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Note 3 - Segment Reporting Schedule of Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |  |  |
Net premiums earned-insurance |  | $ 242,550 | $ 221,800 |
Services revenue |  | 33,164 | 38,027 |
Net investment income |  | 33,956 | 31,032 |
Other income |  | 807 | 746 |
Policy acquisition costs |  | 7,117 | 6,729 |
Cost of services |  | 23,126 | 28,375 |
Other operating expenses before corporate allocations |  | 63,243 | 68,377 |
Restructuring and other exit costs |  | 551 | 0 |
Adjusted pretax operating income (loss) |  | 164,103 | 125,281 |
Net gains (losses) on investments and other financial instruments |  | (18,887) | (2,851) |
Total assets |  | 6,010,249 |  | $ 5,900,881
Mortgage Insurance Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written—insurance | [1] | 237,980 | 224,665 |
(Increase) decrease in unearned premiums |  | 4,570 | (2,865) |
Net premiums earned-insurance |  | 242,550 | 221,800 |
Net investment income |  | 33,956 | 31,032 |
Other income |  | 807 | 746 |
Total | [2] | 277,313 | 253,578 |
Provision for losses |  | 37,391 | 47,232 |
Policy acquisition costs |  | 7,117 | 6,729 |
Other operating expenses before corporate allocations |  | 31,888 | 39,289 |
Total | [3] | 76,396 | 93,250 |
Adjusted pretax operating income (loss) before corporate allocations |  | 200,917 | 160,328 |
Allocation of corporate operating expenses |  | 18,577 | 14,186 |
Allocation of interest expense |  | 10,629 | 11,509 |
Adjusted pretax operating income (loss) | [4] | 171,711 | 134,633 |
Inter-segment expenses |  | 1,002 | 2,062 |
Total assets |  | 5,843,685 |  | 5,733,918
Mortgage and Real Estate Services Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill, Impairment Loss |  | 0 |  | (184,374)
Services revenue | [5],[6] | 34,166 | 40,089 |
Cost of services |  | 23,270 | 28,690 |
Other operating expenses before corporate allocations |  | 10,744 | 12,604 |
Restructuring and other exit costs | [7] | 525 | 0 |
Total |  | 34,539 | 41,294 |
Adjusted pretax operating income (loss) before corporate allocations |  | (373) | (1,205) |
Allocation of corporate operating expenses |  | 2,784 | 3,718 |
Allocation of interest expense |  | 4,451 | 4,429 |
Adjusted pretax operating income (loss) | [4] | (7,608) | (9,352) |
Inter-segment revenues |  | 1,002 | $ 2,062 |
Total assets |  | 166,564 |  | $ 166,963
Investments and Cash |  | 0 |  |
Senior Notes [Member] | Senior Notes Due 2019 [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Debt Instrument, Face Amount |  | $ 300,000 |  |
[1] | Net of ceded premiums written under the QSR Transactions and the Single Premium QSR Transactions. See Note 7 for additional information.
[2] | Excludes net losses on investments and other financial instruments of $18.9 million for the three months ended March 31, 2018, and net losses on investments and other financial instruments of $2.9 million for the three months ended March 31, 2017, not included in adjusted pretax operating income.
[3] | Includes inter-segment expenses as follows: Three Months EndedMarch 31,(In thousands)2018 2017Inter-segment expenses$1,002 $2,062
[4] | Includes inter-segment expenses and revenues as listed in the notes to the preceding tables.
[5] | Includes inter-segment revenues as follows: Three Months EndedMarch 31,(In thousands)2018 2017Inter-segment revenues$1,002 $2,062
[6] | Includes inter-segment revenues of $1.0 million and $2.1 million for the three months ended March 31, 2018 and 2017, respectively. See Note 3 for segment information.
[7] | Primarily includes employee severance and related benefit costs. Does not include impairment of long-lived assets, which is not a component of adjusted pretax operating income.

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