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v3.19.3.a.u2

Long Term Debt (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |
Amortization of Debt Discount | $ 8,302,000 | $ 0 | $ 0
Revolving Line of Credit [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt outstanding | 220,000,000 | 312,000,000 |
Line of credit facility, available borrowing capacity | 362,500,000 |  |
Revolving 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 |  |
Letters of Credit [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Letters of credit outstanding | 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 |  |
Effective Interest Rate (percent) | 6.14% |  |
Interest Expense, Debt | $ 8,400,000 |  |
Debt Instrument, Convertible, Gross Amount of Equity Component | $ 51,600,000 |  |
Debt Instrument, Interest Rate, Stated Percentage | 2.625% |  |
Option Indexed to Issuer's Equity, Strike Price | $ 114.92 |  |
Credit Agreement Expiration Trigger Requirement, Convertible Note Outstanding Balance | $ 150,000,000.0 |  |
Debt Instrument, Convertible, Carrying Amount of Equity Component | 39,100,000 |  |
Amortization of Debt Discount | $ 8,300,000 |  |
Debt Instrument, Convertible, Initial Conversion Rate | 11.2608 |  |
Debt Instrument, Convertible, Conversion Price | $ 88.80 |  |
Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Effective Interest Rate (percent) | 3.563% |  |
Term Loan Facility [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt, Gross | $ 255,100,000 |  |
Long-term debt outstanding | 253,535,000 | 144,064,000 |
Term Loan Facility [Member] | Amended and Restated Senior Credit Agreement [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Face Amount | 265,000,000.0 |  |
Mortgages Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt outstanding | $ 0 | $ 836,000 |
London Interbank Offered Rate (LIBOR) [Member] | Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (percent) | 1.75% |  |
Fed Funds Effective Rate Overnight Index Swap Rate [Member] | Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (percent) | 0.50% |  |
Eurodollar [Member] | Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (percent) | 1.00% |  |
Call Option [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Hedge and warrant transactions, net cash paid | $ 21,000,000.0 |  |

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