Investments - Net Realized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Gain (Loss) on Investments
Credit losses on securities not previously recorded	$ 2,927
Other Net Realized Gain (Loss) on Investments	(4,198)	$ 142
Net realized gain (loss) on Investments	(6,861)	22
Reciprocal Exchanges
Gain (Loss) on Investments
Net realized gain (loss) on Investments	(793)	(744)
NGHC, excluding Reciprocal Exchanges
Gain (Loss) on Investments
Net realized gain (loss) on Investments	(6,068)	766
Debt securities
Gain (Loss) on Investments
Debt securities, available-for-sale, gross gains	273	136
Debt securities, available-for-sale, gross losses	(9)	(256)
Credit losses on securities not previously recorded	2,927	0
Net realized loss on debt securities, available-for-sale	$ (2,663)	$ (120)

Other Net Realized Gain (Loss) on Investments

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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

+ References

No definition available.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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- Definition

Amount of expense for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), for which no credit loss was previously recorded.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922900-210455

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Amount of realized and unrealized gain (loss) on investment.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-Section S99
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
-Paragraph 28
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-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

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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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