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Shareholders' Equity (Share Option Activity) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Shareholders' Equity [Abstract] |  |  |
Outstanding, beginning balance | 833,799 | 735,519 | 1,195,085
Granted | 464,335 | 296,000 | 75,000
Forfeited and cancelled | (122,952) | (108,724) | (174,915)
Exercised | (24,061) | (88,996) | (359,651)
Outstanding, ending balance | 1,151,121 | 833,799 | 735,519
Vested at year end | 461,192 | 423,291 | 368,016
Vested and expected to vest at December 31, 2015 | 1,095,927 |  |
Exercisable at December 31, 2015 | 461,192 |  |
Weighted average exercise price, Outstanding, beginning balance | $ 3.34 | $ 2.99 | $ 3.15
Weighted average exercise price, Granted | 2.99 | 3.53 | 1.73
Weighted average exercise price, Forfeited and cancelled | 2.95 | 2.47 | 2.96
Weighted average exercise price, Exercised | 1.4 | 2.14 | 3.26
Weighted average exercise price, Outstanding, ending balance | 3.28 | 3.34 | 2.99
Weighted exercise price, Vested at year end | 3.48 | $ 3.56 | $ 3.42
Weighted average exercise price, Vested and expected to vest at December 31, 2014 | 3.28 |  |
Weighted average exercise price, Exercisable at December 31, 2014 | $ 3.48 |  |
Weighted average Remaining Contractual term (years), Outstanding |  | 8 months 23 days |
Weighted average Remaining Contractual term (years), Vested and expected to vest |  | 8 months 23 days |
Weighted average Remaining Contractual term (years), Exercisable |  | 3 years |
Aggregate intrinsic Value, Outstanding | $ 45,100 | $ 205,660 | $ 813,000
Aggregate Intrinsic Value, Vested and Expected to Vest | 41,000 |  |
Aggregate intrinsic Value, Exercisable | $ 38,100 | $ 87,680 | $ 275,000

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- Definition As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested. + References No definition available. + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to 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)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + 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 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=6415400&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=6415400&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=6415400&loc=d3e5070-113901 + Details
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- Definition The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 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=6415400&loc=d3e5070-113901 + Details
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