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Long Term Debt Additional Information (Details) - USD ($)
3 Months Ended
Apr. 17, 2020
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Debt Instrument [Line Items]        
Amortization of debt discount   $ 2,264,000 $ 1,510,000  
Term Loan Facility [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross   251,800,000    
Long-term Debt   250,322,000   $ 253,535,000
Term Loan Facility [Member] | Amended and Restated Senior Credit Agreement [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Face Amount   265,000,000.0    
Line of Credit [Member]        
Debt Instrument [Line Items]        
Long-term Debt   238,000,000   $ 220,000,000
Line of Credit Facility, Remaining Borrowing Capacity   344,500,000    
Line of Credit [Member] | Amended and Restated Senior Credit Agreement [Member]        
Debt Instrument [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity   585,000,000.0    
Letter of Credit [Member]        
Debt Instrument [Line Items]        
Letters of Credit Outstanding, Amount   2,500,000    
Convertible Notes Payable [Member] | 2.625 Percent Convertible Notes Due 2024 [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Face Amount   345,000,000.0    
Debt Instrument, Convertible, Carrying Amount of Equity Component   39,100,000    
Amortization of debt discount   $ 2,300,000 1,500,000  
Interest rate, stated percentage   2.625%    
Credit Agreement Expiration Trigger Requirement, Convertible Note Outstanding Balance   $ 150,000,000.0    
Debt Instrument, Interest Rate, Effective Percentage   6.14%    
Interest Expense, Debt   $ 2,300,000 $ 1,600,000  
Debt Instrument, Convertible, Gross Amount of Equity Component   $ 51,600,000    
Debt Instrument, Convertible, Initial Conversion Rate   11.2608    
Conversion price (in dollars per share)   $ 88.80    
Option indexed to issuer's equity, strike price (in dollars per share)   $ 114.92    
Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Effective Percentage   2.50%    
London Interbank Offered Rate (LIBOR) [Member] | Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Basis Spread on Variable Rate   1.50%    
Fed Funds Effective Rate Overnight Index Swap Rate [Member] | Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Basis Spread on Variable Rate   0.50%    
Eurodollar [Member] | Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Basis Spread on Variable Rate   1.00%    
Call Option [Member]        
Debt Instrument [Line Items]        
Hedge and warrant transactions, net cash paid   $ 21,000,000.0    
Subsequent Event [Member] | Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member]        
Debt Instrument [Line Items]        
Line of Credit Facility, Commitment Fee Percentage 0.50%      
Subsequent Event [Member] | London Interbank Offered Rate (LIBOR) [Member] | Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 2.50%      
Subsequent Event [Member] | Eurodollar [Member] | Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 3.50%