Investments - JCP Fund V - Narrative (Details) - JCP Fund V - USD ($)	12 Months Ended
	Nov. 30, 2017	Nov. 30, 2016
Schedule of Equity Method Investments [Line Items]
Investment amount	$ 19,600,000	$ 29,100,000
Unfunded portion of equity commitment to subsidiary	$ 10,100,000	11,300,000
Percent of financial information presented	100.00%
Ownership percentage	35.20%
Maximum
Schedule of Equity Method Investments [Line Items]
Total committed equity capitalization	$ 85,000,000.0	$ 85,000,000.0