Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v3.8.0.1
Subsequent Events (Details) - USD ($)
1 Months Ended 3 Months Ended
Oct. 31, 2017
Oct. 02, 2017
Jul. 27, 2017
Jan. 06, 2017
Oct. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
May 31, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Jul. 27, 2016
Line of Credit                        
Subsequent Event [Line Items]                        
Percentage of outstanding equity in foreign subsidiaries pledged as collateral                     65.00%  
Line of Credit | Subsequent Event | Secured Debt                        
Subsequent Event [Line Items]                        
Maximum borrowing capacity on line of credit       $ 500,000,000                
Debt instrument, term       6 years                
Periodic principal payment, as a percent first 8 quarterly payments       0.25%       0.625%        
Periodic principal payment, as a percent after first 8 quarterly payments               1.25%        
Prepayment premium percentage through May 2020   2.00%                    
Prepayment premium percentage through May 2021   1.00%                    
Maximum adjusted consolidated EBITDA allowed               $ 5,000,000        
Consent fee 0.25%       0.25% 0.25% 0.25% 1.00% 0.25%      
Consent fee paid         $ 1,400,000 $ 1,400,000 $ 3,900,000 $ 5,600,000        
Fee as percentage of outstanding balance if 12/31/2016 financials not filed by June 30, 2017             0.25%   0.25%      
Fee as percentage of outstanding balance if 12/31/2016 financials not filed by July 31, 2017             0.25%   0.25%      
Maximum range of estimated revenue $ 5,000,000 $ 5,000,000                    
Line of Credit | Subsequent Event | Secured Debt | Base Rate                        
Subsequent Event [Line Items]                        
Basis spread on variable rate 6.50% 6.25%   5.00%       6.00%        
Line of Credit | Subsequent Event | Secured Debt | Adjusted Base Eurocurrency Rate                        
Subsequent Event [Line Items]                        
Basis spread on variable rate 7.50% 7.25%   6.00%       7.00%        
Line of Credit | Subsequent Event | Revolving Credit Facility                        
Subsequent Event [Line Items]                        
Maximum borrowing capacity on line of credit       $ 85,000,000                
Debt instrument, term       5 years                
Gain (Loss) on Extinguishment of Debt                   $ 13,500,000    
Line of Credit | Subsequent Event | Revolving Credit Facility | Base Rate                        
Subsequent Event [Line Items]                        
Basis spread on variable rate 6.50% 6.25%   5.00%       6.00%        
Line of Credit | Subsequent Event | Revolving Credit Facility | Base Rate | Minimum                        
Subsequent Event [Line Items]                        
Basis spread on variable rate 6.00% 5.75%   4.50%         5.50%      
Line of Credit | Subsequent Event | Revolving Credit Facility | Base Rate | Maximum                        
Subsequent Event [Line Items]                        
Basis spread on variable rate 6.50% 6.25%   5.00%         6.00%      
Line of Credit | Subsequent Event | Revolving Credit Facility | Adjusted Base Eurocurrency Rate                        
Subsequent Event [Line Items]                        
Basis spread on variable rate 7.50% 7.25%   6.00%       7.00%        
Line of Credit | Subsequent Event | Revolving Credit Facility | Adjusted Base Eurocurrency Rate | Minimum                        
Subsequent Event [Line Items]                        
Basis spread on variable rate 7.00% 6.75%   5.50%         6.50%      
Line of Credit | Subsequent Event | Revolving Credit Facility | Adjusted Base Eurocurrency Rate | Maximum                        
Subsequent Event [Line Items]                        
Basis spread on variable rate 7.50% 7.25%   6.00%         7.00%      
Line of Credit | Subsequent Event | Revolving Credit Facility | EURIBOR rate | Minimum                        
Subsequent Event [Line Items]                        
Basis spread on variable rate       5.50%                
Line of Credit | Subsequent Event | Revolving Credit Facility | EURIBOR rate | Maximum                        
Subsequent Event [Line Items]                        
Basis spread on variable rate       6.00%                
Line of Credit | Subsequent Event | Letters of Credit                        
Subsequent Event [Line Items]                        
Maximum borrowing capacity on line of credit       $ 15,000,000                
Emerging Markets Communications LLC                        
Subsequent Event [Line Items]                        
Deferred consideration settled with company shares                       $ 40,607,000
Emerging Markets Communications LLC | Subsequent Event                        
Subsequent Event [Line Items]                        
Number of shares issued to settle deferred consideration     5,080,049