Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - (Details)

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Commitments and Contingencies - (Details) - Aviation Litigation
$ in Millions
1 Months Ended
Apr. 01, 2016
plaintiff
Nov. 30, 2016
USD ($)
defendant
plaintiff
Contingencies [Abstract]    
Number of plaintiffs   5
Number of defendants | defendant   6
Number of plaintiff deaths 3  
Number of plaintiffs injured 6  
Loss contingency, damages sought | $   $ 1.0