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Shareholders' Equity and Share Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Jan. 20, 2021 USD ($) $ / shares shares	Sep. 10, 2020 $ / shares shares	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($)	Aug. 16, 2021 shares	Dec. 31, 2020 shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Common Stock, Shares, Issued			86,241,701		86,241,701		4,707,113	66,911,811
Commencing date					May 26, 2021
Terminating date					May 25, 2022
Purchase of common shares			4,062,309		4,062,309
Common shares purchase percentage					0.05
Stock repurchased during period, shares					536,052
Stock repurchased cost | $			$ 1,020		$ 5,000
Shares issued in pubic offering, net of issuance costs (in shares)	10,887,097	9,396,226
Purchase price | $ / shares	$ 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 | $ / shares		$ 5.80
Warrants exercisable beginning date		Mar. 10, 2021
Warrants exercisable expiration date		Sep. 10, 2025
Number of warrants exercised			3,188,680		3,188,680
Share based compensation expense | $			$ 1,820	$ 472	$ 5,705	$ 1,329

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