XML 70 R52.htm IDEA: XBRL DOCUMENT v3.22.1
Derivatives and Risk Management - Schedule of Collateral Outstanding Related to Derivative Instruments (Details) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
Derivative [Line Items]    
Balance sheet offsetting $ (12,670,000) $ 9,089,000
Commodity Contracts [Member]    
Derivative [Line Items]    
Cash collateral posted 4,615,000 30,567,000
Letters of credit outstanding 25,000,000 34,000,000
Balance sheet offsetting 12,670,000 9,089,000
Interest Rate Swap [Member]    
Derivative [Line Items]    
Cash collateral posted 0 0
Letters of credit outstanding 0 0
Liabilities with credit-risk-related contingent features 0 25,274,000
Additional collateral to post $ 0 $ 25,274,000