Consolidated Balance Sheets - USD ($)	Dec. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents	$ 87,657,000	$ 70,711,000
Marketable securities	26,454,000	24,863,000
Accounts receivable	49,323,000	71,362,000
Less allowance for doubtful accounts	596,000	338,000
Accounts receivable, net	48,727,000	71,024,000
Inventories:
Finished goods	31,815,000	36,249,000
Work in process	144,684,000	105,564,000
Raw materials and supplies	13,921,000	10,324,000
Inventory, net	190,420,000	152,137,000
Notes receivable, current	1,629,000	2,226,000
Other current assets	5,223,000	5,671,000
Total current assets	360,110,000	326,632,000
PROPERTY, PLANT AND EQUIPMENT:
Land and land improvements	3,107,000	4,542,000
Buildings	52,182,000	50,904,000
Machinery and equipment	51,721,000	49,979,000
Property, Plant and Equipment, Gross	107,010,000	105,425,000
Less allowance for depreciation and amortization	67,774,000	63,634,000
Property, plant, and equipment, net	39,236,000	41,791,000
GOODWILL	19,433,000	18,573,000
INTANGIBLE ASSETS, net	5,290,000	6,926,000
RIGHT-OF-USE LEASE ASSETS	10,664,000	10,731,000
DEFERRED INCOME TAXES	5,803,000	5,506,000
OTHER ASSETS	0	1,688,000
Assets	440,536,000	411,847,000
CURRENT LIABILITIES:
Accounts payable	38,232,000	28,944,000
Federal and state income taxes	2,539,000	2,552,000
Lease liabilities	678,000	577,000
Accrued liabilities	30,570,000	21,568,000
Total current liabilities	72,019,000	53,641,000
LEASE LIABILITIES - NON-CURRENT	9,986,000	10,154,000
FEDERAL AND STATE INCOME TAXES - NON-CURRENT	2,275,000	0
Total liabilities	84,280,000	63,795,000
STOCKHOLDERS' EQUITY
Common stock, $1 par value: Authorized: 12,000,000 shares at December 31, 2023 and 2022 Issued: 7,440,518 shares at December 31, 2023 and 2022Outstanding: 7,084,384 and 7,062,872 shares at December 31, 2023 and 2022, respectively	7,441,000	7,441,000
Paid-in capital	16,031,000	14,799,000
Retained earnings	344,245,000	338,071,000
Accumulated other comprehensive income (loss)	22,000	(103,000)
Stockholders' Equity before Treasury Stock	367,739,000	360,208,000
Less treasury stock, at cost, 356,134 and 377,646 shares at December 31, 2023 and 2022, respectively	11,483,000	12,156,000
Total stockholders' equity	356,256,000	348,052,000
Liabilities and Equity	$ 440,536,000	$ 411,847,000