Note 9 - Third-party Long-term Debt (Details Textual) $ in Thousands		1 Months Ended			3 Months Ended		6 Months Ended		12 Months Ended
		Oct. 31, 2021	May 31, 2021 USD ($)	Aug. 31, 2020	Jun. 30, 2025 USD ($) a	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) a	Jun. 30, 2024 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 USD ($)	Jan. 01, 2023 USD ($)
Restricted Cash, Current					$ 1,000		$ 1,000			$ 1,000
Amortization of Debt Issuance Costs							102	$ 101
Small Business Administration SBA [Member] | BDEC Term Loan Due 2051 [Member]
Debt Instrument, Face Amount											$ 2,000
Veritex Community Bank [Member] | LE Term Loan Due 2034 [Member]
Debt Instrument, Face Amount											$ 25,000
Nonrelated Party [Member]
Amortization of Debt Issuance Costs					100	$ 100	100	$ 100
Nonrelated Party [Member] | Greater Nevada Credit Union (GNCU) [Member] | NPS Term Loan Due 2031 [Member]
Debt Instrument, Period of Interest Only Payments (Month)		36 months
Debt Instrument, Face Amount	[1]				$ 10,000		$ 10,000
Area of Land (Acre) | a					56		56
Nonrelated Party [Member] | Small Business Administration SBA [Member]
Debt Instrument, Payment Deferral Period (Month)				30 months
Nonrelated Party [Member] | Small Business Administration SBA [Member] | BDEC Term Loan Due 2051 [Member]
Debt Instrument, Face Amount			$ 500
Proceeds from Issuance of Debt									$ 1,500
Debt Instrument, Payment Deferral Period (Month)			30 months
Nonrelated Party [Member] | Veritex Community Bank [Member] | LE Term Loan Due 2034 [Member]
Debt Instrument, Face Amount	[2]				$ 25,000		$ 25,000
Debt Instrument, Collateral Amount					5,000		5,000
Escrow Deposit					1,000		1,000
Nonrelated Party [Member] | Veritex Community Bank [Member]
Restricted Cash Noncurrent, Minimum Required Amount					1,000		1,000
Restricted Cash, Current					$ 1,000		$ 1,000			$ 1,000

[1] Loan requires monthly interest-only payments for the first thirty-six (36) months. Afterwards, principal and interest payments are due monthly through loan maturity. First principal payment commenced in November 2024. As of June 30, 2025 and the filing date of this report, the NPS Term Loan Due 2031 was in default due to non-financial covenant violations.

[2] Our secured loan agreements with Veritex are subject to certain financial and non-financial covenants. As of June 30, 2025, LE and LRM were in default related to financial covenants under the LE Term Loan Due 2034 and LRM Term Loan Due 2034. With respect to non-financial covenants, we are required to have a balance of $1.0 million in a payment reserve account held by Veritex. At June 30, 2025 and December 31, 2024 restricted cash totaled $1.0 million.