|
Document and Entity Information
|
9 Months Ended | ||
|---|---|---|---|
|
Apr. 30, 2013
|
Jun. 01, 2013
Class A [Member]
|
Jun. 01, 2013
Class B [Member]
|
|
| Class of Stock [Line Items] | |||
| Entity Registrant Name | ECOLOGY & ENVIRONMENT INC | ||
| Entity Central Index Key | 0000809933 | ||
| Current Fiscal Year End Date | --07-31 | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | No | ||
| Entity Filer Category | Smaller Reporting Company | ||
| Entity Common Stock, Shares Outstanding | 2,606,041 | 1,643,773 | |
| Document Fiscal Year Focus | 2013 | ||
| Document Fiscal Period Focus | Q3 | ||
| Document Type | 10-Q | ||
| Amendment Flag | false | ||
| Document Period End Date | Apr. 30, 2013 | ||