Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 1,725	$ 1,439
Share-based compensation arrangement by share-based payment award, options, outstanding, number (in shares)	0		0
Options granted (in shares)	0	0
Options exercised (in shares)	0	0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	18,520
Granted (in usd per share)	$ 17.95
Vesting period	9 months 18 days
Share-based compensation expense	$ 83	$ 87
Restricted Stock \| 2018 Omnibus Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 249
Restricted Stock \| 2018 Omnibus Equity Incentive Plan \| Non-Employee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	18,520	17,722
Granted (in usd per share)	$ 17.95	$ 19.74
Vesting period	1 year	1 year
Share-based compensation expense	$ 332	$ 350
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	269,070
Granted (in usd per share)	$ 19.15
Share-based compensation expense	$ 1,600	$ 1,400
Unrecognized compensation cost	$ 8,600
Unrecognized compensation expense, period of recognition	1 year 8 months 23 days
RSUs \| 2018 Omnibus Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	269,070	298,554
Granted (in usd per share)	$ 19.15	$ 18.07
Vesting period	3 years	3 years
Share-based compensation expense	$ 1,700	$ 1,800
RSUs \| 2018 Omnibus Equity Incentive Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	2 years
RSUs \| 2018 Omnibus Equity Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years

Average annual compensation cost over vesting period.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of noncash expense for share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Number of share options (or share units) exercised during the current period.

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