|
Investments - Major Categories of Investment Income (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Net Investment Income [Line Items] | |||
| Investment income | $ 5,123 | $ 5,716 | $ 6,599 |
| Investment expenses | (489) | (576) | (619) |
| Fixed maturities, available-for-sale [Member] | |||
| Net Investment Income [Line Items] | |||
| Investment income | 4,481 | 4,914 | 6,434 |
| Mutual funds, available-for-sale [Member] | |||
| Net Investment Income [Line Items] | |||
| Investment income | 832 | 766 | 613 |
| Other investments [Member] | |||
| Net Investment Income [Line Items] | |||
| Investment income | 85 | 399 | |
| Other [Member] | |||
| Net Investment Income [Line Items] | |||
| Investment income | $ 214 | $ 213 | $ 171 |