|
Investments - Fair Value and Gross Unrealized Losses of Fixed Maturity Securities in Continuous Unrealized Loss Position for Greater than 12 Months (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
Security
|
Dec. 31, 2013
Security
|
|---|---|---|
| Schedule of Available-for-sale Securities [Line Items] | ||
| Number of Securities | 9 | 7 |
| Fair Value | $ 20,567 | $ 13,980 |
| 12 months or longer, Gross Unrealized Losses | (592) | (1,270) |
| Less Than or Equal to 10% [Member] | ||
| Schedule of Available-for-sale Securities [Line Items] | ||
| Number of Securities | 9 | 7 |
| Fair Value | 20,567 | 13,980 |
| 12 months or longer, Gross Unrealized Losses | $ (592) | $ (1,270) |