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Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning Balance | $ 62,173 | $ 85,136 | $ 64,586 | $ 86,670
Charge-offs | 2,192 | 3,010 | 4,594 | 6,037
Recoveries | 639 | 202 | 1,287 | 335
Provision | 2,503 | (5,224) | 1,844 | (3,864)
Ending Balance | 63,123 | 77,104 | 63,123 | 77,104
Average Balance | $ 5,242,567 | $ 5,509,593 | $ 5,150,007 | $ 5,580,580
Net charge-offs to loan average balance | 0.12% | 0.20% | 0.13% | 0.21%
Provision (benefit) for credit losses | $ 3,500 | $ (5,600) | $ 3,100 | $ (4,200)
Provision (release) for off-balance sheet commitments | 408 | (390) | 556 | (338)
Credit loss expense (benefit) | 540 | 5 | 725 | 5
Real estate | Commercial real estate |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning Balance | 14,606 | 18,397 | 13,425 | 15,430
Charge-offs | 0 | 102 | 166 | 130
Recoveries | 0 | 3 | 2 | 6
Provision | 1,506 | (2,016) | 2,851 | 976
Ending Balance | 16,112 | 16,282 | 16,112 | 16,282
Average Balance | $ 1,773,784 | $ 1,465,799 | $ 1,828,700 | $ 1,443,931
Net charge-offs to loan average balance | 0.00% | 0.03% | 0.02% | 0.02%
Real estate | Construction/land/land development |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning Balance | $ 4,580 | $ 7,389 | $ 4,011 | $ 8,191
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Provision | 127 | (1,787) | 696 | (2,589)
Ending Balance | 4,707 | 5,602 | 4,707 | 5,602
Average Balance | $ 576,672 | $ 516,794 | $ 587,872 | $ 529,219
Net charge-offs to loan average balance | 0.00% | 0.00% | 0.00% | 0.00%
Real estate | Residential real estate |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning Balance | $ 5,821 | $ 8,294 | $ 6,116 | $ 9,418
Charge-offs | 0 | 58 | 75 | 58
Recoveries | 86 | 8 | 92 | 17
Provision | (56) | 815 | (282) | (318)
Ending Balance | 5,851 | 9,059 | 5,851 | 9,059
Average Balance | $ 937,005 | $ 929,332 | $ 966,363 | $ 908,884
Net charge-offs to loan average balance | (0.04%) | 0.02% | 0.00% | 0.01%
Commercial and industrial |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning Balance | $ 36,315 | $ 49,342 | $ 40,146 | $ 51,857
Charge-offs | 2,179 | 2,845 | 4,325 | 5,800
Recoveries | 545 | 186 | 1,180 | 294
Provision | 796 | (1,634) | (1,524) | (1,302)
Ending Balance | 35,477 | 45,049 | 35,477 | 45,049
Average Balance | $ 1,411,946 | $ 1,761,803 | $ 1,398,802 | $ 1,791,281
Net charge-offs to loan average balance | 0.47% | 0.61% | 0.45% | 0.62%
Mortgage warehouse lines of credit |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning Balance | $ 329 | $ 923 | $ 340 | $ 856
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Provision | 130 | (363) | 119 | (296)
Ending Balance | 459 | 560 | 459 | 560
Average Balance | $ 434,381 | $ 819,233 | $ 444,851 | $ 890,127
Net charge-offs to loan average balance | 0.00% | 0.00% | 0.00% | 0.00%
Consumer |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning Balance | $ 522 | $ 791 | $ 548 | $ 918
Charge-offs | 13 | 5 | 28 | 49
Recoveries | 8 | 5 | 13 | 18
Provision | 0 | (239) | (16) | (335)
Ending Balance | 517 | 552 | 517 | 552
Average Balance | $ 16,219 | $ 16,632 | $ 15,979 | $ 17,138
Net charge-offs to loan average balance | 0.13% | 0.00% | 0.19% | 0.36%

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