Earnings (loss) per share - Schedule of Loss Per Share, Basic and Diluted (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net loss	$ 5,493	$ 8,896	$ (4,652)	$ (14,265)	$ 2,454	$ (2,084)	$ (1,583)	$ 5,816	$ (4,528)	$ 4,603	$ 5,820
Basic weighted-average shares outstanding									141,015,213
Dilutive effect of share-based awards									0
Diluted weighted-average shares outstanding									141,015,213
Basic loss per share									$ (0.03)
Diluted loss per share									$ (0.03)