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Segment Information (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
segment
Segment
Dec. 31, 2015
Dec. 31, 2014
Segment Reporting Information [Line Items]      
Number of reporting segments | Segment 1    
Number of operating segments | segment 5    
Operating Segments | Texas Division      
Segment Reporting Information [Line Items]      
Percentage of operations 51.20% 55.60% 66.60%
Intersegment Eliminations      
Segment Reporting Information [Line Items]      
Inter-segment sales | $ $ 0