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v3.20.4

Note 2 - Significant Accounting Policies - Level 4 (Details) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($) payment segment group | Dec. 31, 2019 USD ($) $ / shares | Dec. 31, 2018 USD ($)
Losses and LAE Mortgage Insurance [Abstract] |  |  |
Number Of Payments Missed For Insured Loans | payment | 2 |  |
Second-Lien Reserve for Premium Deficiency | $ 100 | $ 200 |
Percent of LTV at which HPA Must Be Canceled Automatically | 0.78 |  |
Investments [Abstract] |  |  |
Number of Investment Categories | group | 3 |  |
Maximum Maturity Duration for Short Term Investment Grouping | 12 months |  |
Number of Reportable Segments | segment | 2 |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Depreciation, Depletion and Amortization | $ 18,300 | 20,800 | $ 19,400
Property, Plant and Equipment, Gross | 234,486 | 229,813 |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment | (154,029) | (141,934) |
Property and equipment | 80,457 | 87,879 |
2018 Award Year | Timed-vested RSUs (Equity settled) |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  | 3 years
Internal-use software |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property, Plant and Equipment, Gross | 136,033 | 131,854 |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment | (81,724) | (73,498) |
Property and equipment | 54,309 | 58,356 |
Furniture and equipment |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property, Plant and Equipment, Gross | 65,478 | 65,087 |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment | (56,697) | (55,027) |
Property and equipment | 8,781 | 10,060 |
Leasehold improvements |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property, Plant and Equipment, Gross | 32,975 | 32,872 |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment | (15,608) | (13,409) |
Property and equipment | $ 17,367 | 19,463 |
Real Estate Segment |  |  |
Investments [Abstract] |  |  |
Number of Reportable Segments | segment | 1 |  |
Minimum |  |  |
Losses and LAE Mortgage Insurance [Abstract] |  |  |
Number Of Payments Missed For Insured Loans | payment | 2 |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property, Plant and Equipment, Useful Life | 3 years |  |
Minimum | 2018 Award Year | Performance-based RSUs (Equity settled) |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Post-Vesting Holding Period |  |  | 1 year
Minimum | 2018 Award Year | Timed-vested RSUs (Equity settled) |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  | 1 year
Maximum |  |  |
Losses and LAE Mortgage Insurance [Abstract] |  |  |
Lessee, Operating Lease, Term of Contract | 12 months |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property, Plant and Equipment, Useful Life | 7 years |  |
Mortgage segment |  |  |
Losses and LAE Mortgage Insurance [Abstract] |  |  |
Number of Mortgage Insurance Product Categories | group | 2 |  |
Premium receivable for deferred monthly premiums | $ 29,700 | 17,400 |
Contractual deferred monthly premiums | $ 77,000 | 78,400 |
Increase in Net Premium Earned |  | $ 32,900 |
Increase in Net Premiums Earned Per Share | $ / shares |  | $ 0.12 |

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