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Transactions with Affiliates (Tables)
 6 Months Ended
Jun. 30, 2022
Related Party Transactions [Abstract]  
Activities with affiliates
Activities with affiliates were as follows for the periods indicated (in thousands):

Three Months EndedSix Months Ended
June 30,June 30,
2022202120222021
Affiliate billings to us$— $— $6 $12 
Billings to affiliates5 5 10 6 
Rentals paid to affiliate138 143 252 317