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Balance Sheet Parentheticals (Parentheticals) - USD ($) shares in Thousands, $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Fixed-maturities available for sale—at amortized cost | $ 4,369,273 | $ 4,098,962
Debt Securities, Trading, Amortized Cost | 307,981 | 468,696
Available-for-sale Equity Securities, Amortized Cost Basis | 119,408 | 139,377
Reinvested cash collateral held under securities lending agreements | $ 34,767 | $ 11,699
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |
Common Stock, Par or Stated Value Per Share | $ 0.001 | $ 0.001
Common Stock, Shares Authorized | 485,000 | 485,000
Common Stock, Shares, Issued | 220,174 | 231,132
Common Stock, Shares, Outstanding | 202,219 | 213,473
Treasury Stock, Shares | 17,955 | 17,660

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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 + Details
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- Definition The carrying value as of the balance sheet date of the assets received as collateral against securities loaned to other broker-dealers. Borrowers of securities generally are required to provide collateral to the lenders of securities, commonly cash but sometimes other securities or standby letters of credit, with a value slightly higher than that of the securities borrowed. In instances where the entity is permitted to sell or re-pledge these securities, the entity reports the fair value of the collateral received and the related obligation to return the collateral as a liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 10 -Section 05 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=109246787&loc=d3e93645-111703 + Details
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