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Note 17 - Earnings Per Share Reconciliation (Details) - USD ($) shares in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Common Class A [Member] | Distributed [Member] |  |  |
Reallocation of distributed income as a result of conversion of dilutive stock options | $ 15,000 | $ 15,000 | $ 15,000
Reallocation of distributed income due to conversion of Class B to Class A | 1,932,000 | 1,547,000 | 1,009,000
Common Class A [Member] | Diluted [Member] |  |  |
Distributed income applicable to common stockholders | (19,985,000) | (15,929,000) | (10,085,000)
Distributed income applicable to common stockholders | 19,985,000 | 15,929,000 | 10,085,000
Undistributed income from continuing operations applicable to common stockholders | 163,014,000 | 119,611,000 | 95,129,000
Common Class A [Member] | Undistributed [Member] |  |  |
Reallocation of distributed income as a result of conversion of dilutive stock options | 120,000 | 116,000 | 142,000
Reallocation of distributed income due to conversion of Class B to Class A | $ 15,760,000 | $ 11,616,000 |
Common Class A [Member] | Employee Stock Option [Member] |  |  |
Shares issuable pursuant to stock options not included since they were antidilutive (in shares) | 16 | 13 |
Common Class A [Member] |  |  |
Income from continuing operations applicable to common stockholders | $ 165,172,000 | $ 122,246,000 | 94,532,000
Distributed income applicable to common stockholders | (18,038,000) | (14,367,000) | (9,061,000)
Basic undistributed income from continuing operations applicable to common stockholders | $ 147,134,000 | $ 107,879,000 | $ 85,471,000
Weighted average number of shares out-standing used to calculate basic income per share (in shares) | 23,729 | 23,559 | 23,185
Basic income from continuing operations per share applicable to common stockholders (in dollars per share) | $ 6.96 | $ 5.19 | $ 4.08
Basic distributed income per share applicable to common stockholders (in dollars per share) | (0.76) | (0.61) | (0.39)
Basic undistributed income from continuing operations per share applicable to common stockholders (in dollars per share) | $ 6.20 | $ 4.58 | $ 3.69
Distributed income applicable to common stockholders | $ 18,038,000 | $ 14,367,000 | $ 9,061,000
Undistributed income from continuing operations applicable to common stockholders | $ 147,134,000 | $ 107,879,000 | $ 85,471,000
Weighted average number of shares from stock options (in shares) | 200 | 261 | 386
Conversion of Class B to Class A (in shares) | 2,561 | 2,562 | 2,620
Weighted average number of shares outstanding used to calculate diluted income per share (in shares) | 26,490 | 26,382 | 26,191
Diluted income from continuing operations per share available to common stockholders | $ 6,910 | $ 5,140 | $ 4,020
Diluted distributed income from continuing operations per share applicable to common stockholders (in dollars per share) | $ (0.76) | $ (0.61) | $ (0.39)
Diluted undistributed income from continuing operations per share applicable to common stockholders (in dollars per share) | $ 6.15 | $ 4.53 | $ 3.63
Common Class B [Member] | Distributed [Member] |  |  |
Reallocation of distributed income as a result of conversion of dilutive stock options | $ (15,000) | $ (15,000) | $ (15,000)
Reallocation of distributed income due to conversion of Class B to Class A |  |  |
Common Class B [Member] | Diluted [Member] |  |  |
Distributed income applicable to common stockholders | $ (1,932,000) | $ (1,547,000) | $ (1,009,000)
Distributed income applicable to common stockholders | 1,932,000 | 1,547,000 | 1,009,000
Undistributed income from continuing operations applicable to common stockholders | 15,760,000 | 11,616,000 | 9,516,000
Common Class B [Member] | Undistributed [Member] |  |  |
Reallocation of distributed income as a result of conversion of dilutive stock options | (120,000) | (116,000) | (142,000)
Common Class B [Member] |  |  |
Income from continuing operations applicable to common stockholders | 17,827,000 | 13,294,000 | 10,682,000
Distributed income applicable to common stockholders | (1,947,000) | (1,562,000) | (1,024,000)
Basic undistributed income from continuing operations applicable to common stockholders | $ 15,880,000 | $ 11,732,000 | $ 9,658,000
Weighted average number of shares out-standing used to calculate basic income per share (in shares) | 2,561 | 2,562 | 2,620
Basic income from continuing operations per share applicable to common stockholders (in dollars per share) | $ 6.96 | $ 5.19 | $ 4.08
Basic distributed income per share applicable to common stockholders (in dollars per share) | (0.76) | (61) | (0.39)
Basic undistributed income from continuing operations per share applicable to common stockholders (in dollars per share) | $ 6.20 | $ 4.58 | $ 3.69
Distributed income applicable to common stockholders | $ 1,947,000 | $ 1,562,000 | $ 1,024,000
Undistributed income from continuing operations applicable to common stockholders | $ 15,880,000 | $ 11,732,000 | $ 9,658,000
Weighted average number of shares from stock options (in shares) |  |  |
Conversion of Class B to Class A (in shares) |  |  |
Weighted average number of shares outstanding used to calculate diluted income per share (in shares) | 2,561 | 2,562 | 2,620
Diluted income from continuing operations per share available to common stockholders | $ 6,910 | $ 5,140 | $ 4,020
Diluted distributed income from continuing operations per share applicable to common stockholders (in dollars per share) | $ (0.76) | $ (0.61) | $ (0.39)
Diluted undistributed income from continuing operations per share applicable to common stockholders (in dollars per share) | $ 6.15 | $ 4.53 | $ 3.63
Income from continuing operations applicable to common stockholders | $ 182,999,000 | $ 135,540,000 | $ 105,214,000
Weighted average number of shares out-standing used to calculate basic income per share (in shares) | 26,290 | 26,121 | 25,805
Basic income from continuing operations per share applicable to common stockholders (in dollars per share) | $ 6.96 | $ 5.19 | $ 4.08
Weighted average number of shares outstanding used to calculate diluted income per share (in shares) | 26,490 | 26,382 | 26,191

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