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Note 4 - Segment Reporting Reconciliation of Segment to Consolidated Results Pretax (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 USD ($) customer | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) customer | Sep. 30, 2014 USD ($) | Jun. 30, 2014 USD ($) | Mar. 31, 2014 USD ($) | Dec. 31, 2015 USD ($) customer | Dec. 31, 2014 USD ($) customer | Dec. 31, 2013 USD ($) customer
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss) Pre-Tax Non-GAAP |  |  |  |  |  |  |  |  |  | $ 510,894 | $ 342,382 |  | $ (67,435)
Net Gains (Losses) on Investments and Other Financial Instruments | [1] |  |  |  |  |  |  |  |  | 35,693 | 80,102 |  | (105,911)
Loss on Induced Conversion and Extinguishment of Debt |  | $ (2,320) | $ (11) | $ (91,876) | $ 0 |  |  |  |  | (94,207) | 0 |  | 0
Business Combination, Acquisition Related Costs |  |  |  |  |  |  |  |  |  | (1,565) | (6,680) |  | 0
Increase (Decrease) in Goodwill and Intangible Assets |  | $ (3,409) | $ (3,273) | $ (3,281) | $ (3,023) | $ (5,354) | $ (3,294) | $ 0 | $ 0 | (12,986) | (8,648) |  | 0
Pretax Income (Loss) from Continuing Operations Attributable to Parent |  |  |  |  |  |  |  |  |  | 437,829 | 407,156 |  | (173,346)
Change in Fair Value of Derivative Instruments Expected to Reverse Over Time |  |  |  |  |  |  |  |  |  |  | 100 |  | 600
Mortgage Insurance Segment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss) Pre-Tax Non-GAAP | [2] |  |  |  |  |  |  |  |  | 513,127 | $ 336,936 |  | $ (67,435)
Entity Wide Revenue, Major Customer, Number of Customers | customer |  |  |  |  |  | 1 |  |  |  |  | 1 |  | 1
Mortgage and Real Estate Services Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss) Pre-Tax Non-GAAP | [2] |  |  |  |  |  |  |  |  | $ (2,233) | $ 5,446 | [3] | $ 0
Geographic Concentration Risk [Member] | CALIFORNIA | Primary Risk In Force [Member] | Mortgage Insurance Segment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  | 12.80% | 13.70% |  |
Geographic Concentration Risk [Member] | CALIFORNIA | New Insurance Written [Member] | Mortgage Insurance Segment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  | 15.20% | 17.20% |  | 18.40%
Minimum [Member] | Geographic Concentration Risk [Member] | CALIFORNIA | Primary Risk In Force [Member] | Mortgage Insurance Segment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  | 10.00% |  |  |
Customer A [Member] | Customer Concentration Risk [Member] | New Insurance Written [Member] | Mortgage Insurance Segment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  | 4.60% | 4.00% |  | 5.80%
Customer B [Member] | Earned Premium Benchmark, Amount [Member] | Mortgage Insurance Segment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Entity Wide Revenue, Major Customer, Number of Customers | customer |  | 1 |  |  |  |  |  |  |  | 1 |  |  |
Customer B [Member] | Customer Concentration Risk [Member] | Earned Premium Benchmark, Amount [Member] | Mortgage Insurance Segment |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  | 16.00% | 19.00% |  | 21.00%
[1] | The change in expected economic loss or recovery associated with our previously owned VIEs is included in adjusted pretax operating income above, although it represents amounts that are not included in net income. Therefore, for purposes of this reconciliation, net gains (losses) on investments and other financial instruments has been adjusted by income of $0.1 million and $0.6 million for the years ended December 31, 2014 and 2013, respectively, to reverse this item.
[2] | Includes inter-segment expenses and revenues as listed in the notes to the preceding tables.
[3] | Includes the acquisition of Clayton, effective June 30, 2014.

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