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Note 11 - Stockholders' Equity (Details) - Stock Option Transactions (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Note 11 - Stockholders' Equity (Details) - Stock Option Transactions [Line Items] |  |  |
Granted (in Shares) | 12,000 | 12,000 | 12,000
Granted | $ 6.87 | $ 5.27 | $ 4.80
Exercised (in Shares) | (49,000) | (6,000) | 0
Exercised | $ 4.23 | $ 3.50 |
Outstanding at December 31 (in Shares) | 84,600 |  |
Outstanding at December 31 | $ 5.04 |  |
Weighted-average fair value of options granted during year | $ 0.97 | $ 0.83 | $ 1.19
Director 2007 Non-Qualified Stock Option Plan [Member] | Year 2013 [Member] |  |  |
Note 11 - Stockholders' Equity (Details) - Stock Option Transactions [Line Items] |  |  |
Outstanding at January 1 (in Shares) | 121,600 |  |
Outstanding at January 1 | $ 4.53 |  |
Granted (in Shares) | 12,000 |  |
Granted | $ 6.87 |  |
Exercised (in Shares) | (49,000) |  |
Exercised | $ 4.23 |  |
Outstanding at December 31 (in Shares) | 84,600 |  |
Outstanding at December 31 | $ 5.04 |  |
Exercisable at end of year (in Shares) | 84,600 |  |
Exercisable at end of year | $ 5.04 |  |
Weighted-average fair value of options granted during year | $ 0.97 |  |
Director 2007 Non-Qualified Stock Option Plan [Member] | Year 2012 [Member] |  |  |
Note 11 - Stockholders' Equity (Details) - Stock Option Transactions [Line Items] |  |  |
Outstanding at January 1 (in Shares) |  | 115,600 |
Outstanding at January 1 |  | $ 4.40 |
Granted (in Shares) |  | 12,000 |
Granted |  | $ 5.27 |
Exercised (in Shares) |  | (6,000) |
Exercised |  | $ 3.50 |
Outstanding at December 31 (in Shares) |  | 121,600 |
Outstanding at December 31 |  | $ 4.53 |
Exercisable at end of year (in Shares) |  | 121,600 |
Exercisable at end of year |  | $ 4.53 |
Weighted-average fair value of options granted during year |  | $ 0.83 |
Director 2007 Non-Qualified Stock Option Plan [Member] | Year 2011 [Member] |  |  |
Note 11 - Stockholders' Equity (Details) - Stock Option Transactions [Line Items] |  |  |
Outstanding at January 1 (in Shares) |  |  | 103,600
Outstanding at January 1 |  |  | $ 4.35
Granted (in Shares) |  |  | 12,000
Granted |  |  | $ 4.80
Outstanding at December 31 (in Shares) |  |  | 115,600
Outstanding at December 31 |  |  | $ 4.40
Exercisable at end of year (in Shares) |  |  | 115,600
Exercisable at end of year |  |  | $ 4.40
Weighted-average fair value of options granted during year |  |  | $ 1.19

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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=6415400&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=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 The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -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 Number of share options (or share units) exercised during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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