Condensed Consolidated Statements of Equity (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Convertible debt extinguishment impact, tax impact	$ 318	$ 1,055	$ 1,013
Treasury Stock | Restricted stock units
Conversion or settlement to common stock, net of treasury shares purchased (in shares)	30,624	86,701	25,134	1,775	805	138,012
Treasury Stock | Stock appreciation rights
Conversion or settlement to common stock, net of treasury shares purchased (in shares)	7,095	21,794	14,438	1,042	2,274	9,888