Investments - JCP Fund V - Narrative (Details) - JCP Fund V [Member] - USD ($)	6 Months Ended
	May 31, 2017	Nov. 30, 2016
Schedule of Equity Method Investments [Line Items]
Investments in managed funds	$ 21,400,000	$ 29,100,000
Unfunded portion of equity commitment to subsidiary	$ 11,100,000	11,500,000
Percent of financial information presented	100.00%
Ownership percentage	35.20%
Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Total committed equity capitalization	$ 85,000,000	$ 85,000,000