XML 58 R45.htm IDEA: XBRL DOCUMENT v3.19.1
Borrowings (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2012
USD ($)
Mar. 31, 2019
USD ($)
$ / shares
Mar. 31, 2018
USD ($)
Mar. 31, 2019
USD ($)
item
$ / shares
Mar. 31, 2018
USD ($)
Apr. 23, 2019
USD ($)
Jun. 30, 2018
USD ($)
Feb. 28, 2017
USD ($)
Dec. 31, 2016
USD ($)
Nov. 30, 2016
USD ($)
Borrowings                    
Borrowings outstanding   $ 124,000   $ 124,000     $ 113,000      
Components of long-term debt                    
Term loans   925   925     2,114      
Other long-term debt   1,985   1,985     1,658      
Total   257,113   257,113     251,242      
Less current portion of long-term debt   (1,702)   (1,702)     (2,262)      
Long-term portion of debt   255,411   $ 255,411     248,980      
Revolving Credit Facility                    
Borrowings                    
Maximum borrowing capacity           $ 535,000     $ 525,000 $ 450,000
Margin rate for each pricing tier       0.25%            
Sub limit available for letters of credit   300,000   $ 300,000            
Unused commitment fee (as a percent)       0.20%            
Borrowings outstanding   124,000   $ 124,000            
Amount outstanding under letters of credit   59,100   59,100            
Available credit facility   341,900   $ 341,900            
Revolving Credit Facility | Minimum                    
Borrowings                    
Unused commitment fee (as a percent)       0.20%            
Revolving Credit Facility | Maximum                    
Borrowings                    
Increase in the credit agreement's borrowing capacity available under certain circumstances   250,000   $ 250,000            
Unused commitment fee (as a percent)       0.30%            
Revolving Credit Facility | LIBOR                    
Borrowings                    
Interest rate margin (as a percent)       1.50%            
Revolving Credit Facility | LIBOR | Minimum                    
Borrowings                    
Interest rate margin (as a percent)       1.25%            
Revolving Credit Facility | LIBOR | Maximum                    
Borrowings                    
Interest rate margin (as a percent)       2.00%            
1.25% Convertible Senior Notes Due 2022                    
Borrowings                    
Principal amount   $ 287,500   $ 287,500       $ 287,500    
Interest rate (as a percentage)   1.25%   1.25%       1.25%    
Conversion ratio       9.3056            
Conversion price | $ / shares   $ 107.46   $ 107.46            
Premium on stock price   38.50%   38.50%            
Threshold percentage of stock price       130.00%            
Number of trading days | item       20            
Number of consecutive trading days | item       30            
Principal amount of the notes to be repurchased (as a percentage)       100.00%            
Liability component of convertible debt   $ 242,400   $ 242,400            
Equity component of convertible debt   45,100   45,100            
Debt issuance costs   7,700   7,700            
Debt Component of debt issuance costs   6,500   6,500            
Equity component of debt issuance costs   1,200   1,200            
Total interest expense   3,200 $ 3,100 9,400 $ 9,200          
Contractual interest expense   900 900 2,700 5,600          
Amortization of debt discount   2,000 1,900 5,800 2,700          
Amortization of debt issuance costs   300 $ 300 900 $ 900          
Unamortized discount   $ (29,281)   $ (29,281)     (35,133)      
Effective interest rate (as a percent)   4.50%   4.50%            
Unamortized debt issuance costs   $ (4,016)   $ (4,016)     (4,897)      
Stock price per share | $ / shares   $ 87.60   $ 87.60            
Components of long-term debt                    
Principal amount   $ 287,500   $ 287,500     287,500      
Unamortized discount   (29,281)   (29,281)     (35,133)      
Unamortized debt issuance costs   (4,016)   (4,016)     (4,897)      
Total   254,203   254,203     247,470      
Bank lines of credit                    
Borrowings                    
Amount outstanding under letters of credit   53,300   53,300            
Available credit facility   15,100   15,100            
Seven-year term loan due in fiscal 2020                    
Borrowings                    
Borrowings outstanding   $ 900   $ 900     $ 2,100      
Principal amount $ 11,100                  
Effective interest rate (as a percent) 2.20%                  
Term of loan 7 years                  
Seven-year term loan due in fiscal 2020 | LIBOR                    
Borrowings                    
Interest rate margin (as a percent) 1.25%