XML 71 R59.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Note 10 - Stock-based Compensation - Stock Options Outstanding and Exercisable (Details) - $ / shares | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Dec. 31, 2014
Range 1 [Member] |  |  |  |
Outstanding options, exercise price range, lower limit (in dollars per share) | $ 5.76 |  |  |
Outstanding options, exercise price range, upper limit (in dollars per share) | $ 10.72 |  |  |
Stock options outstanding (in shares) | 156,345 |  |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 5.76 |  |  |
Options outstanding, weighted-average remaining contractual life | 2 years 98 days |  |  |
Stock options exercisable (in shares) | 104,298 |  |  |
Exercisable options, weighted-average exercise price (in dollars per share) | $ 5.76 |  |  |
Range 2 [Member] |  |  |  |
Outstanding options, exercise price range, lower limit (in dollars per share) | 10.73 |  |  |
Outstanding options, exercise price range, upper limit (in dollars per share) | $ 15.45 |  |  |
Stock options outstanding (in shares) | 59,232 |  |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 10.90 |  |  |
Options outstanding, weighted-average remaining contractual life | 1 year 167 days |  |  |
Stock options exercisable (in shares) | 59,232 |  |  |
Exercisable options, weighted-average exercise price (in dollars per share) | $ 10.90 |  |  |
Range 3 [Member] |  |  |  |
Outstanding options, exercise price range, lower limit (in dollars per share) | 15.46 |  |  |
Outstanding options, exercise price range, upper limit (in dollars per share) | $ 20.01 |  |  |
Stock options outstanding (in shares) | 36,747 |  |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 15.48 |  |  |
Options outstanding, weighted-average remaining contractual life | 47 days |  |  |
Stock options exercisable (in shares) | 36,747 |  |  |
Exercisable options, weighted-average exercise price (in dollars per share) | $ 15.48 |  |  |
Range 4 [Member] |  |  |  |
Outstanding options, exercise price range, lower limit (in dollars per share) | 20.02 |  |  |
Outstanding options, exercise price range, upper limit (in dollars per share) | $ 49.91 |  |  |
Stock options outstanding (in shares) | 17,221 |  |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 34.21 |  |  |
Options outstanding, weighted-average remaining contractual life | 7 years 167 days |  |  |
Stock options exercisable (in shares) | 6,901 |  |  |
Exercisable options, weighted-average exercise price (in dollars per share) | $ 22.74 |  |  |
Outstanding options, exercise price range, lower limit (in dollars per share) |  |  |  |
Outstanding options, exercise price range, upper limit (in dollars per share) |  |  |  |
Stock options outstanding (in shares) | 269,545 | 298,740 | 361,470 | 759,683
Options outstanding, weighted-average exercise price (in dollars per share) | $ 10.03 | $ 9.97 | $ 9.16 | $ 11.36
Options outstanding, weighted-average remaining contractual life | 2 years 47 days |  |  |
Stock options exercisable (in shares) | 207,178 |  |  |
Exercisable options, weighted-average exercise price (in dollars per share) | $ 9.52 |  |  |

X
- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=egbn_Range1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=egbn_Range2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=egbn_Range3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=egbn_Range4Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |