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Shareholders' Equity and Share Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Jan. 20, 2021	Sep. 10, 2020	Mar. 31, 2021	Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Shares issued in pubic offering, net of issuance costs (in shares)	10,887,097	9,396,226
Purchase price	$ 12.40
Proceeds from issuance of common stock before placement agent fees and offering expense	$ 135,000
Description of units sold		Each unit that was sold consisted of one common share of the Company and one-half (0.5) of a warrant to purchase a common share of the Company
Class of warrant or right, exercise price of warrants or rights		$ 5.80
Warrants exercisable beginning date		Mar. 10, 2021
Warrants exercisable expiration date		Sep. 10, 2025
Number of warrants exercised			3,045,283
Share based compensation expense			$ 1,998	$ 529