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Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income tax rate	21.00%	21.00%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 0	$ 0	$ 1,310,000
Income tax provision included in expense	0	$ 0
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	238,537,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards	93,000
U.S. Federal [Member]
Operating Loss Carryforwards	150,285,000
Tax Credit Carryforwards	$ 2,016,000

X

- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
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-Section 50
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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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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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