Document and Entity Information
| Document and Entity Information Document | Apr. 29, 2020$ / shares |
| Document Information | |
| Entity Central Index Key | 0001578735 |
| Amendment Flag | false |
| Document Type | 8-K |
| Document Period End Date | Apr. 29, 2020 |
| Entity Registrant Name | NATIONAL GENERAL HOLDINGS CORP. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-36311 |
| Entity Tax Identification Number | 27-1046208 |
| Entity Address, Address Line One | 59 Maiden Lane |
| Entity Address, Address Line Two | 38th Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10038 |
| City Area Code | 212 |
| Local Phone Number | 380-9500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Listing, Par Value Per Share | $ 0.01 |
| Entity Emerging Growth Company | false |
| Common Stock, par value $0.01 per share | |
| Document Information | |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | NGHC |
| Security Exchange Name | NASDAQ |
| 7.50% Non-Cumulative Preferred Stock, Series A | |
| Document Information | |
| Title of 12(b) Security | 7.50% Non-Cumulative Preferred Stock, Series A |
| Trading Symbol | NGHCP |
| Security Exchange Name | NASDAQ |
| Depositary Shares, Representing 1/40th of a Share of 7.50% Non-Cumulative Preferred Stock, Series B | |
| Document Information | |
| Title of 12(b) Security | Depositary Shares, Representing 1/40th of a Share of 7.50% Non-Cumulative Preferred Stock, Series B |
| Trading Symbol | NGHCO |
| Security Exchange Name | NASDAQ |
| Depositary Shares, Representing 1/40th of a Share of 7.50% Non-Cumulative Preferred Stock, Series C | |
| Document Information | |
| Title of 12(b) Security | Depositary Shares, Representing 1/40th of a Share of 7.50% Non-Cumulative Preferred Stock, Series C |
| Trading Symbol | NGHCN |
| Security Exchange Name | NASDAQ |
| 7.625% Subordinated Notes due 2055 | |
| Document Information | |
| Title of 12(b) Security | 7.625% Subordinated Notes due 2055 |
| Trading Symbol | NGHCZ |
| Security Exchange Name | NASDAQ |