CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Deficit
Beginning Balance (shares) at Sep. 30, 2018		11,899	0
Beginning Balance at Sep. 30, 2018	$ 39,418	$ 12	$ 0	$ 84,285	$ (44,879)
Stock-based compensation (in shares)		102
Stock-based compensation	131			131
Expense related to employee stock options	62			62
Exercise of stock options (shares)		35
Exercise of stock options	39			39
Net income	1,690				1,690
Ending Balance (shares) at Dec. 31, 2018		12,036	0
Ending Balance at Dec. 31, 2018	$ 41,340	$ 12	$ 0	84,517	(43,189)
Beginning Balance (shares) at Sep. 30, 2019	11,899	12,036	0
Beginning Balance at Sep. 30, 2019	$ 45,571	$ 12	$ 0	85,114	(39,555)
Stock-based compensation (in shares)		90
Stock-based compensation	87			87
Expense related to employee stock options	$ 116			116
Exercise of stock options (shares)	20	20
Exercise of stock options	$ 27			27
Repurchases of common stock (in shares)			27
Repurchases of common stock	$ 111		$ 111
Cancellation of common stock (in shares)	(22)
Cancellation of common stock	$ (95)
Net income	$ 1,551				1,551
Ending Balance (shares) at Dec. 31, 2019	12,036	12,124	27
Ending Balance at Dec. 31, 2019	$ 47,144	$ 12	$ (111)	$ 85,249	$ (38,006)