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CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	9,234,110	6,246,896
Common stock, shares outstanding	9,234,110	6,246,896
6% Convertible Exchangeable Preferred Stock [Member]
Preferred stock, shares issued	335,273	335,273
Preferred stock, shares outstanding	335,273	335,273
Dividend rate on convertible exchangeable preferred stock (in percent)	6.00%	6.00%
Preferred stock, liquidation preference value (in dollars)	$ 4,006,512	$ 4,006,512
Series A Convertible Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares issued	264	264
Preferred stock, shares outstanding	264	264
Series B Convertible Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares issued	237,745	237,745
Preferred stock, shares outstanding	237,745	237,745

X

- Definition

Face amount or stated value per share of common stock.

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