Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments and Hedging Activities - Derivatives Classified as Current or Noncurrent Based on Maturity Dates (Details)

v3.8.0.1
Derivative Financial Instruments and Hedging Activities - Derivatives Classified as Current or Noncurrent Based on Maturity Dates (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Oct. 01, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]      
Other current assets $ 23,387 $ 84,519 $ 66,231
Accrued liabilities (75,266) (18,574) (28,852)
Other assets 3,271 18,821 9,266
Other liabilities $ (13,946) $ (7,000) $ (3,329)