Derivatives and Hedging Fair Value of Derivative Assets (Details 1) - Not Designated as Hedging Instrument [Member] - Consolidated Entity Excluding Consolidated Investment Vehicles Before Eliminations [Member] - USD ($)	Jun. 30, 2020	Jun. 30, 2019
Derivative
Derivative Asset, Fair Value, Gross Asset	$ 6,282,000	$ 4,493,000
Derivative Asset, Fair Value, Gross Liability	(2,607,000)	(1,709,000)
Derivative Asset	3,675,000	2,784,000
Derivative Asset, Not Subject to Master Netting Arrangement	498,000	1,932,000
Derivative Asset, Collateral, Obligation to Return Cash, Offset	2,752,000	2,364,000
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	6,925,000	7,080,000
Foreign Exchange Forward [Member]
Derivative
Derivative Asset, Fair Value, Gross Asset	6,282,000	4,493,000
Derivative Asset, Fair Value, Gross Liability	(2,607,000)	(1,709,000)
Derivative Asset	3,675,000	2,784,000
Derivative Asset, Not Subject to Master Netting Arrangement	0	0
Derivative Asset, Collateral, Obligation to Return Cash, Offset	0	0
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	3,675,000	2,784,000
Future [Member]
Derivative
Derivative Asset, Fair Value, Gross Asset		0
Derivative Asset, Fair Value, Gross Liability		0
Derivative Asset		0
Derivative Asset, Not Subject to Master Netting Arrangement		1,932,000
Derivative Asset, Collateral, Obligation to Return Cash, Offset		2,364,000
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		4,296,000
Total Return Swap [Member]
Derivative
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative Asset	0	0
Derivative Asset, Not Subject to Master Netting Arrangement	160,000	130,000
Derivative Asset, Collateral, Obligation to Return Cash, Offset	120,000	158,000
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	280,000	288,000
Investments [Member] | Future [Member]
Derivative
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative Asset	0	0
Derivative Asset, Not Subject to Master Netting Arrangement	338,000	1,802,000
Derivative Asset, Collateral, Obligation to Return Cash, Offset	2,632,000	2,206,000
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	$ 2,970,000	$ 4,008,000