General and Summary of Significant Accounting Policies Future Estimated Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 23,563
Finite-Lived Intangible Assets, Amortization Expense, Year Two	22,747
Finite-Lived Intangible Assets, Amortization Expense, Year Three	21,724
Finite-Lived Intangible Assets, Amortization Expense, Year Four	21,635
Finite-Lived Intangible Assets, Amortization Expense, Year Five	17,095
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	71,104
Finite-Lived Intangible Assets, Net	$ 177,868	$ 197,417