Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Feb. 28, 2023	Feb. 28, 2022
Operating activities:
Net income	$ 9,811	$ 10,193
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	708	751
Bad debt expense	182	26
Net unrealized (gain) loss on trading securities	(621)	78
Increase (decrease) in cash from changes in:
Trade accounts receivable	2,901	(2,958)
Inventory	(4,658)	(4,276)
Prepaid expenses and other assets	1,356	(1,374)
Operating lease right-of-use assets	(271)	54
Trade accounts payable	1,087	4,404
Accrued expenses and other current liabilities	(4,842)	(2,524)
Operating lease liabilities	285	(19)
Net cash provided by operating activities	5,938	4,355
Investing activities:
Purchase of property, equipment, and leasehold improvements	(391)	(644)
Net purchases of marketable securities, trading	(17,319)	(935)
Net cash (used in) investing activities	(17,710)	(1,579)
Financing activities:
Repayments on long-term debt	(58)	(55)
Preferred stock dividend	(38)	(38)
Net change in bank overdraft	(109)	(1,061)
Net cash (used in) financing activities	(205)	(1,154)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(85)	(455)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(12,062)	1,167
Cash, cash equivalents, and restricted cash - beginning of period	17,396	4,465
Cash, cash equivalents, and restricted cash - end of period	5,334	5,632
Supplemental disclosures of cash flow information:
Cash paid for interest	102	105
Cash paid for income taxes	$ 7,544	$ 3,979