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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
3 Months Ended
Aug. 31, 2015
Aug. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net loss $ (834) $ (3,773)
Adjustments to reconcile net loss to net cash from operating activities:    
Depreciation 257 394
Amortization of debt financing costs 19  
Change in assets and liabilities:    
Accounts receivable 3,137 3,857
Inventories (1,429) (1,622)
Workers' compensation security deposit 717  
Other current assets (1,093) (355)
Accounts payable, trade 624 (1,283)
Accrued liabilities 464 (171)
Other, net (107) (66)
Net cash from operating activities 1,755 (3,019)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Proceeds from note receivable   13
Purchase of property, plant and equipment (70) (26)
Other, net (8) (4)
Net cash from investing activities (78) (17)
Net increase (decrease) in cash 1,677 (3,036)
Cash at beginning of period 4,995 6,031
Cash at end of period $ 6,672 $ 2,995