Condensed Consolidated Unaudited Statements of Cash Flows - USD ($)	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,245,321	$ 1,480,091
Adjustments to reconcile net income from operations to net cash flows from operating activities:
Depreciation	592,383	498,505
Amortization	15,625	32,500
Gain on sale of property and equipment		(300)
Equity-based compensation	316,056	334,256
Deferred income taxes	276,942	(482,112)
Provision (recovery) for losses on doubtful accounts	11,000	(3,000)
Inventory allowance	117,531	30,660
Other	989	989
Changes in assets and liabilities:
Accounts receivable	689,059	182,299
Inventories	22,199,828	23,179,388
Prepaid and other current assets	(4,321,455)	(3,763,827)
Other assets	50,265	(13,155)
Accounts payable	(4,261,996)	(2,523,433)
Accrued expenses and accrued wages, salaries and bonuses	(2,515,963)	(2,011,951)
Income taxes receivable	225,058	113,026
Net cash flows from operating activities	14,640,643	17,053,936
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(956,976)	(291,318)
Proceeds from sales of property and equipment		300
Net cash flows (used in) investing activities	(956,976)	(291,018)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under revolving credit facility	336,212,413	305,522,554
Repayments under revolving credit facility	(348,325,547)	(321,921,515)
Principal payments on long-term debt	(235,188)	(92,411)
Repurchase of common stock	(918,085)	(15,175)
Dividends on common stock	(116,196)	(129,026)
Withholdings on the exercise of equity-based awards		(79,850)
Net cash flows (used in) financing activities	(13,382,603)	(16,715,423)
Net change in cash	301,064	47,495
Cash, beginning of period	520,644	523,065
Cash, end of period	821,708	570,560
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	306,243	199,423
Supplemental disclosure of non-cash information:
Equipment acquisitions classified in accounts payable	200,782	15,465
Dividends declared, not paid	180,740	200,843
Issuance of common stock in connection with the vesting and exercise of equity-based awards	$ 1,005,792	$ 1,183,091