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Shareholders' Equity - Dividends and Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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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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- Definition The amount of dividends that can be declared or paid without affecting the banking or savings institution's regulatory capital position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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