Quarterly report pursuant to Section 13 or 15(d)

Segments - Narrative (Details)

v3.7.0.1
Segments - Narrative (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2017
USD ($)
Segment
Dec. 31, 2016
Segment Reporting Information [Line Items]    
Number of reportable segments | Segment 2  
Intersegment Elimination    
Segment Reporting Information [Line Items]    
Inter-segment sales $ 0  
Inter-segment allocation of interest expense $ 0  
Customer 1 | Customer Concentration Risk | Sales Revenue, Net    
Segment Reporting Information [Line Items]    
Concentration percentage 10.00%  
Customer 1 | Customer Concentration Risk | Accounts Receivable    
Segment Reporting Information [Line Items]    
Concentration percentage   10.00%