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Deposits - Time deposit accounts in excess of $250 thousand (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Time deposits $250,000 or more |  |
Three months or less | $ 16,663 | $ 32,967
More than three months through six months | 56,619 | 122,192
More than six months through twelve months | 48,271 | 47,638
Over twelve months | 30,907 | 28,280
Total | $ 152,460 | $ 231,077

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- Definition Time Deposit Accounts in Excess of $250 Thousand More Than Three Months Through Six Months + References No definition available. + Details
Name: | egbn_TimeDepositAccountsInExcessOf250ThousandMoreThanThreeMonthsThroughSixMonths
Namespace Prefix: | egbn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of time deposit accounts in excess of $250 thousand over 12 Months. + References No definition available. + Details
Name: | egbn_TimeDepositAccountsInExcessOf250ThousandOver12Months
Namespace Prefix: | egbn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of time deposit accounts in excess of $250 thousand three months Or less . + References No definition available. + Details
Name: | egbn_TimeDepositAccountsInExcessOf250ThousandThreeMonthsOrLess
Namespace Prefix: | egbn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of time deposit accounts in excess of $250 thousand three months through 12 months. + References No definition available. + Details
Name: | egbn_TimeDepositAccountsInExcessOf250ThousandThreeMonthsThrough12Months
Namespace Prefix: | egbn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | egbn_TimeDeposits250000OrMoreAbstract
Namespace Prefix: | egbn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of total time deposits accounts in excess of $250 Thousand . + References No definition available. + Details
Name: | egbn_TimeDepositsAccountsInExcessOf250Thousand
Namespace Prefix: | egbn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant