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GOODWILL AND OTHER INTANGIBLE ASSETS (Details) (USD $)
 12 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 28, 2012
Dec. 30, 2011
Dec. 27, 2013
Aug. 31, 2011
Energy Solutions
Jun. 29, 2012
Energy Solutions
Dec. 28, 2012
Energy Solutions
Dec. 30, 2011
Energy Solutions
Dec. 28, 2012
Financial Services
Dec. 30, 2011
Financial Services
Dec. 28, 2012
Homeland Security Services
Dec. 30, 2011
Homeland Security Services
Changes in carrying value of goodwill                      
Goodwill, beginning balance $ 15,208,000 $ 12,475,000 $ 0     $ 15,208,000 $ 12,475,000        
Goodwill Additions   2,733,000         2,733,000        
Goodwill impairment (15,208,000)       (15,200,000) (15,208,000)          
Goodwill, ending balance   15,208,000 0       15,208,000        
Earn-out payment   2,733,000   2,700,000              
Goodwill balances                      
Goodwill 18,119,000 18,119,000       15,208,000 15,208,000 2,763,000 2,763,000 148,000 148,000
Accumulated impairment (18,119,000) (2,911,000)       (15,208,000)   (2,763,000) (2,763,000) (148,000) (148,000)
Goodwill balances   $ 15,208,000 $ 0       $ 15,208,000