Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Effects on Statements of Income (Loss) and Consolidated Statements of Comprehensive Loss (Details)

v3.19.1
Derivative Instruments and Hedging Activities - Effects on Statements of Income (Loss) and Consolidated Statements of Comprehensive Loss (Details) - Other expenses, net - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Designated | Interest rate swap instruments    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain Recognized in Net Income $ (49) $ (102)
Not Designated | Interest rate swap instruments    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain Recognized in Net Income 0 0
Not Designated | Commodity swap contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain Recognized in Net Income 0 0
Not Designated | Interest make-whole provisions    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain Recognized in Net Income $ (723) $ 0