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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets [Abstract]
Securities to be held to maturity, fair value	$ 377,134	$ 287,045
Stockholders' Equity Note [Abstract]
Common stock, par value (usd per share)	$ 0.01	$ 0.01

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Face amount or stated value per share of common stock.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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