Note N - Restructuring Activities (Details Textual) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 ft²
Restructuring and Related Cost, Expected Cost, Total		$ 0		$ 27,600
Restructuring Costs, Total		$ 0	$ 309
Facility Closing [Member]
Restructuring Costs, Total	$ 1,700		3,900
Employee Severance [Member]
Restructuring Costs, Total	1,200		1,400
Facility Related and Other Expenses [Member]
Restructuring Costs, Total	$ 500		2,200
Lease Impairment [Member]
Restructuring Costs, Total			$ 300
Facility in Kansas City [Member]
Area of Real Estate Property (Square Foot) | ft²					400,000