Amount of realized gain on investment in equity security.

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Financing Receivable, Allowance For Credit Losses, Period (Increase) Decrease, Provision And Recoveries, Total

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Gain (loss) recognized during the period on the assets in our investment porfolio categorized as other investments.

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The gain resulting from sales and other disposals of other real estate owned.

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The loss resulting from sales and other disposals of other real estate owned.

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Net realized gain (loss) on investments, excluding other than temporary impairment losses

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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), excluding other-than-temporary impairment (OTTI).

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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), excluding other-than-temporary impairment (OTTI).

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Reflects the net positive or negative amount derived from subtracting from net proceeds of sale and the carrying amounts, net of allocated reserves, of financial assets transferred to third parties in transactions that qualify for sales treatment.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Investments (Net Realized Gains (Losses) on Invesments) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Gain (Loss) on Securities [Line Items]
Net realized gains (losses) on investments, excluding other than temporary impairment (OTTI) losses	$ 3,097	$ (2,196)	$ (38,381)	$ 302	$ 2,719	$ 1,579	$ 3,873	$ 2,338	$ (37,178)	$ 10,509	$ 11,524
Fixed Maturity Securities
Gain (Loss) on Securities [Line Items]
Gross realized gains									12,245	18,254	14,132
Gross realized losses									(47,974)	(9,058)	(4,036)
Available for sale fixed maturity securities: Realized gains (losses), excluding other than temporary impairment									(35,729)	9,196	10,096
Equity Securities
Gain (Loss) on Securities [Line Items]
Gross realized gains									0	348	0
Other Investments
Gain (Loss) on Securities [Line Items]
Gain on sale of real estate									0	56	884
Loss on sale of real estate									0	0	(93)
Other investments: Gain (loss) on other investments									0	56	791
Mortgage Loans on Real Estate
Gain (Loss) on Securities [Line Items]
Decrease (increase) in allowance for credit losses									(3,165)	278	(4,846)
Recovery of specific allowance									1,592	631	5,483
Gain on sale of mortgage loans									124	0	0
Change in allowance for credit losses and recoveries									$ (1,449)	$ 909	$ 637