XML 60 R39.htm IDEA: XBRL DOCUMENT v3.19.2
Debt - Additional Information (Details)
$ / shares in Units, shares in Millions
1 Months Ended 3 Months Ended 9 Months Ended
May 14, 2018
USD ($)
day
$ / shares
Jul. 31, 2017
USD ($)
$ / shares
Jul. 31, 2014
USD ($)
Jun. 30, 2014
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Jun. 15, 2019
USD ($)
Nov. 30, 2018
CAD ($)
Oct. 01, 2018
$ / shares
Sep. 30, 2018
USD ($)
Jun. 30, 2018
USD ($)
Debt Instrument [Line Items]                      
Principal amount         $ 318,202,000 $ 318,202,000          
Share price (usd per share) | $ / shares                 $ 10.51    
Carrying amount         235,664,000 235,664,000       $ 416,883,000 $ 418,693,000
Amount outstanding         $ 318,202,000 318,202,000       515,106,000 522,223,000
2025 Convertible Notes                      
Debt Instrument [Line Items]                      
If-converted value in excess of principal amount           $ 0          
2024 Convertible Notes                      
Debt Instrument [Line Items]                      
Stated interest rate   2.875%                  
Principal amount   $ 143,750,000                  
Effective interest rate         9.00% 9.00%          
If-converted value in excess of principal amount           $ 0          
Convertible senior notes issued and settled   34,400,000                  
2019 Convertible Notes                      
Debt Instrument [Line Items]                      
Stated interest rate       2.125%              
Effective interest rate         8.00% 8.00%          
Convertible senior notes issued and settled     $ 30,000,000 $ 200,000,000              
Convertible senior notes repurchased and retired   $ 35,000,000.0                  
Remaining aggregate principal amount repurchased             $ 195,000,000.0        
Common Stock Class A Non-voting | 2024 Convertible Notes                      
Debt Instrument [Line Items]                      
Conversion rate per $1,000 principal amount   100                  
Conversion price, per share (in dollars per share) | $ / shares   $ 10.00                  
Additional Paid-in Capital | 2024 Convertible Notes                      
Debt Instrument [Line Items]                      
Carrying amount         $ 25,300,000 $ 25,300,000          
Senior Notes | 2025 Convertible Notes                      
Debt Instrument [Line Items]                      
Stated interest rate 2.375%                    
Principal amount $ 172,500,000       172,500,000 172,500,000          
Semi-annual stated rate 2.375%                    
Equity component of debt         $ 39,000,000.0 $ 39,000,000.0          
Effective interest rate         9.00% 9.00%          
Conversion rate per $1,000 principal amount 62.8931                    
Conversion price, per share (in dollars per share) | $ / shares $ 15.90                    
Share price (usd per share) | $ / shares $ 15.90                    
Carrying amount         $ 124,542,000 $ 124,542,000       119,736,000 118,335,000
Amount outstanding         172,500,000 172,500,000       172,500,000 172,500,000
Senior Notes | 2024 Convertible Notes                      
Debt Instrument [Line Items]                      
Principal amount         143,750,000 143,750,000          
Carrying amount         109,909,000 109,909,000       105,858,000 104,562,000
Amount outstanding         143,750,000 143,750,000       143,750,000 143,750,000
Senior Notes | 2019 Convertible Notes                      
Debt Instrument [Line Items]                      
Carrying amount         0 0       187,433,000 184,823,000
Amount outstanding         0 0       195,000,000 195,000,000
Receivables Securitization Facility | CASHMAX secured borrowing facility                      
Debt Instrument [Line Items]                      
Principal amount         804,000 804,000          
Carrying amount         65,000 65,000       0 0
Amount outstanding         $ 804,000 $ 804,000       $ 0 $ 0
Debt Conversion, Condition One | Senior Notes | 2025 Convertible Notes                      
Debt Instrument [Line Items]                      
Trading days threshold | day 20                    
Consecutive trading day threshold | day 30                    
Net-share-settled Warrants | Common Stock Class A Non-voting                      
Debt Instrument [Line Items]                      
Number of securities called (shares) | shares       12.1              
Strike price for warrants (in dollars per share) | $ / shares       $ 20.83              
Variable Interest Entity, Primary Beneficiary | Receivables Securitization Facility | CASHMAX secured borrowing facility                      
Debt Instrument [Line Items]                      
Maximum borrowing amount               $ 25,000,000