Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash Flows From Operating Activities
Net loss	$ (6,161,688)	$ (2,008,710)
Adjustments to reconcile net loss to net cash and cash equivalents provided by (used in) operating activities:
Bad debts (recovery)	24,000	(7,253)
Depreciation and amortization	300,151	281,162
Provision for product warranties	139,909	116,402
Stock based compensation	286,773	312,680
Decrease (increase) in:
Accounts receivable	12,900,922	936,353
Inventories	(2,465,876)	(523,902)
Prepaid and other current assets	(11,756)	109,114
Increase (decrease) in:
Accounts payable and accrued expenses	(2,076,671)	(731,195)
Deferred revenue	(161,413)	677,396
Product warranties	(207,671)	(103,643)
Total Adjustments	8,728,368	1,067,114
Net Cash Provided By (Used In) Operating Activities	2,566,680	(941,596)
Cash Flows from Investing Activities
Acquisition of property and equipment	(148,552)	(229,426)
Investment in debt securities - held to maturity		(3,699,718)
Investments matured	6,930,112	1,200,000
Net Cash Provided By (Used In) Investing Activities	6,781,560	(2,729,144)
Cash Flows from Financing Activities
Loan proceeds	1,022,785
Withholding taxes on stock compensation	(57,331)	(118,754)
Exercise of warrants	560	2,739,238
Net Cash Provided By Financing Activities	966,014	2,620,484
Net Increase (Decrease) in Cash and Cash Equivalents	10,314,254	(1,050,256)
Cash and Cash Equivalents - Beginning	8,100,288	12,484,256
Cash and Cash Equivalents - Ending	18,414,542	11,434,000
Supplemental Disclosure of Cash Flow Information
Interest paid	12,456
Non-Cash Investing and Financing Activities
Transfer of inventory to property and equipment		51,234
Lease liabilities arising from obtaining right-of-use-assets		$ 1,714,814