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Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2021
Dec. 31, 2020
Cash paid for acquisition of non-controlling interest $ 32.7    
Cash dividends declared, but not yet paid $ 6.5 $ 7.4 $ 6.3
Avinode Group AB      
Non-controlling interest 30.00%