Goodwill and Other Intangible Assets - Amount and Classification of Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense in continuing operations	$ 1,368	$ 1,393	$ 2,825	$ 2,758
Amortization expense in discontinued operations	0	582	0	1,157
Operations expense	26	31	52	61
Interest expense	992	1,660	2,625	2,550
Total expense from the amortization of definite-lived intangible assets	$ 2,386	$ 3,666	$ 5,502	$ 6,526