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v3.19.1

Long-Term Debt - Additional Information (Details) - USD ($) |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Jan. 29, 2019 | Mar. 31, 2019 | Mar. 31, 2018 | Feb. 07, 2019 | Dec. 31, 2018
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt |  | $ 817,940,000 |  |  | $ 456,900,000
Option indexed to issuer's equity, strike price (in dollars per share) |  | $ 114.92 |  |  |
Amortization of debt discount |  | $ 1,510,000 | $ 0 |  |
Loans Payable |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, gross |  | 265,000,000.0 |  |  |
Long-term debt |  | 263,174,000 |  |  | 144,064,000
Loans Payable | Amended and Restated Senior Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount |  |  |  | $ 265,000,000.0 |
Revolving line of credit |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt |  | 269,000,000.0 |  |  | 312,000,000
Remaining borrowing capacity |  | 313,000,000.0 |  |  |
Revolving line of credit | Amended and Restated Senior Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 585,000,000.0 |
Letter of Credit |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Letters of credit outstanding, amount |  | 3,000,000.0 |  |  |
Convertible Notes Payable |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Convertible, Gross Amount of Equity Component | $ (51,600,000) |  |  |  |
Equity component of convertible debt | 39,100,000 |  |  |  |
Convertible Notes Payable | 2.625% Convertible Notes Due 2024 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount | $ 345,000,000.0 |  |  |  |
Interest rate, stated percentage | 2.625% |  |  |  |
Interest rate, effective percentage | 6.14% |  |  |  |
Interest expense, debt |  | $ 1,600,000 |  |  |
Initial conversion rate | 11.2608 |  |  |  |
Conversion price (in dollars per share) | $ 88.80 |  |  |  |
Long-term Debt | Amended and Restated Senior Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate, effective percentage |  | 4.375% |  |  |
Mortgage notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt |  | $ 836,000 |  |  | $ 836,000
Mortgage notes | Largo, Florida Mortgage |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt |  | $ 800,000 |  |  |
London Interbank Offered Rate (LIBOR) | Long-term Debt | Amended and Restated Senior Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate |  | 1.875% |  |  |
Federal Funds Effective Swap Rate | Long-term Debt | Amended and Restated Senior Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate |  | 0.50% |  |  |
Eurodollar | Long-term Debt | Amended and Restated Senior Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate |  | 1.00% |  |  |
Call Option |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Hedge and warrant transactions, net cash paid | $ 21,000,000.0 |  |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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