Stock Options and Restricted Stock - Summary of Activity for Stock Option Programs (Detail) - $ / shares		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options beginning balance		951,669	[1]	550,040		144,666
Granted		317,398		444,557
Cancelled		(113,310)		(42,928)		(44,076)
Exercise of stock options,shares	[2]	44,070		0		0
Number of options ending balance		1,111,687	[1]	951,669	[1]	550,040
Options exercisable		320,922		178,307	[1]	62,778
Exercise price per share, lower range limit beginning balance		$ 2.14	[1]	$ 2.14		$ 2.14
Exercise price per share, upper range limit beginning balance				13.53		13.84
Exercise price per share, exercised	[2]			0		0
Exercise price per share, lower range limit ending balance		2.14	[1]	2.14	[1]	2.14
Exercise price per share, upper range limit ending balance		12.55	[1]			13.53
Exercise price per share, option exercisable lower range limit		2.14		2.14	[1]	2.14
Exercise price per share, option exercisable upper range limit		12.55		12.55	[1]	13.53
Weighted average exercise price, beginning balance		6.41	[1]	6.58		7.23
Weighted average exercise price, granted		6.79		6.24		6.61
Weighted average exercise price, cancelled		6.64		6.91		9.00
Weighted average exercise price, exercised	[2]	5.58		0		0
Weighted average exercise price, ending balance		6.41	[1]	6.41	[1]	6.58
Weighted average exercise price, options exercisable		6.53		6.33	[1]	$ 7.60
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted						449,450
Exercise price per share, granted				4.89		$ 5.21
Exercise price per share, cancelled		4.89		2.22		6.55
Exercise price per share, exercised		5.21
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price per share, upper range limit beginning balance	[1]	12.55
Exercise price per share, granted		6.79		6.68		7.25
Exercise price per share, cancelled		11.53		13.53		$ 13.84
Exercise price per share, exercised		$ 7.25
Exercise price per share, upper range limit ending balance	[1]			$ 12.55

[1] The aggregate intrinsic value, which represents the difference between the price of the Company’s common stock at December 31, 2021 and the related exercise price of the underlying options, was $0.1 million for outstanding options and $0.1 million for exercisable options as of December 31, 2021. The remaining contractual life was 8.03 years for outstanding options and 7.07 years for exercisable options at December 31, 2021.

[2] The aggregate intrinsic value, which represents the difference between the price of the Company’s common stock at the exercise date and the related exercise price of the underlying options, was $0.2 million for the year ended December 31, 2021 and $0 for the years ended December 31, 2020, and 2019.