Income (loss) per common share - Summary of computation of basic and diluted income (loss) per common share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net income (loss) from continuing operations	$ 1,074	$ (79,305)
Income (loss) from discontinued operations, net of income taxes	110,923	(93,110)
Net income (loss)	$ 111,997	$ (172,415)
Denominator:
Weighted average common shares for basic income (loss) per common share	9,028	7,960
Effect of dilutive securities	338	0
Weighted average common shares for diluted income (loss) per common share	9,366	7,960
Income (loss) per common share, basic:
Basic	$ 0.12	$ (9.96)
Diluted	0.11	(9.96)
Income (loss) per common share, diluted:
Basic	12.29	(11.70)
Diluted	$ 11.84	$ (11.70)