Income Taxes - Narrative (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Valuation Allowance [Line Items]
Valuation allowance	$ 86,000	$ 86,000
Expirations of capital loss carryforwards	400,000
Unrecognized tax benefits	0	$ 0	$ 0
Expired Capital Loss Carryforward
Valuation Allowance [Line Items]
Expirations of capital loss carryforwards	$ 0

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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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 unrecognized tax benefits.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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