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Derivative Instruments and Hedge Activities - Summary of Company's Interest Rate Derivative and Offsetting Positions (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Derivative Instruments And Hedging Activities Disclosure [Abstract] |  |
Gross amounts recognized | $ 7,960 | $ 10,740
Net amount presented in the Consolidated Statements of Financial Condition | 7,960 | 10,740
Gross amounts not offset in the Consolidated Statements of Financial Condition |  |
Offsetting derivative positions | (1) | (2,823)
Collateral posted | (7,959) | (7,917)
Gross amounts recognized | 8,519 | 4,243
Net amount presented in the Consolidated Statements of Financial Condition | 8,519 | 4,243
Gross amounts not offset in the Consolidated Statements of Financial Condition |  |
Offsetting derivative positions | (1) | (2,823)
Collateral posted | $ (8,518) | (1,317)
Net credit exposure |  | $ 103

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