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Shareholders' Equity (Details 4) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Information by exercise price range |  |
Options Outstanding, Number Outstanding (in shares) | 1,251,442 |
Options Outstanding, Weighted Average Remaining Contractual Life | 7 years 10 months 2 days |
Options Outstanding, Weighted Average Exercise Price Per Share | $ 2.72 |
Options Exercisable, Number Exercisable (in shares) | 686,998 | 572,552
Options Exercisable, Weighted Average Exercise Price Per Share | $ 3.22 |
Stock option disclosures |  |
Weighted average remaining life of options outstanding | 7 years 10 months 2 days |
Aggregate intrinsic value of options outstanding (in dollars) | $ 722,000 |
Weighted average remaining life of options exercisable | 7 years 1 month 20 days |
Aggregate intrinsic value of options exercisable (in dollars) | 275,000 |
Weighted average grant-date fair value of options granted (in dollars per share) | $ 1.01 | $ 0.90
Total number of shares granted to the Board of directors (in shares) | 39,032 |
Shares issue price (in dollars per share) | $ 2.69 |
Total value of shares issued | $ 105,000 |
$1.61 - $2.46 |  |
Information by exercise price range |  |
Ranges of Exercise Prices, Lower (in dollars per share) | $ 1.61 |
Ranges of Exercise Prices, Upper (in dollars per share) | $ 2.46 |
Options Outstanding, Number Outstanding (in shares) | 784,701 |
Options Outstanding, Weighted Average Remaining Contractual Life | 8 years 7 months 6 days |
Options Outstanding, Weighted Average Exercise Price Per Share | $ 1.81 |
Options Exercisable, Number Exercisable (in shares) | 288,839 |
Options Exercisable, Weighted Average Exercise Price Per Share | $ 1.78 |
$2.79 - $4.22 |  |
Information by exercise price range |  |
Ranges of Exercise Prices, Lower (in dollars per share) | $ 2.79 |
Ranges of Exercise Prices, Upper (in dollars per share) | $ 4.22 |
Options Outstanding, Number Outstanding (in shares) | 324,741 |
Options Outstanding, Weighted Average Remaining Contractual Life | 6 years 9 months 11 days |
Options Outstanding, Weighted Average Exercise Price Per Share | $ 3.67 |
Options Exercisable, Number Exercisable (in shares) | 256,159 |
Options Exercisable, Weighted Average Exercise Price Per Share | $ 3.58 |
$5.49 |  |
Information by exercise price range |  |
Exercise price (in dollars per share) | $ 5.49 |
Options Outstanding, Number Outstanding (in shares) | 142,000 |
Options Outstanding, Weighted Average Remaining Contractual Life | 6 years 29 days |
Options Outstanding, Weighted Average Exercise Price Per Share | $ 5.49 |
Options Exercisable, Number Exercisable (in shares) | 142,000 |
Options Exercisable, Weighted Average Exercise Price Per Share | $ 5.49 |

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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + 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 Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + 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 Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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