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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Accounting Policies [Abstract] |  |
Schedule of disaggregated revenue | The following table presents the Company’s revenues disaggregated by type and percentage of total revenues for the periods indicated.
|  | Year Ended December 31,
|  | 2021 |  | 2020 |  | 2019
|  | Revenue |  | Percentage of Total Revenue |  | Revenue |  | Percentage of Total Revenue |  | Revenue |  | Percentage of Total Revenue
Sand sales revenue |  | $ | 117,402 |  |  | 93 | % |  | $ | 70,902 |  |  | 58 | % |  | $ | 109,621 |  |  | 47 | %
Shortfall revenue |  | 4,421 |  |  | 3 | % |  | 23,281 |  |  | 19 | % |  | 49,259 |  |  | 21 | %
Logistics revenue |  | 4,824 |  |  | 4 | % |  | 28,157 |  |  | 23 | % |  | 74,193 |  |  | 32 | %
Total revenues |  | $ | 126,647 |  |  | 100 | % |  | $ | 122,340 |  |  | 100 | % |  | $ | 233,073 |  |  | 100 | %
Schedule Of Useful Life Property Plant And Equipment | Depreciation is calculated using the straight-line method over the estimated useful lives of the property, plant and equipment, which are:
| Years
Land improvements | 10
Plant and buildings | 5-15
Real estate properties | 10-40
Railroad and sidings | 30
Vehicles | 3-5
Machinery, equipment and tooling | 3-15
SmartSystems | 5-15
Furniture and fixtures | 3-10
Deferred mining costs | 3
Reconciliation of weighted-average common shares outstanding used in the calculation of basic and diluted net income (loss) per share | The following table reconciles the weighted-average common shares outstanding used in the calculation of basic net income per share to the weighted average common shares outstanding used in the calculation of diluted net income per share:
| Year Ended December 31,
| 2021 |  | 2020 |  | 2019
Weighted average common shares outstanding | 41,775 |  |  | 40,260 |  |  | 40,135 |
Assumed conversion of restricted stock | — |  |  | — |  |  | 202 |
Diluted weighted average common stock outstanding | 41,775 |  |  | 40,260 |  |  | 40,337 |
Schedule of finite-lived intangible assets | Acquired finite-lived intangible assets are amortized on a straight-line basis over the following periods:
|  | Estimated Useful Life (Years)
Developed technology |  | 13
The following table reflects the changes in the net carrying amounts of the Company’s intangible assets for the year ended December 31, 2021.
|  | Balance at December 31, 2020 |  | Assets Acquired Pursuant to Business Combination |  | Impairment Charges |  | Amortization Expense |  | Balance at December 31, 2021
Developed technology |  | $ | 8,253 |  |  | $ | — |  |  | $ | — |  |  | $ | 792 |  |  | $ | 7,461 |
|  | $ | 8,253 |  |  | $ | — |  |  | $ | — |  |  | $ | 792 |  |  | $ | 7,461 |
| The following table reflects the changes in the net carrying amounts of the Company’s finite-lived intangible assets for the year ended December 31, 2020.
|  | Balance at December 31, 2019 |  | Assets Acquired Pursuant to Business Combination |  | Impairment Charges |  | Amortization Expense |  | Balance at December 31, 2020
Developed technology |  | $ | 9,046 |  |  | $ | — |  |  | $ | — |  |  | $ | 793 |  |  | $ | 8,253 |
|  | $ | 9,046 |  |  | $ | — |  |  | $ | — |  |  | $ | 793 |  |  | $ | 8,253 |
The following table reflects the carrying amounts of the Company's finite-lived intangible assets at December 31, 2021 and 2020.
|  | December 31, 2021 |  | December 31, 2020
|  | Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization
Developed technology |  | $ | 10,300 |  |  | $ | (2,839) |  |  | $ | 10,300 |  |  | (2,047) |
|  | $ | 10,300 |  |  | $ | (2,839) |  |  | $ | 10,300 |  |  | $ | (2,047) |

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