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CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Cash flows from operating activities:    
Net loss $ (10,877,000) $ (17,208,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 660,000 453,000
Amortization of deferred financing costs and debt discount 330,000 470,000
Joint Venture acquisition obligation accretion 51,000 0
Provision for doubtful accounts 188,000 19,000
Change in fair value of warrants (418,000) 381,000
Change in fair value of option liabilities (2,250,000) 190,000
Share-based compensation expense 1,838,000 1,977,000
Equity loss from investment in joint venture 48,000 86,000
Loss on asset disposal 257,000 0
Gain on previously held equity interest in Joint Venture (4,892,000) 0
Loss on debt extinguishment 708,000 0
Increases (decreases) in cash caused by changes in operating assets and liabilities:    
Accounts receivable 862,000 258,000
Inventories (816,000) 210,000
Other current assets (27,000) (278,000)
Other assets (587,000) 17,000
Accounts payable and accrued expenses (279,000) (268,000)
Deferred revenues, related party (638,000) (2,413,000)
Deferred revenues (1,200,000) 52,000
Long-term deferred rent 28,000 96,000
Net cash used in operating activities (17,014,000) (15,958,000)
Cash flows from investing activities:    
Purchases of property and equipment (432,000) (886,000)
License agreement termination fee (400,000) 0
Cash acquired in purchase of the Joint Venture 5,000 0
Net cash used in investing activities (827,000) (886,000)
Cash flows from financing activities:    
Principal payments on long-term obligations (22,292,000) (140,000)
Proceeds from long-term obligations 27,000,000 0
Debt issuance costs and loan fees (1,744,000) 0
Payments toward purchase of Joint Venture (70,000) 0
Proceeds from exercise of employee stock options and warrants and stock purchase plan 115,000 951,000
Proceeds from sale of common stock 3,001,000 4,946,000
Costs from sale of common stock (184,000) (64,000)
Net cash provided by financing activities 5,826,000 5,693,000
Effect of exchange rate changes on cash and cash equivalents (81,000) 0
Net decrease in cash and cash equivalents (12,096,000) (11,151,000)
Cash and cash equivalents at beginning of period 25,717,000 36,922,000
Cash and cash equivalents at end of period 13,621,000 25,771,000
Cash paid during period for:    
Interest 1,151,000 1,257,000
Supplemental schedule of non-cash investing and financing activities:    
Fair value of warrants allocated to additional paid-in capital 949,000 0
Fair value of intangible assets acquired 9,394,000 0
Fair value of tangible assets acquired 260,000 0
Joint venture purchase obligation 4,709,000 0
Fair value of previously held equity interest at acquisition date $ 4,929,000 $ 0