v3.7.0.1
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration of Credit Risk and Significant Customers (Details) - Customer Concentration Risk
3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Mar. 31, 2016
VAD A | Sales      
Revenue, Major Customer [Line Items]      
Significant customer, as a percentage 15.10%   13.30%
VAD A | Accounts Receivable      
Revenue, Major Customer [Line Items]      
Significant customer, as a percentage 19.40% 22.40%  
VAD B | Sales      
Revenue, Major Customer [Line Items]      
Significant customer, as a percentage 19.60%    
VAD B | Accounts Receivable      
Revenue, Major Customer [Line Items]      
Significant customer, as a percentage 15.20% 14.40%  
VAD C [Member] | Accounts Receivable      
Revenue, Major Customer [Line Items]      
Significant customer, as a percentage   15.30%