Derivatives - Offsetting Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets
Derivative assets, gross amounts	$ 2,004	$ 114
Derivative assets, gross amounts offset	0	0
Derivative assets, amounts net of offset	2,004	114
Financial collateral (obligation to return cash)	0	0
Derivative assets, net amount	2,004	114
Current assets
Assets
Derivative assets, gross amounts	2,004	114
Derivative assets, gross amounts offset	0	0
Derivative assets, amounts net of offset	2,004	114
Financial collateral (obligation to return cash)	0	0
Derivative assets, net amount	$ 2,004	$ 114