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Debt - Additional Information (Details) |  |  | 1 Months Ended | 9 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 25, 2018 USD ($) | Jan. 20, 2017 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Jan. 01, 2019 | Jul. 01, 2018 | Apr. 01, 2018 | Jan. 01, 2018 | Dec. 31, 2017 USD ($) | Oct. 28, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount borrowed |  |  |  | $ 640,800,000 |  |  |  |  |  | $ 684,200,000 |
Write off of deferred debt issuance costs | $ 500,000 |  |  |  |  |  |  |  |  |  |
Deferred debt issuance costs |  |  |  | 7,200,000 |  |  |  |  |  | 5,800,000 |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |  |
2018 |  |  |  | 500,000 |  |  |  |  |  |  |
2019 |  |  |  | 4,500,000 |  |  |  |  |  |  |
2020 |  |  |  | 3,200,000 |  |  |  |  |  |  |
2021 |  |  |  | 3,900,000 |  |  |  |  |  |  |
2022 |  |  |  | 3,700,000 |  |  |  |  |  |  |
Thereafter |  |  |  | 640,000,000 |  |  |  |  |  |  |
Total |  |  |  | 655,800,000 |  |  |  |  |  |  |
Interest Expense [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amortization of debt issuance costs |  |  |  | 1,400,000 | $ 1,400,000 |  |  |  |  |  |
Corporate Bond Securities [Member] |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |  |
Fair market value |  |  |  | $ 359,600,000 |  |  |  |  |  |  |
New Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  | 4.01% | 3.12% |  |  |  |  |  |
6.875% Senior Unsecured Notes Due 2026 [Member] | Corporate Bond Securities [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount | $ 350,000,000.0 |  |  |  |  |  |  |  |  |  |
Amount borrowed |  |  |  | $ 342,200,000 |  |  |  |  |  | 0 |
Interest rate | 6.875% |  |  |  |  |  |  |  |  |  |
Effective rate |  |  |  | 7.245% |  |  |  |  |  |  |
Redemption price, percentage | 100.00% |  |  |  |  |  |  |  |  |  |
Amount to be redeemed, percentage | 35.00% |  |  |  |  |  |  |  |  |  |
Redemption price for equity offerings, percentage | 106.875% |  |  |  |  |  |  |  |  |  |
New Credit Facility and Bond Indenture [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred debt issuance costs | $ 3,400,000 |  |  |  |  |  |  |  |  |  |
Revolving Credit Agreement - U.S. dollar borrowings [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount borrowed | $ 96,000,000 |  |  | $ 91,000,000 |  |  |  |  |  | 344,500,000 |
Euro Revolver [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount borrowed |  |  |  | 3,500,000 |  |  |  |  |  | 26,400,000 |
Term Loan Facility [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument term | 7 years |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount | $ 200,000,000.0 |  |  |  |  |  |  |  |  |  |
Amortization rate |  |  |  |  |  |  |  |  |  |  | 1.00%
Amount borrowed |  |  |  | $ 200,000,000 |  |  |  |  |  | 0 |
Average interest rate on outstanding borrowings |  |  |  | 4.25% |  |  |  |  |  |  |
Second Amended and Restated Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum borrowings under credit facility |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000
EBITDA ratio |  | 4.25 |  |  |  |  | 3.50 | 3.75 | 4.00 |  |
Term Loan A-1 [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  | $ 100,000,000
Amount borrowed |  |  |  | $ 0 |  |  |  |  |  | 60,000,000 |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |  |
Amortization rate - A-1 - first 2 years |  |  |  |  |  |  |  |  |  |  | 5.00%
Amortization rate - A-1 - final 3 years |  |  |  |  |  |  |  |  |  |  | 10.00%
Prepayment of amortization for term loan |  |  | $ 40,000,000 |  |  |  |  |  |  |  |
Term Loan A-2 [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  | $ 250,000,000
Amount borrowed |  |  |  | $ 0 |  |  |  |  |  | $ 244,400,000 |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |  |
Amortization rate - A-2 |  |  |  |  |  |  |  |  |  |  | 1.00%
First Amendment to Second Amended and Restated Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred debt issuance costs |  | $ 600,000 |  |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | New Credit Facility and Bond Indenture [Member] |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Revolving Credit Agreement - U.S. dollar borrowings [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Average interest rate on outstanding borrowings |  |  |  | 4.00% |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Euro Revolver [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Average interest rate on outstanding borrowings |  |  |  | 1.75% |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Second Amended and Restated Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum borrowings under credit facility |  |  |  |  |  |  |  |  |  |  | $ 650,000,000
London Interbank Offered Rate (LIBOR) [Member] | Term Loan A-1 [Member] | Term Loan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 1.25% |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Term Loan A-1 [Member] | Term Loan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 2.50% |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Term Loan A-2 [Member] | Term Loan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 1.50% |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Term Loan A-2 [Member] | Term Loan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 2.75% |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | New Credit Facility and Bond Indenture [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 1.75% |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Second Amended and Restated Credit Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 1.25% |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Second Amended and Restated Credit Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 2.50% |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Term Loan Facility [Member] | New Credit Facility and Bond Indenture [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 2.00% |  |  |  |  |  |  |
Base Rate [Member] | Term Loan A-1 [Member] | Term Loan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 0.25% |  |  |  |  |  |  |
Base Rate [Member] | Term Loan A-1 [Member] | Term Loan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 1.50% |  |  |  |  |  |  |
Base Rate [Member] | Term Loan A-2 [Member] | Term Loan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 0.50% |  |  |  |  |  |  |
Base Rate [Member] | Term Loan A-2 [Member] | Term Loan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 1.75% |  |  |  |  |  |  |
Base Rate [Member] | Revolving Credit Facility [Member] | New Credit Facility and Bond Indenture [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 0.75% |  |  |  |  |  |  |
Base Rate [Member] | Revolving Credit Facility [Member] | Second Amended and Restated Credit Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 0.25% |  |  |  |  |  |  |
Base Rate [Member] | Revolving Credit Facility [Member] | Second Amended and Restated Credit Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 1.50% |  |  |  |  |  |  |
Base Rate [Member] | Term Loan Facility [Member] | New Credit Facility and Bond Indenture [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  | 1.00% |  |  |  |  |  |  |
Forecast [Member] | Second Amended and Restated Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
EBITDA ratio |  |  |  |  |  | 3.00 |  |  |  |  |

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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=109223946&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=115205541&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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- 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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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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- Definition Percentage of principal amount of debt redeemed. + References No definition available. + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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