Note 6 - Fair Value - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Cash and cash equivalents	[1]	$ 17,096	$ 6,329
Restricted cash		1,642	1,141
Short-term investments		3,971	64,195
Total assets measured at fair value		22,709	75,530
Long-term investments		0	3,865
Contingent consideration		2,220	1,256
Warrant liabilites		5,888	0
Total liabilities measured at fair value		8,108	1,256
Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	[1]	17,096	6,329
Restricted cash		1,642	1,141
Short-term investments		0	0
Total assets measured at fair value		18,738	7,470
Long-term investments			0
Contingent consideration		0	0
Warrant liabilites		0
Total liabilities measured at fair value		0	0
Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents	[1]	0	0
Restricted cash		0	0
Short-term investments		3,971	64,195
Total assets measured at fair value		3,971	68,060
Long-term investments			3,865
Contingent consideration		0	0
Warrant liabilites		0
Total liabilities measured at fair value		0	0
Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents	[1]	0	0
Restricted cash		0	0
Short-term investments		0	0
Total assets measured at fair value		0	0
Long-term investments			0
Contingent consideration		2,220	1,256
Warrant liabilites		5,888
Total liabilities measured at fair value		$ 8,108	$ 1,256

[1] Includes investments that are readily convertible to cash with original maturities of 90 days or less.