Note 11 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
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	$ 700	$ 1,300
Minimum [Member]
Long-term Incentive Plan, Bonus Pool Percent	0.20%	1.00%
Maximum [Member]
Long-term Incentive Plan, Bonus Pool Percent	1.30%
Employee Severance [Member]
Restructuring and Related Cost, Expected Cost, Total	$ 1,000
Private Equity Funds [Member]
Guarantor Obligations, Current Carrying Value	$ 3,800