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Loans and Allowance for Credit Losses - Allowance for Credit Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | $ 280,881 | $ 222,465 | $ 285,050 | $ 94,777
Impact of adopting ASC 326 |  |  |  | 38,102
Charged-off loans | (12,755) | (9,002) | (27,029) | (20,695)
Recovery of previously charged-off loans | 2,787 | 3,617 | 5,664 | 5,155
Provision for Loan and Lease Losses | 2,834 | 68,292 | 10,062 | 168,033
Ending Balance | 273,747 | 285,372 | 273,747 | 285,372
Commercial real estate - Owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 22,065 | 23,634 | 23,298 | 13,406
Impact of adopting ASC 326 |  |  |  | 264
Charged-off loans | (6) | 0 | (703) | (1,061)
Recovery of previously charged-off loans | 476 | 80 | 1,078 | 225
Provision for Loan and Lease Losses | (3,224) | 15,089 | (4,362) | 25,969
Ending Balance | 19,311 | 38,803 | 19,311 | 38,803
Commercial real estate - Non-owner occupied |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 80,519 | 32,114 | 79,132 | 19,963
Impact of adopting ASC 326 |  |  |  | (4,740)
Charged-off loans | (332) | (2) | (472) | (263)
Recovery of previously charged-off loans | 147 | 106 | 159 | 199
Provision for Loan and Lease Losses | (1,253) | 36,208 | 262 | 53,267
Ending Balance | 79,081 | 68,426 | 79,081 | 68,426
Consumer real estate – mortgage |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 30,199 | 32,998 | 33,304 | 8,054
Impact of adopting ASC 326 |  |  |  | 21,029
Charged-off loans | (161) | (1,196) | (532) | (2,126)
Recovery of previously charged-off loans | 548 | 484 | 913 | 674
Provision for Loan and Lease Losses | (141) | (2,928) | (3,240) | 1,727
Ending Balance | 30,445 | 29,358 | 30,445 | 29,358
Construction and land development |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 37,642 | 38,911 | 42,408 | 12,662
Impact of adopting ASC 326 |  |  |  | (3,144)
Charged-off loans | 0 | 0 | (367) | 0
Recovery of previously charged-off loans | 200 | 50 | 237 | 93
Provision for Loan and Lease Losses | (4,355) | 2,936 | (8,791) | 32,286
Ending Balance | 33,487 | 41,897 | 33,487 | 41,897
Commercial and industrial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 101,076 | 88,060 | 98,423 | 36,112
Impact of adopting ASC 326 |  |  |  | 23,040
Charged-off loans | (10,972) | (6,734) | (22,721) | (14,998)
Recovery of previously charged-off loans | 645 | 2,249 | 1,851 | 2,997
Provision for Loan and Lease Losses | 11,352 | 17,035 | 24,548 | 53,459
Ending Balance | 102,101 | 100,610 | 102,101 | 100,610
Consumer and other |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 9,380 | 6,748 | 8,485 | 3,595
Impact of adopting ASC 326 |  |  |  | 2,638
Charged-off loans | (1,284) | (1,070) | (2,234) | (2,247)
Recovery of previously charged-off loans | 771 | 648 | 1,426 | 967
Provision for Loan and Lease Losses | 455 | (48) | 1,645 | 1,325
Ending Balance | 9,322 | 6,278 | 9,322 | 6,278
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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