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v3.20.1

Summary of Significant Accounting Policies (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($) Subsidiary | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Principles of Consolidation [Abstract] |  |  |
Number of insurance subsidiaries owned by the parent | Subsidiary | 4 |  |
Number of non-insurance subsidiaries owned by the parent | Subsidiary | 1 |  |
Intangibles [Abstract] |  |  |
Impairment of intangible assets | $ 0 |  |
Investments: |  |  |
Estimated fair value | 0 | $ 1,066 |
Immaterial Error Correction [Abstract] |  |  |
Increase to gross unrealized holding loss, before tax | 23,130 | (13,047) |
Increase to gross unrealized holding loss, after tax | 18,273 | (10,308) |
Decrease to reclassification adjustment for net realized gains, before tax | (353) | (580) |
Decrease to reclassification adjustment for net realized gains, after tax | $ (279) | $ (458) |
Recently Issued Accounting Standards [Abstract] |  |  |
Federal corporate tax rate | 21.00% | 21.00% | 35.00%
Reduction in tax rate | 14.00% |  |
Adoption of New Accounting Pronouncements [Abstract] |  |  |
Classified distributions from equity method investees as cash flows from operating activities | $ 379 | $ 10,777 |
Revenues within scope of updated accounting guidance | 198,179 | 185,553 |
ROU asset | 5,476 |  |
Lease liability | 5,675 |  |
ASU 2016-01 [Member] | Retained Earnings [Member] |  |  |
Adoption of New Accounting Pronouncements [Abstract] |  |  |
Cumulative effect adjustment to AOCI and Retained Earnings |  |  | $ 9,825
ASU 2016-01 [Member] | Accumulated Other Comprehensive Income (Loss) [Member] |  |  |
Adoption of New Accounting Pronouncements [Abstract] |  |  |
Cumulative effect adjustment to AOCI and Retained Earnings |  |  | (9,825)
ASU 2018-02 [Member] | Retained Earnings [Member] |  |  |
Adoption of New Accounting Pronouncements [Abstract] |  |  |
Reclassification of standard tax effects on AOCI and retained earnings |  |  | (2,100)
ASU 2018-02 [Member] | Accumulated Other Comprehensive Income (Loss) [Member] |  |  |
Adoption of New Accounting Pronouncements [Abstract] |  |  |
Reclassification of standard tax effects on AOCI and retained earnings |  |  | $ 2,100
ASU 2016-15 [Member] |  |  |
Adoption of New Accounting Pronouncements [Abstract] |  |  |
Classified distributions from equity method investees as cash flows from operating activities | 379 | 10,777 |
ASU 2014-09 [Member] |  |  |
Adoption of New Accounting Pronouncements [Abstract] |  |  |
Revenues within scope of updated accounting guidance | $ 190 |  |
Revenues within scope of updated accounting guidance, as a percentage of total revenues (less than) | 0.10% |  |
ASU 2016-02 [Member] |  |  |
Adoption of New Accounting Pronouncements [Abstract] |  |  |
ROU asset |  | 6,088 |
Lease liability |  | 6,088 |
Restatement Adjustment [Member] |  |  |
Immaterial Error Correction [Abstract] |  |  |
Increase to gross unrealized holding loss, before tax |  | 6,099 |
Increase to gross unrealized holding loss, after tax |  | 4,818 |
Decrease to reclassification adjustment for net realized gains, before tax |  | (6,099) |
Decrease to reclassification adjustment for net realized gains, after tax |  | $ (4,818) |

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