Provision for income tax expense included in the financial statements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Continuing operations	$ 10,281	$ 3,207	$ 2,962
Discontinued operations	0	0	2,542
Income tax expense benefit	10,281	3,207	5,504
Comprehensive income	(209)	(92)	602
Total tax expense	$ 10,072	$ 3,115	$ 6,106