Business Disposition (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Business Disposition
Loss on sale of assets		$ (7,963)
Other assets	$ 12,016	12,748
Prepaid expenses and other current assets	9,063	7,826
Jacobs Trading Company
Business Disposition
Other assets	11,300
Prepaid expenses and other current assets	$ 1,000
Jacobs Trading Company | Disposed of by sale
Business Disposition
Promissory note term	5 years
Carrying value of net assets disposed		22,920
Carrying value of net liabilities disposed		(2,707)
Net Assets And Liabilities Of Disposal Group Including Discontinued Operation		20,213
Buyer issued note		(12,250)
Loss on sale of assets		$ 7,963