XML 67 R55.htm IDEA: XBRL DOCUMENT v3.23.1
Derivative Accounting - Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2023
USD ($)
Mar. 31, 2023
USD ($)
Commodity Contracts    
Derivative Accounting    
Aggregate fair value of derivative instruments in a net liability position $ 108,202 $ 108,202
Additional collateral to counterparties for energy related non-derivative instrument contracts 76,000 76,000
Interest Rate Contract    
Derivative Accounting    
Derivative, Notional Amount 32,000 32,000
Derivative, Loss on Derivative   1,700
Gain (Loss) from Price Risk Management Activity   100
Loss on Derivative Instruments, Pretax   1,600
Amounts reclassified from accumulated other comprehensive income in next twelve months   100
Risk Management Assets | Credit Concentration Risk    
Derivative Accounting    
Aggregate fair value of derivative instruments in a net liability position $ 33,000 $ 33,000
Risk Management Assets | Credit Concentration Risk | One Counterparties    
Derivative Accounting    
Concentration risk 20.00%  
APS    
Derivative Accounting    
Percentage of unrealized gains and losses on certain derivatives deferred for future rate treatment 100.00% 100.00%