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Commitments and Contingencies - Narrative - Legal Matters (Details)
Mar. 31, 2017
USD ($)
case
Jan. 16, 2015
USD ($)
Nov. 30, 2013
employee
Asbestos Litigation      
Loss Contingencies [Line Items]      
Unresolved asbestos cases pending | case 71    
Accrued estimated liability $ 300,000    
Inflective Inc. Litigation      
Loss Contingencies [Line Items]      
Damages 3,000,000    
Socorro Litigation | James Chavez, Andrew Baca, and Spouses      
Loss Contingencies [Line Items]      
Litigation liability accrued $ 0    
Occupational Safety | State of California, Division of Occupational Safety & Health | Rancho Cordova Facility      
Loss Contingencies [Line Items]      
Damages   $ 100,000  
Number of injured employees | employee     2
Number of deceased employees | employee     1