New Accounting Pronouncements (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2019	Jun. 30, 2020	Mar. 31, 2020	Jan. 01, 2020	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) in accounts receivable		$ 257,769	$ 186,144		$ 600
Stockholders' Equity Attributable to Parent		$ (1,383,717)	(1,333,186)	$ (1,392,708)		$ (1,483,328)	$ (1,486,806)	$ (1,503,738)
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201613Member
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity Attributable to Parent		$ 406,755	$ 457,804	$ 369,811	$ (600)	$ 295,643	$ 266,428	$ 251,579