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Concentrations of Credit Risk and Current Expected Credit Losses (Tables)
12 Months Ended
Dec. 31, 2020
Concentrations of Credit Risk and Current Expected Credit Losses  
Schedule of concentration of credit risk related to specialty pharmacy customers

Percentage of Total Net

Product Revenues for the

Years Ended,

December 31,

 

2020

2019

2018

Customer A

20

%  

20

%  

20

%

Customer B

13

%  

13

%  

14

%

Customer C

17

%  

16

%  

15

%

Customer D

11

%  

11

%  

11

%