Summary of Significant Accounting Policies - Dilutive Effect of The Company's Stock Options, Restricted Shares, and Performance Shares(Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Accounting Policies [Abstract]
Net loss	$ (14,209)	$ (11,335)
Weighted-average common shares outstanding (basic and diluted) (in shares)	5,487	5,475
Net loss per share – basic and diluted:
Net Loss per share (basic and diluted) (in dollars per share)	$ (2.59)	$ (2.07)
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares)	93	32