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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Cash flows from operating activities:    
Net cash provided by (used in) operating activities $ (3,701) $ 22
Cash flows from investing activities:    
Proceeds from sale of asset 4,699 750
Acquisitions of property, plant and equipment (61) (5)
Net cash from investing activities 4,638 745
Cash flows from financing activities:    
Proceeds from issuance of common stock, net of issuance costs 809 1,611
Net cash from financing activities 809 1,611
Net increase in cash and cash equivalents 1,746 2,378
Cash and cash equivalents, beginning of period 3,250 2,588
Cash and cash equivalents, end of period $ 4,996 $ 4,966