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Note 18 - Net Earnings (Loss) Per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | 2016 |  | 2015 |  | 2014
Shares issued and outstanding at beginning of year |  |  | 38,504,311 |  |  |  | 35,806,955 |  |  |  | 35,801,732 |
Weighted average number of shares: |  |  |  |  |  |  |  |  |  |  |  |
Issued during the year |  |  | 91,754 |  |  |  | 1,389,361 |  |  |  | 335,253 |
Repurchased during the year |  |  | - |  |  |  | - |  |  |  | (220,333 | )
Weighted average number of shares used in computing basic earnings per share |  |  | 38,596,065 |  |  |  | 37,196,316 |  |  |  | 35,916,652 |
Assumed exercise of stock options acquired under the treasury stock method |  |  | 271,771 |  |  |  | 389,937 |  |  |  | 392,326 |
Number of shares used in computing diluted earnings per share |  |  | 38,867,836 |  |  |  | 37,586,253 |  |  |  | 36,308,978 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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