Note 9 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2019
Loss from continuing operations	$ (14,661,081)	$ (1,211,159)	$ (16,378,773)	$ (16,378,773)	$ (2,414,470)	$ (2,414,470)
Discontinued operations, net of tax		(4,704)			159,626	$ 159,626
Net loss attributable to common shareholders	$ (14,661,081)	$ (1,215,863)	$ (16,378,773)		$ (2,254,844)
Basic (in shares)	10,423,514	10,361,292	10,392,404	10,392,404	10,361,292	10,361,292
Stock options (in shares)
Diluted weighted average shares (in shares)	10,423,514	10,361,292	10,392,404	10,392,404	10,361,292	10,361,292
Continuing operations (in dollars per share)	$ (1.41)	$ (0.12)	$ (1.58)	$ (1.58)	$ (0.24)	$ (0.24)
Discontinued operations (in dollars per share)		0			0.02	0.02
Net loss (in dollars per share)	(1.41)	(0.12)	(1.58)	(1.58)	(0.22)	(0.22)
Continuing operations (in dollars per share)	(1.41)	(0.12)	(1.58)	(1.58)	(0.24)	(0.24)
Discontinued operations (in dollars per share)		0			0.02	0.02
Net loss (in dollars per share)	$ (1.41)	$ (0.12)	$ (1.58)	$ (1.58)	$ (0.22)	$ (0.22)