Note 11 - Equity Offerings (Details Textual) $ / shares in Units, $ in Thousands					9 Months Ended		12 Months Ended
	May 12, 2025 USD ($) $ / shares shares	Oct. 25, 2024 USD ($) $ / shares shares	Sep. 03, 2024 USD ($) $ / shares shares	Aug. 30, 2024 shares	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) $ / shares shares	Aug. 15, 2025 $ / shares	Aug. 07, 2025 USD ($)	Jun. 13, 2025 USD ($)	May 19, 2025 USD ($) $ / shares
Class of Warrant or Right, Exercised in Period (in shares)					162,947
Deemed Dividend on Warrant Inducement Offer | $		$ 5,200
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares					$ 0.0001		$ 0.0001
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares					$ 0.0001		$ 0.0001	$ 0.0001
Proceeds from Issuance of Common Stock | $					$ 3,744	$ 0
Accrued Liabilities, Current | $					$ 1,563		$ 1,548
Weighted Average [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares					$ 22.65
Common Stock Units [Member] | Underwriting Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)				24,138
Abeyance Shares [Member]
Stock Issued During Period, Shares, Other (in shares)					162,947
Common Stock, Capital Shares Reserved for Future Issuance (in shares)					0
Series B Convertible Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares	$ 0.0001
September 2024 Pre-Funded Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			145,943
September 2024 Pre-Funded Warrants [Member] | Pre-Funded Units [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)			1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 0.0019
Units Issued, Warrants Per Unit			1
Series H Warrants [Member]
Class of Warrant or Right, Exercised in Period (in shares)		104,737
Series H Warrants [Member] | Underwriting Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)				24,138
Class of Warrant or Right, Maximum Additional for Option (in shares)			24,634
Series H Warrants [Member] | Common Stock Units [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)			1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 19
Warrants and Rights Outstanding, Term (Month)			6 months
Series H Warrants [Member] | Pre-Funded Units [Member]
Units Issued, Warrants Per Unit			1
Series I Warrants [Member]
Class of Warrant or Right, Exercised in Period (in shares)		122,368
Series I Warrants [Member] | Underwriting Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)				24,138
Class of Warrant or Right, Maximum Additional for Option (in shares)			24,634
Series I Warrants [Member] | Common Stock Units [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)			1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 19
Warrants and Rights Outstanding, Term (Month)			18 months
Series I Warrants [Member] | Pre-Funded Units [Member]
Units Issued, Warrants Per Unit			1
Series J Warrants [Member] | Underwriting Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)				24,138
Class of Warrant or Right, Maximum Additional for Option (in shares)			24,634
Series J Warrants [Member] | Common Stock Units [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)			1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 19
Warrants and Rights Outstanding, Term (Month)			5 years
Series J Warrants [Member] | Pre-Funded Units [Member]
Units Issued, Warrants Per Unit			1
September 2024 Representative Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			11,302
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)			1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 29.45		$ 29.45
Warrants and Rights Outstanding, Term (Month)			5 years
Class of Warrant or Right, Percentage of Outstanding Stock			6.00%
Maximum Beneficial Ownership			4.99%
Maximum Beneficial Ownership, With Notice			9.99%
Class of Warrant or Right, Exercisable Period (Month)			6 months
Class of Warrant or Right, Exercised in Period (in shares)							145,943
Series Warrants [Member]
Maximum Beneficial Ownership			4.99%
Maximum Beneficial Ownership, With Notice			9.99%
Maximum Beneficial Ownership, Sixty One Days Notice			19.99%
Prefunded Warrants [Member]
Maximum Beneficial Ownership, With Notice			9.99%
Existing Warrants [Member]
Stock Issued During Period, Shares, Warrant Exercises (in shares)		281,470
Class of Warrant or Right, Exercised During Period, Exercise Price (in dollars per share) | $ / shares		$ 13.3
Proceeds from Warrant Exercises | $		$ 3,700
Payments of Costs Related to Exercise of Warrants | $		$ 400
Existing Warrants [Member] | Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares		$ 19
Existing Warrants [Member] | Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares		$ 760
Series E Warrants [Member]
Class of Warrant or Right, Exercised in Period (in shares)		1,745
Series F Warrants [Member]
Class of Warrant or Right, Exercised in Period (in shares)		26,311
Series G Warrants [Member]
Class of Warrant or Right, Exercised in Period (in shares)		26,311
Series K Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		562,945
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares		$ 13.3
Warrants and Rights Outstanding, Term (Month)		5 years 6 months
The 2024 Placement Agent Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		16,888
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares		$ 20.62
October 2024 Placement Warrants [Member]
Class of Warrant or Right, Exercisable Period (Month)		6 months
Series L Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares					$ 9.5
September 2024 Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)			42,415
Proceeds from Issuance Initial Public Offering | $			$ 3,600
Payments of Stock Issuance Costs | $			1,000
Proceeds From Issuance or Sale of Equity, Net | $			$ 2,600
Proceeds from Issuance of Common Stock | $					$ 0	$ 2,612
September 2024 Public Offering [Member] | Common Stock Units [Member]
Units Issued, Shares Per Unit			1
September 2024 Public Offering [Member] | Common Stock Units [Member]
Class of Unit, Price per Unit (in dollars per share) | $ / shares			$ 19
September 2024 Public Offering [Member] | Pre-Funded Units [Member]
Class of Unit, Price per Unit (in dollars per share) | $ / shares			$ 18.9981
Over-Allotment Option [Member] | Underwriting Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)				24,138
Option, Period (Day)			45 days
Option, Maximum Additional Shares (in shares)			24,634
Over-Allotment Option [Member] | Common Stock Units [Member] | Underwriting Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)				42,415
May 2025 PIPE Financing [Member]
Payments of Stock Issuance Costs | $	$ 400
Maximum Beneficial Ownership	4.99%
Maximum Beneficial Ownership, With Notice	9.99%
Proceeds from Issuance or Sale of Equity | $	$ 1,500
Warrant, Exercisable Minimum Share Price (in dollars per share) | $ / shares	$ 28.5
Failure to Register Penalty, Percentage of Subscription Amount Every Thirty Days	2.00%
Failure to Register Penalty, Interest on Unpaid Amount	18.00%
May 2025 PIPE Financing [Member] | QHS Lab Note [Member]
Debt Instrument, Fair Value Disclosure | $	$ 864
May 2025 PIPE Financing [Member] | PIPE Units [Member]
Stock Issued During Period, Shares, New Issues (in shares)	1,500
May 2025 PIPE Financing [Member] | Series B Convertible Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)	1,500
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	150
Units Issued, Shares Per Unit	1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares	$ 9.5
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares	$ 0.0001
May 2025 PIPE Financing [Member] | Series L Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	150
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)	1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares	$ 9.5
Warrants and Rights Outstanding, Term (Month)	5 years 6 months
Class of Warrant or Right, Callable, Price Per Share (in dollars per share) | $ / shares	$ 0.19
May 2025 PIPE Financing [Member] | Placement Agent Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	13,534
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares	$ 10.3075
Warrants and Rights Outstanding, Term (Month)	5 years
ATM Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)					868,582
Payments of Stock Issuance Costs | $					$ 300
Equity, Issuable, Maximum Issuance Value | $									$ 4,300	$ 3,200	$ 1,300
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares											$ 0.0001
Commission Fee, Percent of Gross Proceeds										3.00%
Proceeds from Issuance of Common Stock | $					4,000
The 2022 Offering [Member]
Accrued Liabilities, Current | $					$ 1,400		$ 1,400