Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 22,325	$ 29,016
Marketable securities	19,177	16,167
Accounts receivable, net of allowances of $212 and $208, respectively	4,711	4,667
Inventories, net	6,372	5,492
Prepaid expenses and other current assets	331	494
Total Current Assets	52,916	55,836
Property, plant and equipment:
Land	536	536
Buildings and improvements	4,877	4,869
Machinery and equipment	19,202	18,815
Gross property, plant and equipment	24,615	24,220
Less: accumulated depreciation	(21,150)	(20,837)
Net property, plant, and equipment	3,465	3,383
Right-of-use lease assets	332	396
Intangible assets, net	214	252
Deferred income tax assets	499	34
Other assets	20	5
Total Assets	57,446	59,906
Current Liabilities:
Accounts payable	1,560	1,455
Accrued compensation and commissions	1,336	1,549
Income taxes payable	6	599
Other accrued expenses	545	823
Total Current Liabilities	3,447	4,426
Deferred income tax liability		124
Other liabilities	632	613
Total Liabilities	4,079	5,163
Contingencies (Note N)
Stockholders’ Equity
Common stock, $0.01 par value - 30,000,000 shares authorized; 5,472,054 shares issued and 5,334,187 shares outstanding at June 30, 2022, and 5,446,840 shares issued and 5,308,973 shares outstanding at December 31, 2021	53	53
Additional paid-in capital	46,070	45,817
Retained earnings	7,824	9,453
Treasury stock, 81,584 shares held in treasury at cost at June 30, 2022 and December 31, 2021	(580)	(580)
Total Stockholders' Equity	53,367	54,743
Total Liabilities and Stockholders' Equity	$ 57,446	$ 59,906