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Note 3 - Segment Reporting Adjusted Pretax Operating Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Adjusted pretax operating income (loss) |  | $ 200,800 | $ 199,706
Net gains (losses) on investments and other financial instruments |  | (22,027) | 21,913
Amortization and impairment of other acquired intangible assets |  | (979) | (2,187)
Impairment of other long-lived assets and other-non-operating items |  | (300) | (5,660)
Consolidated pretax income (loss) |  | 181,293 | 216,136
Mortgage segment |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Total Operating Expenses Allocated to Subsidiaries From Parent Company |  | 29,100 | 25,600
Depreciation |  | 3,700 | 3,900
Adjusted pretax operating income (loss) | [1] | 205,667 | 203,631
Real Estate segment |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Total Operating Expenses Allocated to Subsidiaries From Parent Company |  | 3,800 | 2,800
Depreciation |  | 700 | 600
Adjusted pretax operating income (loss) | [2] | (4,867) | (3,925)
All Other activities segment |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Adjusted pretax operating income (loss) |  | $ 3,799 | $ 2,364
[1] | For the three months ended March 31, 2020, includes allocated corporate operating expenses and depreciation expense of $29.1 million and $3.7 million, respectively. For the three months ended March 31, 2019, includes allocated corporate operating expenses and depreciation expense of $25.6 million and $3.9 million, respectively.
[2] | For the three months ended March 31, 2020, includes allocated corporate operating expenses and depreciation expense of $3.8 million and $0.7 million, respectively. For the three months ended March 31, 2019, includes allocated corporate operating expenses and depreciation expense of $2.8 million and $0.6 million, respectively.

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- Definition This concept represents the gains and losses on investments and other financial instruments for the period excluding the impact of changes in the present value of insurance claims and recoveries on insured credit derivatives and VIEs, based on the company's ongoing insurance loss monitoring, which are a component of segment expenses. Also includes other than temporarily impaired losses recognized in earnings. + References No definition available. + Details
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- Definition This concept represents the adjusted pre-tax operating income (loss) for segment reporting (non GAAP) and only includes the revenue and expense items that management considers in assessing the performance of the segment businesses. + References No definition available. + Details
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