Business and Basis of Presentation (Details) - USD ($) $ in Thousands			3 Months Ended
	Apr. 03, 2020	Jan. 01, 2020	Mar. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Idled operation term	30 days
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201613Member
Stockholder's equity			$ 653,835	$ 342,968	$ 409,415	$ 696,122	$ 868,938	$ 967,221	$ 1,080,644	$ 1,071,140
Retained (Deficit) Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholder's equity			$ 46,562	$ (260,376)	$ (191,739)	86,810	$ 227,751	$ 296,283	$ 409,944	$ 403,129
Cumulative effect
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholder's equity						(440)
Cumulative effect | Retained (Deficit) Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholder's equity		$ (440)				$ (440)