CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Accounts receivable, allowance	$ 4,936	$ 4,324
Preferred stock par value	$ 1.00	$ 1.00
Preferred stock shares authorized	1,000,000	1,000,000
Preferred stock shares issued	0	0
Preferred stock shares outstanding	0	0
Common stock par value	$ 0.66	$ 0.66
Common stock shares authorized	70,000,000	70,000,000
Common stock shares issued	45,288,669	45,017,774
Common stock shares outstanding	45,288,669	45,017,774
Treasury stock, shares	9,272,513	9,272,513