Goodwill and Other Intangible Assets - Classification of Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense in continuing operations	$ 5,690	$ 5,317	$ 3,402
Amortization expense in discontinued operations	583	1,976	1,859
Operations expense	103	111	108
Interest expense	4,150	5,137	3,208
Total expense from the amortization of definite-lived intangible assets	$ 10,526	$ 12,541	$ 8,577