CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net loss	$ (885,000)	$ (717,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Changes in operating assets and liabilities	1,050,000	6,886,000
Net cash provided by operating activities	165,000	6,169,000
Cash flows from financing activities:
Payment of deferred stock offering expenses	(300,000)	0
Common stock dividend payments	0	(2,653,000)
Net cash used in financing activities	(300,000)	(2,653,000)
Net increase (decrease) in cash	(135,000)	3,516,000
Cash beginning of period	5,446,000	6,500,000
Cash end of period	5,311,000	10,016,000
Supplemental non-cash financing disclosure:
Deferred stock offering expenses	157,000	0
Dividend declared in August 2019; paid in October 2019	$ 0	$ (5,306,000)