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Note 18 - Stockholders' Equity - Accumulated Other Comprehensive Income (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jan. 01, 2018 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Beginning balance, loss, net of tax | $ 1,973,304,000 |  |  |  |  | $ 1,973,304,000 |
Ending balance, loss, net of tax |  | $ 2,116,775,000 |  |  |  | 2,116,775,000 |
Reclassification adjustment for stranded tax effects of Tax Cuts and Job Act, tax | 515,000 |  |  |  |  |  |
Ending balance, loss, net of tax | 1,973,304,000 | 2,116,775,000 |  |  |  | 2,116,775,000 |
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] |  |  |  |  |  |  |
Beginning balance, loss, net of tax | (1,060,000) | (24,084,000) |  | $ 1,001,000 |  | (1,060,000) | $ (1,545,000)
Net unrealized (losses)/gains arising during the period, pre-tax |  | (3,603,000) | [1] | 1,829,000 | [1] | (23,854,000) | 5,758,000
Net unrealized (losses)/gains arising during the period, tax |  | (1,065,000) |  | 769,000 |  | (7,051,000) | 2,420,000
Net unrealized (losses)/gains arising during the period, net of tax |  | (2,538,000) |  | 1,060,000 |  | (16,803,000) | 3,338,000
Reclassification adjustment for net losses/(gains) included in net income, pre-tax |  | 14,000 |  | (24,000) |  | 14,000 | 439,000
Reclassification adjustment for net losses/(gains) included in net income, tax |  | 4,000 |  | (10,000) |  | 4,000 | 185,000
Reclassification adjustment for net losses/(gains) included in net income, net of tax |  | 10,000 |  | (14,000) |  | 10,000 | 254,000
Total other comprehensive (loss)/income, pre-tax |  | (3,589,000) |  | 1,805,000 |  | (23,840,000) | 6,197,000
Total other comprehensive (loss)/income, tax |  | (1,061,000) |  | 759,000 |  | (7,047,000) | 2,605,000
Total other comprehensive (loss)/income, net of tax |  | (2,528,000) |  | 1,046,000 |  | (16,793,000) | 3,592,000
Ending balance, loss, net of tax |  | (26,612,000) |  | 2,047,000 |  | (26,612,000) | 2,047,000
Reclassification adjustment for stranded tax effects of Tax Cuts and Job Act, tax |  |  |  |  |  | 200,000 |
Reclassification adjustment for stranded tax effects of Tax Cuts and Job Act, net of tax |  |  |  |  |  | (200,000) |
Ending balance, loss, net of tax | (1,060,000) | (24,084,000) |  | 1,001,000 |  | (26,612,000) | 2,047,000
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] |  |  |  |  |  |  |
Beginning balance, loss, net of tax | (1,451,000) | 1,163,000 |  | (2,421,000) |  | (1,451,000) | (2,170,000)
Net unrealized (losses)/gains arising during the period, pre-tax |  | 2,365,000 | [1] | 271,000 | [1] | 6,523,000 | (162,000)
Net unrealized (losses)/gains arising during the period, tax |  | 699,000 |  | 114,000 |  | 1,928,000 | (68,000)
Net unrealized (losses)/gains arising during the period, net of tax |  | 1,666,000 |  | 157,000 |  | 4,595,000 | (94,000)
Reclassification adjustment for net losses/(gains) included in net income, pre-tax |  |  |  |  |  |  |
Reclassification adjustment for net losses/(gains) included in net income, tax |  |  |  |  |  |  |
Reclassification adjustment for net losses/(gains) included in net income, net of tax |  |  |  |  |  |  |
Total other comprehensive (loss)/income, pre-tax |  | 2,365,000 |  | 271,000 |  | 6,523,000 | (162,000)
Total other comprehensive (loss)/income, tax |  | 699,000 |  | 114,000 |  | 1,928,000 | (68,000)
Total other comprehensive (loss)/income, net of tax |  | 1,666,000 |  | 157,000 |  | 4,595,000 | (94,000)
Ending balance, loss, net of tax |  | 2,829,000 |  | (2,264,000) |  | 2,829,000 | (2,264,000)
Reclassification adjustment for stranded tax effects of Tax Cuts and Job Act, tax |  |  |  |  |  | 315,000 |
Reclassification adjustment for stranded tax effects of Tax Cuts and Job Act, net of tax |  |  |  |  |  | (315,000) |
Ending balance, loss, net of tax | (1,451,000) | 1,163,000 |  | (2,421,000) |  | 2,829,000 | (2,264,000)
AOCI Attributable to Parent [Member] |  |  |  |  |  |  |
Beginning balance, loss, net of tax | (2,511,000) | (22,921,000) |  | (1,420,000) |  | (2,511,000) | (3,715,000)
Net unrealized (losses)/gains arising during the period, pre-tax |  | (1,238,000) | [1] | 2,100,000 | [1] | (17,331,000) | 5,596,000
Net unrealized (losses)/gains arising during the period, tax |  | (366,000) |  | 883,000 |  | (5,123,000) | 2,352,000
Net unrealized (losses)/gains arising during the period, net of tax |  | (872,000) |  | 1,217,000 |  | (12,208,000) | 3,244,000
Reclassification adjustment for net losses/(gains) included in net income, pre-tax |  | 14,000 |  | (24,000) |  | 14,000 | 439,000
Reclassification adjustment for net losses/(gains) included in net income, tax |  | 4,000 |  | (10,000) |  | 4,000 | 185,000
Reclassification adjustment for net losses/(gains) included in net income, net of tax |  | 10,000 |  | (14,000) |  | 10,000 | 254,000
Total other comprehensive (loss)/income, pre-tax |  | (1,224,000) |  | 2,076,000 |  | (17,317,000) | 6,035,000
Total other comprehensive (loss)/income, tax |  | (362,000) |  | 873,000 |  | (5,119,000) | 2,537,000
Total other comprehensive (loss)/income, net of tax |  | (862,000) |  | 1,203,000 |  | (12,198,000) | 3,498,000
Ending balance, loss, net of tax |  | (23,783,000) |  | (217,000) |  | (23,783,000) | (217,000)
Reclassification adjustment for stranded tax effects of Tax Cuts and Job Act, tax |  |  |  |  |  | 515,000 |
Reclassification adjustment for stranded tax effects of Tax Cuts and Job Act, net of tax |  |  |  |  |  | (515,000) |
Reclassification adjustment for net losses/(gains) included in net income, pre-tax |  |  |  |  |  | (12,151,000) |
Reclassification adjustment for net losses/(gains) included in net income, tax |  |  |  |  |  | (3,592,000) |
Reclassification adjustment for net losses/(gains) included in net income, net of tax |  |  |  |  |  | (8,559,000) |
Ending balance, loss, net of tax | $ (2,511,000) | $ (22,921,000) |  | $ (1,420,000) |  | $ (23,783,000) | $ (217,000)
[1] | These amounts were recorded as of January 1, 2018 as a result of the adoption of ASU 2018-2.

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