Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Operating activities:
Net income	$ 6,949	$ 4,051
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	1,009	785
Bad debt expense	106	96
Change in inventory reserve	(156)	87
Net gain on trading securities	(273)	(208)
(Increase) decrease in:
Trade accounts receivable	(5,044)	(2,638)
Inventory	(3,888)	(5,346)
Prepaid expenses and other assets	(655)	(247)
Increase (decrease) in:
Trade accounts payable	4,009	(30)
Accrued expenses and other current liabilities	2,895	(1,027)
Net cash provided by (used in) operating activities	4,952	(4,477)
Investing activities:
Purchase of property, equipment, and leasehold improvements	(1,600)	(8,646)
Purchase of marketable securities, trading	(977)	(848)
Net change in liabilities for short sales of trading securities	226	(718)
Change in restricted cash	(207)	737
Net cash used in investing activities	(2,558)	(9,475)
Financing activities:
(Payments) borrowings on revolving credit facility	(3,853)	6,967
Repayments on long-term debt	(128)	(35)
Preferred stock dividend	(76)	(76)
Bank overdraft	317	671
Borrowings on long-term debt	0	5,400
Net cash (used in) provided by financing activities	(3,740)	12,927
Effect of foreign currency exchange rate changes on cash and cash equivalents	181	17
Net decrease in cash and cash equivalents	(1,165)	(1,008)
Cash and cash equivalents - beginning of period	3,870	4,878
Cash and cash equivalents - end of period	2,705	3,870
Supplemental disclosures of cash flow information:
Cash paid for interest	466	182
Cash paid for income taxes	$ 2,055	$ 2,833