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Basis of Presentation and General Information (Carrying Amounts of Major Classes of Assets and Liabilities Presented in Discontinued Operations) (Details)
$ in Thousands
Dec. 28, 2018
USD ($)
ASSETS  
Assets related to discontinued operations $ 137
LIABILITIES  
Liabilities related to discontinued operations 2,300
European REL Working Capital group [Member]  
ASSETS  
Accounts receivable and unbilled revenue, net of allowance of $0 and $0 at December 27, 2019 and December 28, 2018, respectively 137
Assets related to discontinued operations 137
LIABILITIES  
Accrued expenses and other liabilities 2,300
Liabilities related to discontinued operations $ 2,300