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, 2018	Sep. 30, 2017
Accounting Policies [Abstract]
Net loss	$ (7,170)	$ (14,209)
Weighted-average common shares outstanding (basic and diluted) (in shares)	5,523	5,487
Net loss per share – basic and diluted:
Net Loss per share (basic and diluted) (in dollars per share)	$ (1.30)	$ (2.59)
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares)	144	93