Note 2 - Going Concern

3 Months Ended

Mar. 31, 2021

Notes to Financial Statements

Substantial Doubt about Going Concern [Text Block]

2. GOING CONCERN

At

March 31, 2021,

the Company had cash and cash equivalents of

$10,014,000

and working capital of

$6,413,000.

The Company has incurred recurring operating losses and as of

March 31, 2021

had an accumulated deficit of

$255,696,000.

These recurring losses raise substantial doubt about the Company's ability to continue as a going concern within

one

year from the filing of this report. The Company

may

need to raise additional capital to grow its business, fund operating expenses and make interest payments. The Company's ability to fund its cash needs is subject to various risks, many of which are beyond its control. The Company

may

seek additional funding through debt borrowings, sales of debt or equity securities or strategic partnerships. The Company cannot guarantee that such funding will be available on a timely basis, in needed quantities or on terms favorable to the Company, if at all.

The accompanying condensed consolidated financial statements have been prepared assuming that the Company will continue as a going concern; however, the above conditions raise substantial doubt about the Company's ability to do so. The condensed consolidated financial statements do

not

include any adjustments to reflect the possible future effects on the recoverability and classification of assets or the amounts and classifications of liabilities that

may

result should the Company be unable to continue as a going concern.