Derivative Instruments - Narrative (Details) $ in Thousands	Sep. 30, 2021 USD ($)
Derivatives, Fair Value [Line Items]
Maximum notional contract amount as percent of total assets	10.00%
Risk Participation Agreements
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 31,400
Energy Related Derivative
Derivatives, Fair Value [Line Items]
Derivative assets, notional amount	18,200
Derivative liability, notional amount	18,200
Derivative, net fair value	$ 265