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Shareholders' Equity - Schedule of Stock Options Outstanding and Exercisable (Details) - $ / shares | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Options Outstanding |  | 389,687 | 390,525 | 2,343,022 | 2,276,079
Exercise price range, Lower range |  | $ 0.72 |  |  |
Exercise price range, Upper range |  | 30.24 |  |  |
Weighted Average | [1] | $ 8.05 | $ 20.64 | $ 3.44 | $ 3.78
Remaining Contractual Term (Years) |  | 6 years 8 months 12 days |  |  |
Options Exercisable |  | 274,132 | 376,084 | 2,194,022 |
Weighted Average Exercisable | [1] | $ 10.79 | $ 20.79 | $ 3.53 |
Exercise Price One [Member] |  |  |  |  |
Options Outstanding |  | 56,786 |  |  |
Exercise price range, Lower range |  | $ 9.00 |  |  |
Exercise price range, Upper range |  | 9.00 |  |  |
Weighted Average |  | $ 9.00 |  |  |
Remaining Contractual Term (Years) |  | 7 years |  |  |
Options Exercisable |  | 51,231 |  |  |
Weighted Average Exercisable |  | $ 9.00 |  |  |
Exercise Price Two [Member] |  |  |  |  |
Options Outstanding |  | 49,504 |  |  |
Exercise price range, Lower range |  | $ 12.48 |  |  |
Exercise price range, Upper range |  | 12.48 |  |  |
Weighted Average |  | $ 12.48 |  |  |
Remaining Contractual Term (Years) |  | 5 years 6 months |  |  |
Options Exercisable |  | 49,504 |  |  |
Weighted Average Exercisable |  | $ 12.48 |  |  |
Exercise Price Three [Member] |  |  |  |  |
Options Outstanding |  | 98,396 |  |  |
Exercise price range, Lower range |  | $ 13.92 |  |  |
Exercise price range, Upper range |  | 17.10 |  |  |
Weighted Average |  | $ 15.01 |  |  |
Remaining Contractual Term (Years) |  | 1 year 9 months 18 days |  |  |
Options Exercisable |  | 98,396 |  |  |
Weighted Average Exercisable |  | $ 15.01 |  |  |
Exercise Price Four [Member] |  |  |  |  |
Options Outstanding |  | 15,001 |  |  |
Exercise price range, Lower range |  | $ 22.62 |  |  |
Exercise price range, Upper range |  | 30.24 |  |  |
Weighted Average |  | $ 24.03 |  |  |
Remaining Contractual Term (Years) |  | 5 years 6 months |  |  |
Options Exercisable |  | 15,001 |  |  |
Weighted Average Exercisable |  | $ 24.03 |  |  |
Exercise Price Five [Member] |  |  |  |  |
Options Outstanding |  | 60,000 |  |  |
Exercise price range, Lower range |  | $ 0.72 |  |  |
Exercise price range, Upper range |  | 0.72 |  |  |
Weighted Average |  | $ 0.72 |  |  |
Remaining Contractual Term (Years) |  | 9 years 7 months 6 days |  |  |
Options Exercisable |  | 60,000 |  |  |
Weighted Average Exercisable |  | $ 0.72 |  |  |
Exercise Price Six [Member] |  |  |  |  |
Options Outstanding |  | 110,000 |  |  |
Exercise price range, Lower range |  | $ 1.16 |  |  |
Exercise price range, Upper range |  | 1.16 |  |  |
Weighted Average |  | $ 1.16 |  |  |
Remaining Contractual Term (Years) |  | 9 years 10 months 25 days |  |  |
Options Exercisable |  |  |  |  |
Weighted Average Exercisable |  |  |  |  |
[1] | Represents the weighted average price.

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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=96867065&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + 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=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 (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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) -URI http://asc.fasb.org/extlink&oid=96867065&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=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, 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=96867065&loc=d3e5070-113901 + Details
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