Stock Options and Restricted Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended				6 Months Ended			12 Months Ended
	Jun. 15, 2018	Jun. 30, 2024		Mar. 31, 2024		Jun. 30, 2024		Jun. 30, 2023	Dec. 31, 2023		Dec. 31, 2022	Feb. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option outstanding		943,041	[1]	946,054	[1]	943,041	[1]		959,522		1,061,849
Stock option exercisable		854,742	[1]			854,742	[1]		697,647
Unvested shares of common stock outstanding		88,299		88,445		88,299			261,875
Number of shares vested and settled						234,330
Intrinsic value of options vested		$ 0.4				$ 0.4
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding		326,680				326,680
Number of shares outstanding, vested restricted stock units		234,330				234,330
Restricted Stock Units [Member] | Vest on June 11, 2025 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, granted		92,350				92,350
Weighted average grant price, granted						$ 8.23
Restricted Stock Units [Member] | Vest on June 22, 2024 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, granted									83,158
Weighted average grant price, granted									$ 9.14
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding		887,665	[2]	889,361	[2]	887,665	[2]		995,376		857,288
Number of shares vested and settled		0		400,985	[3]				248,898	[3]
Weighted average fair value of options granted						$ 0		$ 0
Number of shares, granted		0		296,178		296,178		316,483	399,793
Weighted average grant price, granted		$ 0		$ 8.97					$ 8.34
PSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, granted		215,687				215,687			296,444
Weighted average grant price, granted		$ 8.97				$ 8.97			$ 6.08
Unvested Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding, performance stock units		512,131				512,131
Maximum [Member] | PSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage									200.00%
Minimum [Member] | PSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage									0.00%
2018 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant		5,710,968				5,710,968
Shares were rolled into the 2018 Plan		1,379,328				1,379,328
2018 Equity Incentive Plan [Member] | Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding		92,350				92,350
2018 Restricted Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested shares of common stock outstanding		887,665				887,665
2015 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant	258,334											300,000
2015 Director Plan [Member] | Non Employee Director One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant	12,000
2015 Director Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	10 years
Amended Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant												200,000
Number of additional shares available for issuance		0				0
Amended Director Plan [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant		9,000				9,000
Amended Director Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	10 years

[1] The aggregate intrinsic value of outstanding options, which represents the difference between the price of the Company’s common stock at June 30, 2024 and the related exercise price of the underlying options, was $1.1 million for outstanding options and $1.0 million for vested options as of June 30, 2024. The remaining contractual life was 5.6 years for outstanding options and 5.5 years for vested options at June 30, 2024

[2] The aggregate fair value of the restricted stock was $6.8 million as of June 30, 2024. The remaining vesting period was 2.7 years at June 30, 2024.

[3] The aggregate fair value of the restricted stock vested was $2.7 million for the six months ended June 30, 2024 and $2.1 million for the year ended December 31, 2023