Securities - Schedule of Gross Realized Gains and Losses on the Sales and Calls of Securities as well as Gains and Losses on Equity Securities as well as Result of the Adoption of the ASU 2016-01 (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
Available-for-Sale Securities, Gross Unrealized Gain (Loss) [Line Items] | |||
Net securities gains (losses) | $ 4,320 | $ (900) | $ 567 |
Debt Securities [Member] | |||
Available-for-Sale Securities, Gross Unrealized Gain (Loss) [Line Items] | |||
Gross realized gains | 1,497 | 128 | 675 |
Gross realized losses | (981) | (46) | (108) |
Net gains on debt securities | 516 | 82 | $ 567 |
Equity Securities [Member] | |||
Available-for-Sale Securities, Gross Unrealized Gain (Loss) [Line Items] | |||
Unrealized gains (losses) recognized on securities still held | 1,226 | (986) | |
Net realized gains recognized on securities sold | 2,578 | 4 | |
Net gains (losses) on equity securities | $ 3,804 | $ (982) |