A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain member defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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- References

No definition available.

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Glossary Income Tax Expense (or Benefit)
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- Definition

Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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- Definition

Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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- Definition

Amount after tax of other comprehensive income (loss) attributable to parent entity.

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- Definition

Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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- Definition

The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

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- Definition

This item represents the net total realized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain or loss of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain or loss which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and/or investments that are separately or otherwise not categorized as trading, available-for-sale, or held-to-maturity.

+ References

No definition available.

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Changes in Accumulated Other Comprehensive Earnings (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
COMPREHENSIVE EARNINGS
Tax rate used (as a percent)									35.00%	35.00%	35.00%
Other comprehensive income (loss), tax									$ 19,000	$ (600)	$ (25,300)
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance				$ 122,610					122,610
Net current-period other comprehensive earnings (loss)									35,309	(1,164)	(47,609)
Ending balance	$ 157,919				$ 122,610				157,919	122,610
Relassification Adjustment Out of Accumulated Other Comprehensive Income Abstract
Net realized gains									6,970	34,740	39,829
Earnings (loss) before income taxes	24,972	$ (862)	$ 34,036	26,443	38,006	$ 31,142	$ 42,341	$ 45,593	84,589	157,082	196,682
Income tax expense									20,439	(42,162)	(59,138)
Net earnings	57,258	$ 1,734	$ 26,208	19,828	32,187	$ 22,263	$ 29,077	31,393	105,028	114,920	137,544
Unrealized Gains and Losses on Available-for-Sale Securities
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance				$ 122,610				$ 123,774	122,610	123,774	171,383
Other comprehensive earnings before reclassifications									40,887	26,740	(26,199)
Amounts reclassified from accumulated other comprehensive earnings									(5,578)	(27,904)	(21,410)
Net current-period other comprehensive earnings (loss)									35,309	(1,164)	(47,609)
Ending balance	$ 157,919				$ 122,610				157,919	122,610	123,774
Reclassifications out of accumulated other comprehensive earnings
Relassification Adjustment Out of Accumulated Other Comprehensive Income Abstract
Net realized gains									11,141	43,024	32,939
Other-than-temporary impairment (OTTI) losses on investments									(2,559)	(95)
Earnings (loss) before income taxes									8,582	42,929	32,939
Income tax expense									(3,004)	(15,025)	(11,529)
Net earnings									$ 5,578	$ 27,904	$ 21,410