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Commitments and Contingencies - Litigation (Details) - USD ($)
$ in Millions
2 Months Ended
Jan. 25, 2016
Dec. 28, 2015
Jul. 16, 2013
Oct. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Nov. 06, 2014
Loss Contingencies [Line Items]              
Common stock, shares issued (in shares)         42,070,675 35,281,375  
Primus/Xplornet License Matters              
Loss Contingencies [Line Items]              
Damages sought     $ 50.0        
Chemours Demand for Arbitration | Mistaken Payment              
Loss Contingencies [Line Items]              
Damages sought   $ 5.0          
Chemours Demand for Arbitration | Alleged Breaches              
Loss Contingencies [Line Items]              
Damages sought   $ 18.0          
Chemours Demand for Arbitration | Unpaid Work Performed              
Loss Contingencies [Line Items]              
Damages sought $ 0.3            
Global Marine Dispute [Member]              
Loss Contingencies [Line Items]              
Loss Contingency, Delinquent Payments         $ 10.7    
Loss Contingency, Additional Delinquent Payments Expected         $ 1.4    
Global Marine Dispute [Member] | Mistaken Payment              
Loss Contingencies [Line Items]              
Damages sought       $ 3.1      
Global Marine Dispute [Member] | Liquidated Damages [Member]              
Loss Contingencies [Line Items]              
Damages sought       $ 1.2      
DBMG              
Loss Contingencies [Line Items]              
Common stock, shares issued (in shares)             721,000