Investments - Summary of Selected Financial Information for JCP Funds (Details) - JCP Funds [Member] - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2015
Schedule of Equity Method Investments [Line Items]
Total assets	$ 76,555		$ 84,417
Total liabilities	99		75
Total partners' capital	76,456		$ 84,342
Net increase (decrease) in net assets resulting from operations	$ (7,886)	$ (65,700)