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DERIVATIVES - (Schedule of Cash Flow Hedges Included in Financial Statements) (Details) - Interest Rate Swap [Member] - USD ($)
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Derivative [Line Items]      
Notional Amount   $ 15,000,000.0  
Designated as Hedging Instrument [Member]      
Derivative [Line Items]      
Notional Amount $ 230,000,000.0   $ 270,000,000.0
Fair Value (5,267,000)   (9,616,000)
Designated as Hedging Instrument [Member] | Other Liabilities [Member]      
Derivative [Line Items]      
Notional Amount 230,000,000   270,000,000
Fair Value $ (5,267,000)   $ (9,616,000)