Consolidated Balance Sheets - USD ($)	Dec. 31, 2022	Dec. 31, 2021
CURRENT ASSETS:
Cash and cash equivalents	$ 70,711,000	$ 109,805,000
Marketable securities	24,863,000	34,190,000
Accounts receivable	71,362,000	53,715,000
Less allowance for doubtful accounts	338,000	338,000
Accounts receivable, net	71,024,000	53,377,000
Inventories:
Finished goods	36,249,000	40,624,000
Work in process	105,564,000	92,437,000
Raw materials and supplies	10,324,000	10,800,000
Inventory, net	152,137,000	143,861,000
Notes receivable, current	2,226,000	2,330,000
Other current assets	5,671,000	4,490,000
Total current assets	326,632,000	348,053,000
PROPERTY, PLANT AND EQUIPMENT:
Land and land improvements	4,542,000	3,036,000
Buildings	50,904,000	49,467,000
Machinery and equipment	49,979,000	46,070,000
Property, Plant and Equipment, Gross, Ending Balance	105,425,000	98,573,000
Less allowance for depreciation and amortization	63,634,000	61,850,000
Property, plant, and equipment, net	41,791,000	36,723,000
GOODWILL	18,573,000	15,317,000
INTANGIBLE ASSETS, net	6,926,000	2,624,000
RIGHT-OF-USE LEASE ASSETS	10,731,000	10,161,000
DEFERRED INCOME TAXES	5,506,000	4,642,000
OTHER ASSETS	1,688,000	2,878,000
Assets, Total	411,847,000	420,398,000
CURRENT LIABILITIES:
Accounts payable	34,604,000	32,759,000
Federal and state income taxes	2,552,000	3,163,000
Lease liabilities	577,000	546,000
Accrued liabilities	15,908,000	16,691,000
Total current liabilities	53,641,000	53,159,000
LEASE LIABILITIES - NON-CURRENT	10,154,000	9,616,000
Total liabilities	63,795,000	62,775,000
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Outstanding: 7,062,872 and 7,042,274 shares at December 31, 2022 and 2021, respectively	7,441,000	7,441,000
Paid-in capital	14,799,000	13,743,000
Retained earnings	338,071,000	349,198,000
Accumulated other comprehensive income	(103,000)	20,000
Stockholders' Equity before Treasury Stock	360,208,000	370,402,000
Less treasury stock, at cost, 377,646 and 398,244 shares at December 31, 2022 and 2021, respectively	12,156,000	12,779,000
Total stockholders' equity	348,052,000	357,623,000
Liabilities and Equity, Total	$ 411,847,000	$ 420,398,000