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Note 12 - Net Income Per Share of Class A and Class B Common Stock (Tables) | 9 Months Ended
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Sep. 30, 2013
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
Three Months Ended September 30, |  | 2013 |  |  | 2012 |
Basic EPS from Continuing Operations |  | Class A |  |  | Class B |  |  | Class A |  |  | Class B |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations applicable to common stockholders |  | $ | 27,831 |  |  | $ | 3,060 |  |  | $ | 20,073 |  |  | $ | 3,019 |
Distributed income applicable to common stockholders |  |  | (3,030 | ) |  |  | (333 | ) |  |  | (2,212 | ) |  |  | (333 | )
Basic undistributed income from continuing operations applicable to common stockholders |  | $ | 24,801 |  |  | $ | 2,727 |  |  | $ | 17,861 |  |  | $ | 2,686 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding used to calculate basic income per share |  |  | 23,304 |  |  |  | 2,562 |  |  |  | 22,139 |  |  |  | 3,330 |
Basic income per share from continuing operations applicable to common stockholders |  | $ | 1.19 |  |  | $ | 1.19 |  |  | $ | 0.91 |  |  | $ | 0.91 |
Basic distributed income per share from continuing operations applicable to common stockholders |  |  | (0.13 | ) |  |  | (0.13 | ) |  |  | (0.10 | ) |  |  | (0.10 | )
Basic undistributed income per share from continuing operations applicable to common stockholders |  | $ | 1.06 |  |  | $ | 1.06 |  |  | $ | 0.81 |  |  | $ | 0.81 |
Three Months Ended September 30, |  | 2013 |  |  | 2012 |
Diluted EPS from Continuing Operations |  | Class A |  |  | Class B |  |  | Class A |  |  | Class B |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributed income applicable to common stockholders |  | $ | 3,030 |  |  | $ | 333 |  |  | $ | 2,212 |  |  | $ | 333 |
Reallocation of distributed income as a result of conversion of dilutive stock options |  |  | 5 |  |  |  | (5 | ) |  |  | 6 |  |  |  | (6 | )
Reallocation of distributed income due to conversion of Class B to Class A common shares outstanding |  |  | 328 |  |  |  | - |  |  |  | 327 |  |  |  | - |
Diluted distributed income applicable to common stockholders |  | $ | 3,363 |  |  | $ | 328 |  |  | $ | 2,545 |  |  | $ | 327 |
Undistributed income from continuing operations applicable to common stockholders |  | $ | 24,801 |  |  | $ | 2,727 |  |  | $ | 17,861 |  |  | $ | 2,686 |
Reallocation of undistributed income as a result of conversion of dilutive stock options |  |  | 39 |  |  |  | (39 | ) |  |  | 49 |  |  |  | (49 | )
Reallocation of undistributed income due to conversion of Class B to Class A |  |  | 2,688 |  |  |  | - |  |  |  | 2,637 |  |  |  | - |
Diluted undistributed income from continuing operations applicable to common stockholders |  | $ | 27,528 |  |  | $ | 2,688 |  |  | $ | 20,547 |  |  | $ | 2,637 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding used to calculate basic income per share from continuing operations |  |  | 23,304 |  |  |  | 2,562 |  |  |  | 22,139 |  |  |  | 3,330 |
Weighted average number of shares from stock options |  |  | 371 |  |  |  | - |  |  |  | 478 |  |  |  | - |
Conversion of Class B to Class A common shares outstanding |  |  | 2,562 |  |  |  | - |  |  |  | 3,330 |  |  |  | - |
Weighted average number of shares outstanding used to calculate diluted income per share from continuing operations |  |  | 26,237 |  |  |  | 2,562 |  |  |  | 25,947 |  |  |  | 3,330 |
Diluted income per share from continuing operations applicable to common stockholders |  | $ | 1.18 |  |  | $ | 1.18 |  |  | $ | 0.89 |  |  | $ | 0.89 |
Diluted distributed income per share from continuing operations applicable to common stockholders |  |  | (0.13 | ) |  |  | (0.13 | ) |  |  | (0.10 | ) |  |  | (0.10 | )
Diluted undistributed income per share from continuing operations applicable to common stockholders |  | $ | 1.05 |  |  | $ | 1.05 |  |  | $ | 0.79 |  |  | $ | 0.79 |
Three Months Ended September 30, |  | 2013 |  |  | 2012 |
Diluted EPS |  | Class A |  |  | Class B |  |  | Class A |  |  | Class B |
Antidilutive Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issuable pursuant to stock options not included since they were antidilutive |  |  | 14 |  |  |  | - |  |  |  | - |  |  |  | - |
Nine Months Ended September 30, |  | 2013 |  |  | 2012 |
Basic EPS from Continuing Operations |  | Class A |  |  | Class B |  |  | Class A |  |  | Class B |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations applicable to common stockholders |  | $ | 70,063 |  |  | $ | 7,991 |  |  | $ | 51,525 |  |  | $ | 8,206 |
Distributed income applicable to common stockholders |  |  | (6,031 | ) |  |  | (688 | ) |  |  | (5,989 | ) |  |  | (954 | )
Basic undistributed income from continuing operations applicable to common stockholders |  | $ | 64,032 |  |  | $ | 7,303 |  |  | $ | 45,536 |  |  | $ | 7,252 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding used to calculate basic income per share |  |  | 23,137 |  |  |  | 2,639 |  |  |  | 22,195 |  |  |  | 3,535 |
Basic income per share from continuing operations applicable to common stockholders |  | $ | 3.03 |  |  | $ | 3.03 |  |  | $ | 2.32 |  |  | $ | 2.32 |
Basic distributed income per share from continuing operations applicable to common stockholders |  |  | (0.26 | ) |  |  | (0.26 | ) |  |  | (0.27 | ) |  |  | (0.27 | )
Basic undistributed income per share from continuing operations applicable to common stockholders |  | $ | 2.77 |  |  | $ | 2.77 |  |  | $ | 2.05 |  |  | $ | 2.05 |
Nine Months Ended September 30, |  | 2013 |  |  | 2012 |
Diluted EPS from Continuing Operations |  | Class A |  |  | Class B |  |  | Class A |  |  | Class B |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributed income applicable to common stockholders |  | $ | 6,031 |  |  | $ | 688 |  |  | $ | 5,989 |  |  | $ | 954 |
Reallocation of distributed income as a result of conversion of dilutive stock options |  |  | 10 |  |  |  | (10 | ) |  |  | 17 |  |  |  | (17 | )
Reallocation of distributed income due to conversion of Class B to Class A common shares outstanding |  |  | 678 |  |  |  | - |  |  |  | 937 |  |  |  | - |
Diluted distributed income applicable to common stockholders |  | $ | 6,719 |  |  | $ | 678 |  |  | $ | 6,943 |  |  | $ | 937 |
Undistributed income from continuing operations applicable to common stockholders |  | $ | 64,032 |  |  | $ | 7,303 |  |  | $ | 45,536 |  |  | $ | 7,252 |
Reallocation of undistributed income as a result of conversion of dilutive stock options |  |  | 107 |  |  |  | (107 | ) |  |  | 130 |  |  |  | (130 | )
Reallocation of undistributed income due to conversion of Class B to Class A |  |  | 7,196 |  |  |  | - |  |  |  | 7,122 |  |  |  | - |
Diluted undistributed income from continuing operations applicable to common stockholders |  | $ | 71,335 |  |  | $ | 7,196 |  |  | $ | 52,788 |  |  | $ | 7,122 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding used to calculate basic income per share from continuing operations |  |  | 23,137 |  |  |  | 2,639 |  |  |  | 22,195 |  |  |  | 3,535 |
Weighted average number of shares from stock options |  |  | 383 |  |  |  | - |  |  |  | 473 |  |  |  | - |
Conversion of Class B to Class A common shares outstanding |  |  | 2,639 |  |  |  | - |  |  |  | 3,535 |  |  |  | - |
Weighted average number of shares outstanding used to calculate diluted income per share from continuing operations |  |  | 26,159 |  |  |  | 2,639 |  |  |  | 26,203 |  |  |  | 3,535 |
Diluted income per share from continuing operations applicable to common stockholders |  | $ | 2.98 |  |  | $ | 2.98 |  |  | $ | 2.28 |  |  | $ | 2.28 |
Diluted distributed income per share from continuing operations applicable to common stockholders |  |  | (0.26 | ) |  |  | (0.26 | ) |  |  | (0.26 | ) |  |  | (0.26 | )
Diluted undistributed income per share from continuing operations applicable to common stockholders |  | $ | 2.72 |  |  | $ | 2.72 |  |  | $ | 2.02 |  |  | $ | 2.02 |
Nine Months Ended September 30, |  | 2013 |  |  | 2012 |
Diluted EPS |  | Class A |  |  | Class B |  |  | Class A |  |  | Class B |
Antidilutive Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issuable pursuant to stock options not included since they were antidilutive |  |  | 17 |  |  |  | - |  |  |  | 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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