Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Feb. 28, 2019	Feb. 28, 2018
Operating activities:
Net income	$ 3,886	$ 2,514
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	503	498
Bad debt expense	18	44
Change in inventory reserve	107	123
Net (gain) on trading securities	(102)	(251)
(Increase) decrease in:
Trade accounts receivable	(1,889)	(3,188)
Inventory	(5,033)	(1,760)
Prepaid expenses and other assets	(524)	(1,030)
Increase (decrease) in:
Trade accounts payable	2,206	2,515
Accrued expenses and other current liabilities	(3,853)	(1,161)
Net cash used in operating activities	(4,681)	(1,696)
Investing activities:
Purchase of property, equipment and leasehold improvements	(330)	(1,214)
Sale (purchase) of marketable securities, trading	1,071	(338)
Net change in securities sold short	(115)	(90)
Net cash provided by (used in) investing activities	626	(1,642)
Financing activities:
Borrowings on revolving credit facility	4,593	1,525
Preferred dividend	(38)	(38)
Bank overdraft	457	1,145
Payments on long-term debt	(72)	(35)
Net cash provided by financing activities	4,940	2,597
Effect of foreign currency exchange rate changes on cash and cash equivalents	277	67
Net increase (decrease) in cash, cash equivalents, and restricted cash	1,162	(674)
Cash, cash equivalents, and restricted cash - beginning of period	3,638	4,577
Cash, cash equivalents, and restricted cash - end of period	4,800	3,903
Supplemental disclosures of cash flow information:
Cash paid for interest	201	243
Cash paid for income taxes	$ 3,059	$ 2,241