Note 12 - Subsequent Events (Details Textual)	Aug. 12, 2024 $ / shares shares	Jul. 26, 2024 USD ($) $ / shares	Jul. 23, 2024 USD ($)	Jun. 30, 2024 USD ($) $ / shares shares	Dec. 31, 2023 $ / shares shares	Nov. 15, 2023 USD ($) $ / shares	Sep. 11, 2023 USD ($)	Sep. 30, 2022 USD ($)
Common Stock, Shares, Outstanding (in shares) | shares				671,060	671,060
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares				$ 0.0001	$ 0.0001
Summit Community Bank [Member] | Revolving Credit Facility [Member]
Long-Term Line of Credit				$ 300,000
Line of Credit Facility, Maximum Borrowing Capacity							$ 500,000	$ 1,000,000
Tellenger [Member]
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares						$ 1
Disposal Group, Including Discontinued Operation, Consideration						$ 1,500,000
Tellenger [Member] | Summit Community Bank [Member] | Revolving Credit Facility [Member]
Long-Term Line of Credit						300,000
Line of Credit Facility, Maximum Borrowing Capacity						$ 500,000
Merger Reverse Stock Split [Member]
Common Stock, Shares, Outstanding (in shares) | shares	671,060
Stockholders' Equity Note, Stock Split, Conversion Ratio	3
Subsequent Event [Member]
Payments for Advance to Affiliate			$ 75,000
Subsequent Event [Member] | Private Placement [Member]
Investment Owned, Net Assets, Percentage		4.99%
Proceeds from Issuance or Sale of Equity		$ 3,500,000
Subsequent Event [Member] | Private Placement [Member] | PIPE Share With Accompanying Warrant [Member]
Purchase Price Of Shares With Accompanying Warrants (in dollars per share) | $ / shares		$ 1.326
Subsequent Event [Member] | Private Placement [Member] | Pre-Funded Warrants [Member]
Purchase Price Of Shares With Accompanying Warrants (in dollars per share) | $ / shares		$ 1.3257
Subsequent Event [Member] | Merger Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	3
New Firefly Common Stock [Member] | Firefly [Member]
Common Stock, Shares, Outstanding (in shares) | shares	7,870,251
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares	$ 0.0001
New Firefly Common Stock [Member] | Firefly [Member] | Subsequent Event [Member]
Common Stock, Shares, Outstanding (in shares) | shares	7,870,251