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Note 11 - Share Based Compensation - Information About Stock Options Outstanding (Details) | 12 Months Ended
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Dec. 31, 2016 $ / shares shares
Number of Outstanding Options (in shares) | shares | 42,000
Number of Vested Options (in shares) | shares | 27,000
Exercise Price Range 01 [Member] |
Range of Exercise Prices Lower Unit (in dollars per share) | $ / shares | $ 5.27
Range of Exercise Prices Upper Unit (in dollars per share) | $ / shares | $ 6.10
Number of Outstanding Options (in shares) | shares | 17,000
Number of Vested Options (in shares) | shares | 2,000
Weighted-Average Remaining Contractual Life Outstanding (Year) | 6 years 226 days
Weighted-Average Remaining Contractual Life Vested (Year) | 1 year 7 days
Weighted-Average Exercise Price Outstanding (in dollars per share) | $ / shares | $ 6
Weighted-Average Exercise Price Vested (in dollars per share) | $ / shares | $ 5.27
Exercise Price Range 03 [Member] |
Number of Outstanding Options (in shares) | shares | 25,000
Number of Vested Options (in shares) | shares | 25,000
Weighted-Average Remaining Contractual Life Outstanding (Year) | 200 days
Weighted-Average Remaining Contractual Life Vested (Year) | 200 days
Weighted-Average Exercise Price Outstanding (in dollars per share) | $ / shares | $ 9.81
Weighted-Average Exercise Price Vested (in dollars per share) | $ / shares | $ 9.81

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- Definition The number of vested stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References No definition available. + 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 vested stock options which are in the customized range of exercise prices. + References No definition available. + Details
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- Definition Weighted average remaining contractual term of vested stock options. + References No definition available. + 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 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=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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- 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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