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Related Party Transactions | 3 Months Ended | 12 Months Ended
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Mar. 31, 2020 | Dec. 31, 2019
Related Party Transactions [Abstract] |  |
Related Party Transactions | 12. RELATED PARTY TRANSACTIONS The Company leases a portion of its corporate headquarters in San Diego, California to entities 100% owned by the Company’s Chairman and Chief Executive Officer. Rental income recorded for the three months ended March 31, 2020 and 2019 totaled $2,700 and $1,000, respectively. | 13. RELATED PARTY TRANSACTIONS During the year ended December 31, 2019, the Company leased a portion of its corporate headquarters in San Diego, California to an entity 100% owned by the Company’s Chairman and Chief Executive Officer . Total rents charged and paid by this affiliate was approximately $9,000 and $36,000 for the years ended December 31, 2019 and 2018, respectively.

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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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