NOTE 6 - LINE OF CREDIT AND LETTER OF CREDIT FACILITIES (Details) (Line of Credit [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
Aug. 30, 2013	May 29, 2012
NOTE 6 - LINE OF CREDIT AND LETTER OF CREDIT FACILITIES (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 10.0	$ 35.0
Line of Credit Facility, Covenant Compliance		From September 29, 2012 until August 30, 2013, the Company was not in compliance with certain financial covenants of the PNC Credit Facility.
Line of Credit Facility, Expiration Date	Sep. 30, 2014
Maximum [Member]
NOTE 6 - LINE OF CREDIT AND LETTER OF CREDIT FACILITIES (Details) [Line Items]
Line of Credit Facility, Interest Rate During Period	7.00%

Name:	eng_NOTE6LINEOFCREDITANDLETTEROFCREDITFACILITIESDetailsLineItems
Namespace Prefix:	eng_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Identification of whether the entity has been in compliance with any credit facility debt covenants during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityCovenantCompliance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant