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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
CASH FLOWS PROVIDED BY (USED IN) OPERATING ACTIVITIES:    
Net loss $ (3,259,000) $ (8,776,000)
Adjustments to reconcile net loss to net cash flows provided by (used in) operating activities:    
Depreciation and amortization 1,045,000 992,000
Non-cash, stock based compensation 471,000 765,000
Provision for losses on doubtful accounts 970,000 1,227,000
Provision for losses on inventory obsolescence 53,000 48,000
Preferred stock revaluation 0 6,266,000
Warrant revaluation (1,000,000) 0
Changes in operating assets and liabilities:    
Accounts receivable (2,001,000) (769,000)
Inventories (245,000) 2,000
Prepaid expenses and other current assets (76,000) 215,000
Accounts payable (1,137,000) (196,000)
Accrued liabilities 312,000 276,000
Other long term liabilities (341,000) 24,000
Long term deferred income taxes 11,000 13,000
Net cash flows provided by (used in) operating activities (5,197,000) 87,000
CASH FLOWS USED IN INVESTING ACTIVITIES:    
Purchase of property and equipment (359,000) (216,000)
Purchase of short term investments (8,994,000) 0
Change in other assets (121,000) (139,000)
Net cash flows used in investing activities (9,474,000) (355,000)
CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES:    
Principal payments on capital lease obligations (143,000) (156,000)
Issuance of common stock and warrants, net 17,483,000 7,000
Principal payment on note payable (1,317,000) (495,000)
Net cash flows provided by (used in) financing activities 16,023,000 (644,000)
EFFECT OF FOREIGN CURRENCY EXCHANGE RATE CHANGES ON CASH (1,000) 97,000
NET CHANGE IN CASH AND CASH EQUIVALENTS 1,351,000 (815,000)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 4,946,000 3,454,000
CASH AND CASH EQUIVALENTS AT END OF PERIOD 6,297,000 2,639,000
Cash paid during the period for:    
Interest 732,000 480,000
Income taxes, net 2,000 13,000
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION    
Acquisition of equipment through capital leases 12,000 390,000
Dividends accrued on preferred stock 330,000 300,000
Note Payable converted to Equity $ 3,000,000 $ 0