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Commitments and Contingencies (Details) - USD ($)
$ in Millions
1 Months Ended
Nov. 21, 2016
Apr. 29, 2017
Oct. 29, 2016
Jul. 30, 2016
Loss Contingencies [Line Items]        
Loss Contingency, Estimate of Possible Loss     $ 13.0  
Loss Contingency Accrual, Payments $ 0.1      
Letters of credit outstanding amount   $ 57.6   $ 57.6
Standby Letters of Credit        
Loss Contingencies [Line Items]        
Letters of credit outstanding amount   57.6   57.6
Performance Guarantee and Surety Bond        
Loss Contingencies [Line Items]        
Outstanding performance and other surety contract bonds   130.9   $ 165.8
Goodman Networks, Inc. Wireline Operations        
Loss Contingencies [Line Items]        
Escrow Deposit   20.0    
Indemnification Portion Subject to Certain Conditions, Not Less Than Twelve Months | Goodman Networks, Inc. Wireline Operations        
Loss Contingencies [Line Items]        
Escrow Deposit   10.0    
Indemnification Portion Subject to Seller Satisfaction of Certain Liabilities | Goodman Networks, Inc. Wireline Operations        
Loss Contingencies [Line Items]        
Escrow Deposit   10.0    
Seller Liability, Satisfaction Required for Contingent Consideration   $ 31.7