Goodwill and Other intangible assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Addition to goodwill for acquisition of Century		$ 53,291
Goodwill	$ 99,490	99,490	$ 46,199
Tax exempt portion of goodwill	42,600	42,600
Other intangible assets, net	23,600	23,600
Amortization of Intangible Assets	$ 800	$ 800
Minimum
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, amortized estimated useful lives (in years)		7 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, amortized estimated useful lives (in years)		20 years