Unaudited Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2020	Dec. 31, 2019	[1]
CURRENT ASSETS
Cash and cash equivalents	$ 343,811,484	$ 296,321,622
Short-term investments	70,015,164	140,384,053
Accounts receivable, net	170,643,014	235,410,326
Inventories	259,728,189	248,941,855
Prepaid expenses and other	15,128,837	29,319,036
Total current assets	859,326,688	950,376,892
PLANT AND EQUIPMENT—NET	485,314,868	498,316,100
OTHER ASSETS
Goodwill	309,033,022	307,365,845
Long-term investments	171,134,695	139,909,323
Intangible assets, net	251,725,000	250,375,000
Patents and other assets, net	24,507,260	22,460,033
Total other assets	756,399,977	720,110,201
Total assets	2,101,041,533	2,168,803,193
CURRENT LIABILITIES
Accounts payable	60,183,429	97,553,917
Current portion of long-term debt	75,000,000	0
Accrued liabilities	82,447,668	74,292,883
Total current liabilities	217,631,097	171,846,800
OTHER NON-CURRENT LIABILITIES	10,306,855	7,414,424
DEFERRED INCOME TAXES	50,496,168	51,454,149
Total liabilities	278,434,120	230,715,373
SHAREHOLDERS’ INVESTMENT
Common stock	14,746,529	15,076,651
Additional paid-in capital	818,678,880	807,928,139
Retained earnings	986,442,760	1,116,372,133
Accumulated other comprehensive income (loss)	2,739,244	(1,289,103)
Total shareholders’ investment	1,822,607,413	1,938,087,820
Total liabilities and shareholders’ investment	$ 2,101,041,533	$ 2,168,803,193

[1] The condensed consolidated balance sheet at December 31, 2019 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.