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Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock Option Summary |
The following table summarizes information regarding stock options as at December 31, 2013:
|  | Options outstanding |  |  | Options exercisable
|  |  |  |  | Weighted average |  |  |  |  |  | Weighted average
|  |  |  |  | remaining |  |  |  |  |  | remaining
Exercise price |  | Number |  |  | contractual life |  |  | Number |  |  | contractual life
US$ |  | of options |  |  | (in years) |  |  | of options |  |  | (in years)
18.82 |  |  | 42,500 |  |  |  | 4.97 |  |  |  | 42,500 |  |  |  | 4.97 |
15.28 |  |  | 230,250 |  |  |  | 6.70 |  |  |  | - |  |  |  | - |
|  |  | 272,750 |  |  |  |  |  |  |  | 42,500 |  |  |
Stock Option Activity |
The stock option activity under the abovementioned plans is as follows:
|  |  |  |  |  |  |  | Weighted |
|  |  |  |  | Weighted |  |  | average |
|  | Number |  |  | average |  |  | grant date |
|  | of options |  |  | exercise price |  |  | fair value |
|  |  |  |  | US$ |  |  | US$ |
Balance at January 1, 2011 |  |  | 305,825 |  |  |  |  |  |  |
Exercised |  |  | (45,400 | ) |  |  | 3.62 |  |  |  | 1.75 |
Forfeited |  |  | (3,000 | ) |  |  | 16.32 |  |  |  | 7.54 |
Balance at December 31, 2011 |  |  | 257,425 |  |  |  |  |  |  |  |  |
Granted |  |  | 240,000 |  |  |  | 15.28 |  |  |  | 6.54 |
Exercised |  |  | (82,338 | ) |  |  | 3.35 |  |  |  | 1.81 |
Forfeited |  |  | (2,000 | ) |  |  | 15.28 |  |  |  | 6.54 |
Balance at December 31, 2012 |  |  | 413,087 |  |  |  |  |  |  |  |  |
Exercised |  |  | (132,587 | ) |  |  | 14.28 |  |  |  | 6.61 |
Forfeited |  |  | (7,750 | ) |  |  | 15.28 |  |  |  | 6.54 |
Balance at December 31, 2013 |  |  | 272,750 |  |  |  |  |  |  |  |  |
Exercisable at December 31, 2013 |  |  | 42,500 |  |  |  |  |  |  |
Summary of Allocation of the Stock-Based Compensation Expenses |
| During 2011, 2012 and 2013, the Company recorded share-based compensation expenses. The following summarizes the allocation of the stock-based compensation expenses:
|  | Year ended December 31 |
|  | 2011 |  |  | 2012 |  |  | 2013 |
|  | US$ thousands |  |  | US$ thousands |  |  | US$ thousands |
Cost of sales |  |  | 24 |  |  |  | 46 |  |  |  | 103 |
Research and development costs |  |  | 96 |  |  |  | 130 |  |  |  | 193 |
Selling and marketing expenses |  |  | 134 |  |  |  | 159 |  |  |  | 177 |
General and administrative expenses |  |  | 183 |  |  |  | 209 |  |  |  | 195 |
|  |  | 437 |  |  |  | 544 |  |  |  | 668 |
$3.82 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Fair Value Assumptions |
The Company recognizes compensation expenses on these options based on estimated grant date fair value using the Monte Carlo option-pricing model with the following assumptions:
Average Risk-free interest rate (a) | 3.73%
Expected dividend yield | 0.0%
Average expected volatility (b) | 112.42%
Termination rate | 11%
Suboptimal rate (c) | 3.45
| (a) | Risk-free interest rate represents risk free US$ zero-coupon US Government Bonds at time of grant.
| (b) | Expected average volatility represents a weighted average standard deviation rate for the price of the Company's ordinary shares on the NASDAQ National Market.
| (c) | Suboptimal rate represents the multiple of the increase in the market share price on the day of grant of the option which, should it come to pass, will lead to exercise of the option by the employee. It is the average suboptimal rate of the Company and similar companies.
$18.82 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Fair Value Assumptions |
| The Company recognizes compensation expenses on these options based on estimated grant date fair value using the Binomial option-pricing model with the following assumptions:
Average Risk-free interest rate (a) | 3.00%
Expected dividend yield | 0.0%
Average expected volatility (b) | 82.64%
Termination rate | 9%
Suboptimal rate (c) | 3.45
| (a) | Risk-free interest rate represents risk free US$ zero-coupon US Government Bonds at time of grant.
| (b) | Expected average volatility represents a weighted average standard deviation rate for the price of the Company's ordinary shares on the NASDAQ National Market.
| (c) | Suboptimal rate represents the multiple of the increase in the market share price on the day of grant of the option which, should it come to pass, will lead to exercise of the option by the employee. It is the average suboptimal rate of the Company and similar companies.
$15.28 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Fair Value Assumptions |
The Company recognizes compensation expenses on these options based on estimated grant date fair value using the Binomial option-pricing model with the following assumptions:
Average Risk-free interest rate (a) | 1.33 %
Expected dividend yield | 0.0%
Average expected volatility (b) | 64.71 %
Termination rate | 9%
Suboptimal rate (c) | 3.2
| (a) | Risk-free interest rate represents risk free US$ zero-coupon US Government Bonds at time of grant.
| (b) | Expected average volatility represents a weighted average standard deviation rate for the price of the Company's ordinary shares on the NASDAQ National Market.
| (c) | Suboptimal rate represents the multiple of the increase in the market share price on the day of grant of the option which, should it come to pass, will lead to exercise of the option by the employee. It is the average suboptimal rate of the Company and similar companies.

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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 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 4: 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=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&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 stock options, including, but not limited to: (a) expected term of share options and similar instruments, (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=6415400&loc=d3e5070-113901 + Details
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