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Summary of Significant Accounting Policies Inventory (Details) - USD ($) | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Inventory [Line Items] |  |
Inventory, Raw Materials, Gross | $ 2,218,000 | $ 3,182,000
Inventory, Work in Process, Gross | 1,117,000 | 153,000
Inventory, Finished Goods, Net of Reserves | 812,000 |
Inventory, Finished Goods, Gross |  | 908,000
Inventory, Gross | $ 4,147,000 | $ 4,243,000

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- Definition Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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