XML 67 R56.htm IDEA: XBRL DOCUMENT v3.10.0.1
Debt - Term Loan Facility (Details)
3 Months Ended 9 Months Ended
Dec. 19, 2017
Dec. 18, 2017
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Sep. 30, 2017
USD ($)
Debt Instrument [Line Items]              
Line of credit facility, maximum borrowing capacity     $ 47,000,000   $ 47,000,000   $ 46,800,000
Term Loan Facility              
Debt Instrument [Line Items]              
Line of credit facility, maximum borrowing capacity     655,000,000   655,000,000    
Line of credit facility, increase in maximum borrowing capacity     $ 175,000,000.0   $ 175,000,000.0    
Secured net leverage ratio of available amount     4.1   4.1    
Percentage of aggregate annual amount to be paid every quarter         1.00%    
Weighted average interest rate for term loan facility     5.44%   5.44%    
Amortization of debt discount     $ 100,000 $ 100,000 $ 300,000 $ 400,000  
Secured debt | Term Loan Facility | LIBOR              
Debt Instrument [Line Items]              
Basis spread   3.75%          
Secured debt | Term Loan Facility | Base Rate              
Debt Instrument [Line Items]              
Basis spread   2.75%          
TLB Amendment No. 2 | Secured debt | Term Loan Facility              
Debt Instrument [Line Items]              
Decrease in basis spread 0.50%            
TLB Amendment No. 2 | Secured debt | Term Loan Facility | LIBOR              
Debt Instrument [Line Items]              
Basis spread 3.25%            
Prepayment premium 1.00%            
TLB Amendment No. 2 | Secured debt | Term Loan Facility | Base Rate              
Debt Instrument [Line Items]              
Basis spread 2.25%