Quarterly report pursuant to Section 13 or 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
Nov. 08, 2016
Dec. 31, 2017
Oct. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
May 31, 2017
Jun. 30, 2017
Mar. 31, 2017
Mar. 31, 2016
Dec. 22, 2017
Jul. 27, 2016
Subsequent Event [Line Items]                              
Loss on extinguishment of debt                       $ (14,389,000) $ 0    
Line of Credit                              
Subsequent Event [Line Items]                              
Maximum borrowing capacity       $ 585,000,000                      
Percentage of outstanding equity in foreign subsidiaries pledged as collateral                       65.00%      
Line of Credit | Secured Debt                              
Subsequent Event [Line Items]                              
Maximum borrowing capacity       $ 500,000,000                      
Periodic principal payment, as a percent first 8 quarterly payments       0.25%                      
Line of Credit | Secured Debt | Base Rate                              
Subsequent Event [Line Items]                              
Basis spread on variable rate       5.00%                      
Line of Credit | Secured Debt | Adjusted Base Eurocurrency Rate                              
Subsequent Event [Line Items]                              
Basis spread on variable rate       6.00%                      
Line of Credit | Revolving Credit Facility                              
Subsequent Event [Line Items]                              
Maximum borrowing capacity       $ 85,000,000                      
Loss on extinguishment of debt                       $ 14,500,000      
Line of Credit | Revolving Credit Facility | Base Rate                              
Subsequent Event [Line Items]                              
Basis spread on variable rate       5.00%                      
Line of Credit | Revolving Credit Facility | Base Rate | Minimum                              
Subsequent Event [Line Items]                              
Basis spread on variable rate       4.50%                      
Line of Credit | Revolving Credit Facility | Base Rate | Maximum                              
Subsequent Event [Line Items]                              
Basis spread on variable rate       5.00%                      
Line of Credit | Revolving Credit Facility | Adjusted Base Eurocurrency Rate                              
Subsequent Event [Line Items]                              
Basis spread on variable rate       6.00%                      
Line of Credit | Revolving Credit Facility | Adjusted Base Eurocurrency Rate | Minimum                              
Subsequent Event [Line Items]                              
Basis spread on variable rate       5.50%                      
Line of Credit | Revolving Credit Facility | Adjusted Base Eurocurrency Rate | Maximum                              
Subsequent Event [Line Items]                              
Basis spread on variable rate       6.00%                      
Line of Credit | Letters of Credit                              
Subsequent Event [Line Items]                              
Maximum borrowing capacity       $ 15,000,000                      
Line of Credit | Subsequent Event | Secured Debt                              
Subsequent Event [Line Items]                              
Periodic principal payment, as a percent first 8 quarterly payments                   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 percentage 0.25%         0.05% 0.25% 0.25% 0.25% 1.00% 0.25%        
Consent fee paid           $ 231,000 $ 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                          
Fee as percentage of outstanding balance if 12/31/2016 financials not filed by January 31, 2018                           0.25%  
Line of Credit | Subsequent Event | Secured Debt | Base Rate                              
Subsequent Event [Line Items]                              
Basis spread on variable rate 6.50% 6.25%               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%               7.00%          
Line of Credit | Subsequent Event | Revolving Credit Facility | Base Rate                              
Subsequent Event [Line Items]                              
Basis spread on variable rate 6.50% 6.25%               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%                 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%                 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%               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%                 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%                 7.00%        
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                        
Shareco Group of America, Inc.                              
Subsequent Event [Line Items]                              
Percentage of common stock to be issued         9.90%                    
Price per share of common stock to be issued         $ 11.00