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Schedule II - Primerica, Inc. (Parent Only) - Condensed Financial Information Parentheticals (Details) - USD ($) $ / shares in Units, $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
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Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |
Available-for-sale securities, debt maturities, amortized cost Basis | $ 2,078,822 | [1] | $ 1,877,326 | [2] |  |
Equity securities, at fair value, historical cost | 34,997 |  | 0 |  |  |
Trading securities, amortized cost | $ 13,597 |  | $ 6,172 |  |  |
Common stock, par value | $ 0.01 |  | $ 0.01 |  |  |
Common stock, shares authorized | 500,000,000 |  | 500,000,000 |  |  |
Common stock, shares issued | 42,694,000 |  | 44,251,000 |  |  |
Common stock, shares outstanding | 42,694,000 |  | 44,251,000 |  | 45,721,000 | 48,297,000
Parent Company [Member] |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |
Available-for-sale securities, debt maturities, amortized cost Basis | $ 108,623 |  | $ 42,812 |  |  |
Short term investments, amortized cost basis | 8,171 |  | 0 |  |  |
Equity securities, at fair value, historical cost | 1,519 |  | 0 |  |  |
Trading securities, amortized cost | $ 0 |  | $ 1,371 |  |  |
Common stock, par value | $ 0.01 |  | $ 0.01 |  |  |
Common stock, shares authorized | 500,000,000 |  | 500,000,000 |  |  |
Common stock, shares issued | 42,694,000 |  | 44,251,000 |  |  |
Common stock, shares outstanding | 42,694,000 |  | 44,251,000 |  |  |
[1] | Includes $0.1 million of OTTI losses related to corporates and mortgage- and asset-backed securities recognized in accumulated other comprehensive income (loss).
[2] | Includes $0.2 million of OTTI losses related to corporates and mortgage- and asset-backed securities recognized in accumulated other comprehensive income (loss).

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