Investments - Offsetting of Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Asset derivatives
Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets	$ 13,240	$ 2,647
Free-standing derivatives
Asset derivatives
Gross Amounts	13,239	2,647
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets	13,239	2,647
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	7,687	0
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received	6,640	1,868
Derivative Asset, Fair Value, Amount Offset Against Collateral	$ (1,088)	$ 779

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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