Exchangeable Redeemable Preferred Stock Conversion (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended			12 Months Ended
	Nov. 23, 2020	Nov. 19, 2020	Nov. 30, 1998	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2006	Dec. 31, 1991	Dec. 31, 1990
Public Preferred Stock [Member]
Preferred stock [Abstract]
Preferred stock authorized (in shares)				6,000,000
Preferred stock par value (in dollars per share)				$ 0.01
Preferred stock, shares issued (in shares)								2,858,723
Preferred stock dividend rate per annum				12.00%			6.00%	6.00%
Preferred stock issued and outstanding (in shares)				3,185,586
12% Cumulative Exchangeable Redeemable Preferred Stock [Abstract]
Adjusted accrued accretion of public preferred stock						$ 1,500
Number of shares declared as dividend (in shares)							736,863	736,863
Preferred stock dividend rate per annum (in dollars per share)				$ 1.20			$ 0.60	$ 0.60
Preferred stock, liquidation preference (in dollars per share)				$ 10
Dividends on preferred stock					$ 1,000
Redemption of public preferred stock (in shares)			410,000
Exchangeable Redeemable Preferred Stock [Member]
Exchangeable Redeemable Preferred Stock [Abstract]
Liquidation value in cash transaction in condition 1				0.90
Liquidation value amount as per cash transaction in condition 2				0.85
Liquidation value in issuance of shares common stock in condition 1				0.90
Liquidation value in issuance of shares common stock in condition 2				0.15
Number of fractional shares (in shares)				0
Conversion per share amount (in dollars per share)		$ 10
Conversion amount		$ 142,300
Amount received in cash by stock	$ 108,900
Number of shares stock holder received (in shares)	1,100,000
Redemption price per share (in dollars per share)	$ 17
Amount received from converted shares	$ 19,200
Costs directly attributable to share redemption	220
Gain on extinguishment of debt	$ 14,000