Note 11 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Employee and Severance Agreement, Maximum Aggregate Exposure	$ 1,100
Employee and Severance Agreement, Maximum Aggregate Exposure, Shares (in shares)	250,000
Long-term Incentive Plan, Payments		$ 2,500
Deferred Compensation Liability, Current and Noncurrent, Total	$ 0
Amended and Restated Safeguard Scientifics Transaction Bonus Plan [Member]
Compensation, Cash Award	$ 0	$ 700
Minimum [Member]
Long-term Incentive Plan, Bonus Pool Percent	0.20%	1.00%
Maximum [Member]
Long-term Incentive Plan, Bonus Pool Percent	1.30%
Private Equity Funds [Member]
Guarantor Obligations, Current Carrying Value	$ 3,800