Consolidated Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net loss	$ (5,912,000)	$ (5,944,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation, Total	121,000	103,000
Amortization of debt discount and issuance costs	568,000	453,000
Amortization of right-of-use asset	6,000	15,000
Interest expense added to loan principal	0	1,792,000
Interest expense added to lease liability	442,000	390,000
Loss on equity method investments	134,000	203,000
Compensation charge for stock and share option awards	433,000	147,000
Unrealized (gain) loss on warrant derivative liabilities	0	(573,000)
Changes in operating assets and liabilities:
Accounts receivable	146,000	37,000
Prepaid expenses and other current assets	(102,000)	(127,000)
Other assets	(271,000)	(272,000)
Accounts payable	664,000	(188,000)
Lease liabilities	(246,000)	(255,000)
Other accrued liabilities	795,000	1,396,000
Net cash used in operating activities	(3,222,000)	(2,823,000)
Cash flows from investing activities:
Additions to property, plant and equipment and water programs	(530,000)	(513,000)
Contributions to equity-method investments	(100,000)	(137,000)
Net cash used in investing activities	(630,000)	(650,000)
Cash flows from financing activities:
Net proceeds from issuance of stock	11,741,000	14,867,000
Dividend payments	(1,288,000)	0
Principal payments on long-term debt	(35,000)	(13,000)
Net cash provided by financing activities	10,418,000	14,854,000
Net increase in cash, cash equivalents and restricted cash	6,566,000	11,381,000
Cash, cash equivalents and restricted cash, beginning of period	19,856,000	7,424,000
Cash, cash equivalents and restricted cash, end of period	$ 26,422,000	$ 18,805,000