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Securities Held-to-Maturity - Schedule of Maturity Profile of Securities Held-to-Maturity (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]    
Held-to-maturity due within one year $ 0 $ 0
Held-to-maturity due one year through five years 0 0
Held-to-maturity due five years through ten years 32 0
Held-to-maturity due over ten years 258 308
Held-to-maturity cost or amortized cost $ 290 $ 308