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Derivative Financial Instruments - Derivative Financial Instruments Narrative (Details) | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) counterparty contracts | Dec. 31, 2019 USD ($) counterparty | Mar. 31, 2020 USD ($) | Feb. 28, 2020 USD ($) | Dec. 31, 2018 USD ($) | Apr. 30, 2018 USD ($) | Dec. 31, 2017 USD ($) | Nov. 30, 2015 | Oct. 31, 2015
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Accumulated other comprehensive income (loss), net of tax | $ (138,526,000) | $ (204,672,000) |  |  |  |  |  |  |
Long-term debt | 936,094,000 |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 1.38% |  |  |
Secured Debt [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt | 936,094,000 | 950,156,000 |  |  |  |  |  |  |
Accumulated Other Comprehensive Income, Net Unrealized Gain (Loss) on Nonderivative Instruments [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Accumulated other comprehensive income (loss), net of tax | $ (14,380,000) | $ (14,380,000) |  |  | $ (14,380,000) |  | $ (14,380,000) |  |
Number of Counterparties [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Number of counterparties | counterparty | 4 | 5 |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt | $ 536,100,000 |  |  |  |  |  |  |  |
Interest Rate Swap [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Number of interest rate derivatives held |  |  | 1 |  |  |  |  |  | 1
Derivative, Notional Amount | $ 214,000,000 |  | $ 240,000,000 |  |  |  |  |  |
Derivative, Fixed Interest Rate | 1.42% |  | 0.617% |  |  |  |  |  |
Foreign currency cash flow hedge gain (loss) to be reclassified during next 12 months |  |  | $ 1,000,000.0 |  |  |  |  |  |
Interest Rate Cap [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Number of interest rate derivatives held |  |  |  |  |  |  |  | 3 |
Derivative, cap interest rate | 2.00% |  |  |  |  |  |  |  |
Derivative, Notional Amount | $ 100,000,000 |  |  |  |  |  |  |  |
Derivative Purchase Price | 1,700,000 |  |  |  |  |  |  |  |
Currency Swap [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Number of interest rate derivatives held |  |  |  |  |  | 1 |  |  |
Derivative, Notional Amount |  |  |  |  |  | $ 56,000,000.0 |  |  |
Foreign currency cash flow hedge gain (loss) to be reclassified during next 12 months | $ 500,000 |  |  |  |  |  |  |  |
Forward Contracts [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Number of instruments held | contracts | 39 |  |  |  |  |  |  |  |
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | $ 121,000 |  |  |  |  |  |  |  |
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | 26,400,000 |  |  |  |  |  |  |  |
Foreign Exchange Option [Member] |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | 0 |  |  | $ 96,000,000 |  |  |  |  |
Derivative Purchase Price | $ 1,200,000 |  |  |  |  |  |  |  |

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)(a)(4)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(a)(3)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 65 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 65 -Paragraph 2 -Subparagraph (g)(2)(ii) -URI http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e681-108580 + Details
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