Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Cash flows from operating activities:    
Net loss $ (2,679) $ (789)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 2
Stock-based compensation 1,335 109
Noncash interest expense 7
Change in fair value of derivative liabilities 5
Warrant modification expense 412
Changes in operating assets and liabilities:    
Trade receivable 27 (189)
Prepaid expenses and other accounts receivable 87
Inventories (46)
Trade payables 37
Other accounts payable (126)
Accrued severance pay, net 4
Net cash used in operating activities (937) (867)
Cash flows from investing activities:    
Purchases of property plant and equipment (2)
Net cash used in investing activities (2)
Cash flows from financing activities:    
Proceeds from issuance of Convertible Promissory Note and warrants 225
Payments of note payable
Net cash provided by financing activities 225
Net decrease in cash, cash equivalents and restricted cash (712) (869)
Cash, cash equivalents and restricted cash at beginning of period 896 4,360
Cash, cash equivalents and restricted cash at end of period 184 3,491
Supplemental non-cash financing and investing activities:    
Cash paid for interest
Cash paid for taxes
Discount on convertible notes $ 225