UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net loss	$ (3,500)	$ (2,652)
Adjustments to reconcile net loss for the period to net cash used in operations:
Depreciation and amortization	12	12
Stock-based compensation	390	51
Loss on other investments	1,129	624
Change in working capital account items:
Other current assets	146	70
Accounts payable, accrued liabilities and other	80	137
Net cash used in operating activities	(1,743)	(1,758)
Cash flows from investing activities:
Proceeds from sales of marketable securities	300
Disposition of short-term investments, net of acquisitions	2,299	985
Additions to plant and equipment		(40)
Proceeds from option/sale agreements, net		100
Net cash provided by investing activities	2,599	1,045
Cash flows from financing activities:
Payment of taxes from withheld shares		(46)
Proceeds from exercise of stock options		66
Net cash provided by financing activities		20
Net increase (decrease) in cash and cash equivalents	856	(693)
Cash and cash equivalents, beginning of period	1,408	1,071
Cash and cash equivalents, end of period	$ 2,264	$ 378