Note 16 - Employee Benefit Plans (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay		6.00%
Defined Contribution Plan, Cost	$ 17,700	$ 19,100	$ 17,600
Multiemployer Plans, Maximum Percent Funded Status for Red Zone	65.00%
Multiemployer Plans, Maximum Percent Funded Status for Orange Zone	80.00%
Multiemployer Plans, Maximum Percent Funded Status for Yellow Zone	80.00%
Multiemployer Plans, Maximum Percent Funded Status for Green Zone	80.00%
Non-Qualified Deferred Compensation Plan [Member]
Deferred Compensation Liability, Current, Total	$ 23,100	32,700
Deferred Compensation Liability, Classified, Noncurrent, Total	3,700	$ 4,900
Deferred Profit Sharing [Member]
Defined Contribution Plan, Cost	$ 0		$ 0