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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Feb. 28, 2018
Feb. 28, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net loss $ (1,524) $ (1,845)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 520 587
Stock-based compensation expense 48 164
Provisions for inventory write-downs 413 530
Equity in loss from unconsolidated entities   11
Gain on disposals of long-lived assets, net (209) (80)
Changes in :    
Accounts receivable, net 811 (139)
Inventories 103 (128)
Prepaid expenses and other 61 115
Accounts payable (191) (249)
Accrued expenses and other current liabilities 130 (725)
Net cash provided by (used in) operating activities 162 (1,759)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property, plant and equipment (131) (88)
Proceeds from sales of property, plant and equipment 327  
Payments for development of intangible assets (1) (9)
Proceeds from patents assignment 1  
Proceeds from sale of investment   59
Net cash provided by (used in) investing activities 196 (38)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Repayments of long-term debt (173) (158)
Net cash used in financing activities (173) (158)
Effect of exchange rate changes on cash and cash equivalents 90 (7)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 275 (1,962)
CASH AND CASH EQUIVALENTS—Beginning of period 3,582 6,030
CASH AND CASH EQUIVALENTS—End of period 3,857 4,068
NONCASH INVESTING AND FINANCING ACTIVITIES:    
Accrual related to property, plant and equipment $ 114 $ 228