Calculation of Net Loss and Weighted Average Common Shares and Common Equivalent Shares Outstanding for Computation of Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net loss	$ (3,672)	$ 707	$ (5,853)	$ (4,796)	$ (4,729)	$ (9,480)	$ (8,818)	$ (19,005)
Less: Loss allocable to unvested restricted stock	(12)
Loss attributable to common shareholders for diluted earnings per share	$ (3,684)			$ (4,796)			$ (8,818)	$ (19,005)
Weighted average common shares outstanding:
Common shares used in basic loss per share	13,405,504			13,266,316			13,381,789	13,244,242
Total weighted average common shares and common share equivalents used in diluted loss per share	13,405,504			13,266,316			13,381,789	13,244,242
Loss per share:
Basic	$ (0.27)			$ (0.36)			$ (0.66)	$ (1.43)
Diluted	$ (0.27)			$ (0.36)			$ (0.66)	$ (1.43)