Fair Values of Assets and Liabilities (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Alternative Investments Fair Value Disclosure	$ 79,425	[1]	$ 89,698	[1]
Unfunded Commitments	25,575
Assets valued using net asset value as practical expedient - Level 2	31.00%		32.00%
Assets at fair value using net asset as practical expedient - Level 3	69.00%		68.00%
Funds-Of-Hedge Funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Alternative Investments Fair Value Disclosure	34,771	[2]	38,811	[2]
Percentage of Monthly Redemption	40.00%		49.00%
Percentage of Quarterly Redemption	60.00%		51.00%
Hedge Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Alternative Investments Fair Value Disclosure	19,461		24,716
Unfunded Commitments	20,000
Private Equity Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Alternative Investments Fair Value Disclosure	22,759	[3]	23,763	[3]
Unfunded Commitments	5,575
Investments Remaining Term, High End of Range	9 years 0 days
Other Investments [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Alternative Investments Fair Value Disclosure	$ 2,434	[4]	$ 2,408	[4]
Percentage of Redemption, Investment Funds, With Less Than One Year	10.00%
Percentage of Investment of 19 Year Redemption	90.00%
Investments Remaining Term, Category One	1 year 0 months
Investments Remaining Term, Category Two	19 years 0 months

[1] Comprised of approximately 31% and 69% of Level 2 and Level 3 assets, respectively, as of March 31, 2014 and 32% and 68% of Level 2 and Level 3 assets, respectively, as of March 31, 2013.

[2] 40% monthly redemption and 60% quarterly redemption as of March 31, 2014. 49% monthly redemption and 51% quarterly redemption as of March 31, 2013. Any remaining lockup expired in June 2013.

[3] Liquidations are expected over the remaining term.

[4] Of this balance, 10% has a remaining term of less than one year and 90% has a remaining term of 19 years.