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Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue Recognition [Abstract] |
Disaggregation of revenue |
|  | Year ended December 31, 2020 |
|  | Services Revenues |  |  | Products Revenue |  |  | Total Revenue |
Timing of revenue recognition: |  |  |  |  |  |  |  |  |
Products and services transferred over time |  | $ | 10,670,000 |  |  | $ | - |  |  | $ | 10,670,000 |
Products and services transferred at a point in time |  |  | 6,234,000 |  |  |  | 578,000 |  |  |  | 6,812,000 |
Total |  | $ | 16,904,000 |  |  | $ | 578,000 |  |  | $ | 17,482,000 |
|  | Year ended December 31, 2019 |
|  | Services Revenues |  |  | Products Revenue |  |  | Total Revenue |
Timing of revenue recognition: |  |  |  |  |  |  |  |  |
Products and services transferred over time |  | $ | 15,029,000 |  |  | $ | - |  |  | $ | 15,029,000 |
Products and services transferred at a point in time |  |  | 4,774,000 |  |  |  | 1,725,000 |  |  |  | 6,499,000 |
Total |  | $ | 19,803,000 |  |  | $ | 1,725,000 |  |  | $ | 21,528,000 |
Deferred revenue |
Balance at December 31, 2019 |  | $ | 140,000 |
Reclassification of beginning deferred revenue to revenue, as a result of performance obligations satisfied |  |  | (140,000 | )
Cash received in advance and not recognized as revenue |  |  | 180,000 |
Balance at December 31, 2020 |  | $ | 180,000 |

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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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