UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income from consolidated operations	$ 190,524,495	$ 194,271,153
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	52,880,443	47,942,132
Gain on disposal of assets	(133,576)	(1,261,727)
Loss on disposal of assets	791	29,782
Gain on sale of investments and technology investment income	(832,046)	(4,708,185)
Loss on sale of investments and technology investment losses	5,163,260	29,061,771
Deferred tax expense	(5,593,627)	(11,232,239)
Stock-based compensation expense related to employee stock options, employee stock purchases and restricted stock	16,160,289	21,396,790
Impairment charge	6,182,000	0
Change in operating assets and liabilities:
Accounts receivable, net	(20,896,565)	15,244,187
Inventories	57,495,782	(61,019,277)
Prepaid expenses and other	2,765,009	(3,559,130)
Accounts payable	5,032,376	17,318,424
Accrued liabilities, excluding dividends declared	5,896,241	15,643,764
Net cash provided by operating activities	314,644,872	259,127,445
Activity in investments:
Sales proceeds	48,810,102	19,649,880
Maturities and calls	1,655,000	6,260,000
Purchases	(17,331,563)	(60,360,047)
Plant and equipment additions	(67,834,222)	(63,634,852)
Proceeds from sale of plant and equipment	245,105	127,000
Acquisition of businesses, net of cash acquired	(143,328,862)	0
Increase in other assets	(3,573,774)	(4,120,881)
Net cash used for investing activities	(181,358,214)	(102,078,900)
CASH FLOWS USED FOR FINANCING ACTIVITIES:
Issuance of common stock from stock plan transactions	6,283,742	20,242,309
Cash dividends paid	(54,244,161)	(55,517,709)
Repurchases of common stock	(198,870,165)	(87,966,213)
Net cash used for financing activities	(246,830,584)	(123,241,613)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(113,543,926)	33,806,932
CASH and CASH EQUIVALENTS, beginning of period	233,318,766	226,435,019
CASH and CASH EQUIVALENTS, end of period	119,774,840	260,241,951
Non-cash investing and financing activities:
Change in property and equipment in accounts payable and accrued expenses and other current liabilities	$ 13,722,396	$ (912,142)