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Note 12 - Net Income Per Share of Class A and Class B Common Stock (Tables) | 3 Months Ended
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Mar. 31, 2014
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
Three Months Ended March 31, |  | 2014 |  |  | 2013 |
Basic EPS from Continuing Operations |  | Class A |  |  | Class B |  |  | Class A |  |  | Class B |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations applicable to common stockholders |  | $ | 22,258 |  |  | $ | 2,436 |  |  | $ | 19,525 |  |  | $ | 2,357 |
Distributed income applicable to common stockholders |  |  | (3,045 | ) |  |  | (333 | ) |  |  | - |  |  |  | - |
Basic undistributed income from continuing operations applicable to common stockholders |  | $ | 19,213 |  |  | $ | 2,103 |  |  | $ | 19,525 |  |  | $ | 2,357 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding used to calculate basic income per share |  |  | 23,411 |  |  |  | 2,562 |  |  |  | 22,866 |  |  |  | 2,760 |
Basic income per share from continuing operations applicable to common stockholders |  | $ | 0.95 |  |  | $ | 0.95 |  |  | $ | 0.85 |  |  | $ | 0.85 |
Basic distributed income per share from continuing operations applicable to common stockholders |  |  | (0.13 | ) |  |  | (0.13 | ) |  |  | - |  |  |  | - |
Basic undistributed income per share from continuing operations applicable to common stockholders |  | $ | 0.82 |  |  | $ | 0.82 |  |  | $ | 0.85 |  |  | $ | 0.85 |
Three Months Ended March 31, |  | 2014 |  |  | 2013 |
Diluted EPS from Continuing Operations |  | Class A |  |  | Class B |  |  | Class A |  |  | Class B |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributed income applicable to common stockholders |  | $ | 3,045 |  |  | $ | 333 |  |  | $ | - |  |  | $ | - |
Reallocation of distributed income as a result of conversion of dilutive stock options |  |  | 4 |  |  |  | (4 | ) |  |  | - |  |  |  | - |
Reallocation of distributed income due to conversion of Class B to Class A common shares outstanding |  |  | 329 |  |  |  | - |  |  |  | - |  |  |  | - |
Diluted distributed income applicable to common stockholders |  | $ | 3,378 |  |  | $ | 329 |  |  | $ | - |  |  | $ | - |
Undistributed income from continuing operations applicable to common stockholders |  | $ | 19,213 |  |  | $ | 2,103 |  |  | $ | 19,525 |  |  | $ | 2,357 |
Reallocation of undistributed income as a result of conversion of dilutive stock options |  |  | 28 |  |  |  | (28 | ) |  |  | 39 |  |  |  | (39 | )
Reallocation of undistributed income due to conversion of Class B to Class A |  |  | 2,075 |  |  |  | - |  |  |  | 2,318 |  |  |  | - |
Diluted undistributed income from continuing operations applicable to common stockholders |  | $ | 21,316 |  |  | $ | 2,075 |  |  | $ | 21,882 |  |  | $ | 2,318 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding used to calculate basic income per share from continuing operations |  |  | 23,411 |  |  |  | 2,562 |  |  |  | 22,866 |  |  |  | 2,760 |
Weighted average number of shares from stock options |  |  | 347 |  |  |  | - |  |  |  | 428 |  |  |  | - |
Conversion of Class B to Class A common shares outstanding |  |  | 2,562 |  |  |  | - |  |  |  | 2,760 |  |  |  | - |
Weighted average number of shares outstanding used to calculate diluted income per share from continuing operations |  |  | 26,320 |  |  |  | 2,562 |  |  |  | 26,054 |  |  |  | 2,760 |
Diluted income per share from continuing operations applicable to common stockholders |  | $ | 0.94 |  |  | $ | 0.94 |  |  | $ | 0.84 |  |  | $ | 0.84 |
Diluted distributed income per share from continuing operations applicable to common stockholders |  |  | (0.13 | ) |  |  | (0.13 | ) |  |  | - |  |  |  | - |
Diluted undistributed income per share from continuing operations applicable to common stockholders |  | $ | 0.81 |  |  | $ | 0.81 |  |  | $ | 0.84 |  |  | $ | 0.84 |
Three Months Ended March 31, |  | 2014 |  |  | 2013 |
Diluted EPS |  | Class A |  |  | Class B |  |  | Class A |  |  | Class B |
Antidilutive Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issuable pursuant to stock options not included since they were antidilutive |  |  | 16 |  |  |  | - |  |  |  | 20 |  |  |  | - |

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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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