Goodwill and Other intangible assets - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Addition to goodwill for acquisition of Century	$ 53,291
Goodwill	99,490	$ 46,199
Tax exempt portion of goodwill	53,300
Other intangible assets	$ 24,400
Minimum
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, amortized estimated useful lives (in years)	8 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, amortized estimated useful lives (in years)	20 years