Financial Instruments - Carrying Value and Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands |
Sep. 30, 2023 |
Dec. 31, 2022 |
---|---|---|
Carrying Amount | ||
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] | ||
Cash and cash equivalents | $ 17,595 | $ 26,748 |
Fair Value | ||
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] | ||
Cash and cash equivalents | $ 17,595 | $ 26,748 |