Consolidated income tax provision (benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Summary of consolidated income tax provision (benefit)
Current income taxes	$ 186	$ (480)
Deferred Income Tax Expense (Benefit)	6,212	21,391
Income tax provision (benefit)	$ 6,398	$ 20,911