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Equity (Details 2) | 12 Months Ended
--- | ---
Dec. 31, 2017 $ / shares shares
Option Indexed to Issuers Equity [Line Items] |
Outstanding options, Number | 1,016,867
Exercisable options, Number | 722,734
$1.45 [Member] |
Option Indexed to Issuers Equity [Line Items] |
Outstanding options, Average exercise price | $ / shares | $ 1.45
Outstanding options, Number | 112,000
Outstanding options, Average remaining contractual life (years) | 4 years
Exercisable options, Average exercise price | $ / shares | $ 1.45
Exercisable options, Number | 112,000
Exercisable options, Average remaining contractual life (years) | 4 years
$2.30 [Member] |
Option Indexed to Issuers Equity [Line Items] |
Outstanding options, Average exercise price | $ / shares | $ 2.30
Outstanding options, Number | 94,000
Outstanding options, Average remaining contractual life (years) | 5 years 9 months 7 days
Exercisable options, Average exercise price | $ / shares | $ 2.30
Exercisable options, Number | 75,200
Exercisable options, Average remaining contractual life (years) | 5 years 9 months 7 days
$5.31 [Member] |
Option Indexed to Issuers Equity [Line Items] |
Outstanding options, Average exercise price | $ / shares | $ 5.31
Outstanding options, Number | 131,000
Outstanding options, Average remaining contractual life (years) | 6 years 7 months 21 days
Exercisable options, Average exercise price | $ / shares | $ 5.31
Exercisable options, Number | 78,600
Exercisable options, Average remaining contractual life (years) | 6 years 7 months 21 days
$1.64 [Member] |
Option Indexed to Issuers Equity [Line Items] |
Outstanding options, Average exercise price | $ / shares | $ 1.64
Outstanding options, Number | 234,000
Outstanding options, Average remaining contractual life (years) | 7 years 7 months 6 days
Exercisable options, Average exercise price | $ / shares | $ 1.64
Exercisable options, Number | 234,000
Exercisable options, Average remaining contractual life (years) | 7 years 7 months 6 days
$1.88 [Member] |
Option Indexed to Issuers Equity [Line Items] |
Outstanding options, Average exercise price | $ / shares | $ 1.88
Outstanding options, Number | 445,867
Outstanding options, Average remaining contractual life (years) | 8 years 2 months 19 days
Exercisable options, Average exercise price | $ / shares | $ 1.88
Exercisable options, Number | 222,934
Exercisable options, Average remaining contractual life (years) | 8 years 2 months 19 days

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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=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans 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=96867065&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=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of exercisable 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)(2) -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 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=96867065&loc=d3e5070-113901 + Details
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