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CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Cash flows from operating activities:    
Net loss $ (12,297) $ (8,068)
Adjustments to reconcile net loss to net cash used in operating activities:    
Non Cash Lease Expense 39 0
Depreciation and amortization 617 975
Amortization of deferred financing costs and debt discount 257 212
Provision for excess inventory 0 398
Change in fair value of warrants (492) 0
Share-based compensation expense 77 239
Loss on asset disposal 0 20
Loss on sale of business 6,306 0
Increases (decreases) in cash caused by changes in operating assets and liabilities:    
Accounts receivable (28) (274)
Inventories 235 371
Other current assets 216 344
Other assets 257 (1)
Accounts payable and accrued expenses (94) (1,165)
Deferred revenues 29 123
Other long-term liabilities 54 (14)
Net cash used in operating activities (4,824) (6,840)
Cash flows from investing activities:    
Purchases of property and equipment /long-lived assets (6) (78)
Proceeds from sale of business, net 2,789 0
Net cash used in investing activities 2,783 (78)
Cash flows from financing activities:    
Principal payment of long-term obligations (642) 0
Payment of financing lease liability (28) 0
Proceeds from sale of common stock, net 1,984 (200)
Net cash provided by (used in) financing activities 1,314 (200)
Effect of exchange rate changes on cash and cash equivalents (4) 12
Net decrease in cash and cash equivalents (731) (7,106)
Cash, cash equivalents, and restricted cash at beginning of period 5,301 10,225
Cash, cash equivalents, and restricted cash at end of period 4,570 3,119
Cash paid during period for:    
Interest 826 649
Supplemental schedule of non-cash investing and financing activities:    
Proceeds from sales of business, net, paid directly to lender for principal payment of long-term obligations 3,050 0
Conversion of preferred stock into common stock $ 0 $ 4