Unaudited Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2019	Dec. 31, 2018	[1]
CURRENT ASSETS
Cash and cash equivalents	$ 260,151,083	$ 217,025,278
Short-term investments	207,156,287	169,412,999
Accounts receivable, net	253,108,715	213,537,799
Inventories	238,676,795	225,281,599
Prepaid expenses and other	28,402,524	25,672,579
Total current assets	987,495,404	850,930,254
PLANT AND EQUIPMENT—NET	491,968,638	498,473,766
OTHER ASSETS
Goodwill	307,365,845	307,365,845
Long-term investments	103,025,468	137,979,082
Intangible assets, net	255,200,000	269,675,000
Patents and other assets, net	22,241,049	21,010,121
Total other assets	687,832,362	736,030,048
Total assets	2,167,296,404	2,085,434,068
CURRENT LIABILITIES
Accounts payable	95,309,797	92,810,316
Accrued liabilities	86,994,334	76,350,603
Total current liabilities	182,304,131	169,160,919
OTHER NON-CURRENT LIABILITIES	6,952,703	0
DEFERRED INCOME TAXES	56,711,307	54,521,489
Total liabilities	245,968,141	223,682,408
SHAREHOLDERS’ INVESTMENT
Common stock	15,178,860	15,559,717
Additional paid-in capital	799,462,368	745,324,144
Retained earnings	1,107,449,540	1,102,468,137
Accumulated other comprehensive income (loss)	(762,505)	(1,600,338)
Total shareholders’ investment	1,921,328,263	1,861,751,660
Total liabilities and shareholders’ investment	$ 2,167,296,404	$ 2,085,434,068

[1] The condensed consolidated balance sheet at December 31, 2018 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.