Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 48,424	$ 115,881
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	205	160
Total other comprehensive loss	205	160
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	48,629	116,041
Net income attributable to noncontrolling interests	0	(87)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 48,629	$ 115,954