Number Of Preferred Stock Shares Exercised.

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- Definition

Preferred Stock [Abstract]

+ References

No definition available.

+ Details

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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+ Details

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- Definition

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

+ References

+ Details

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Stockholders' Equity - Preferred Stock (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Aug. 06, 2019	Aug. 05, 2019	Mar. 31, 2019	Dec. 31, 2018
Preferred Stock [Abstract]
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000	5,000,000	5,000,000	5,000,000
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001			$ 0.001
Preferred stock, shares outstanding (in shares)	1,959	1,959
Preferred stock, shares outstanding (in shares)	1,959	1,959
Series A Convertible Preferred Stock [Member]
Preferred Stock [Abstract]
Preferred stock, shares outstanding (in shares)	0	0
Convertible preferred stock	3.60%	3.60%
Preferred stock, shares outstanding (in shares)	0	0
Series B Convertible Preferred Stock [Member]
Preferred Stock [Abstract]
Preferred stock, shares outstanding (in shares)					1,021	1,021
Preferred stock, shares outstanding (in shares)					1,021	1,021
Series B Convertible Preferred Stock [Member] \| 2018 Rights Offering [Member]
Preferred Stock [Abstract]
Preferred stock, shares outstanding (in shares)	1,021
Preferred stock, shares outstanding (in shares)	1,021
Number of preferred stock, shares converted	6,133
Series C Convertible Preferred Stock [Member]
Preferred Stock [Abstract]
Preferred stock, shares outstanding (in shares)	938	938
Preferred stock, shares outstanding (in shares)	938	938
Series C Convertible Preferred Stock [Member] \| 2018 Rights Offering [Member]
Preferred Stock [Abstract]
Preferred stock, shares outstanding (in shares)	938
Preferred stock, shares outstanding (in shares)	938
Number of preferred stock, shares converted	291,920