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RELATED PARTY TRANSACTIONS | 3 Months Ended
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Mar. 31, 2020
RELATED PARTY TRANSACTIONS |
RELATED PARTY TRANSACTIONS | NOTE 20. RELATED PARTY TRANSACTIONS Members of our Board of Directors hold various executive positions and serve as directors at other companies, including companies that are our customers. During the three months ended March 31, 2020 and 2019, we engaged in the following transactions with companies related to members of our Board of Directors, as described below: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31, | ​
​ |  | 2020 |  | 2019 | ​
Sales to related parties | ​ | $ | — | ​ | $ | 352 | ​
Number of related party customers |  | ​ | 1 |  | ​ | 1 |
​ We did not have any accounts receivable balances from related party customers with outstanding balances as of March 31, 2020 and December 31, 2019. ​ We did not have any outstanding accounts payable with our related parties as of March 31, 2020 or December 31, 2019.

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -URI http://asc.fasb.org/topic&trid=2122745 + Details
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