Stockholders' Equity - Summary of Shares Issued and Held in Treasury or Outstanding (Detail) - shares |
Sep. 30, 2022 |
Dec. 31, 2021 |
---|---|---|
Class A Common Stock [Member] | ||
Class Of Stock [Line Items] | ||
Common stock - issued | 20,201,905 | 20,077,059 |
Common stock - held in treasury | (4,184,071) | (3,316,944) |
Common stock - outstanding | 16,017,834 | 16,760,115 |
Class B Common Stock [Member] | ||
Class Of Stock [Line Items] | ||
Common stock - issued | 234,903 | 234,903 |
Common stock - held in treasury | (234,903) | (234,903) |
Common stock - outstanding | 0 | 0 |