Consolidated Statements of Income & Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Operating revenues	$ 20,571	$ 20,228
Cost of operations:
Compensation and benefits	9,084	9,051
Fuel expenses	2,718	2,098
Repairs & tires	1,216	1,381
Other operating	744	813
Insurance and losses	1,810	2,122
Depreciation expense	1,477	1,745
Rents, tags & utilities	673	696
Sales, general & administrative	2,465	2,136
Corporate expenses	533	401
Gain on sale of terminal sites	(8,330)	0
(Gain) Loss on disposition of PP&E	(360)	86
Total cost of operations	12,030	20,529
Total operating profit (loss)	8,541	(301)
Interest income and other	1	2
Interest expense	(5)	(8)
Income (loss) before income taxes	8,537	(307)
Provision for (benefit from) income taxes	2,098	(85)
Net income (loss)	6,439	(222)
Comprehensive Income (loss)	$ 6,439	$ (222)
Earnings per common share:
Basic	$ 1.88	$ (0.07)
Diluted	$ 1.74	$ (0.07)
Number of shares (in thousands) used in computing:
-basic earnings per common share	3,419	3,377
-diluted earnings per common share	3,701	3,377