Note 11 - Equity Offerings - Schedule of Warrants or Rights (Details) - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024	Sep. 03, 2024
Outstanding, Warrants (in shares)	1,033,447
Issued, Warrants (in shares)	239,097
Exercised, Warrants (in shares)	(162,947)
Expired, Warrants (in shares)	(30,654)
Outstanding, Warrants (in shares)	1,078,943	1,033,447
August 2021 Pharos Banker Warrants [Member]
Outstanding, Warrants (in shares)	7
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 28,405
Expiration Date, Warrants	Aug. 16, 2026
Expiration Date, Warrants	Aug. 16, 2026
February 2022 Series B Warrants [Member]
Outstanding, Warrants (in shares)	2,061
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 2,660
Expiration Date, Warrants	Feb. 04, 2029
Expiration Date, Warrants	Feb. 04, 2029
July 2022 Series C Warrants [Member]
Outstanding, Warrants (in shares)	1,495
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 2,660
Expiration Date, Warrants	Jul. 22, 2027
Expiration Date, Warrants	Jul. 22, 2027
September 2024 Series I Warrants [Member]
Outstanding, Warrants (in shares)	56,784
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 13.3
Expiration Date, Warrants	Mar. 03, 2026
Expiration Date, Warrants	Mar. 03, 2026
September 2024 Series J Warrants [Member]
Outstanding, Warrants (in shares)	188,363
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 19
Expiration Date, Warrants	Sep. 03, 2029
Expiration Date, Warrants	Sep. 03, 2029
September 2024 Representative Warrants [Member]
Exercised, Warrants (in shares)		(145,943)
Outstanding, Warrants (in shares)	11,302
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 29.45		$ 29.45
Expiration Date, Warrants	Aug. 29, 2029
Expiration Date, Warrants	Aug. 29, 2029
October 2024 Series K Warrants [Member]
Outstanding, Warrants (in shares)	562,945
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 13.3
Expiration Date, Warrants	Jul. 13, 2030
Expiration Date, Warrants	Jul. 13, 2030
May 2020 Placement Agent Warrants [Member]
Outstanding, Warrants (in shares)	16,888
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 20.62
Expiration Date, Warrants	Apr. 25, 2030
Expiration Date, Warrants	Apr. 25, 2030
Series L Warrants [Member]
Outstanding, Warrants (in shares)	225,564
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 9.5
Expiration Date, Warrants	Jan. 25, 2031
Expiration Date, Warrants	Jan. 25, 2031
August 2020 Placement Agent Warrants [Member]
Outstanding, Warrants (in shares)	13,534
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 10.31
Expiration Date, Warrants	Jun. 06, 2030
Expiration Date, Warrants	Jun. 06, 2030