v3.21.2
FAIR VALUE MEASUREMENTS- Recorded Amounts of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale $ 891,648 $ 807,426
Investment in equity securities 540 338
Other    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 3,650 1,610
Agency mortgage-backed Securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 757,942 723,995
Beneficial interest - FHLMC securitizations    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 13,145 23,463
Corporate bonds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 116,911 58,358
Fair Value on Recurring Basis    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment in equity securities 540 338
Total assets at fair value on a recurring basis 892,188 807,764
Fair Value on Recurring Basis | Other    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 3,650 1,610
Fair Value on Recurring Basis | Agency mortgage-backed Securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 757,942 723,995
Fair Value on Recurring Basis | Beneficial interest - FHLMC securitizations    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 13,145 23,463
Fair Value on Recurring Basis | Corporate bonds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 116,911 58,358
Fair Value Measurement Level 1    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 497 503
Investment in equity securities 540 338
Fair Value Measurement Level 1 | Fair Value on Recurring Basis    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment in equity securities 540 338
Total assets at fair value on a recurring basis 1,037 841
Fair Value Measurement Level 1 | Fair Value on Recurring Basis | Other    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 497 503
Fair Value Measurement Level 2    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 878,006 783,460
Fair Value Measurement Level 2 | Fair Value on Recurring Basis    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total assets at fair value on a recurring basis 878,006 783,460
Fair Value Measurement Level 2 | Fair Value on Recurring Basis | Other    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 3,153 1,107
Fair Value Measurement Level 2 | Fair Value on Recurring Basis | Agency mortgage-backed Securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 757,942 723,995
Fair Value Measurement Level 2 | Fair Value on Recurring Basis | Corporate bonds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 116,911 58,358
Fair Value Measurement Level 3    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale 13,145 23,463
Fair Value Measurement Level 3 | Fair Value on Recurring Basis    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total assets at fair value on a recurring basis 13,145 23,463
Fair Value Measurement Level 3 | Fair Value on Recurring Basis | Beneficial interest - FHLMC securitizations    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Investment securities available for sale $ 13,145 $ 23,463