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Summary of Significant Accounting and Reporting Policies (Tables) | 12 Months Ended
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Dec. 31, 2021
Accounting Policies [Abstract] |
Schedule of Allowance for Doubtful Accounts | The following table presents the activity in the Company’s allowance for doubtful accounts:
| Beginning Balance |  | Net Additions/ (Reductions) to Costs and Expenses |  | Net Additions/Deductions and Other Adjustments |  | Ending Balance
Year Ended December 31, 2021: |  |  |  |  |  |  |
Allowance for Doubtful Accounts | $ | 3,464,747 |  |  | $ | — |  |  | $ | (288,542) |  |  | $ | 3,176,205 |
Year Ended December 31, 2020: |  |  |  |  |  |  |
Allowance for Doubtful Accounts | $ | 2,451,293 |  |  | $ | 1,000,000 |  |  | $ | 13,454 |  |  | $ | 3,464,747 |
Year Ended December 31, 2019: |  |  |  |  |  |  |
Allowance for Doubtful Accounts | $ | 2,746,647 |  |  | $ | — |  |  | $ | (295,354) |  |  | $ | 2,451,293 |
Schedule of Assets or Liabilities Having Recurring Measurements | Assets or liabilities that have recurring fair value measurements are shown below as of December 31, 2021 and December 31, 2020:
|  |  | Fair Value Measurements at Reporting Date Using |  |
| Total as of |  | Quoted Prices in Active Markets for Identical Assets |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs |  |
Description | December 31, 2021 |  | (Level I) |  | (Level 2) |  | (Level 3) |  |
Cash & Cash Equivalents | $ | 262,311,670 |  |  | $ | 262,311,670 |  |  | $ | — |  |  | $ | — |  |  |
Short-Term Investments: |  |  |  |  |  |  |  |  |
Certificate of Deposit | 1,507,770 |  |  | 1,507,770 |  |  | — |  |  | — |  |  |
Corporate Bonds | 2,018,440 |  |  | — |  |  | 2,018,440 |  |  | — |  |  |
Other | 1,897,402 |  |  | 1,897,402 |  |  | — |  |  | — |  |  |
Long-Term Investments: |  |  |  |  |  |  |  |  |
Asset-backed Securities | 25,799,513 |  |  | — |  |  | 25,799,513 |  |  | — |  |  |
Certificate of Deposit | 2,056,710 |  |  | 2,056,710 |  |  |  |  | — |  |  |
Corporate Bonds | 40,354,929 |  |  | — |  |  | 40,354,929 |  |  | — |  |  |
Government Securities | 47,944,036 |  |  | — |  |  | 47,944,036 |  |  | — |  |  |
Municipal Bonds | 74,720,480 |  |  | — |  |  | 74,720,480 |  |  | — |  |  |
Total | $ | 458,610,950 |  |  | $ | 267,773,552 |  |  | $ | 190,837,398 |  |  | $ | — |  |  |
|  |  | Fair Value Measurements at Reporting Date Using
| Total as of |  | Quoted Prices in Active Markets for Identical Assets |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs
Description | December 31, 2020 |  | (Level I) |  | (Level 2) |  | (Level 3)
Cash & Cash Equivalents | 423,371,036 |  |  | $ | 423,371,036 |  |  | $ | — |  |  | $ | — |
Short-Term Investments: |  |  |  |  |  |  |
Certificate of Deposit | 1,516,693 |  |  | 1,516,693 |  |  | — |  |  | — |
Corporate Bonds | 7,155,600 |  |  | — |  |  | 7,155,600 |  |  | — |
Government Securities | 6,678,450 |  |  | — |  |  | 6,678,450 |  |  | — |
Municipal Bonds | 10,284,765 |  |  | — |  |  | 10,284,765 |  |  | — |
Other | 1,528,861 |  |  | 1,528,861 |  |  | — |  |  | — |
Long-Term Investments: |  |  |  |  |  |  |
Asset-backed Securities | 37,924,537 |  |  | — |  |  | 37,924,537 |  |  | — |
Certificate of Deposit | 3,645,520 |  |  | 3,645,520 |  |  | — |  |  | — |
Corporate Bonds | 9,024,035 |  |  | — |  |  | 9,024,035 |  |  | — |
Municipal Bonds | 107,407,831 |  |  | — |  |  | 107,407,831 |  |  | — |
Total | $ | 608,537,328 |  |  | $ | 430,062,110 |  |  | $ | 178,475,218 |  |  | $ | — |
Schedule of Amortized Cost, Unrealized Gains And Losses, And Market Value of Investment Securities | The amortized cost, unrealized gains and losses, and market value of investment securities are shown as of December 31, 2021 and 2020:
| Unrealized
2021 | Cost |  | Gains |  | Losses |  | Market Value
Short-Term Investments: |  |  |  |  |  |  |
Certificate of Deposit | $ | 1,500,543 |  |  | $ | 7,227 |  |  | $ | — |  |  | $ | 1,507,770 |
Corporate Bonds | 1,994,639 |  |  | 23,801 |  |  | — |  |  | 2,018,440 |
Other | 1,897,402 |  |  | — |  |  | — |  |  | 1,897,402 |
Long-Term Investments: |  |  |  |  |  |  |
Asset-backed Securities | 26,352,630 |  |  | 34,771 |  |  | (587,888) |  |  | 25,799,513 |
Certificate of Deposit | 2,001,714 |  |  | 54,996 |  |  | — |  |  | 2,056,710 |
Corporate Bonds | 40,716,866 |  |  | 168,416 |  |  | (530,353) |  |  | 40,354,929 |
Government Securities | 48,385,672 |  |  | 55,939 |  |  | (497,575) |  |  | 47,944,036 |
Municipal Bonds | 72,175,568 |  |  | 2,747,964 |  |  | (203,052) |  |  | 74,720,480 |
Total | $ | 195,025,034 |  |  | $ | 3,093,114 |  |  | $ | (1,818,868) |  |  | $ | 196,299,280 |
| Unrealized
2020 | Cost |  | Gains |  | Losses |  | Market Value
Short-Term Investments: |  |  |  |  |  |  |
Certificate of Deposit | $ | 1,502,187 |  |  | $ | 14,506 |  |  | $ | — |  |  | $ | 1,516,693 |
Corporate Bonds | 7,084,638 |  |  | 70,962 |  |  | — |  |  | 7,155,600 |
Governmental Securities | 6,635,132 |  |  | 43,318 |  |  | — |  |  | 6,678,450 |
Municipal Bonds | 10,160,376 |  |  | 124,389 |  |  | — |  |  | 10,284,765 |
Other | 1,528,861 |  |  | — |  |  | — |  |  | 1,528,861 |
Long-Term Investments: |  |  |  |  |  |  |
Asset-backed Securities | 37,681,113 |  |  | 800,802 |  |  | (557,378) |  |  | 37,924,537 |
Certificate of Deposit | 3,503,898 |  |  | 141,622 |  |  | — |  |  | 3,645,520 |
Corporate Bonds | 8,595,020 |  |  | 429,015 |  |  | — |  |  | 9,024,035 |
Municipal Bonds | 100,776,325 |  |  | 6,635,428 |  |  | (3,922) |  |  | 107,407,831 |
Total | $ | 177,467,550 |  |  | $ | 8,260,042 |  |  | $ | (561,300) |  |  | $ | 185,166,292 |
Schedule of Unrealized Losses on Investments | Unrealized losses on investments as of December 31, 2021 are as follows:
| Aggregate Unrealized Losses |  | Aggregate Fair Value
Less than one year | $ | 1,244,053 |  |  | $ | 94,417,123 |
Greater than one year | 574,815 |  |  | 6,875,230 |
Total | $ | 1,818,868 |  |  | $ | 101,292,353 |
Unrealized losses on investments as of December 31, 2020 are as follows:
| Aggregate Unrealized Losses |  | Aggregate Fair Value
Less than one year | $ | 561,300 |  |  | $ | 12,317,187 |
Greater than one year | — |  |  | — |
Total | $ | 561,300 |  |  | $ | 12,317,187 |
Investments Classified by Contractual Maturity Date | Fixed income securities as of December 31, 2021, have contractual maturities as follows:
Due within one year | $ | 3,526,210 |
Due between one and five years | 112,784,662 |
Due over five years | 78,091,006 |
| $ | 194,401,878 |
Schedule of Inventories | Inventories consisted of the following as of December 31, 2021 and 2020:
| 2021 |  | 2020
Raw materials | $ | 235,014,277 |  |  | $ | 151,688,455 |
Work-in-process | 34,032,164 |  |  | 32,791,675 |
Finished goods | 47,221,001 |  |  | 41,811,713 |
Total Inventory | $ | 316,267,442 |  |  | $ | 226,291,843 |
Schedule of Future Minimum Lease Payments | Future minimum lease payments for operating leases as of December 31, 2021 were as follows:
Year ending December 31, |
2022 | $ | 1,352,855 |
2023 | 872,772 |
2024 | 166,652 |
2025 | 7,408 |
Thereafter | 457 |
Total future minimum lease payments | $ | 2,400,144 |
Less imputed interest | (17,638) |
Total | $ | 2,382,506 |
Schedule of Earnings Per Share Basic and Diluted | The following table sets forth the computation of basic and diluted net income per common share under the two-class method for each of the last three years:
| 2021 | 2020 | 2019
Basic Earnings Per Share |  |  |
Net Income | $ | 360,797,232 |  | $ | 347,563,621 |  | $ | 424,683,939 |
Less: Allocated to participating securities | 5,591,992 |  | 4,964,928 |  | 5,028,813 |
Net Income available to common shareholders | $ | 355,205,240 |  | $ | 342,598,693 |  | $ | 419,655,126 |
Basic weighted average shares outstanding | 235,526,911 |  | 242,599,923 |  | 251,766,382 |
Net Income per share - Basic | $ | 1.51 |  | $ | 1.41 |  | $ | 1.67 |
Diluted Earnings Per Share |  |  |
Allocation of Net Income used in basic computation | $ | 355,205,240 |  | $ | 342,598,693 |  | $ | 419,655,126 |
Reallocation of undistributed earnings | 17,014 |  | 14,232 |  | 21,104 |
Net Income available to common shareholders — Diluted | $ | 355,222,254 |  | $ | 342,612,925 |  | $ | 419,676,230 |
Number of shares used in basic computation | 235,526,911 |  | 242,599,923 |  | 251,766,382 |
Additional weighted average dilutive common stock equivalents | 1,077,103 |  | 1,082,069 |  | 1,506,608 |
Diluted weighted average shares outstanding | 236,604,014 |  | 243,681,992 |  | 253,272,990 |
Net income per share — Diluted | $ | 1.50 |  | $ | 1.41 |  | $ | 1.66 |

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