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STOCKHOLDERS' EQUITY (Tables) | 9 Months Ended
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Sep. 30, 2023
Equity [Abstract] |
Change in Accumulated Other Comprehensive Income | The change in AOCI for the three and nine months ended September 30, 2023 is summarized as follows, net of tax (dollars in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Unrealized Gains |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
​ | ​ | ​ | ​ | ​ | (Losses) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | for AFS | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​
​ | ​ | (Losses) | ​ | Securities | ​ | Change in Fair | ​ | Gains | ​ | ​ | ​
​ | ​ | on AFS | ​ | Transferred to | ​ | Value of Cash | ​ | (Losses) on | ​ | ​ | ​
​ | ​ | Securities | ​ | HTM | ​ | Flow Hedge | ​ | BOLI | ​ | Total
AOCI (loss) – June 30, 2023 | ​ | $ | (353,811) | ​ | $ | 12 | ​ | $ | (57,221) | ​ | $ | 153 | ​ | $ | (410,867)
Other comprehensive (loss) income: | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  |
Other comprehensive loss before reclassification | ​ |  | (79,193) | ​ | ​ | — | ​ | ​ | (9,581) | ​ | ​ | — | ​ |  | (88,774)
Amounts reclassified from AOCI into earnings | ​ |  | 21,799 | ​ | ​ | (2) | ​ | ​ | — | ​ | ​ | (62) | ​ |  | 21,735
Net current period other comprehensive loss | ​ |  | (57,394) | ​ |  | (2) | ​ |  | (9,581) | ​ |  | (62) | ​ |  | (67,039)
AOCI (loss) – September 30, 2023 | ​ | $ | (411,205) | ​ | $ | 10 | ​ | $ | (66,802) | ​ | $ | 91 | ​ | $ | (477,906)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Unrealized Gains |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
​ | ​ | ​ | ​ | ​ | (Losses) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | for AFS | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​
​ | ​ | Gains (Losses) | ​ | Securities | ​ | Change in Fair | ​ | Gains | ​ | ​ | ​
​ | ​ | on AFS | ​ | Transferred to | ​ | Value of Cash | ​ | (Losses) on | ​ | ​ | ​
​ | ​ | Securities | ​ | HTM | ​ | Flow Hedge | ​ | BOLI | ​ | Total
AOCI (loss) – December 31, 2022 | ​ | $ | (363,919) | ​ | $ | 17 | ​ | $ | (54,610) | ​ | $ | 226 | ​ | $ | (418,286)
Other comprehensive income (loss): | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  |
Other comprehensive (loss) income before reclassification | ​ |  | (79,669) | ​ | ​ | — | ​ | ​ | (12,192) | ​ | ​ | 10 | ​ |  | (91,851)
Amounts reclassified from AOCI into earnings | ​ |  | 32,383 | ​ | ​ | (7) | ​ | ​ | — | ​ | ​ | (145) | ​ |  | 32,231
Net current period other comprehensive loss | ​ |  | (47,286) | ​ |  | (7) | ​ |  | (12,192) | ​ |  | (135) | ​ |  | (59,620)
AOCI (loss) – September 30, 2023 | ​ | $ | (411,205) | ​ | $ | 10 | ​ | $ | (66,802) | ​ | $ | 91 | ​ | $ | (477,906)
​ ​ ​ ​ The change in AOCI for the three and nine months ended September 30, 2022 is summarized as follows, net of tax (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Unrealized Gain |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
​ | ​ | ​ | ​ | ​ | (Losses) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | for AFS | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​
​ | ​ | Gains (Losses) | ​ | Securities | ​ | Change in Fair | ​ | Gains | ​ | ​ | ​
​ | ​ | on AFS | ​ | Transferred to | ​ | Value of Cash | ​ | (Losses) | ​ | ​ | ​
​ | ​ | Securities | ​ | HTM | ​ | Flow Hedge | ​ | on BOLI | ​ | Total
AOCI (loss) – June 30, 2022 | ​ | $ | (277,577) | ​ | $ | 25 | ​ | $ | (36,452) | ​ | $ | (2,279) | ​ | $ | (316,283)
Other comprehensive (loss) income: | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive loss before reclassification | ​ |  | (121,841) | ​ | ​ | — | ​ | ​ | (24,142) | ​ | ​ | — | ​ | ​ | (145,983)
Amounts reclassified from AOCI into earnings | ​ |  | — | ​ | ​ | (4) | ​ | ​ | — | ​ | ​ | 151 | ​ | ​ | 147
Net current period other comprehensive (loss) income | ​ |  | (121,841) | ​ |  | (4) | ​ |  | (24,142) | ​ |  | 151 | ​ |  | (145,836)
AOCI (loss) – September 30, 2022 | ​ | $ | (399,418) | ​ | $ | 21 | ​ | $ | (60,594) | ​ | $ | (2,128) | ​ | $ | (462,119)
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Unrealized Gain |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
​ | ​ | ​ | ​ | ​ | (Losses) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | for AFS | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​
​ | ​ | Gains (Losses) | ​ | Securities | ​ | Change in Fair | ​ | Gains | ​ | ​ | ​
​ | ​ | on AFS | ​ | Transferred to | ​ | Value of Cash | ​ | (Losses) | ​ | ​ | ​
​ | ​ | Securities | ​ | HTM | ​ | Flow Hedge | ​ | on BOLI | ​ | Total
AOCI – December 31, 2021 | ​ | $ | 22,763 | ​ | $ | 35 | ​ | $ | (1,567) | ​ | $ | (2,596) | ​ | $ | 18,635
Other comprehensive (loss) income: | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive loss before reclassification | ​ |  | (422,183) | ​ | ​ | — | ​ | ​ | (59,027) | ​ | ​ | — | ​ | ​ | (481,210)
Amounts reclassified from AOCI into earnings | ​ |  | 2 | ​ | ​ | (14) | ​ | ​ | — | ​ | ​ | 468 | ​ | ​ | 456
Net current period other comprehensive (loss) income | ​ |  | (422,181) | ​ |  | (14) | ​ |  | (59,027) | ​ |  | 468 | ​ |  | (480,754)
AOCI (loss) – September 30, 2022 | ​ | $ | (399,418) | ​ | $ | 21 | ​ | $ | (60,594) | ​ | $ | (2,128) | ​ | $ | (462,119)
​

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