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Consolidated Balance Sheets (USD $) | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
ASSETS |  |
Cash and cash equivalents | $ 389,678,664 | $ 357,986,774
Short-term investments | 60,802,856 | 60,808,237
Accounts receivable | 109,579,693 | 110,389,715
Inventories | 159,930,266 | 188,753,312
Prepaid expenses and other | 24,671,561 | 34,354,946
Total current assets | 744,663,040 | 752,292,984
PLANT AND EQUIPMENT: |  |
Land, buildings and improvements | 198,156,137 | 130,290,789
Machinery and equipment | 472,844,579 | 415,394,183
Construction-in-process | 45,092,001 | 58,244,561
Plant and equipment, gross | 716,092,717 | 603,929,533
Less-Accumulated depreciation and amortization | (366,154,545) | (321,387,945)
Plant and equipment, net | 349,938,172 | 282,541,588
OTHER ASSETS: |  |
Long-term investments | 141,834,034 | 128,168,165
Patents and other assets, net | 29,256,089 | 13,024,265
Total other assets | 171,090,123 | 141,192,430
TOTAL ASSETS | 1,265,691,335 | 1,176,027,002
LIABILITIES AND SHAREHOLDERS’ INVESTMENT |  |
Accounts payable | 43,200,002 | 65,470,573
Accrued liabilities: |  |
Salaries, wages and vacation | 7,188,092 | 6,558,638
Income taxes | 1,582,570 | 0
Royalties | 9,889,708 | 6,745,877
Dividends declared | 18,599,926 | 17,288,348
Other | 7,497,144 | 4,631,064
Total current liabilities | 87,957,442 | 100,694,500
DEFERRED INCOME TAXES | 56,773,337 | 48,213,981
SHAREHOLDERS’ INVESTMENT: |  |
Preferred stock, no par value, 5,000,000 shares authorized; none issued or outstanding | 0 | 0
Common stock, par value $.06 per share; 200,000,000 shares authorized; 143,076,357 shares issued and outstanding in 2012 and 144,069,563 shares issued and outstanding in 2011 | 8,584,581 | 8,644,174
Additional paid-in capital | 418,766,010 | 395,229,891
Retained earnings | 676,039,254 | 610,702,253
Accumulated other comprehensive income: |  |
Unrealized gain on investments | 15,111,778 | 10,412,246
Cumulative translation adjustment | 2,458,933 | 2,129,957
Total shareholders’ investment | 1,120,960,556 | 1,027,118,521
TOTAL LIABILITES AND SHAREHOLDERS' INVESTMENT | $ 1,265,691,335 | $ 1,176,027,002

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