Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Accounts Receivable, Allowance for Credit Loss	$ 14,590	$ 21,490
Convertible preferred stock, par value	$ 1.00
Convertible preferred stock, authorized shares	500,000
Convertible preferred stock, issued shares	0	0
Convertible preferred stock, outstanding shares	0	0
Common stock, par value	$ 0.10
Common stock, shares authorized	80,000,000
Common stock, shares issued	21,219,000	21,058,000
Common stock, shares outstanding	21,208,000	21,058,000
Treasury Stock, Shares	11,223	209