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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
 6 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Cash flows from operating activities:    
Net income (loss) $ (365,000) $ 154,000
Adjustments to reconcile net income (loss) to net cash used in operating activities:    
Depreciation and amortization 298,000 339,000
Allowance for doubtful accounts (3,000) 6,000
Share-based compensation 65,000 33,000
Changes in:    
Accounts receivable and other current receivables 440,000 834,000
Inventories (724,000) (1,030,000)
Prepaid expenses (65,000) (88,000)
Other assets   8,000
Accounts payable and accrued expenses (476,000) (213,000)
Income taxes receivable and payable 39,000 (49,000)
Net cash used in operating activities (791,000) (6,000)
Cash flows from investing activities:    
Purchases of equipment (48,000) (237,000)
Net cash used in investing activities (48,000) (237,000)
Cash flows from financing activities:    
Proceeds from exercise of stock options 50,000  
Principal payments on term loan (774,000) (179,000)
Net cash used in financing activities (724,000) (179,000)
Net decrease in cash (1,563,000) (422,000)
Cash, beginning of period 4,112,000 4,689,000
Cash, end of period 2,549,000 4,267,000
Supplemental Information    
Cash payments for interest 9,000 10,000
Cash payments for income taxes $ 5,000 $ 53,000