Derivatives - Fair Value Measurements on Recurring Basis (Details) $ in Thousands	Sep. 30, 2020 USD ($)
2014 Swaps
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	$ (1,416)
2014 Swaps | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	0
2014 Swaps | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	(1,416)
2014 Swaps | Fair Value, Measurements, Recurring | Unobservable Inputs (Level 3)
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	0
2015 Swaps
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	(8,420)
2015 Swaps | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	0
2015 Swaps | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	(8,420)
2015 Swaps | Fair Value, Measurements, Recurring | Unobservable Inputs (Level 3)
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	0
2021 Swaps
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	(7,035)
2021 Swaps | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	0
2021 Swaps | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	(7,035)
2021 Swaps | Fair Value, Measurements, Recurring | Unobservable Inputs (Level 3)
Derivatives, Fair Value [Line Items]
Hedging Instrument, Liability, Fair Value	0
2020 Swap
Derivatives, Fair Value [Line Items]
Other Derivatives Not Designated as Hedging Instruments Liabilities at Fair Value	(201)
2020 Swap | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Derivatives, Fair Value [Line Items]
Other Derivatives Not Designated as Hedging Instruments Liabilities at Fair Value	0
2020 Swap | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Derivatives, Fair Value [Line Items]
Other Derivatives Not Designated as Hedging Instruments Liabilities at Fair Value	(201)
2020 Swap | Fair Value, Measurements, Recurring | Unobservable Inputs (Level 3)
Derivatives, Fair Value [Line Items]
Other Derivatives Not Designated as Hedging Instruments Liabilities at Fair Value	$ 0