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v3.22.2.2

Other Borrowings and Subordinated Notes and Debentures - Debt Components (Details) - USD ($) $ in Thousands | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2018 | Sep. 30, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |  |
Total other borrowings and subordinated debt |  | $ 1,330,723 | $ 1,722,104
FHLB advances, net of discount, due 2022 to 2034, 1.49% to 5.53% secured by real estate loans |  |  |
Debt Instrument [Line Items] |  |  |
Total other borrowings and subordinated debt |  | $ 934,147 | 1,306,143
FHLB advances, net of discount, due 2022 to 2034, 1.49% to 5.53% secured by real estate loans | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Fixed rate (as percent) |  | 1.49% |
FHLB advances, net of discount, due 2022 to 2034, 1.49% to 5.53% secured by real estate loans | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Fixed rate (as percent) |  | 5.53% |
Other long-term debt |  |  |
Debt Instrument [Line Items] |  |  |
Total other borrowings and subordinated debt |  | $ 30,625 | 31,830
Total other borrowings |  |  |
Debt Instrument [Line Items] |  |  |
Total other borrowings and subordinated debt |  | 964,772 | 1,337,973
Subordinated Notes |  |  |
Debt Instrument [Line Items] |  |  |
Fixed rate (as percent) | 5.00% |  |
Subordinated Notes | London Interbank Offered Rate (LIBOR) |  |  |
Debt Instrument [Line Items] |  |  |
Floating rate (as percent) | 2.15% |  |
Subordinated Notes | Subordinated notes payable, due 4/1/2028, fixed-to-floating rate (fixed rate of 5.00% through 3/31/2023, floating rate of 2.15% above the three month LIBOR rate, reset quarterly) |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 330,000 | 330,000
Fixed rate (as percent) |  | 5.00% |
Subordinated Notes | Subordinated notes payable, due 4/1/2028, fixed-to-floating rate (fixed rate of 5.00% through 3/31/2023, floating rate of 2.15% above the three month LIBOR rate, reset quarterly) | London Interbank Offered Rate (LIBOR) |  |  |
Debt Instrument [Line Items] |  |  |
Floating rate (as percent) |  | 2.15% |
Subordinated Notes | Subordinated notes payable, net of premium adjustments, due 7/31/2030, fixed-to-floating rate (fixed rate of 6.00% through 7/30/2025, floating rate of 5.92% above the three month SOFR rate, reset quarterly) |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 37,313 | 0
Fixed rate (as percent) |  | 6.00% |
Subordinated Notes | Subordinated notes payable, net of premium adjustments, due 7/31/2030, fixed-to-floating rate (fixed rate of 6.00% through 7/30/2025, floating rate of 5.92% above the three month SOFR rate, reset quarterly) | Spirit of Texas Bancshares, Inc. |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 37,400 |
Fixed rate (as percent) |  | 6.00% |
Subordinated Notes | Subordinated notes payable, net of premium adjustments, due 7/31/2030, fixed-to-floating rate (fixed rate of 6.00% through 7/30/2025, floating rate of 5.92% above the three month SOFR rate, reset quarterly) | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |
Debt Instrument [Line Items] |  |  |
Floating rate (as percent) |  | 5.92% |
Subordinated Notes | Subordinated notes payable, net of premium adjustments, due 7/31/2030, fixed-to-floating rate (fixed rate of 6.00% through 7/30/2025, floating rate of 5.92% above the three month SOFR rate, reset quarterly) | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Spirit of Texas Bancshares, Inc. |  |  |
Debt Instrument [Line Items] |  |  |
Floating rate (as percent) |  | 592.00% |
Subordinated Notes | Trust preferred securities, due 9/15/2037, floating rate of 1.37% above the three month LIBOR rate, reset quarterly |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 0 | 10,310
Subordinated Notes | Trust preferred securities, due 9/15/2037, floating rate of 1.37% above the three month LIBOR rate, reset quarterly | London Interbank Offered Rate (LIBOR) |  |  |
Debt Instrument [Line Items] |  |  |
Floating rate (as percent) |  | 1.37% |
Subordinated Notes | Trust preferred securities, due 6/6/2037, floating rate of 1.57% above the three month LIBOR rate, reset quarterly, callable without penalty |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 0 | 10,310
Subordinated Notes | Trust preferred securities, due 6/6/2037, floating rate of 1.57% above the three month LIBOR rate, reset quarterly, callable without penalty | London Interbank Offered Rate (LIBOR) |  |  |
Debt Instrument [Line Items] |  |  |
Floating rate (as percent) |  | 1.57% |
Subordinated Notes | Trust preferred securities, due 12/15/2035, floating rate of 1.45% above the three month LIBOR rate, reset quarterly, callable without penalty |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 0 | 6,702
Subordinated Notes | Trust preferred securities, due 12/15/2035, floating rate of 1.45% above the three month LIBOR rate, reset quarterly, callable without penalty | London Interbank Offered Rate (LIBOR) |  |  |
Debt Instrument [Line Items] |  |  |
Floating rate (as percent) |  | 1.45% |
Subordinated Notes | Trust preferred securities, net of discount, due 6/15/2037, floating rate of 1.85% above the three month LIBOR rate, reset quarterly, callable without penalty |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 0 | 25,329
Subordinated Notes | Trust preferred securities, net of discount, due 6/15/2037, floating rate of 1.85% above the three month LIBOR rate, reset quarterly, callable without penalty | London Interbank Offered Rate (LIBOR) |  |  |
Debt Instrument [Line Items] |  |  |
Floating rate (as percent) |  | 1.85% |
Subordinated Notes | Trust preferred securities, net of discount, due 12/15/2036, floating rate of 1.85% above the three month LIBOR rate, reset quarterly, callable without penalty |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, gross |  | $ 0 | 3,041
Subordinated Notes | Trust preferred securities, net of discount, due 12/15/2036, floating rate of 1.85% above the three month LIBOR rate, reset quarterly, callable without penalty | London Interbank Offered Rate (LIBOR) |  |  |
Debt Instrument [Line Items] |  |  |
Floating rate (as percent) |  | 1.85% |
Total subordinated notes and debentures |  |  |
Debt Instrument [Line Items] |  |  |
Total other borrowings and subordinated debt |  | $ 365,951 | 384,131
Unamortized debt issuance costs |  | $ (1,362) | $ (1,561)

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