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Shareholders' Equity - Dividends and Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividends
Dividends declared and paid by subsidiary	$ 15,622	$ 20,100	$ 2,850
Dividends declared and paid during the period	$ 5,530	$ 5,805	$ 4,270
Dividends declared, per share	$ 0.44	$ 0.43	$ 0.31
California
Class of Stock [Line Items]
Dividends available for distribution free of restrictions	$ 26,191

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Dividends Declared By Subsidiary

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The amount of dividends that can be declared or paid without affecting the banking or savings institution's regulatory capital position.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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Aggregate dividends declared during the period for each share of common stock outstanding.

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-Topic 505
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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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