Condensed Consolidated Unaudited Statements of Cash Flows - USD ($)	6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 6,007,238	$ 5,506,518
Adjustments to reconcile net income from operations to net cash flows from (used in) operating activities:
Depreciation	1,602,467	1,554,210
Equity method investment earnings, net of tax	(1,362,161)	(648,831)
(Gain) loss on sales of property and equipment	(76,220)	(1,374)
Equity-based compensation	1,208,655	833,624
Deferred income taxes	1,099,199	48,248
Provision for losses on doubtful accounts	(3,000)	5,000
Inventory allowance	155,534	110,769
Changes in assets and liabilities:
Accounts receivable	2,290,562	1,390,027
Inventories	4,807,756	17,772,604
Prepaid and other current assets	(651,979)	(4,096,452)
Equity method investment distributions	744,118
Other assets	(79,301)	23,327
Accounts payable	1,465,370	429,389
Accrued expenses and accrued wages, salaries and bonuses	(700,748)	(610,589)
Other long-term liabilities	(721,318)	(169,854)
Income taxes payable and receivable	(1,990,394)	(867,112)
Net cash flows from (used in) operating activities	13,795,778	21,279,504
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(974,424)	(720,567)
Proceeds from sales of property and equipment	79,000	10,938
Principal payment received on note receivable	175,000
Net cash flows from (used in) investing activities	(720,424)	(709,629)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under revolving credit facility	819,125,190	771,182,879
Repayments under revolving credit facility	(827,584,508)	(791,045,384)
Proceeds from borrowings on long-term debt		3,000,000
Principal payments on long-term debt	(277,902)	(237,566)
Proceeds from exercise of stock options	173,590
Repurchase of common stock		(5,738)
Dividends on common stock	(3,223,011)	(3,144,130)
Settlement and withholdings of equity-based awards	(1,280,749)	(365,022)
Net cash flows from (used in) financing activities	(13,067,390)	(20,614,961)
Net change in cash	7,964	(45,086)
Cash, beginning of period	519,591	661,195
Cash, end of period	527,555	616,109
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	582,394	690,134
Cash paid during the period for income taxes	3,481,196	2,658,865
Supplemental disclosure of non-cash information:
Equipment acquisitions classified in accounts payable	29,047	16,230
Issuance of common stock in connection with the vesting and exercise of equity-based awards	$ 2,280,783	$ 949,812