Supporting Financial Information - Accounts Payable, Accrued Expense and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts payable	$ 5,205	$ 4,324
Accrued benefits	1,831	1,197
Accrued bonus and incentive compensation	1,544	508
Accrued workers compensation insurance	1,598	981
Other accrued expenses	717	126
Accounts payable, accrued expenses, and other current liabilities	$ 10,895	$ 7,136