Restricted Stock, Restricted Stock Units, and Stock Options - Additional Information (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) Incentive_Plan shares	Jun. 30, 2022 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans | Incentive_Plan			3
Market value of shares | $			$ 2.8	$ 2.6
Stock options outstanding	0		0
Share-based compensation expense | $	$ 0.4	$ 0.8	$ 0.6	$ 0.8
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued, shares			18,561	40,959
Restricted Stock [Member] | Officers and Employees and Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued, shares				13,211
Restricted Stock [Member] | Non Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued, shares			9,856
Restricted Stock Units (RSUs) [Member] | Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued, shares			9,064