Variable Interest Entities and Consolidation of Investment Vehicles Information about Investments in CIV's (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Dec. 31, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014	Dec. 31, 2015 USD ($)
Variable Interest Entity
Employee Owned Funds	14	17	16	14
Variable Interest Entity, Number of Collateralized Securites Vehicles	0	0	0	0
Variable Interest Entity, Primary Beneficiary, Number of Collateralized Securites Vehicles	2	2	2	2
Number of Sponsored Investment Fund Vie	1	1	1	1
Variable Interest Entity Controlling Financial Interest Number of Sponsored Investment Fund Vres	0	0	1	0
Consolidated Investment Vehicles [Member]
Variable Interest Entity
Investments	$ 14,355	$ 15,553		$ 14,355