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Customer Lists, Net (Tables)
12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Customer Lists, Net
Distribution agreements, net, which are amortized on a straight-line basis and have an estimated useful life of 10 to 40 years, consisted of the following:

(in thousands)December 31, 2021December 31, 2020
Distribution agreements at cost$960,042 $952,533 
Less: Accumulated amortization123,265 98,780 
Distribution agreements, net$836,777 $853,753 
Customer lists, net, which are amortized on a straight-line basis and have an estimated useful life of five to 12 years, consisted of the following:

(in thousands)December 31, 2021December 31, 2020
Customer lists at cost$25,288 $25,288 
Less: Accumulated amortization14,322 12,484 
Customer lists, net$10,966 $12,804