INVESTMENT OPERATIONS - Schedule of Amortized Cost and Fair Value of the Company's Investments Classified as Held-to-Maturity (Details) - Successor - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Investment [Line Items]
Fair Value	$ 2,853,788	$ 515,000
Fixed maturities
Investment [Line Items]
Amortized Cost	2,779,280	593,314
Gross Unrealized Gains	97,387	0
Gross Unrealized Losses	(22,879)	(78,314)
Fair Value	2,853,788	515,000
Fixed maturities \| Red Mountain
Investment [Line Items]
Amortized Cost	626,280	593,314
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(22,879)	(78,314)
Fair Value	603,401	$ 515,000
Fixed maturities \| Steel City
Investment [Line Items]
Amortized Cost	2,153,000
Gross Unrealized Gains	97,387
Gross Unrealized Losses	0
Fair Value	$ 2,250,387

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Amount of accumulated unrealized gain on investments in debt securities classified as held-to-maturity.

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Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity.

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Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Fair value of investments in debt securities classified as held-to-maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

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