Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

v3.2.0.727
Summary of Significant Accounting Policies - Narrative (Details)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2015
performance_period
Jun. 30, 2015
customer
Jun. 30, 2014
customer
Jun. 30, 2015
customer
Dec. 31, 2014
customer
Revenue | Customer concentration risk          
Concentration Risk [Line Items]          
Number of major customers representing 10% or more of total revenue/total accounts receivable   0 0    
Accounts receivable | Customer concentration risk          
Concentration Risk [Line Items]          
Number of major customers representing 10% or more of total revenue/total accounts receivable       0 0
Market stock units          
Concentration Risk [Line Items]          
Number of performance periods | performance_period 3