CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current Assets:
Cash And Cash Equivalents	$ 10,580	$ 6,826
Trade Accounts Receivable, Net	8,229	6,466
Inventories, Net	16,978	10,545
Prepaid Expenses And Other Current Assets	1,634	1,878
Total Current Assets	37,421	25,715
Property, Plant And Equipment, Net	4,556	3,566
Right-of-use (rou) Asset	2,399	2,887
Investment In Securities	1,795	2,014
Deferred Tax Assets, Net	4,116	4,300
Other Assets	98	112
Total Assets	50,385	38,594
Current Liabilities:
Accounts Payable	5,883	5,119
Accrued Compensation And Related Taxes	1,099	1,635
Accrued Warranty Expense	533	791
Accrued Other Expenses And Other Current Liabilities	938	307
Dividends Payable	505	250
Short-term Lease Liability	447	525
Credit Facility	1,470	0
Notes Payable-current Portion	267	82
Deferred Revenue	1,045	757
Total Current Liabilities	12,187	9,466
Notes Payable, Net Of Current Portion	605	247
Long-term Lease Liability	2,269	2,702
Deferred Revenue	2,706	2,551
Total Liabilities	17,767	14,966
Stockholders' Equity:
Common Stock; $.60 Par Value; 50,000,000 Authorized Shares; 18,298,999 And 13,962,366 Issued And 16,848,599 And 12,511,966 Outstanding Shares At December 31, 2021, And 2020, Respectively	10,979	8,377
Additional Paid-in Capital	35,862	26,346
Accumulated Deficit	(8,821)	(5,693)
Treasury Stock, At Cost, 1,450,400 Shares At December 31, 2021 And 2020	(5,402)	(5,402)
Total Stockholders' Equity	32,618	23,628
Total Liabilities And Stockholders' Equity	$ 50,385	$ 38,594