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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
CASH FLOWS PROVIDED BY (USED IN) OPERATING ACTIVITIES:    
Net loss $ (6,014) $ (10,045)
Adjustments to reconcile net loss to net cash flows provided by (used in) operating activities:    
Depreciation and amortization 1,570 1,506
Non-cash, stock based compensation 556 734
Provision for losses on doubtful accounts 1,649 1,432
Provision for losses on inventory obsolescence 88 47
Preferred stock revaluation 0 6,866
Warrant revaluation (1,000) 0
Changes in operating assets and liabilities:    
Accounts receivable (2,153) (1,418)
Inventories (616) (44)
Prepaid expenses and other current assets (377) (269)
Accounts payable (1,113) 137
Accrued expenses (403) (131)
Other long term liabilities 3 268
Long term deferred income taxes 33 18
Net cash flows used in operating activities (7,777) (899)
CASH FLOWS USED IN INVESTING ACTIVITIES:    
Purchase of property and equipment (641) (147)
Purchase of short term investments (8,994) 0
Proceeds from the sale of short term investments 4,996 0
Acquisition of intangible assets (3,394) 0
Change in other assets (345) (256)
Net cash flows used in investing activities (8,378) (403)
CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES:    
Principal payments on capital lease obligations (244) (165)
Issuance of common stock and warrants, net 17,483 23
Principal payment on note payable (1,317) (659)
Net cash flows provided by (used in) financing activities 15,922 (801)
EFFECT OF FOREIGN CURRENCY EXCHANGE RATE CHANGES ON CASH 34 72
NET CHANGE IN CASH AND CASH EQUIVALENTS (199) (2,031)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 4,946 3,454
CASH AND CASH EQUIVALENTS AT END OF PERIOD 4,747 1,423
Cash paid during the period for:    
Interest 753 495
Income taxes, net 2 106
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION    
Acquisition of equipment through capital leases 175 388
Dividends accrued on preferred stock 495 450
Note Payable converted to Equity 3,000 0
Acquisition of intangible assets $ 1,007 $ 0