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Deposits - Time deposit maturities of $100,000 and $250,000 or more (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Amount $250,000 or more |  |
Three months or less | $ 571,535 |
Over three months through six months | 332,352 |
Over six months through twelve months | 774,224 |
Over twelve months | 95,319 |
Time deposits | $ 1,773,430 | $ 1,280,000

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- Definition Contractual Maturities, Time Deposits, $250,000 or More [Abstract] + References No definition available. + Details
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- Definition Contractual Maturities, Time Deposits, $250,000 or More, Six Months Through 12 Months + References No definition available. + Details
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Namespace Prefix: | hope_
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- Definition Contractual Maturities, Time Deposits, $250,000 or More, Three Months Through Six Months + References No definition available. + Details
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- Definition Contractual Maturities, Time Deposits, $250,000 or More, Three Months or Less + References No definition available. + Details
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- Definition Contractual Maturities, Time Deposits, $250,000 or More, after 12 Months + References No definition available. + Details
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Namespace Prefix: | hope_
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- Definition Time Deposits, $250,000 or More + References No definition available. + Details
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Namespace Prefix: | hope_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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