Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies - Additional Information (Details)

v3.5.0.2
Basis of Presentation and Significant Accounting Policies - Additional Information (Details) - Customer Concentration Risk [Member] - Customer
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Revenues [Member]          
Concentration Risk [Line Items]          
Number of major customers 2 2 3 2  
Revenues [Member] | Customer 1 [Member]          
Concentration Risk [Line Items]          
Concentration risk, percentage (in hundredths) 56.00% 48.00% 34.00% 60.00%  
Revenues [Member] | Customer 2 [Member]          
Concentration Risk [Line Items]          
Concentration risk, percentage (in hundredths) 15.00% 21.00% 25.00% 23.00%  
Revenues [Member] | Customer 3 [Member]          
Concentration Risk [Line Items]          
Concentration risk, percentage (in hundredths)     21.00%    
Accounts Receivable [Member]          
Concentration Risk [Line Items]          
Number of major customers     3    
Accounts Receivable [Member] | Customer 1 [Member]          
Concentration Risk [Line Items]          
Concentration risk, percentage (in hundredths)     62.00%    
Accounts Receivable [Member] | Customer 2 [Member]          
Concentration Risk [Line Items]          
Concentration risk, percentage (in hundredths)     12.00%    
Accounts Receivable [Member] | Customer 3 [Member]          
Concentration Risk [Line Items]          
Concentration risk, percentage (in hundredths)     11.00%    
Trade And Other Receivables [Member]          
Concentration Risk [Line Items]          
Number of major customers         4
Trade And Other Receivables [Member] | Customer 1 [Member]          
Concentration Risk [Line Items]          
Concentration risk, percentage (in hundredths)         39.00%
Trade And Other Receivables [Member] | Customer 2 [Member]          
Concentration Risk [Line Items]          
Concentration risk, percentage (in hundredths)         25.00%
Trade And Other Receivables [Member] | Customer 3 [Member]          
Concentration Risk [Line Items]          
Concentration risk, percentage (in hundredths)         18.00%
Trade And Other Receivables [Member] | Customer 4 [Member]          
Concentration Risk [Line Items]          
Concentration risk, percentage (in hundredths)         10.00%