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Derivatives - Fair Value Measurements on Recurring Basis (Details) $ in Thousands | Dec. 31, 2017 USD ($)
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2015 Swaps |
Fair Value On Recurring Basis [Line Items] |
Hedging Instrument, Asset, Fair Value | $ 3,860
2015 Swaps | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |
Fair Value On Recurring Basis [Line Items] |
Hedging Instrument, Asset, Fair Value | 0
2015 Swaps | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |
Fair Value On Recurring Basis [Line Items] |
Hedging Instrument, Asset, Fair Value | 3,860
2015 Swaps | Fair Value, Measurements, Recurring | Unobservable Inputs (Level 3) |
Fair Value On Recurring Basis [Line Items] |
Hedging Instrument, Asset, Fair Value | 0
2014 Swaps |
Fair Value On Recurring Basis [Line Items] |
Hedging Instrument, Liability, Fair Value | (1,474)
2014 Swaps | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |
Fair Value On Recurring Basis [Line Items] |
Hedging Instrument, Liability, Fair Value | 0
2014 Swaps | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |
Fair Value On Recurring Basis [Line Items] |
Hedging Instrument, Liability, Fair Value | (1,474)
2014 Swaps | Fair Value, Measurements, Recurring | Unobservable Inputs (Level 3) |
Fair Value On Recurring Basis [Line Items] |
Hedging Instrument, Liability, Fair Value | $ 0

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- Definition Fair value of all asset derivatives designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
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- Definition Fair value of all liability derivatives designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
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