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Related Parties
6 Months Ended
Jun. 30, 2020
Related Party Transactions [Abstract]  
Related Parties Related PartiesThe Company purchases some supplies from an entity controlled by the Company’s Executive Chairman. The Company sometimes makes sales to the Executive Chairman for parts. Additionally, the Company sells units to an entity owned by a member of the CEO's immediate family. This entity is also one of the Company’s Representatives and as such, the Company makes payments to the entity for third party products.  All related party transactions are made on standard Company terms.
The following is a summary of transactions and balance with affiliates:

 Three Months EndedSix Months Ended
 June 30,
2020
June 30,
2019
June 30,
2020
June 30,
2019
(in thousands)
Sales to affiliates$1,235  $318  $1,888  $368  
Payments to affiliates38  66  97  193  
June 30,
2020
December 31,
2019
(in thousands)
Due from affiliates$189  $22  
Due to affiliates34