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Revenue from Contracts with Customers (Tables) | 3 Months Ended
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Mar. 31, 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 March 31,
| 2020 |  | 2019
Revenue: |  |  |
Products | $ | 18,800 |  |  | $ | 42,072 |
Services | 616 |  |  | 1,184 |
| $ | 19,416 |  |  | $ | 43,256 |
Operating expenses (excluding depreciation and amortization): |  |  |
Products | $ | 22,534 |  |  | $ | 43,447 |
Services | 307 |  |  | 521 |
| $ | 22,841 |  |  | $ | 43,968 |

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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=118956577&loc=SL49130545-203045 + Details
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