Employee Benefit Plans - Funded Status of Pension Plan (Details) - Pension Plans - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amounts recognized in the Consolidated Balance Sheets
Noncurrent asset	$ 72,320	$ 51,133
Current liability	(3,863)	(3,754)
Noncurrent liability	(413,829)	(456,979)
Net amount recognized	(345,372)	(409,600)
Amounts recognized in accumulated other comprehensive loss (pre-tax)
Prior service cost	13,798	14,519
Net actuarial loss	869,907	929,995
Net amount recognized	$ 883,705	$ 944,514

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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