Quarterly report pursuant to Section 13 or 15(d)

Financing Arrangements - Narrative (Details)

v3.8.0.1
Financing Arrangements - Narrative (Details)
1 Months Ended 3 Months Ended 6 Months Ended 10 Months Ended 12 Months Ended
Oct. 31, 2017
USD ($)
Oct. 02, 2017
USD ($)
Jan. 06, 2017
USD ($)
Dec. 31, 2017
USD ($)
Oct. 31, 2017
USD ($)
Sep. 30, 2017
USD ($)
Jun. 30, 2017
USD ($)
May 31, 2017
USD ($)
Feb. 28, 2015
USD ($)
d
$ / shares
Jun. 30, 2017
USD ($)
Mar. 31, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jan. 25, 2018
USD ($)
Dec. 31, 2016
USD ($)
Jan. 30, 2018
USD ($)
Jul. 27, 2016
USD ($)
Oct. 18, 2013
USD ($)
Debt Instrument [Line Items]                                      
Loss on extinguishment of debt                   $ 0   $ 0 $ (14,389,000) $ 0          
Capital Lease Obligations             $ 1,947,000     1,947,000     1,947,000     $ 2,000,000      
Capital lease obligations incurred                               1,000,000      
Other debts                     $ 400,000                
IFES Acquisition Corp Limited                                      
Debt Instrument [Line Items]                                      
Effective interest rate percentage                     1.75%                
EMC Acquisition [Member]                                      
Debt Instrument [Line Items]                                      
Capital lease obligation assumed                                   $ 1,100,000  
Line of Credit                                      
Debt Instrument [Line Items]                                      
Borrowings outstanding under facility letters             700,000     700,000     700,000     700,000      
Line of Credit                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity     $ 585,000,000                                
Letters of credit outstanding             $ 7,000,000     $ 7,000,000     $ 7,000,000            
Percentage of outstanding equity in foreign subsidiaries pledged as collateral             65.00%     65.00%     65.00%            
Line of Credit | Secured Debt                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity     $ 500,000,000                                
Periodic payment, period one     0.25%         0.625%                      
Maximum consolidated EBITDA               $ 5,000,000                      
Periodic payment period two               1.25%                      
Consent fee percentage             0.25% 1.00%   0.25%     0.25%            
Consent fee paid             $ 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%     0.25%            
Fee for failure to report, second deadline             0.25%     0.25%     0.25%            
Line of Credit | Revolving Credit Facility                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity     $ 85,000,000                                
Loss on extinguishment of debt                     $ 13,500,000                
Line of Credit | Letters of Credit                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity     $ 15,000,000                                
Letters of credit outstanding             $ 6,000,000     $ 6,000,000     $ 6,000,000            
Convertible senior notes                                      
Debt Instrument [Line Items]                                      
Debt instrument, face amount                 $ 82,500,000                    
Stated interest rate             2.75%   2.75% 2.75%     2.75%            
Conversion ratio                 0.0539084                    
Conversion price (in usd per share) | $ / shares                 $ 18.55                    
Fair value of debt             $ 69,500,000     $ 69,500,000     $ 69,500,000            
Convertible debt             69,400,000     69,400,000     69,400,000     69,000,000      
Equity component of convertible debt             13,000,000     13,000,000     13,000,000            
Long-term Debt             82,500,000     82,500,000     82,500,000     82,500,000      
Convertible senior notes | Liability component                                      
Debt Instrument [Line Items]                                      
Debt issuance costs                 $ 1,800,000                    
Convertible senior notes | Additional paid-in capital                                      
Debt Instrument [Line Items]                                      
Debt issuance costs                 $ 300,000                    
Convertible senior notes | If company undergoes a fundamental change                                      
Debt Instrument [Line Items]                                      
Redemption price percentage                 100.00%                    
Convertible senior notes | On or after February 20, 2019                                      
Debt Instrument [Line Items]                                      
Percent of stock price to trigger conversion                 130.00%                    
Consecutive trading days                 30 days                    
Trading days | d                 20                    
Convertible senior notes | On or after February 20, 2022                                      
Debt Instrument [Line Items]                                      
Redemption price percentage                 100.00%                    
Convertible senior notes | Redemption scenario one | After March 31, 2015                                      
Debt Instrument [Line Items]                                      
Percent of stock price to trigger conversion                 130.00%                    
Convertible senior notes | Redemption scenario two | After March 31, 2015                                      
Debt Instrument [Line Items]                                      
Percent of stock price to trigger conversion                 98.00%                    
Consecutive business days | d                 5                    
Consecutive trading days                 5 days                    
Term loan facility                                      
Debt Instrument [Line Items]                                      
Long-term Debt             496,875,000     496,875,000     496,875,000     0      
Term loan facility | First Lien Credit Agreement                                      
Debt Instrument [Line Items]                                      
Long-term Debt             0     0     0     263,980,000      
Term loan facility | Second Lien Credit Agreement                                      
Debt Instrument [Line Items]                                      
Long-term Debt             $ 0     $ 0     0     92,000,000      
Commercial Mortgage Loan | Mortgage letters maturing October 2032 | IFES Acquisition Corp Limited                                      
Debt Instrument [Line Items]                                      
Business acquisition, assumed indebtedness                                     $ 1,100,000
Accrued interest on mortgage letters                         $ 0     $ 0      
Adjusted Base Eurocurrency Rate | Line of Credit | Secured Debt                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate     6.00%         7.00%                      
Adjusted Base Eurocurrency Rate | Line of Credit | Revolving Credit Facility                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate     6.00%         7.00%                      
Adjusted Base Eurocurrency Rate | Line of Credit | Revolving Credit Facility | Minimum                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate     5.50%             6.50%                  
Adjusted Base Eurocurrency Rate | Line of Credit | Revolving Credit Facility | Maximum                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate     6.00%             7.00%                  
Base Rate | Line of Credit | Secured Debt                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate     5.00%         6.00%                      
Base Rate | Line of Credit | Revolving Credit Facility                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate     5.00%         6.00%                      
Base Rate | Line of Credit | Revolving Credit Facility | Minimum                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate     4.50%             5.50%                  
Base Rate | Line of Credit | Revolving Credit Facility | Maximum                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate     5.00%             6.00%                  
Subsequent Event | Line of Credit | Secured Debt                                      
Debt Instrument [Line Items]                                      
Consent fee percentage 0.25%     0.05% 0.25% 0.25%                          
Consent fee paid       $ 231,000 $ 1,400,000 $ 1,400,000                          
Prepayment premium period one   2.00%                                  
Prepayment premium percentage through May 2021   1.00%                                  
Estimated covenant revenue range $ 5,000,000 $ 5,000,000                                  
Subsequent Event | Line of Credit | Revolving Credit Facility                                      
Debt Instrument [Line Items]                                      
Remaining borrowing capacity                                 $ 1,000,000    
Subsequent Event | Convertible senior notes                                      
Debt Instrument [Line Items]                                      
Increase in stated rate, first ninety days                             0.25%        
Increase in stated rate, second ninety days                             0.50%        
Penalty interest incurred                             $ 200,000        
Subsequent Event | Adjusted Base Eurocurrency Rate | Line of Credit | Secured Debt                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate 7.50% 7.25%                                  
Subsequent Event | Adjusted Base Eurocurrency Rate | Line of Credit | Revolving Credit Facility                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate 7.50% 7.25%                                  
Subsequent Event | Adjusted Base Eurocurrency Rate | Line of Credit | Revolving Credit Facility | Minimum                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate 7.00% 6.75%                                  
Subsequent Event | Adjusted Base Eurocurrency Rate | Line of Credit | Revolving Credit Facility | Maximum                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate 7.50% 7.25%                                  
Subsequent Event | Base Rate | Line of Credit | Secured Debt                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate 6.50% 6.25%                                  
Subsequent Event | Base Rate | Line of Credit | Revolving Credit Facility                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate 6.50% 6.25%                                  
Subsequent Event | Base Rate | Line of Credit | Revolving Credit Facility | Minimum                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate 6.00% 5.75%                                  
Subsequent Event | Base Rate | Line of Credit | Revolving Credit Facility | Maximum                                      
Debt Instrument [Line Items]                                      
Basis spread on variable rate 6.50% 6.25%