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Note 13 - Stockholders' Equity - Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Tax expense (benefit) |  | $ 1,046 | $ 1,910 | $ 4,489 | $ 2,950 | $ 7,693 | $ 5,291 | $ 6,775 | $ 5,254 | $ 10,395 | $ 25,013 | $ 41,103
Net income, as reported |  | 12,422 | 17,333 | 13,923 | 11,412 | 5,957 | 10,179 | 12,725 | 12,260 | 55,090 | 41,121 | 64,916
Other expense |  |  |  |  |  |  |  |  |  | (15,235) | (15,239) | (14,739)
Total before tax |  | 13,468 | 19,243 | 18,412 | 14,362 | 13,650 | 15,470 | 19,500 | 17,514 | 65,485 | 66,134 | 106,019
Tax expense (benefit) |  | $ (1,046) | $ (1,910) | $ (4,489) | $ (2,950) | $ (7,693) | $ (5,291) | $ (6,775) | $ (5,254) | (10,395) | (25,013) | (41,103)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net loss on sale of securities |  |  |  |  |  |  |  |  |  | (1,920) | (186) | 1,524
Tax expense (benefit) |  |  |  |  |  |  |  |  |  | 595 | 78 | (638)
Net income, as reported |  |  |  |  |  |  |  |  |  | (1,325) | (108) | 886
Tax expense (benefit) |  |  |  |  |  |  |  |  |  | (595) | (78) | 638
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Interest Rate Swap [Member] |  |  |  |  |  |  |  |  |  |  |  |
Tax expense (benefit) |  |  |  |  |  |  |  |  |  | 32 | 58 |
Net income, as reported |  |  |  |  |  |  |  |  |  | (72) | (126) |
Other expense |  |  |  |  |  |  |  |  |  | (104) | (184) |
Tax expense (benefit) |  |  |  |  |  |  |  |  |  | (32) | (58) |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |  |
Other expense | [1] |  |  |  |  |  |  |  |  | (530) | (605) | (568)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |  |
Other expense | [1] |  |  |  |  |  |  |  |  | 39 | 45 | 45
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |  |
Tax expense (benefit) |  |  |  |  |  |  |  |  |  | 155 | 237 | (220)
Net income, as reported |  |  |  |  |  |  |  |  |  | (336) | (323) | (303)
Total before tax |  |  |  |  |  |  |  |  |  | (491) | (560) | (523)
Tax expense (benefit) |  |  |  |  |  |  |  |  |  | $ (155) | $ (237) | $ 220
[1] | These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (see Note 12 of the Notes to Consolidated Financial Statements "Pension and Other Postretirement Benefit Plans").

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- Definition This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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