Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Additional Information (Details)

v3.19.3
Derivative Instruments and Hedging Activities - Additional Information (Details)
$ in Thousands
Sep. 30, 2019
contract
Dec. 31, 2018
contract
Jul. 01, 2018
USD ($)
Jan. 01, 2018
USD ($)
Derivative [Line Items]        
Cumulative impact from the adoption of ASU     $ (54)  
Accounting Standards Update 2017-12        
Derivative [Line Items]        
Cumulative impact from the adoption of ASU       $ (54)
Retained Earnings        
Derivative [Line Items]        
Cumulative impact from the adoption of ASU     0  
Retained Earnings | Accounting Standards Update 2017-12        
Derivative [Line Items]        
Cumulative impact from the adoption of ASU     0 $ 432
Accumulated Other Comprehensive Loss | Accounting Standards Update 2017-12        
Derivative [Line Items]        
Cumulative impact from the adoption of ASU     $ 486  
Not Designated        
Derivative [Line Items]        
Number of instruments held | contract 3 4