Note 11 - Madryn Long-term Debt and Convertible Notes (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Oct. 04, 2023	Dec. 09, 2020	Mar. 31, 2024	Mar. 31, 2023
Interest Expense, Debt			$ 2,077	$ 1,443
Series X Convertible Preferred Stock [Member][
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.0001
Shares Issued, Price Per Share (in dollars per share)	$ 20.1
Madryn Noteholders [Member] | Conversion from Madryn Noteholders, Outstanding Debt Converted to Convertible Instruments [Member] | Series X Convertible Preferred Stock [Member][
Debt Conversion, Original Debt, Amount	$ 26,695
Debt Conversion, Converted Instrument, Amount	$ 22,792
Convertible Preferred Stock, Shares Issued upon Conversion (in shares)	248,755
Gain (Loss) on Extinguishment of Debt	$ (2,000)
Madryn Credit Agreement [Member]
Repayments of Debt		$ 42,500
Secured Subordinated Convertible Notes [Member] | Madryn Noteholders [Member]
Debt Instrument, Face Amount		$ 26,700
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 8.5
Debt Instrument, Default, Increase in Interest Rate	4.00%
Long-Term Debt, Gross			24,400
Interest Expense, Debt			834	$ 540
Repayments of Long-Term Debt			$ 0
Debt Instrument, Maturity Date	Dec. 09, 2025