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Loans - Summary of Allowance for Loan Losses by Portfolio Class and Category (Details) - Portfolio loans, net - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Allowance for Loan Losses [Roll Forward] |  |
Beginning Balance | $ 145,041 | $ 136,671
Provision for credit losses | 4,308 | (503)
Charge-offs | (3,312) | (6,474)
Recoveries | 1,791 | 827
Ending Balance | 139,212 | 131,527
Commercial and industrial |  |
Allowance for Loan Losses [Roll Forward] |  |
Beginning Balance | 63,825 | 58,812
Provision for credit losses | 1,481 | (541)
Charge-offs | (2,159) | (3,739)
Recoveries | 790 | 327
Ending Balance | 60,975 | 55,941
CRE - investor owned |  |
Allowance for Loan Losses [Roll Forward] |  |
Beginning Balance | 35,877 | 32,062
Provision for credit losses | (121) | (3,381)
Charge-offs | 0 | (2,372)
Recoveries | 196 | 34
Ending Balance | 36,194 | 33,105
CRE - owner occupied |  |
Allowance for Loan Losses [Roll Forward] |  |
Beginning Balance | 17,560 | 17,012
Provision for credit losses | 582 | (3,226)
Charge-offs | (180) | (28)
Recoveries | 240 | 9
Ending Balance | 17,038 | 20,219
Construction and land development |  |
Allowance for Loan Losses [Roll Forward] |  |
Beginning Balance | 14,536 | 21,413
Provision for credit losses | 1,574 | 7,091
Charge-offs | 0 | 0
Recoveries | 21 | 235
Ending Balance | 12,983 | 14,557
Residential real estate |  |
Allowance for Loan Losses [Roll Forward] |  |
Beginning Balance | 7,927 | 4,585
Provision for credit losses | 456 | 152
Charge-offs | (887) | (271)
Recoveries | 525 | 143
Ending Balance | 7,109 | 4,305
Other |  |
Allowance for Loan Losses [Roll Forward] |  |
Beginning Balance | 5,316 | 2,787
Provision for credit losses | 336 | (598)
Charge-offs | (86) | (64)
Recoveries | 19 | 79
Ending Balance | $ 4,913 | $ 3,400

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