Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Feb. 29, 2020	Feb. 28, 2019
Operating activities:
Net income	$ 4,515,000	$ 3,886,000
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	506,000	503,000
Bad debt expense	14,000	18,000
Change in inventory provision	68,000	107,000
Loss on sale of real property	102,000
Net gain on trading securities	(391,000)	(102,000)
(Increase) decrease in:
Trade accounts receivable	931,000	(1,889,000)
Inventory	(2,852,000)	(5,033,000)
Prepaid expenses and other assets	(1,026,000)	(524,000)
Increase (decrease) in:
Trade accounts payable	(2,243,000)	2,206,000
Accrued expenses and other current liabilities	(3,245,000)	(3,853,000)
Net cash used in operating activities	(3,621,000)	(4,681,000)
Investing activities:
Purchase of property, equipment, and leasehold improvements	(4,591,000)	(330,000)
Proceeds from sale of real property	7,075,000
Net sales of marketable securities, trading	1,370,000	1,071,000
Net change in liabilities for short sales of trading securities	1,731,000	(115,000)
Net cash provided by investing activities	5,585,000	626,000
Financing activities:
Borrowings on revolving credit facility, net	3,192,000	4,593,000
Borrowings on construction loan	3,342,000
Repayments on long-term debt	(5,125,000)	(72,000)
Preferred stock dividend	(38,000)	(38,000)
Bank overdraft	(147,000)	457,000
Net cash provided by financing activities	1,224,000	4,940,000
Effect of foreign currency exchange rate changes on cash and cash equivalents	(249,000)	277,000
Net increase in cash, cash equivalents, and restricted cash	2,939,000	1,162,000
Cash, cash equivalents, and restricted cash - beginning of period	5,347,000	3,638,000
Cash, cash equivalents, and restricted cash - end of period	8,286,000	4,800,000
Supplemental disclosures of cash flow information:
Cash paid for interest	178,000	201,000
Cash paid for income taxes	$ 3,395,000	$ 3,059,000