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Derivative Instruments and Hedging Activity (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2016 | Jul. 31, 2014 | Sep. 30, 2013 | Apr. 30, 2012 | Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Assets Needed for Immediate Settlement, Aggregate Fair Value | $ 0.6 |  |  |  |  | $ 0.6
Derivative, Net Liability Position, Aggregate Fair Value | 0.6 |  |  |  |  | 0.6
Interest and Debt Expense |  |  |  |  |  | 0.8
Interest Rate Swap Agreement One [Member] |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Derivative, Notional Amount | 18.5 |  |  |  | $ 22.3 | 18.5
Derivative, Inception Date |  |  |  |  | Jul. 01, 2013 |
Derivative, Maturity Date |  |  |  |  | May 01, 2019 |
Description of Interest Rate Cash Flow Hedge Activities |  |  |  |  | the Company receives from the counterparty interest on the notional amount based on 1 month LIBOR and pays to the counterparty a fixed rate of 1.92%. |
Fixed interest rate |  |  |  |  | 1.92% |
Derivative, Amount of Hedged Item |  |  |  |  | $ 22.3 |
Fair Value, Net Asset (Liability) | 0.0 |  |  |  |  | 0.0
Interest Rate Swap Agreement Three [Member] |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Derivative, Notional Amount |  |  |  | $ 35.0 |  |
Derivative, Inception Date |  |  |  | Oct. 03, 2013 |  |
Derivative, Maturity Date |  |  |  | Sep. 29, 2020 |  |
Description of Interest Rate Cash Flow Hedge Activities |  |  |  | the Company receives from the counterparty interest on the notional amount based on 1 month LIBOR and pays to the counterparty a fixed rate of 2.20%. |  |
Fixed interest rate |  |  |  | 2.20% |  |
Derivative, Amount of Hedged Item |  |  |  | $ 35.0 |  |
Fair Value, Net Asset (Liability) | 0.2 |  |  |  |  | 0.2
Interest Rate Swap Agreement Four [Member] |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Derivative, Notional Amount |  |  | $ 65.0 |  |  |
Derivative, Inception Date |  |  | Jul. 21, 2014 |  |  |
Derivative, Maturity Date |  |  | Jul. 21, 2021 |  |  |
Description of Interest Rate Cash Flow Hedge Activities |  |  | the Company receives from the counterparty interest on the notional amount based on 1 month LIBOR and pays to the counterparty a fixed rate of 2.09%. |  |  |
Fixed interest rate |  |  | 2.09% |  |  |
Derivative, Amount of Hedged Item |  |  | $ 65.0 |  |  |
Fair Value, Net Asset (Liability) | 0.6 |  |  |  |  | 0.6
Interest Rate Swap Agreement Five [Member] |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Derivative, Notional Amount |  | $ 40.0 |  |  |  |
Derivative, Inception Date |  | Aug. 01, 2016 |  |  |  |
Derivative, Maturity Date |  | Jul. 01, 2023 |  |  |  |
Description of Interest Rate Cash Flow Hedge Activities |  | the Company receives from the counterparty interest on the notional amount based on 1 month LIBOR and pays to the counterparty a fixed rate of 1.40%. |  |  |  |
Fixed interest rate |  | 1.40% |  |  |  |
Derivative, Amount of Hedged Item |  | $ 40.0 |  |  |  |
Fair Value, Net Asset (Liability) | 1.8 |  |  |  |  | 1.8
Interest Rate Swap Agreement Six [Member] |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Derivative, Notional Amount | $ 100.0 |  |  |  |  | $ 100.0
Derivative, Inception Date | Dec. 27, 2018 |  |  |  |  |
Derivative, Maturity Date | Jan. 15, 2026 |  |  |  |  |
Description of Interest Rate Cash Flow Hedge Activities | the Company receives from the counterparty interest on the notional amount based on 1 month LIBOR and pays to the counterparty a fixed rate of 2.66%. |  |  |  |  |
Fixed interest rate | 2.66% |  |  |  |  | 2.66%
Derivative, Amount of Hedged Item | $ 100.0 |  |  |  |  | $ 100.0
Fair Value, Net Asset (Liability) | $ (1.1) |  |  |  |  | $ (1.1)

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition The aggregate fair value of assets needed to immediately settle the derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959 + Details
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- Definition Amount of hedged item in hedging relationship. Excludes hedged asset or liability. + References No definition available. + Details
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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Definition Date the entity entered into the derivative contract, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959 + Details
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- Definition General discussion of the entity's interest rate cash flow hedge activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41620-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579240-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41641-113959 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 + Details
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