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Note 13 - Non-vested Option Awards Activity (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Service Based Options [Member] |  |
Balance at beginning of period, nonvested (in shares) | 282,550 |
Weighted average grant date fair value, beginning of period, nonvested (in dollars per share) | $ 5.60 |
Nonvested Contractual Life | 5 years 146 days | 5 years 109 days
Granted (in shares) | 154,000 |
Granted (in dollars per share) | $ 5.96 |
Granted | 6 years 146 days |
Vested (in shares) | (89,300) |
Vested (in dollars per share) | $ 5.62 |
Vested | 3 years 219 days |
Forfeited (in shares) | (9,700) |
Forfeited (in dollars per share) | $ 5.40 |
Forfeited | 4 years 255 days |
Balance at end of period, nonvested (in shares) | 337,550 | 282,550
Weighted average grant date fair value, end of period, nonvested (in dollars per share) | $ 5.77 | $ 5.60
Granted (in shares) | 154,000 |
Granted (in dollars per share) | $ 5.96 | $ 6.25
Forfeited (in shares) | (11,400) |

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- Definition Share based compensation arrangement by share based payment award options outstanding nonvested weighted average remaining contractual terms. + References No definition available. + Details
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- Definition Sharebased compensation arrangement by sharebased payment award options forfeited weighted average remaining contractual term2. + References No definition available. + Details
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- Definition Sharebased compensation arrangement by sharebased payment award options granted weighted average remaining contractual term1. + References No definition available. + Details
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- Definition Sharebased compensation arrangement by sharebased payment award options vested remaining contractual term2. + 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 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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