Equity Incentive Plan - Summary of Company's Outstanding Restricted Common Stock (Detail) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares shares
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted		75,663
Expected future remaining compensation expense \| $	$ 982	$ 982
Expected future compensation expense, restricted shares remaining vesting period		2 years 8 months 19 days
Restricted Shares Awarded on March 14, 2020 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted		1,933
Date of Award		Mar. 14, 2020
Expected future remaining compensation expense \| $	9	$ 9
Expected future compensation expense, restricted shares remaining vesting period		3 months
Restricted Shares Awarded on March 3, 2021 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted		4,693
Date of Award		Mar. 03, 2022
Expected future remaining compensation expense \| $	51	$ 51
Expected future compensation expense, restricted shares remaining vesting period		1 year 3 months
Restricted Shares Awarded on March 3, 2022 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted		6,586
Date of Award		Mar. 03, 2022
Expected future remaining compensation expense \| $	112	$ 112
Expected future compensation expense, restricted shares remaining vesting period		2 years 3 months
Restricted Shares Awarded on March 3, 2022 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted		3,481
Date of Award		Mar. 03, 2021
Expected future remaining compensation expense \| $	21	$ 21
Expected future compensation expense, restricted shares remaining vesting period		3 months
Restricted Shares Awarded on March 14, 2023 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted		12,702
Date of Award		Mar. 14, 2023
Expected future remaining compensation expense \| $	206	$ 206
Expected future compensation expense, restricted shares remaining vesting period		3 years 3 months
Restricted Shares Awarded on March 14, 2023 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted		11,757
Date of Award		Mar. 14, 2023
Expected future remaining compensation expense \| $	161	$ 161
Expected future compensation expense, restricted shares remaining vesting period		1 year 3 months
Restricted Shares Awarded on March 12, 2024 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted		25,223
Date of Award		Mar. 12, 2024
Expected future remaining compensation expense \| $	311	$ 311
Expected future compensation expense, restricted shares remaining vesting period		4 years 3 months
Restricted Shares Awarded on March 12, 2024 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted		9,288
Date of Award		Mar. 12, 2024
Expected future remaining compensation expense \| $	$ 111	$ 111
Expected future compensation expense, restricted shares remaining vesting period		2 years 3 months
Restricted Stock [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Nonvested at beginning of period	91,419	85,670
Number of Restricted Shares, Granted	0	51,578
Number of Restricted Shares, Vested	(15,756)	(60,067)
Number of Restricted Shares, Forfeited	0	(1,518)
Number of Restricted Shares, Nonvested at end of period	75,663	75,663
Weighted Average Grant Date Fair Value, Nonvested at beginning of period \| $ / shares	$ 19.21	$ 21.88
Weighted Average Grant Date Fair Value, Granted \| $ / shares	0	15.03
Weighted Average Grant Date Fair Value, Vested \| $ / shares	19.6	19.81
Weighted Average Grant Date Fair Value, Forfeited \| $ / shares	0	21.41
Weighted Average Grant Date Fair Value, Nonvested at end of period \| $ / shares	$ 19.13	$ 19.13

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Publisher FASB
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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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