Condensed Consolidated Statements of Comprehensive Income (Unuaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 98,227	$ 270,857	$ 392,355	$ 474,700
Available for sale securities:
Change in net unrealized gains	14	57	145	2,859
Less: reclassification adjustment for net losses (gains) included in net income	1	7	(20)	(577)
Net change (net of tax effect)	15	64	125	2,282
Gain on pension liability	0	0	8	0
Cash flow hedges:
Change in unrealized gains (losses)	1,733	(1,774)	(394)	(1,439)
Less: reclassification adjustment for net losses (gains) included in net income	390	(162)	1,061	829
Net change (net of tax effect)	2,123	(1,936)	667	(610)
Other comprehensive income (loss)	2,138	(1,872)	800	1,672
Comprehensive income	$ 100,365	$ 268,985	$ 393,155	$ 476,372