Supporting Financial Information - Accounts Payable, Accrued Expense and Other Current Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2017	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Document Fiscal Year Focus	2017
Accounts payable	$ 5,714	$ 4,324
Accrued benefits	1,194	1,197
Accrued bonus and incentive compensation	173	508
Accrued workers compensation insurance	1,035	981
Other accrued expenses	595	126
Total accrued expenses and other current liabilities	$ 8,711	$ 7,136