Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	May 31, 2021	Nov. 30, 2020	May 31, 2020	Nov. 30, 2019	May 31, 2021	May 31, 2020	Aug. 31, 2020	Aug. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (57)	$ (707)	$ (509)	$ (322)	$ (1,018)	$ (481)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization					674	623
Stock-based compensation expense					135	80
Provisions for inventory write-downs	159		251		555	571
Gain on disposals of long-lived assets, net	(2)				(286)	(79)
Gain on disposals of investments						(634)
Changes in :
Accounts receivable, net					576	(131)
Inventories					(1,536)	(1,084)
Prepaid expenses and other					80	95
Accounts payable					(35)	60
Accrued expenses and other current liabilities					29	194
Net cash used in operating activities					(826)	(786)	$ (1,000)	$ (3,500)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment					(111)	(226)
Proceeds from sales of property, plant and equipment					291	79
Payments for development of intangible assets					(12)	(14)
Net cash provided by (used in) investing activities					168	(161)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from long-term debt						2,000
Repayments of long-term debt					(43)	(279)
Issuance of common stock for private placement						700
Acquisition of noncontrolling interests					(12)	(2)
Net cash (used in) provided by financing activities					(55)	2,419
Changes in cash balance included in deconsolidated subsidiaries						(61)
Effect of exchange rate changes on cash and cash equivalents and restricted cash					(438)	(228)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH					(1,151)	1,183
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH—Beginning of period		$ 3,012		$ 1,471	3,012	1,471	1,471
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH—End of period	$ 1,861		$ 2,654		1,861	2,654	$ 3,012	$ 1,471
NONCASH INVESTING AND FINANCING ACTIVITIES:
Accrual related to property, plant and equipment					$ 3	$ 34