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Condensed Consolidated Statements of Cash Flows
$ in Thousands
 3 Months Ended
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
Operating activities:    
Net loss $ (8,994) $ (5,609)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 1,039 934
Amortization of inventory fair market value adjustment 164 32
Loss on conversion of JGB debt to shares of common stock 2,806 0
Amortization of debt discount and noncash interest expense 2,084 627
Revaluation of common stock warrant liability and derivative liability to estimated fair value (1,321) (4,128)
Stock-based compensation 706 391
Revaluation of contingent consideration to estimated fair value 144 (221)
Non-cash goodwill impairment 0 1,958
Changes in operating assets and liabilities:    
Accounts receivable (606) (576)
Inventory 196 470
Prepaid and other assets (510) (245)
Accounts payable 835 382
Accrued payroll liabilities (1,358) (865)
Accrued and other liabilities 654 382
Change in deferred revenue (10) (2)
Change in deferred taxes (347) (271)
Net cash used in operating activities (4,518) (6,741)
Investing activities:    
Purchase of property and equipment (62) (68)
Net cash used in investing activities (754) (68)
Financing activities:    
Proceeds from debt, net of issuance costs 0 24,002
Perceptive term loan issuance costs (584) 0
Proceeds from issuance of common stock under employee stock purchase plan 32 44
Principal payments on debt and capital lease obligations (1,633) (12,915)
Change in short term credit facility (225) 0
Proceeds from exercise of warrants 25 0
Proceeds from exercise of stock options 80 0
Net cash (used in) provided by financing activities (2,318) 11,131
Effect of exchange rate changes on cash and cash equivalents 17 17
Net increase (decrease) in cash, cash equivalents and restricted cash (7,573) 4,339
Cash, cash equivalents, and restricted cash at beginning of period 26,474 17,401
Cash, cash equivalents, and restricted cash at end of period 18,901 21,740
Supplemental disclosure of cash flow information:    
Deferred purchase consideration 0 1,018
Allenex [Member]    
Investing activities:    
Acquisition of Allenex AB (692) 0
Conexio [Member]    
Financing activities:    
Acquisition of business, net of cash acquired $ (13) $ 0