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Revenue from Contracts with Customers (Tables) | 9 Months Ended
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Sep. 30, 2020
Revenue from Contract with Customer [Abstract] |
Schedule of disaggregation of revenue | Revenue and operating expenses (excluding depreciation and amortization) disaggregated by revenue source are as follows (in thousands):
| Three months ended September 30, |  | Nine months ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Revenue: |  |  |  |  |  |  |
Products | $ | 12,076 |  |  | $ | 21,031 |  |  | $ | 39,053 |  |  | $ | 96,733 |
Services | 663 |  |  | 848 |  |  | 1,982 |  |  | 3,094 |
| $ | 12,739 |  |  | $ | 21,879 |  |  | $ | 41,035 |  |  | $ | 99,827 |
Operating expenses (excluding depreciation and amortization): |  |  |  |  |  |
Products | $ | 29,041 |  |  | $ | 23,542 |  |  | $ | 62,866 |  |  | $ | 105,078 |
Services | 425 |  |  | 80 |  |  | 1,073 |  |  | 633 |
| $ | 29,466 |  |  | $ | 23,622 |  |  | $ | 63,939 |  |  | $ | 105,711 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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