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Investments - Fair Value and Gross Unrealized Losses of Investments, Available-for-Sale, by the Length of Time (Detail) (USD $)
In Thousands, unless otherwise specified
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Dec. 31, 2014
|
Dec. 31, 2013
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Less than 12 months, Fair value |
$ 17,505 |
$ 23,941 |
| Less than 12 months, Gross Unrealized Losses |
(90) |
(1,021) |
| 12 months or longer, Fair value |
20,567 |
13,980 |
| 12 months or longer, Gross Unrealized Losses |
(592) |
(1,270) |
| Total Gross Unrealized Losses |
(682) |
(2,291) |
| U.S. Government and Agencies [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Less than 12 months, Fair value |
5,012 |
988 |
| Less than 12 months, Gross Unrealized Losses |
(26) |
(16) |
| Total Gross Unrealized Losses |
(26) |
(16) |
| Revenue and Assessment [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Less than 12 months, Fair value |
2,820 |
983 |
| Less than 12 months, Gross Unrealized Losses |
(18) |
(11) |
| Total Gross Unrealized Losses |
(18) |
(11) |
| Corporate Bonds [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Less than 12 months, Fair value |
7,681 |
21,781 |
| Less than 12 months, Gross Unrealized Losses |
(38) |
(993) |
| 12 months or longer, Fair value |
20,567 |
13,980 |
| 12 months or longer, Gross Unrealized Losses |
(592) |
(1,270) |
| Total Gross Unrealized Losses |
(630) |
(2,263) |
| Non-Agency Backed - Residential [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Less than 12 months, Fair value |
|
189 |
| Less than 12 months, Gross Unrealized Losses |
|
(1) |
| Total Gross Unrealized Losses |
|
(1) |
| Total Fixed Maturities, Available-for-Sale [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Less than 12 months, Fair value |
15,513 |
23,941 |
| Less than 12 months, Gross Unrealized Losses |
(82) |
(1,021) |
| 12 months or longer, Fair value |
20,567 |
13,980 |
| 12 months or longer, Gross Unrealized Losses |
(592) |
(1,270) |
| Total Gross Unrealized Losses |
(674) |
(2,291) |
| Mutual Fund, Available-for-Sale [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Less than 12 months, Fair value |
1,992 |
|
| Less than 12 months, Gross Unrealized Losses |
(8) |
|
| Total Gross Unrealized Losses |
$ (8) |
|