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Exercise price per share or per unit of warrants or rights outstanding.

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Number of warrants or rights outstanding.

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Face amount or stated value per share of common stock.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Direct costs arising from transactions with related parties who are not affiliates or joint Ventures. These costs are categorized as cost of goods sold.

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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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This element represents money paid in advance to protect the provider of a product or service, such as a lessor, against damage or nonpayment by the buyer or tenant (lessee) during the term of the agreement. Such damages may include physical damage to the property, theft of property, and other contractual breaches. Security deposits held may be interest or noninterest bearing.

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Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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Related Party Transactions (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 16, 2020	May 14, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Common stock, shares issued	25,149,000	25,149,000		25,149,000				20,825,000
Common stock, par value	$ 0.001	$ 0.001		$ 0.001				$ 0.001
Coverage period				1 year
Deposit for insurance	$ 30.0	$ 30.0		$ 30.0
Chairman, Robert W. Duggan [Member] \| Rights Offering [Member]
Related Party Transaction [Line Items]
Ownership percentage	47.00%	47.00%		47.00%				43.00%
Robert W. Duggan [Member]
Related Party Transaction [Line Items]
Due to related parties	$ 2.5	$ 2.5		$ 2.5
Legal Expenses [Member] \| Wilson Sonsini Goodrich And Rosati (WSGR) [Member]
Related Party Transaction [Line Items]
Related party expenses		0.4	$ 0.1	0.5	$ 0.2
Letter Agreement [Member] \| Robert W. Duggan [Member]
Related Party Transaction [Line Items]
Due to related parties	$ 0.3	$ 0.3		$ 0.3
Rights Offering [Member]
Related Party Transaction [Line Items]
Common stock, shares issued	4,279,000	4,279,000		4,279,000		4,279,600
Common stock, par value	$ 0.001	$ 0.001		$ 0.001
Warrants/rights outstanding	641,571	641,571		641,571		641,571
Exercise price of warrants/rights	$ 7.01	$ 7.01		$ 7.01		$ 7.01	$ 7.01
Value of warrants/rights	$ 29.5	$ 29.5		$ 29.5		$ 29.5	$ 30.0
Rights Offering [Member] \| Initial Public Offering [Member]
Related Party Transaction [Line Items]
Warrants/rights outstanding	121,609	121,609		121,609
Rights Offering [Member] \| Legal Expenses [Member]
Related Party Transaction [Line Items]
Related party expenses	$ 0.4
Rights Offering [Member] \| Common Stock
Related Party Transaction [Line Items]
Warrants/rights outstanding	641,571	641,571		641,571