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Financial Instruments: Derivatives and Hedging (Details) - USD ($) $ in Thousands | Jun. 04, 2021 | Jun. 30, 2021 | Dec. 31, 2020
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Financial Instruments: Derivatives and Hedging |  |  |
Hedged amount of portion of the future LIBOR-based rate risk |  | $ 9,400 |
Amount estimated to be reclassified into earnings within next 12 months |  | 4,300 |
JPM Term Loan |  |  |
Financial Instruments: Derivatives and Hedging |  |  |
Hedged amount of portion of the future LIBOR-based rate risk |  | 100,000 |
2017 Interest Rate Swap | Cash flow hedges |  |  |
Financial Instruments: Derivatives and Hedging |  |  |
Notional Value |  | $ 400,000 |
Strike Rate (as a percent) |  | 1.12% |
2017 Interest Rate Swap | Cash flow hedges | Level 2 |  |  |
Financial Instruments: Derivatives and Hedging |  |  |
Fair Value |  | $ (992) | $ (2,947)
2019 JPM Interest Rate Swap |  |  |
Financial Instruments: Derivatives and Hedging |  |  |
Payment to terminate interest rate swap | $ 1,200 |  |
2019 JPM Interest Rate Swap | Cash flow hedges |  |  |
Financial Instruments: Derivatives and Hedging |  |  |
Notional Value |  | $ 100,000 |
Strike Rate (as a percent) |  | 2.44% |
2019 JPM Interest Rate Swap | Cash flow hedges | Level 2 |  |  |
Financial Instruments: Derivatives and Hedging |  |  |
Fair Value |  |  | (2,102)
2019 BMO Interest Rate Swap |  |  |
Financial Instruments: Derivatives and Hedging |  |  |
Payment to terminate interest rate swap | 600 |  |
2019 BMO Interest Rate Swap | Cash flow hedges |  |  |
Financial Instruments: Derivatives and Hedging |  |  |
Notional Value | $ 165,000 | $ 165,000 |
Strike Rate (as a percent) |  | 2.39% |
2019 BMO Interest Rate Swap | Cash flow hedges | Level 2 |  |  |
Financial Instruments: Derivatives and Hedging |  |  |
Fair Value |  | $ (8,433) | $ (12,262)

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