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Commitments and Contingencies - Litigation (Details)
$ in Thousands
Apr. 28, 2018
USD ($)
Unasserted Claim [Member]  
Loss Contingencies [Line Items]  
Loss Contingency, Estimate of Possible Loss $ 1,904
Collectibility of Receivables [Member]  
Loss Contingencies [Line Items]  
Loss contingency accrual $ 2,224