | $ | 8.96 |  |  | 7.9 years |
Schedule of Estimated Grant Date Fair Value of Share Options, Using Black-Scholes Option-Pricing Model | We estimate the fair value of each stock option on the date of grant using a Black-Scholes option-pricing model applying the following assumptions, and amortize the fair value to expense over the option’s vesting period using the straight-line attribution approach for employees and non-employee directors, for the years ended December 31, 2016 and 2015. There was no grant of share options for the year ended December 31, 2017.
|  | Year Ended December 31,
|  | 2016 |  | 2015
Expected term (in years) |  | 4 |  | 4
Risk-free interest rate |  | 1.71% |  | 1.57% - 1.66%
Expected volatility |  | 99.27% |  | 20.97% - 128.66%
Expected dividend yield |  | 0.00% |  | 0.00%
Schedule of Restricted Share Units and Restricted Stock Activity | Details of unvested RSUs and restricted stock activity during the years ended December 31, 2017, 2016 and 2015 were as follows:
|  | Number of units |  |  | Weighted average grant-date fair value |
Unvested as of January 1, 2015 |  |  | 2,960,000 |  |  | $ | 2.00 |
Additions as a result of the reverse acquisition |  |  | 416,800 |  |  | $ | 4.81 |
Granted |  |  | 13,890,500 |  |  | $ | 9.16 |
Vested and delivered |  |  | (382,300 | ) |  | $ | 5.55 |
Vested not delivered (1) |  |  | (3,085,000 | ) |  | $ | 8.36 |
Forfeited |  |  | (79,000 | ) |  | $ | 5.78 |
Unvested as of December 31, 2015 |  |  | 13,721,000 |  |  | $ | 7.78 |
Granted |  |  | 1,339,758 |  |  | $ | 4.17 |
Vested and delivered |  |  | (1,074,327 | ) |  | $ | 3.28 |
Withheld as treasury stock (2) |  |  | (360,235 | ) |  | $ | 1.52 |
Vested not delivered (1) |  |  | (1,022,667 | ) |  | $ | 2.59 |
Forfeited |  |  | (196,500 | ) |  | $ | 7.16 |
Unvested as of December 31, 2016 |  |  | 12,407,029 |  |  | $ | 8.40 |
Granted |  |  | 2,732,000 |  |  | $ | 5.61 |
Vested and delivered |  |  | (3,659,520 | ) |  | $ | 8.29 |
Withheld as treasury stock (2) |  |  | (192,288 | ) |  | $ | 8.48 |
Vested not delivered (1) |  |  | (2,568,318 | ) |  | $ | 3.43 |
Forfeited |  |  | (567,998 | ) |  | $ | 5.65 |
Unvested as of December 31, 2017 (3) |  |  | 8,150,905 |  |  | $ | 9.27 |
(1) | Vested not delivered represent the vested RSUs with deferred delivery at a future time. As of December 31, 2017, the cumulative shares of RSUs included in “vested not delivered” were 6,675,985.
(2) | As discussed in Note 13 above, the increase in treasury stock was due to shares withheld to pay statutory withholding taxes upon the vesting of RSUs during related periods, among which, 200,000 shares of treasury stock were subsequently sold to an investor in 2016. As of December 31, 2017, the cumulative shares withheld as treasury stock were 352,523.
(3) | Among the unvested shares as of December 31, 2017, there were 150,000 shares of unvested restricted stock, which were included in the issued and outstanding shares of the Company’s common stock as of December 31, 2017.
Schedule of Share-based Compensation | The share-based compensation for the Company’s share options, RSUs and restricted stock were allocated to the following accounts in the consolidated financial statements for the years ended December 31, 2017, 2016 and 2015:
|  | Year Ended December 31, |
(In thousands) |  | 2017 |  |  | 2016 |  |  | 2015 |
Sales and marketing expenses |  | $ | 2,873 |  |  | $ | 2,340 |  |  | $ | 310 |
General and administrative expenses |  |  | 31,123 |  |  |  | 26,909 |  |  |  | 33,850 |
Discontinued operations |  |  | - |  |  |  | - |  |  |  | 456 |
|  |  | 33,996 |  |  |  | 29,249 |  |  |  | 34,616 |
Capitalized in intangible assets |  |  | 1,296 |  |  |  | 1,154 |  |  |  | 363 |
Total |  | $ | 35,292 |  |  | $ | 30,403 |  |  | $ | 34,979 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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