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Income Tax (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Income Tax (Details) [Line Items]
Tax rate	25.00%
Income tax, description	The US parent company, CREG is taxed in the US and, as of March 31, 2021, had net operating loss (“NOL”) carry forwards for income taxes of $1.48 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)	$ 43,740
Percentage of deferred tax valuation allowance	100.00%

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Percentage of deferred tax valuation allowance.

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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
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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