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Company and Summary of Significant Accounting Policies - Advertising Costs (Details) - USD ($) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Selling and Marketing Expense [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Advertising costs | $ 512,000 | $ 78,000 | $ 954,000 | $ 246,000

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- Definition Significant Account Policies [Line Items] + References No definition available. + Details
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Details
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