Note 1 - Condensed Consolidated Financial Statement Presentation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended		8 Months Ended	13 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Aug. 31, 2019	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2012
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01			$ 0.01	$ 0.01		$ 0.01
Net Income (Loss) Attributable to Parent, Total	$ (1,380)	$ (1,314)
Net Cash Provided by (Used in) Operating Activities, Total	(329)	(432)
Stockholders' Equity Attributable to Parent, Ending Balance	(82,435)	$ (73,339)		$ (82,435)	$ (81,090)	$ (72,059)
Cash and Cash Equivalents, at Carrying Value, Ending Balance	1,011			1,011	1,340
Liabilities, Total	$ 93,907			$ 93,907	$ 93,266
Workforce Reduction Due to Impact of COVID-19, Percent				8.00%
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	3.1	4.5
Senior Notes [Member] | The 2017 Notes [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate			3.50%
NovaStar Mortgage LLC [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance	$ 300			$ 300