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Summary of Significant Accounting Policies - Concentration of Credit Risk and Significant Customers (Details)

v3.8.0.1
Summary of Significant Accounting Policies - Concentration of Credit Risk and Significant Customers (Details) - Customer Concentration Risk
3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Third-Party Customer | Sales Revenue, Net      
Concentration Risk [Line Items]      
Concentration risk, percentage   37.00%  
Related Party Customer | Trade Accounts Receivable      
Concentration Risk [Line Items]      
Concentration risk, percentage 56.00%   57.00%
One Related Party Customer | Trade Accounts Receivable      
Concentration Risk [Line Items]      
Concentration risk, percentage 52.00%   53.00%
One Related Party Customer | Sales Revenue, Net      
Concentration Risk [Line Items]      
Concentration risk, percentage 59.00% 7.00%  
Second Third-Party Customer | Sales Revenue, Net      
Concentration Risk [Line Items]      
Concentration risk, percentage   19.00%