Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Summary of Active Derivative Instruments (Details)

v3.21.2
Derivative Instruments and Hedging Activities - Summary of Active Derivative Instruments (Details)
 6 Months Ended
Jun. 30, 2021
USD ($)
MMBTU
$ / MMBTU
Designated | Interest Rate Swap October 2029  
Derivative [Line Items]  
Term of contract, years 11 years
Fixed interest rate, percentage 5.77%
Initial Notional Amount ($) $ 9,200,000
Designated | Interest Rate Swap June 2033  
Derivative [Line Items]  
Term of contract, years 15 years
Fixed interest rate, percentage 5.24%
Initial Notional Amount ($) $ 10,000,000
Designated | Interest Rate Swap - December 2027  
Derivative [Line Items]  
Term of contract, years 10 years
Fixed interest rate, percentage 4.74%
Initial Notional Amount ($) $ 14,100,000
Designated | Interest Rate Swap - December 2038  
Derivative [Line Items]  
Term of contract, years 15 years
Fixed interest rate, percentage 3.26%
Initial Notional Amount ($) $ 14,084,000
Designated | Interest Rate Swap - February 2023  
Derivative [Line Items]  
Term of contract, years 7 years
Fixed interest rate, percentage 2.19%
Initial Notional Amount ($) $ 20,746,000
Designated | Interest Rate Swap - June 2028  
Derivative [Line Items]  
Term of contract, years 8 years
Fixed interest rate, percentage 3.70%
Initial Notional Amount ($) $ 14,643,000
Designated | Interest Rate Swap - June 2028  
Derivative [Line Items]  
Term of contract, years 8 years
Fixed interest rate, percentage 3.70%
Initial Notional Amount ($) $ 10,734,000
Designated | Interest Rate Swap - March 2024  
Derivative [Line Items]  
Term of contract, years 15 years 6 months
Fixed interest rate, percentage 5.40%
Initial Notional Amount ($) $ 13,081,000
Not Designated | Interest Rate Swap March 2033  
Derivative [Line Items]  
Term of contract, years 13 years
Fixed interest rate, percentage 0.93%
Initial Notional Amount ($) $ 9,505,000
Not Designated | Interest Rate Swap March 2033  
Derivative [Line Items]  
Term of contract, years 13 years
Fixed interest rate, percentage 0.93%
Initial Notional Amount ($) $ 6,968,000
Not Designated | Interest Rate Swap - September 2023  
Derivative [Line Items]  
Term of contract, years 2 years 9 months
Fixed interest rate, percentage 0.41%
Initial Notional Amount ($) $ 26,250,000
Not Designated | Commodity Contract - June 2024  
Derivative [Line Items]  
Term of contract, years 3 years 6 months
Active commodity swap, price (in usd per unit) | $ / MMBTU 2.65
Nonmonetary notional amount (in MMBtus) | MMBTU 3,296,160
Not Designated | Make-whole Provisions December 2038 | Other liabilities  
Derivative [Line Items]  
Liability derivatives, fair value $ 545,000
Not Designated | Make-whole Provisions April 2031 | Other liabilities  
Derivative [Line Items]  
Liability derivatives, fair value 89,000
Not Designated | Make-whole Provisions February 2034 | Other liabilities  
Derivative [Line Items]  
Liability derivatives, fair value 109,000
Not Designated | Make-whole Provision December 2027 | Other liabilities  
Derivative [Line Items]  
Liability derivatives, fair value 90,000
Not Designated | Make-whole Provision May 2028 | Other liabilities  
Derivative [Line Items]  
Liability derivatives, fair value 37,000
Not Designated | Make-whole Provision April 2045 | Other liabilities  
Derivative [Line Items]  
Liability derivatives, fair value $ 377,000