Annual report pursuant to Section 13 and 15(d)

Acquisitions (Schedule of Assets Acquired And Liabilities Assumed, 401kplans.com) (Details)

v3.22.4
Acquisitions (Schedule of Assets Acquired And Liabilities Assumed, 401kplans.com) (Details) - USD ($)
$ in Thousands
7 Months Ended
Dec. 31, 2022
May 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Business Acquisition [Line Items]        
Goodwill $ 998,414   $ 925,154 $ 906,773
401kplans.com acquisition        
Business Acquisition [Line Items]        
Tangible net assets acquired, net of acquired cash 104 $ 94    
Tangible assets acquired, net of cash, Measurement Period Adjustments 10      
Identifiable intangible assets 3,000 3,000    
Goodwill 11,396 11,378    
Goodwill, Measurement Period Adjustments 18      
Total net assets acquired, net of cash received 14,500 $ 14,472    
Total net assets acquired, Measurement Period Adjustments $ 28