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Compensation Plans - Narrative (Detail) - USD ($) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Deferred compensation equity | $ (21,087,626) |  | $ (17,011,144)
Fully vested employee elected deferral period | 5 years |  |
Deferred compensation liability | $ 33,214,525 |  | $ 30,744,990
Proceeds received under employee stock purchase plan | $ 335,044 | $ 424,435 |
Employer 401(k) match, contributions equal to | 250.00% |  |
401(k) plan, percent of employee's compensation matched | 6.00% |  |
2014 Equity and Cash Incentive Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares authorized for issuance (in shares) | 300,000 |  |
Common shares available for issuance (in shares) | 237,648 |  |
Employee Stock Purchase Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock Purchased During Period, Shares, Employee Stock Purchase Plans | 2,378 | 2,692 |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent | 85.00% |  |
Proceeds received under employee stock purchase plan | $ 300,000 | $ 400,000 |
Share-based payment expense | $ 100,000 | $ 100,000 |

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