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Note 7 - Shareholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2013
Note 7 - Shareholders' Equity (Tables) [Line Items] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Number of Shares |  |  | Weighted Average Exercise Price Per Share |  | Weighted Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value |
Shares under option at January 1, 2013 |  |  | 2,211,488 |  |  | $ | 7.47 |  |  |  |  |
Options granted |  |  | 153,000 |  |  |  | 3.49 |  |  |  |  |
Options exercised |  |  | (3,000 | ) |  |  | 3.91 |  |  |  |  |
Options forfeited |  |  | (29,882 | ) |  |  | 4.26 |  |  |  |  |
Options expired |  |  | (162,068 | ) |  |  | 10.87 |  |  |  |  |
Shares under option at June 30, 2013 |  |  | 2,169,538 |  |  | $ | 6.98 |  | 4.58 |  | $ | 74 |
Vested and expected to vest as of June 30, 2013 |  |  | 1,958,735 |  |  | $ | 7.22 |  | 4.53 |  | $ | 56 |
Options exercisable at June 30, 2013 |  |  | 960,662 |  |  | $ | 6.72 |  | 3.59 |  | $ | 0 |
Schedule Of Share Based Compensation, Restricted Stock Units, Award Values [Table Text Block] |
|  | Three Month Period Ended June 30, 2013 |
Number of shares award |  |  | 120,000 |
Weighted average fair value per share |  | $ | 3.62 |
Aggregate total value |  | $ | 434 |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Unvested at January 1, 2013 |  |  | 0 |  |  | $ | 0 |
Granted |  |  | 120,000 |  |  | $ | 3.62 |
Vested |  |  | 0 |  |  |  | 0 |
Forfeited |  |  | 0 |  |  |  | 0 |
Unvested at June 30, 2013 |  |  | 120,000 |  |  | $ | 3.62 |
Employee Stock Option [Member] |
Note 7 - Shareholders' Equity (Tables) [Line Items] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Six Month Periods Ended |
|  | June 30, 2013 |  |  | July 1, 2012 |
Risk-free interest rate |  |  | 0.68 | % |  |  | 0.59 | %
Volatility factor |  |  | 62.60 | % |  |  | 62.88 | %
Dividends |  |  | 0.00 | % |  |  | 0.00 | %
Weighted average expected life (years) |  |  | 4.06 |  |  |  | 3.91 |
Restricted Stock Units (RSUs) [Member] |
Note 7 - Shareholders' Equity (Tables) [Line Items] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Six Month Period Ended |
|  | June 30, 2013 |
Risk-free interest rate |  |  | 0.21 | %
Volatility factor |  |  | 59.08 | %
Dividends |  |  | 0.00 | %

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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