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CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Cash flows from operating activities:    
Net loss $ (5,339,000) $ (21,958,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 291,000 213,000
Amortization of deferred financing costs and debt discount 232,000 257,000
Joint venture acquisition obligation accretion 17,000 203,000
Change in fair value of warrants 0 15,444,000
Stock-based compensation expense 317,000 459,000
Loss on asset disposal 2,000 0
Increases (decreases) in cash caused by changes in operating assets and liabilities:    
Accounts receivable 155,000 546,000
Inventories (206,000) 100,000
Other current assets (408,000) (470,000)
Other assets (211,000) 68,000
Accounts payable and accrued expenses 176,000 138,000
Deferred revenues (4,000) 21,000
Long-term deferred rent (80,000) (51,000)
Net cash used in operating activities (5,058,000) (5,030,000)
Cash flows from investing activities:    
Purchases of property and equipment (69,000) (187,000)
Net cash used in investing activities (69,000) (187,000)
Cash flows from financing activities:    
Joint venture purchase payments (500,000) (123,000)
Proceeds from sale of common stock, net 562,000 3,974,000
Dividends paid on preferred stock 0 (72,000)
Net cash provided by financing activities 62,000 3,779,000
Effect of exchange rate changes on cash and cash equivalents 85,000 15,000
Net decrease in cash and cash equivalents (4,980,000) (1,423,000)
Cash and cash equivalents at beginning of period 14,338,000 14,622,000
Cash and cash equivalents at end of period 9,358,000 13,199,000
Cash paid during period for:    
Interest 400,000 612,000
Supplemental schedule of non-cash investing and financing activities:    
Conversion of preferred stock into common stock 0 10,000
Declared dividend related to preferred stock $ 0 $ 3,000