SECURITIES - Schedule of HTM securities in a Continuous Unrealized Loss Position Aggregated by Investment Category and Length of Time (Details) $ in Thousands |
Mar. 31, 2022
USD ($)
|
|---|---|
| Schedule of Held-to-maturity Securities [Line Items] | |
| Less than 12 months, Fair Value | $ 844,511 |
| Less than 12 months, Unrecognized Loss | (37,873) |
| 12 months or more, Fair Value | 36,240 |
| 12 months or more, Unrecognized Loss | (1,784) |
| Total, Fair Value | 880,751 |
| Total, Unrecognized Loss | (39,657) |
| Agency Mortgage-backed Securities | |
| Schedule of Held-to-maturity Securities [Line Items] | |
| Less than 12 months, Fair Value | 844,511 |
| Less than 12 months, Unrecognized Loss | (37,873) |
| 12 months or more, Fair Value | 36,240 |
| 12 months or more, Unrecognized Loss | (1,784) |
| Total, Fair Value | 880,751 |
| Total, Unrecognized Loss | $ (39,657) |