Deposits - Time deposit accounts in excess of $250 thousand (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Time deposits $250,000 or more
Three months or less	$ 32,967	$ 63,099
More than three months through twelve months	169,830	197,141
Over twelve months	28,280	90,361
Total	$ 231,077	$ 350,601

The amount of time deposit accounts in excess of $250 thousand three months through 12 months.

No definition available.

Name:	egbn_TimeDepositAccountsInExcessOf250ThousandThreeMonthsThrough12Months
Namespace Prefix:	egbn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant