Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of Components of Provision For Income Taxes

The components of the provision for income taxes are as follows:

	2022		2021		2020
Currently payable:
Federal	$	62,670,986	$	89,507,896	$	67,606,617
State	4,310,783		5,642,926		10,180,218
Foreign	1,761,732		2,098,433		1,882,195
Total	68,743,501		97,249,255		79,669,030
Deferred income tax benefit:
Primarily federal	(17,777,777)		(41,694,751)		(15,419,722)
Provision for income taxes	$	50,965,724	$	55,554,504	$	64,249,308

Schedule of Effective Income Tax Rates Different from Statutory Federal Income Tax Rates

The effective income tax rates are different from the statutory federal income tax rates for the following reasons:

	2022		2021		2020
Statutory federal income tax rate	21.0	%	21.0	%	21.0	%
State income taxes, net of federal income tax benefit	0.9		0.7		2.1
Research tax credit	(1.8)		(1.0)		(1.4)
(Decrease) Increase in reserve for uncertain tax provisions	(0.2)		0.1		(0.1)
Non-deductible executive compensation	0.3		0.1		—
Non-deductible expenses	0.3		—		0.1
Foreign tax credit	(0.3)		(0.2)		(0.1)
Foreign derived intangible income deduction	(6.2)		(6.3)		(5.2)
Stock compensation	(0.6)		(1.3)		(1.0)
Other	0.4		0.2		0.2
Effective income tax rate	13.8	%	13.3	%	15.6	%

Schedule of Deferred Income Tax Assets And Liabilities

The tax effect of temporary differences which give rise to deferred income tax assets and liabilities at    December 31, 2022 and 2021, are as follows: 

	December 31,
	2022		2021
Assets:
Accruals not currently deductible	$	9,778,184	$	12,823,493
Research and development costs	58,501,232		49,099,538
Stock based compensation	14,670,250		13,707,737
Other	4,722,513		2,118,484
Total deferred income tax assets	$	87,672,179	$	77,749,252
Liabilities:
Excess tax over book depreciation	$	(3,460,485)	$	(20,728,577)
Goodwill	(42,580,026)		(37,999,022)
Intangible assets	(13,268,772)		(11,718,904)
Other	(2,834,196)		(2,507,071)
Total deferred income tax liabilities	$	(62,143,479)	$	(72,953,574)
Net deferred income taxes	$	25,528,700	$	4,795,678

Schedule of Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

	2022		2021		2020
Beginning of year	$	5,275,000	$	4,864,000	$	6,392,000
Additions based on tax positions related to the current year	951,000		1,023,000		918,000
Additions for tax positions in prior years	353,000		364,000		770,000
Reductions for tax positions in prior years	(26,000)		(51,000)		(2,907,000)
Reductions as a result of a lapse of the applicable statute of limitations	(1,923,000)		(925,000)		(309,000)
End of year	$	4,630,000	$	5,275,000	$	4,864,000