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Loans and Allowance for Credit Losses - Allowance for Credit Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | $ 273,747 | $ 285,372 | $ 285,050 | $ 94,777
Impact of adopting ASC 326 |  |  |  | 38,102
Charged-off loans | (12,289) | (15,029) | (39,319) | (35,724)
Recovery of previously charged-off loans | 3,008 | 1,973 | 8,673 | 7,128
Provision for Loan and Lease Losses | 4,169 | 16,329 | 14,231 | 184,362
Ending Balance | 268,635 | 288,645 | 268,635 | 288,645
Commercial real estate - Owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 19,311 | 38,803 | 23,298 | 13,406
Impact of adopting ASC 326 |  |  |  | 264
Charged-off loans | (543) | (186) | (1,246) | (1,247)
Recovery of previously charged-off loans | 80 | 47 | 1,158 | 272
Provision for Loan and Lease Losses | 411 | (2,238) | (3,951) | 23,731
Ending Balance | 19,259 | 36,426 | 19,259 | 36,426
Commercial real estate - Non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 79,081 | 68,426 | 79,132 | 19,963
Impact of adopting ASC 326 |  |  |  | (4,740)
Charged-off loans | (201) | (222) | (672) | (485)
Recovery of previously charged-off loans | 326 | 432 | 486 | 631
Provision for Loan and Lease Losses | (5,180) | 1,223 | (4,920) | 54,490
Ending Balance | 74,026 | 69,859 | 74,026 | 69,859
Consumer real estate – mortgage |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 30,445 | 29,358 | 33,304 | 8,054
Impact of adopting ASC 326 |  |  |  | 21,029
Charged-off loans | (94) | (907) | (626) | (3,033)
Recovery of previously charged-off loans | 777 | 297 | 1,690 | 971
Provision for Loan and Lease Losses | (103) | 3,201 | (3,343) | 4,928
Ending Balance | 31,025 | 31,949 | 31,025 | 31,949
Construction and land development |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 33,487 | 41,897 | 42,408 | 12,662
Impact of adopting ASC 326 |  |  |  | (3,144)
Charged-off loans | 0 | 0 | (367) | 0
Recovery of previously charged-off loans | 32 | 7 | 269 | 100
Provision for Loan and Lease Losses | (659) | (682) | (9,450) | 31,604
Ending Balance | 32,860 | 41,222 | 32,860 | 41,222
Commercial and industrial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 102,101 | 100,610 | 98,423 | 36,112
Impact of adopting ASC 326 |  |  |  | 23,040
Charged-off loans | (10,167) | (12,984) | (32,890) | (27,982)
Recovery of previously charged-off loans | 997 | 799 | 2,848 | 3,798
Provision for Loan and Lease Losses | 8,485 | 13,783 | 33,035 | 67,240
Ending Balance | 101,416 | 102,208 | 101,416 | 102,208
Consumer and other |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 9,322 | 6,278 | 8,485 | 3,595
Impact of adopting ASC 326 |  |  |  | 2,638
Charged-off loans | (1,284) | (730) | (3,518) | (2,977)
Recovery of previously charged-off loans | 796 | 391 | 2,222 | 1,356
Provision for Loan and Lease Losses | 1,215 | 1,042 | 2,860 | 2,369
Ending Balance | 10,049 | 6,981 | 10,049 | 6,981
Unallocated |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 0 | 0 | 0 | 985
Impact of adopting ASC 326 |  |  |  | (985)
Charged-off loans | 0 | 0 | 0 | 0
Recovery of previously charged-off loans | 0 | 0 | 0 | 0
Provision for Loan and Lease Losses | 0 | 0 | 0 | 0
Ending Balance | $ 0 | $ 0 | $ 0 | $ 0

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