Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Feb. 28, 2022	Feb. 28, 2021
Operating activities:
Net income	$ 10,193	$ 2,245
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	751	751
Bad debt expense	26	55
Net unrealized loss on trading securities	78	1,059
Increase (decrease) in cash from changes in:
Trade accounts receivable	(2,958)	866
Inventory	(4,276)	(635)
Prepaid expenses and other assets	(1,374)	1,298
Operating lease right-of-use assets	54	847
Trade accounts payable	4,404	561
Accrued expenses and other current liabilities	(2,524)	(2,579)
Operating lease liabilities	(19)	(928)
Net cash provided by operating activities	4,355	3,540
Investing activities:
Purchase of property, equipment, and leasehold improvements	(644)	(290)
Net purchases of marketable securities, trading	(935)	(3,846)
Net change in liabilities for short sales of trading securities		(1,622)
Net cash (used in) investing activities	(1,579)	(5,758)
Financing activities:
(Repayment) borrowings on revolving credit facility, net		(5,100)
Repayments on long-term debt	(55)	(53)
Preferred stock dividend	(38)	(38)
Net change in bank overdraft	(1,061)	2,526
Net cash (used in) financing activities	(1,154)	(2,665)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(455)	9
Net increase (decrease) in cash, cash equivalents, and restricted cash	1,167	(4,874)
Cash, cash equivalents, and restricted cash - beginning of period	4,465	8,995
Cash, cash equivalents, and restricted cash - end of period	5,632	4,121
Supplemental disclosures of cash flow information:
Cash paid for interest	105	121
Cash paid for income taxes	$ 3,979	$ 2,509