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Employee Benefit Plans - Summary of Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Detail) - Supplemental Employee Retirement Plan [Member] - USD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income |  |
Net actuarial (gain) loss | $ (348,736) | $ 1,345,943
Recognized actuarial (gain) loss | (171,677) |
Total recognized in other comprehensive income (before tax effects) | (520,413) | 1,345,943
Total recognized in net benefit cost and other comprehensive income (before tax effects) | $ (125,887) | $ 1,625,721

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- Definition Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 + Details
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