Investments and other assets - Components of Investments and Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Investments, All Other Investments [Abstract]
Cash value insurance	$ 50,817	$ 53,189
Available-for-sale debt security	0	23,800
Equity method investments	17,382	21,986
Other equity investments	20,158	20,331
Deferred debt issuance costs	4,924	5,805
Other long-term assets	41,799	27,397
Total	$ 135,080	$ 152,508