Consolidated Balance Sheets - USD ($)	Dec. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 262,311,670	$ 423,371,036
Short-term investments	5,423,612	27,164,369
Accounts receivable, net	249,794,906	284,925,335
Inventories, net	316,267,442	226,291,843
Prepaid expenses and other	39,178,119	17,577,981
Total current assets	872,975,749	979,330,564
PLANT AND EQUIPMENT:
Land, buildings and improvements	363,646,380	350,574,243
Machinery and equipment	883,240,100	857,583,647
Construction-in-process	77,592,152	49,048,555
Total Plant and Equipment	1,324,478,632	1,257,206,445
Less- Accumulated depreciation	(860,356,956)	(789,071,310)
Net Plant and Equipment	464,121,676	468,135,135
OTHER ASSETS:
Goodwill	313,960,209	311,922,787
Long-term investments	207,693,147	162,028,068
Intangible assets, net	239,189,627	249,748,127
Patents and other assets, net	33,450,758	26,776,489
Total Other Assets	794,293,741	750,475,471
TOTAL ASSETS	2,131,391,166	2,197,941,170
CURRENT LIABILITIES:
Accounts payable	98,342,928	84,784,423
Accrued liabilities:
Salaries, wages and vacation	14,019,643	18,557,799
Income taxes	196,863	3,790,219
Royalties	19,140,907	21,056,412
Dividends payable	28,372,901	29,243,144
Other	21,582,858	20,304,860
Total current liabilities	181,656,100	177,736,857
OTHER NON-CURRENT LIABILITIES	11,746,599	17,300,442
DEFERRED INCOME TAXES	0	38,960,743
TOTAL LIABILITIES	193,402,699	233,998,042
SHAREHOLDERS’ INVESTMENT:
Common stock, par value 0.06 per share; 400,000,000 shares authorized; 236,440,840 and 243,692,869 shares issued and outstanding in 2021 and 2020 respectively.	14,186,450	14,621,572
Additional paid-in capital	879,413,385	852,771,508
Retained earnings	1,042,461,388	1,089,698,996
Accumulated other comprehensive income:
Unrealized gain on investments, net	1,006,655	6,082,007
Cumulative translation adjustment	920,589	769,045
Total shareholders’ investment	1,937,988,467	1,963,943,128
TOTAL LIABILITIES AND SHAREHOLDERS' INVESTMENT	$ 2,131,391,166	$ 2,197,941,170