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Federal Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Change in Net Deferred Federal Income Tax Assets | $ 46,800 |
Net loss reserve discounting | 48,193 | $ 43,285
Net unearned premiums | 57,004 | 53,556
Employee benefits | 10,646 | 8,862
Long-term incentive compensation plans | 5,727 | 9,095
Temporary investment write-downs | 1,059 | 1,155
Other | 6,478 | 5,744
Total deferred tax assets | 129,107 | 121,697
Deferred policy acquisition costs | 56,949 | 53,049
Unrealized gains on investment securities | 45,294 | 502
Other investment-related items, net | 7,576 | 4,904
Accelerated depreciation and amortization | 12,512 | 9,702
Total deferred tax liabilities | 122,331 | 68,157
Deferred federal income tax | 6,776 | $ 53,540
Investments [Member] |  |
Change in Net Deferred Federal Income Tax Assets | $ 44,800 |

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