Related Party Transactions - Summary of Interest Income, Other Revenues and Investment Income to Private Equity Related Funds (Detail) - Private Equity Related Funds [Member] - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Feb. 28, 2013	Nov. 30, 2013	Nov. 30, 2015	Nov. 30, 2014
Successor [Member]
Related Party Transaction [Line Items]
Interest income		$ 852	$ 0	$ 0
Other revenues and investment income (loss)		$ 9,294	$ (26,179)	$ (14,868)
Predecessor [Member]
Related Party Transaction [Line Items]
Interest income	$ 516
Other revenues and investment income (loss)	$ 947