Note 3 - Subordinated Notes Receivable - Reconciliation of the Activity (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2020	Dec. 31, 2019
Impairment		$ (833,000)	$ (897,000)
Interest paid-in-kind		(25,000)
Second A&R Note [Member]
Principal		2,564,000	3,376,000
Discount, balance		(1,855,000)	(1,012,000)
Balance		709,000	2,364,000
Principal payments, principal		(2,060,000)	(812,000)
Principal payments		(2,060,000)	(812,000)
Impairment, principal
Impairment, discount			(897,000)
Impairment	$ (897,000)		(897,000)
Accretion of discount, discount			54,000
Accretion of discount			54,000
Interest paid-in-kind, principal		25,000
Interest paid-in-kind		25,000
Gain on settlement of debt, principal		(529,000)
Gain on settlement of debt, discount		1,855,000
Gain on settlement of debt		1,326,000
Principal			2,564,000
Discount, balance			(1,855,000)
Balance	$ 1,300,000		709,000
Accretion of discount, discount			54,000
Accretion of discount			54,000
S&L Subordinated Notes Receivable [Member]
Principal		3,329,000	4,340,000
Discount, balance		(659,000)	(822,000)
Balance		2,670,000	3,518,000
Principal payments, principal		(58,000)	(1,011,000)
Principal payments		(58,000)	(1,011,000)
Impairment, discount		(833,000)
Impairment		(833,000)
Accretion of discount, discount		104,000	163,000
Accretion of discount		104,000	163,000
Principal		3,271,000	3,329,000
Discount, balance		(1,388,000)	(659,000)
Balance		1,883,000	2,670,000
Accretion of discount, discount		104,000	163,000
Accretion of discount		$ 104,000	$ 163,000