Stock Options and Restricted Stock - Summary of Activity for Stock Option Programs (Detail) - $ / shares		3 Months Ended		12 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options beginning balance		871,228	550,040	144,666
Granted		0	335,773	449,450
Cancelled		(1,623)	(14,585)	(44,076)
Exercised	[1]	0	0	0
Number of options ending balance		869,605	871,228	550,040
Options exercisable	[2]	179,079
Exercise price per share, lower range limit beginning balance		$ 2.14	$ 2.14	$ 2.14
Exercise price per share, upper range limit beginning balance		13.53	13.53	13.84
Exercise price per share, granted			6.68
Exercise price per share, exercised	[1]		0	0
Exercise price per share, lower range limit ending balance		2.14	2.14	2.14
Exercise price per share, upper range limit ending balance		13.53	13.53	13.53
Exercise price per share, option exercisable lower range limit	[2]	2.14
Exercise price per share, option exercisable upper range limit	[2]	13.53
Weighted average exercise price, beginning balance		6.62	6.58	7.23
Weighted average exercise price, granted			6.68	6.61
Weighted average exercise price, cancelled		6.90	6.67	9.00
Weighted average exercise price, exercised	[1]		0	0
Weighted average exercise price, ending balance		6.62	6.62	6.58
Weighted average exercise price, options exercisable	[2]	6.63
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price per share, granted				5.21
Exercise price per share, cancelled		6.55	6.55	6.55
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price per share, granted				7.25
Exercise price per share, cancelled		$ 7.25	$ 7.25	$ 13.84

[1] 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 for the three and six months ended June 30, 2020 and 2019.

[2] The aggregate intrinsic value, which represents the difference between the price of the Company’s common stock at June 30, 2020 and the related exercise price of the underlying options, was $9,000 for outstanding options and $8,000 for exercisable options as of June 30, 2020. The remaining contractual life was 8.85 years for outstanding options and 7.49 years for exercisable options at June 30, 2020.