Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Cash Flows

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Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Cash flow from operating activities    
Net loss $ (4,713) $ (3,534)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation expense 433 510
Amortization of intangible assets 125 125
Amortization of lease incentive for tenant improvements 2 5
Non cash interest expense 209 91
Stock based compensation 1,404 46
Change in fair value of warrant liability 114 319
Loss on disposal of equipment 22  
Write-down of excess and obsolete inventory 415 530
Bad debt expense (17) 183
Changes in operating assets and liabilities:    
Trade accounts receivable 268 1,455
Prepaid expenses and other current assets 2,610 (168)
Inventories (1,958) (20)
Accounts payable and accrued liabilities (915) (657)
Net cash used in operating activities (2,001) (1,115)
Cash flows from investing activities    
Purchase of property and equipment (548) (310)
(Increase) decrease in restricted cash (42) 63
Proceeds from maturities of marketable securities   463
Net cash provided by (used in) investing activities (590) 216
Cash flows from financing activities    
Proceeds from issuance of common stock, net of issuance costs 15,369  
Proceeds from issuance of stock in connection with exercise of warrants   2,879
Proceeds from line of credit   3,124
Payments on line of credit   (5,696)
Payments on long-term debt (1,800)  
Net cash provided by financing activities 13,569 307
Net decrease in cash and cash equivalents 10,978 (592)
Cash and cash equivalents at beginning of period 2,279 2,741
Cash and cash equivalents at end of period 13,257 2,149
Supplemental cash flow information    
Reclassification of warrant liability 5  
Cash paid for interest 238 198
Preferred Stock
    
Supplemental cash flow information    
Preferred stock converted into common stock $ 161,456