Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net loss attributable to common shareholders	$ (3,064)	$ (1,953)	$ (14,661)	$ (1,718)	$ (5,017)	$ (16,379)
Basic and diluted (in shares)	12,416,594		10,423,514		12,281,721	10,392,404
Basic and diluted loss per common share (in dollars per share)	$ (0.25)		$ (1.41)		$ (0.41)	$ (1.58)