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Income Tax (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax (Details) [Line Items] |  |  |  |
Tax rate | 25.00% | 25.00% | 25.00% | 2019.00%
Income tax, description |  | The US parent company, CREG is taxed in the US and, as of June 30, 2021, had net operating loss (“NOL”) carry forwards for income taxes of $2.54 million; for federal income tax purposes, the NOL arising in tax years beginning after 2017 may only reduce 80% of a taxpayer’s taxable income, and may be carried forward indefinitely. However, the coronavirus Aid, Relief and Economic Security Act (“the CARES Act”) issued in March 2020, provides tax relief to both corporate and noncorporate taxpayers by adding a five-year carryback period and temporarily repealing the 80% limitation for NOLs arising in 2018, 2019 and 2020. The management believes the realization of benefits from these losses may be uncertain due to the US parent company’s continuing operating losses. Accordingly, a 100% deferred tax asset valuation allowance was provided. | The US parent company, CREG is taxed in the US and, as of December 31, 2020, had net operating loss (“NOL”) carry forwards for income taxes of $1.21 million; for federal income tax purposes, the NOL arising in tax years beginning after 2017 may only reduce 80% of a taxpayer’s taxable income, and may be carried forward indefinitely. However, the coronavirus Aid, Relief and Economic Security Act (“the CARES Act”) issued in March 2020, provides tax relief to both corporate and noncorporate taxpayers by adding a five-year carryback period and temporarily repealing the 80% limitation for NOLs arising in 2018, 2019 and 2020. The management believes the realization of benefits from these losses may be uncertain due to the US parent company’s continuing operating losses. Accordingly, a 100% deferred tax asset valuation allowance was provided. |
PRC [Member] |  |  |  |
Income Tax (Details) [Line Items] |  |  |  |
Tax rate |  |  | 25.00% |
Net operating loss carry forwards (in Dollars) | $ 42,570 |  | $ 43,400 |
Percentage of deferred tax valuation allowance | 100.00% |  | 100.00% |

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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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