Other Derivatives - Liabilities subject to master netting arrangement (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair value	$ 4,306	$ 311
Gross amount of derivative liability	5,216	611
Net amounts of assets presented in the balance sheet	4,306	311
Net amounts of liabilities presented in the balance sheet	5,216	611
Gross amounts not offset in the balance sheet cash collateral	230	500
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	4,306	311
Gross amounts not offset in the balance sheet net amount	$ 4,986	$ 111

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