Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net loss	$ 3,771,000	$ (2,386,000)
Adjustments to reconcile net income (loss) to net cash used by operating activities:
Depreciation and amortization	824,000	844,000
Stock based compensation	216,000	331,000
Unrealized gain on marketable securities	(8,365,000)
Decrease (increase) in assets:
Accounts receivable	1,149,000	204,000
Inventory	(1,147,000)	(268,000)
Prepaid expenses and other current assets	(671,000)	(156,000)
Other assets	434,000
Increase (decrease) in liabilities:
Accounts payable	(117,000)	266,000
Accrued expenses	252,000	363,000
Other liabilities	859,000	(1,453,000)
Net cash used by operating activities	(2,795,000)	(2,981,000)
Cash flows from investing activities:
Purchase of property, plant and equipment	(103,000)	(602,000)
Purchase of marketable securities	(6,581,000)
Purchase of investment	(100,000)
Note receivable investment	(574,000)
Purchase of intangible assets	111,000	(358,000)
Net cash used by investing activities	(7,247,000)	(960,000)
Cash flows from financing activities:
Payments of long-term debt	(144,000)	(120,000)
Borrowings of long-term debt	1,272,000	588,000
Payments of revolving lines of credit, net	(500,000)
Borrowings from convertible of note		500,000
Issuances of common stock, net of issuance costs	20,149,000	5,042,000
Net cash provided by financing activities	20,777,000	6,010,000
Cash flows from discontinued operations:
Cash used by operations - discontinued operations	(489,000)	(305,000)
Cash provied (used) by investing activities	880,000	(221,000)
Cash used by financing activities	(577,000)	(74,000)
Net cash used by discontinued operations	(186,000)	(600,000)
Net increase in cash	10,549,000	1,469,000
Cash at beginning of period	1,096,000	2,448,000
Cash at end of period	$ 11,645,000	$ 3,917,000