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NOTE 11 - STOCK COMPENSATION PLANS (Details) - Schedule of Share-basd Compensation, Restricted Stock Activity (Restricted Stock [Member], USD $)
12 Months Ended
Dec. 27, 2014
January 8, 2014 [Member]
 
NOTE 11 - STOCK COMPENSATION PLANS (Details) - Schedule of Share-basd Compensation, Restricted Stock Activity [Line Items]  
Restricted Stock, Shares Issued to Directors (3)
Restricted Stock, Number of Shares 93,750us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross
/ us-gaap_AwardDateAxis
= eng_January8_2014Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Restricted Stock, Market Price $ 1.60us-gaap_SharePrice
/ us-gaap_AwardDateAxis
= eng_January8_2014Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Restricted Stock, Fair Value $ 150,000us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross
/ us-gaap_AwardDateAxis
= eng_January8_2014Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
January 8, 2014 #2 [Member]
 
NOTE 11 - STOCK COMPENSATION PLANS (Details) - Schedule of Share-basd Compensation, Restricted Stock Activity [Line Items]  
Restricted Stock, Shares Issued to Employees (19)
Restricted Stock, Number of Shares 500,000us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross
/ us-gaap_AwardDateAxis
= eng_January8_2014_2Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Restricted Stock, Market Price $ 1.60us-gaap_SharePrice
/ us-gaap_AwardDateAxis
= eng_January8_2014_2Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Restricted Stock, Fair Value 800,000us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross
/ us-gaap_AwardDateAxis
= eng_January8_2014_2Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
April 23, 2014 [Member]
 
NOTE 11 - STOCK COMPENSATION PLANS (Details) - Schedule of Share-basd Compensation, Restricted Stock Activity [Line Items]  
Restricted Stock, Shares Issued to Employee (1)
Restricted Stock, Number of Shares 15,000us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross
/ us-gaap_AwardDateAxis
= eng_April23_2014Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Restricted Stock, Market Price $ 2.22us-gaap_SharePrice
/ us-gaap_AwardDateAxis
= eng_April23_2014Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Restricted Stock, Fair Value 33,300us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross
/ us-gaap_AwardDateAxis
= eng_April23_2014Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
June 19, 2014 [Member]
 
NOTE 11 - STOCK COMPENSATION PLANS (Details) - Schedule of Share-basd Compensation, Restricted Stock Activity [Line Items]  
Restricted Stock, Shares Issued to Directors (3)
Restricted Stock, Number of Shares 43,731us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross
/ us-gaap_AwardDateAxis
= eng_June19_2014Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Restricted Stock, Market Price $ 3.43us-gaap_SharePrice
/ us-gaap_AwardDateAxis
= eng_June19_2014Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Restricted Stock, Fair Value $ 150,000us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross
/ us-gaap_AwardDateAxis
= eng_June19_2014Member
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember