Equity Incentive Plan - Summary of Company's Restricted Stock (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	85,670
Expected future remaining compensation expense | $	$ 1,104
Expected future compensation expense, restricted shares remaining vesting period	2 years 18 days
Restricted Shares Awarded on March 14, 2019 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	1,924
Date of Award	Mar. 14, 2019
Expected future remaining compensation expense | $	$ 0
Expected future compensation expense, restricted shares remaining vesting period	0 years
Restricted Shares Awarded on March 14, 2020 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	4,265
Date of Award	Mar. 14, 2020
Expected future remaining compensation expense | $	$ 41
Expected future compensation expense, restricted shares remaining vesting period	1 year
Restricted Shares Awarded on March 3, 2021 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	7,776
Date of Award	Mar. 03, 2021
Expected future remaining compensation expense | $	$ 91
Expected future compensation expense, restricted shares remaining vesting period	1 year
Restricted Shares Awarded on March 3, 2021 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	6,793
Date of Award	Mar. 03, 2021
Expected future remaining compensation expense | $	$ 0
Expected future compensation expense, restricted shares remaining vesting period	0 years
Restricted Shares Awarded on March 3, 2022 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	9,554
Date of Award	Mar. 03, 2022
Expected future remaining compensation expense | $	$ 164
Expected future compensation expense, restricted shares remaining vesting period	3 years
Restricted Shares Awarded on March 3, 2022 Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	10,421
Date of Award	Mar. 03, 2022
Expected future remaining compensation expense | $	$ 128
Expected future compensation expense, restricted shares remaining vesting period	1 year
Restricted Shares Awarded on March 14, 2023 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	17,103
Date of Award	Mar. 14, 2023
Expected future remaining compensation expense | $	$ 275
Expected future compensation expense, restricted shares remaining vesting period	4 years
Restricted Shares Awarded on March 14, 2023[Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted	27,834
Date of Award	Mar. 14, 2023
Expected future remaining compensation expense | $	$ 405
Expected future compensation expense, restricted shares remaining vesting period	2 years
Restricted Stock [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Nonvested at beginning of period	70,096
Number of Restricted Shares, Granted	47,536
Number of Restricted Shares, Vested	(30,222)
Number of Restricted Shares, Forfeited	(1,740)
Number of Restricted Shares, Nonvested at end of period	85,670
Weighted Average Grant Date Fair Value, Nonvested at beginning of period | $ / shares	$ 21.88
Weighted Average Grant Date Fair Value, Granted | $ / shares	21.85
Weighted Average Grant Date Fair Value, Vested | $ / shares	21.62
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	21.74
Weighted Average Grant Date Fair Value, Nonvested at end of period | $ / shares	$ 21.88