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Note 3 - Segment Reporting Reconciliation of Segment to Consolidated Results Pretax (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Adjusted pretax operating income (loss) |  | $ 164,103 | $ 125,281 |
Net gains (losses) on investments and other financial instruments |  | (18,887) | (2,851) |
Loss on induced conversion and debt extinguishment |  | 0 | (4,456) |
Acquisition-related (expenses) benefits | [1] | 0 | (8) |
Increase (Decrease) in Goodwill and Intangible Assets |  | (2,748) | (3,296) |
Impairment of Long-Lived Assets Held-for-use | [2] | (26) | 0 |
Pretax income |  | 142,442 | 114,670 |
Mortgage Insurance Segment |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Adjusted pretax operating income (loss) | [3] | 171,711 | 134,633 |
Mortgage and Real Estate Services Segment [Member] |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Adjusted pretax operating income (loss) | [3] | (7,608) | $ (9,352) |
Goodwill, Impairment Loss |  | $ 0 |  | $ (184,374)
[1] | Acquisition-related expenses represent expenses incurred to effect the acquisition of a business, net of adjustments to accruals previously recorded for acquisition expenses.
[2] | Included within restructuring and other exit costs. See Note 1.
[3] | Includes inter-segment expenses and revenues as listed in the notes to the preceding tables.

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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 element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + Details
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