Income taxes: Components of (loss) income before income taxes (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Components of income before income taxes
Domestic	$ 3,352	$ 28,502
Foreign	(1,674)	(2,301)
Total income before income taxes	$ 1,678	$ 26,201

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details