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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2021
Fair Value Disclosures [Abstract] |
Summary of Company's Available for Sale Securities | The following is a summary of the Company’s available-for-sale securities as of June 30, 2021 and December 31, 2020:
|  | June 30, 2021 |
|  |  |  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
Description |  | Effective Maturity |  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
Corporate bonds |  | 2021-2022 |  | $ | 368,182,546 |  |  | $ | 103,619 |  |  | $ | (93,213 | ) |  | $ | 368,192,952 |
Corporate bonds |  | 2022-2023 |  |  | 178,904,470 |  |  |  |  |  |  |  | (496,456 | ) |  |  | 178,408,014 |
Government securities |  | 2022 |  |  | 5,248,638 |  |  |  | — |  |  |  | (494 | ) |  |  | 5,248,144 |
Total |  |  |  | $ | 552,335,654 |  |  | $ | 103,619 |  |  | $ | (590,163 | ) |  | $ | 551,849,110 |
|  | December 31, 2020 |
|  |  |  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
Description |  | Effective Maturity |  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
Corporate bonds |  | 2021 |  | $ | 99,596,821 |  |  | $ | 560,797 |  |  | $ | — |  |  | $ | 100,157,618 |
Total |  |  |  | $ | 99,596,821 |  |  | $ | 560,797 |  |  | $ | — |  |  | $ | 100,157,618 |
Schedule of Assets Accounted for at Fair Value on Recurring Basis | The following table sets forth, by level, the Company’s assets that were accounted for at fair value on a recurring basis.
|  | June 30, 2021 |
Description |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds and government securities |  | $ | — |  |  | $ | 551,849,110 |  |  | $ | — |  |  | $ | 551,849,110 |
|  | December 31, 2020 |
Description |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | — |  |  | $ | 100,157,618 |  |  | $ | — |  |  | $ | 100,157,618 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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