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Summary of Significant Accounting Policies - Other (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Variable Interest Entity [Line Items] |  |
Tax Benefits Recognized Description | The tax benefits recognized in the consolidated financial statements from such a position are measured based on the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate resolution. |
Funds Received | $ 40,000 | $ 108,000
Additional Funds Received | $ 50,000 |
Weighted Average Number of Shares Outstanding, Diluted | 2,777,119 | 2,211,058
Assets | $ 11,121,000 | $ 10,942,000
CHINA |  |
Variable Interest Entity [Line Items] |  |
Assets | $ 103,000 | $ 151,000

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