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Summary of Significant Accounting Policies - Other (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Variable Interest Entity [Line Items]
Tax Benefits Recognized (in Percent)	50.00%
Assets	$ 10,905,000		$ 11,121,000
Potentially dilutive shares outstanding (in shares)	2,518,901	2,745,119
Minority Shareholder (Member)
Variable Interest Entity [Line Items]
Minority shareholder ownership interest percentage	1.00%
CHINA
Variable Interest Entity [Line Items]
Assets	$ 261,000		$ 103,000

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