Acquisitions - Assets acquired and liabilities assumed (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Dec. 23, 2022	May 29, 2021
Business Acquisition [Line Items]
Goodwill	$ 45,514	$ 45,514
Tacit Knowledge Inc.
Business Acquisition [Line Items]
Current assets				$ 9,145
Property, plant and equipment				466
Intangible assets	12,913			12,913
Goodwill				21,268
Other noncurrent assets				0
Total assets acquired				43,792
Accounts payable and accrued expenses				(3,675)
Deferred taxes				(2,500)
Total liabilities assumed				(6,175)
Purchase price allocation				37,617
Cash and cash equivalents				$ 3,000
Mutual Mobile Inc.
Business Acquisition [Line Items]
Current assets			$ 4,982
Property, plant and equipment			132
Intangible assets	3,749		3,749
Goodwill			9,556
Other noncurrent assets			102
Total assets acquired			18,521
Accounts payable and accrued expenses			(1,576)
Deferred taxes			(875)
Total liabilities assumed			(2,451)
Purchase price allocation			$ 16,070
Cash and cash equivalents	$ 3,500