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Note 8. Stock Options and Restricted Stock Units (Details 1) | 12 Months Ended
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Dec. 31, 2018 $ / shares shares
Number of options outstanding, ending | 98,563
Option 1 |
Exercise price range | 0.01 - $7.00
Number of options outstanding, ending | 10,000
Weighted average exercise price | $ / shares | $ 6.80
Weighted average remaining contractual life (in years) | 6 years 10 months 20 days
Number of options exercisable | 9,167
Option 2 |
Exercise price range | 7.01 - $8.00
Number of options outstanding, ending | 20,313
Weighted average exercise price | $ / shares | $ 7.76
Weighted average remaining contractual life (in years) | 4 years 8 months 27 days
Number of options exercisable | 20,313
Option 3 |
Exercise price range | 8.01 - $10.00
Number of options outstanding, ending | 4,250
Weighted average exercise price | $ / shares | $ 9.26
Weighted average remaining contractual life (in years) | 5 years 11 months 26 days
Number of options exercisable | 4,250
Option 4 |
Exercise price range | 10.01 - $15.00
Number of options outstanding, ending | 32,000
Weighted average exercise price | $ / shares | $ 13.00
Weighted average remaining contractual life (in years) | 8 years 8 months 27 days
Number of options exercisable | 32,000
Option 5 |
Exercise price range | 15.01 - $17.40
Number of options outstanding, ending | 32,000
Weighted average exercise price | $ / shares | $ 17.40
Weighted average remaining contractual life (in years) | 9 years 5 months 1 day
Number of options exercisable | 0
Total |
Number of options outstanding, ending | 98,563
Weighted average exercise price | $ / shares | $ 12.56
Number of options exercisable | 65,730

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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://fasb.org/us-gaap/role/ref/legacyRef -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=109197908&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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