Note N - Restructuring Activities (Details Textual) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 ft²
Restructuring and Related Cost, Expected Cost, Total	$ 0		$ 27,600
Restructuring Costs, Total	$ 0	$ 304
Facility Closing [Member]
Restructuring Costs, Total		2,200
Employee Severance [Member]
Restructuring Costs, Total		200
Lease Impairment and Termination Charges [Member]
Restructuring Costs, Total		300
Facility Related and Other Expenses [Member]
Restructuring Costs, Total		$ 1,700
Facility in Kansas City [Member]
Area of Real Estate Property (Square Foot) | ft²				400,000