|
Separate Accounts (Details) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] | ||
| Reserves | $ 4,350,995 | $ 4,032,895 |
| By withdrawal characteristics: Subject to discretionary withdrawal at fair value | 4,350,995 | 4,032,895 |
| Total reserves | 4,350,995 | 4,032,895 |
|
Premiums, considerations or deposits
|
||
| Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] | ||
| Reserves | 240,965 | 363,169 |
|
Reserves: For accounts with assets values at fair value
|
||
| Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] | ||
| Reserves | $ 4,350,995 | $ 4,032,895 |