Preferred Stock (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	May 28, 2020	Oct. 31, 2019	Oct. 25, 2019	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Mar. 30, 2020
Schedule of Capitalization, Equity [Line Items]
Common stock, par value				$ 0.01	$ 0.01
Shares authorized				9,090,909	9,090,909
Private Placement [Member]
Schedule of Capitalization, Equity [Line Items]
Aggregate offering price			$ 25
Series C Preferred Stock [Member]
Schedule of Capitalization, Equity [Line Items]
Issuance of preferred stock				0	0
Aggregate value
Shares issued upon conversion	12,607
Preferred stock, par value				$ 0.01	$ 0.01
Number of outstanding shares						12,607	12,337
Series C Preferred Stock [Member] | Private Placement [Member]
Schedule of Capitalization, Equity [Line Items]
Issuance of preferred stock		12,337
Purchase price per share		$ 1,200.00
Shares upon conversion							270
Preferred stock, par value		$ 0.01
Common Stock [Member]
Schedule of Capitalization, Equity [Line Items]
Number of shares exchange							27,000
Common Stock [Member] | Private Placement [Member]
Schedule of Capitalization, Equity [Line Items]
Shares sold		849,615
Purchase price per share		$ 12.00
Non-Voting Common Stock [Member]
Schedule of Capitalization, Equity [Line Items]
Shares issued upon conversion	1,260,700
Shares upon conversion	100
Common stock, par value				$ 0.01	$ 0.01
Shares authorized	1,260,700			1,260,700	1,260,700
Non-Voting Common Stock [Member] | Private Placement [Member]
Schedule of Capitalization, Equity [Line Items]
Shares upon conversion			100
Common stock, par value			$ 0.01