Schedule of Remaining Intangible Amortization (Details 3) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016	Mar. 31, 2018	Mar. 31, 2017
Finite-Lived Intangible Assets Future Amortization Expense [Line Items]
2018				$ 25,022
2020				24,245
Finite-Lived Intangible Assets, Amortization Expense, Year Four				23,414
2021				23,065
Finite-Lived Intangible Assets, Amortization Expense, Next Rolling Twelve Months				20,270
Thereafter				42,904
Total				$ 158,920	$ 213,654
Finite-Lived Intangible Asset, Useful Life	7 years 73 days
Fair Value, Inputs, Level 3 [Member] | Asset Management Contracts
Finite-Lived Intangible Assets Future Amortization Expense [Line Items]
Fair Value Inputs, Long-term AUM Growth Rate		7.00%	7.00%
Fair Value Inputs, Attrition Rate		20.00%	13.00%