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Interim Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Operating activities:    
Net loss $ (5,377) $ (5,134) [1]
Adjustments to reconcile net loss to net cash flows from operating activities:    
Depreciation and amortization 44 49
Share-based compensation expense 906 1,139
Shares issued to a vendor 74
Amortization of discount (premium) on marketable debt securities (7)
Changes in assets and liabilities:    
Accounts receivable 364 (32)
Other payables and accrued liabilities (461) 29
Net cash flows from operating activities (4,531) (3,875)
Investing activities:    
Purchase of property and equipment (239)
Purchase of marketable debt securities (2,496)
Net cash flows from investing activities (2,496) (239)
Financing activities:    
Issuance of common stock and warrants, net of issuance costs 9,562
Net cash flows from financing activities 9,562
Increse (decrease) in cash, cash equivalents and restricted cash 2,535 (4,114)
Cash, cash equivalents and restricted cash at beginning of period 5,263 10,814
Cash, cash equivalents and restricted cash at ending of period 7,798 6,700
Non-cash investing and financing activities:    
Recognition of right-of-use asset and lease liability upon adoption of ASU 2016-02 630
Supplemental disclosure of cash flow information:    
Cash received from interest $ 61
[1] Reclassified