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Note 13 - Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | 201 7 |  |  | 201 6 |  |  | 201 5 |
Net earnings used in the computation of basic an d diluted earnings per share (in thousands ) |  | $ | 15,022 |  |  | $ | 14,638 |  |  | $ | 13,066 |
Weighted average share s outstanding - basi c |  |  | 14,510,156 |  |  |  | 14,082,243 |  |  |  | 13,761,009 |
Common stock equivalent s |  |  | 608,612 |  |  |  | 815,246 |  |  |  | 817,635 |
Total weighted average share s outstanding - diluted |  |  | 15,118,768 |  |  |  | 14,897,489 |  |  |  | 14,578,644 |
Per Share Data : |  |  |  |  |  |  |  |  |  |  |  |
Basi c |  |  |  |  |  |  |  |  |  |  |  |
Net earning s |  | $ | 1.04 |  |  | $ | 1.04 |  |  | $ | 0.95 |
Dilute d |  |  |  |  |  |  |  |  |  |  |  |
Net earning s |  | $ | 0.99 |  |  | $ | 0.98 |  |  | $ | 0.90 |

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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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