Investments - Offsetting of Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Asset derivatives
Net Amounts of Assets/ Liabilities Presented in the Consolidated Balance Sheets	$ 16,805	$ 13,239
Free-standing derivatives
Asset derivatives
Gross Amounts	16,805	13,239
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts of Assets/ Liabilities Presented in the Consolidated Balance Sheets	16,805	13,239
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	13,671	7,687
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received	2,620	6,640
Net Amount	$ 514	$ (1,088)

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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