Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2019	Nov. 30, 2018
Operating activities:
Net income	$ 1,917	$ 1,925
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	259	247
Bad debt expense	3	10
Inventory write-downs	294	198
Loss on sale of real property	102
Net loss (gain) on trading securities	80	(228)
(Increase) decrease in:
Trade accounts receivable	2,175	(144)
Inventory	(2,766)	(2,727)
Prepaid expenses and other assets	(729)	(911)
Increase (decrease) in:
Trade accounts payable	(2,266)	2,743
Accrued expenses and other current liabilities	(737)	(1,669)
Net cash used in operating activities	(1,668)	(556)
Investing activities:
Purchase of property, equipment, and leasehold improvements	(2,393)	(188)
Proceeds from sale of real property	7,075
Net sales of marketable securities, trading	1,388	550
Net change in liabilities for short sales of trading securities	2,167	(771)
Net cash provided by (used in) investing activities	8,237	(409)
Financing activities:
Borrowings on revolving credit facility, net	513	1,099
Borrowings on construction loan	1,701
Repayments on long-term debt	(5,125)	(36)
Preferred stock dividend	(19)	(19)
Bank overdraft	104	(385)
Net cash (used in) provided by financing activities	(2,826)	659
Effect of foreign currency exchange rate changes on cash and cash equivalents	(212)	158
Net increase (decrease) in cash, cash equivalents, and restricted cash	3,531	(148)
Cash, cash equivalents, and restricted cash - beginning of period	5,347	3,638
Cash, cash equivalents, and restricted cash - end of period	8,878	3,490
Supplemental disclosures of cash flow information:
Cash paid for interest	$ 122	$ 77