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v3.20.1

Debt - Additional Information (Details) |  | 3 Months Ended |
--- | --- | --- | ---
Sep. 25, 2018 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |
Deferred debt issuance costs |  | $ (5,600,000) |  | $ (5,900,000)
Interest expense |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Amortization of debt issuance costs |  | 300,000 | $ 300,000 |
Senior unsecured notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fair market value |  | $ 348,700,000 |  | $ 378,300,000
New Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowings under credit facility | $ 700,000,000.0 |  |  |
EBITDA ratio | 4.50 |  |  |
Interest coverage ratio | 3.00 |  |  |
Effective interest rate on debt facilities (percentage) |  | 3.84% | 4.42% |
6.875% Senior Unsecured Notes Due 2026 | Senior unsecured notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, face amount | $ 350,000,000.0 |  |  |
Interest rate (percent) | 6.875% | 6.875% |  |
Redemption price (percentage) | 100.00% |  |  |
Amount to be redeemed (percentage) | 35.00% |  |  |
Redemption price for equity offerings (percentage) | 106.875% |  |  |
Effective rate (percentage) |  | 7.248% |  |
Term loan facility | Term loan facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument term | 7 years |  |  |
Debt instrument, face amount | $ 200,000,000.0 |  |  |
Amortization rate (percent) |  | 1.00% |  |
Average interest rate on outstanding borrowings (percentage) |  | 2.75% |  |
Revolving Credit Facility | New Credit Facility and Bond Indenture |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowings under credit facility | $ 400,000,000.0 |  |  |
Debt instrument term | 5 years |  |  |
Revolving line of credit | $ 500,000,000.0 |  |  |
Revolving Credit Facility | Revolving credit facility - U.S. dollar borrowings |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Average interest rate on outstanding borrowings (percentage) |  | 2.50% |  |
LIBOR | Revolving Credit Facility | New Credit Facility and Bond Indenture |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable interest rate (percent) |  | 1.50% |  |
LIBOR | Term loan facility | New Credit Facility and Bond Indenture |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable interest rate (percent) |  | 1.75% |  |
Base Rate | Revolving Credit Facility | New Credit Facility and Bond Indenture |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable interest rate (percent) |  | 0.75% |  |
Base Rate | Term loan facility | New Credit Facility and Bond Indenture |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable interest rate (percent) |  | 1.00% |  |

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- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 + Details
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