Line items represent reporting 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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The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of marketable securities and/or any unrealized gains or losses on investments that are separately or otherwise not categorized as trading, available-for-sale or held-to-maturity.

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Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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-Section S99
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This item represents the total realized gain (loss) included in earnings for the period as a result of selling marketable securities categorized as trading, available-for-sale, or held-to-maturity and any gains or 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. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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INVESTMENTS - Realized and Unrealized Gains (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
INVESTMENTS
Net realized gains (losses), excluding OTTI									$ 39,829	$ 32,182	$ 22,036
Realized Gain (Loss) on Marketable Securities, Cost Method Investments and Other Investments, Total	$ 14,207	$ 7,534	$ 4,802	$ 13,286	$ 9,542	$ 5,708	$ 10,431	$ 6,501	39,829	32,182	22,036
Net changes in unrealized gains (losses) on investments:									(72,935)	54,393	(10,973)
Net realized gains (losses) and changes in unrealized gains (losses) on investments									(33,106)	86,575	11,063
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal									6,698
Debt securities \| Available for sale securities
INVESTMENTS
Net realized gains (losses), excluding OTTI									10,832	3,955	1,338
Net changes in unrealized gains (losses) on investments:									(26,929)	37,880	(75,228)
Debt securities \| Held-to-maturity Securities
INVESTMENTS
Net realized gains (losses), excluding OTTI										4	9
Equity securities
INVESTMENTS
Net realized gains (losses), excluding OTTI									22,107	29,468	21,533
Net changes in unrealized gains (losses) on investments:									(44,120)	17,300	64,305
Other
INVESTMENTS
Net realized gains (losses), excluding OTTI									192	(1,245)	(844)
Equity Method Investments [Member]
INVESTMENTS
Net changes in unrealized gains (losses) on investments:									$ (1,886)	$ (787)	$ (50)