Acquisitions - Assets acquired and liabilities assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Apr. 18, 2023	Dec. 31, 2022	Dec. 23, 2022
Business Acquisition [Line Items]
Goodwill	$ 54,633		$ 45,514
NextSphere
Business Acquisition [Line Items]
Current assets		$ 9,708
Property, plant and equipment		192
Intangible assets	9,906	9,906
Goodwill		9,119
Other noncurrent assets		511
Total assets acquired		29,436
Accounts payable, accrued expenses and other liabilities		(1,990)
Deferred taxes		(2,235)
Total liabilities assumed		(4,225)
Purchase price allocation		25,211
Cash and cash equivalents		$ 6,400
Mutual Mobile
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, accrued expenses and other liabilities				(1,576)
Deferred taxes				(875)
Total liabilities assumed				(2,451)
Purchase price allocation				16,070
Cash and cash equivalents				$ 3,500