Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

v3.4.0.3
Summary of Significant Accounting Policies - Narrative (Details) - Customer concentration risk - customer
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Revenue      
Concentration Risk [Line Items]      
Number of major customers representing 10% or more of total revenue/total accounts receivable 0 0  
Accounts receivable      
Concentration Risk [Line Items]      
Number of major customers representing 10% or more of total revenue/total accounts receivable 0 0 0