Investments in Marketable Securities and Unconsolidated Entities - Income (Loss), Impairments From, and Equity In Investments In Unconsolidated Entities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Income from unconsolidated entity activity	$ 142	$ 319
Equity in income of unconsolidated entities - continuing operations	$ 142	$ 319