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Derivative Instruments and Hedging Activities - Effects on Statements of Income (Loss) and Consolidated Statements of Comprehensive Loss (Details) - Other expenses, net - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Derivatives Designated as Hedging Instruments | Interest rate swap contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of (Gain) Loss Recognized in Net Income | $ 522 | $ 306 | $ 1,045 | $ 405
Derivatives Not Designated as Hedging Instruments | Interest rate swap contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of (Gain) Loss Recognized in Net Income | 543 | (11) | (779) | (1)
Derivatives Not Designated as Hedging Instruments | Commodity swap contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of (Gain) Loss Recognized in Net Income | 1,250 | 95 | 1,498 | 47
Derivatives Not Designated as Hedging Instruments | Make-whole provisions |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of (Gain) Loss Recognized in Net Income | $ (205) | $ 655 | $ 506 | $ 470

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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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