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v3.22.2

Business Segment Reporting - Schedule of Segment Financial Results (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | $ 224,791 | $ 201,071 | $ 435,146 | $ 395,186
Provision for credit losses | 13,400 | 24,000 | 6,900 | 16,500
Noninterest income | 176,335 | 131,589 | 300,013 | 240,486
Noninterest expense | 214,127 | 201,338 | 428,905 | 402,284
Income before income taxes | 173,599 | 107,322 | 299,354 | 216,888
Income tax expense | 36,043 | 19,910 | 55,835 | 36,833
NET INCOME | 137,556 | 87,412 | 243,519 | 180,055
Average assets | 37,563,000 | 34,264,000 | 38,353,000 | 33,654,000
Commercial Banking [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 149,094 | 142,878 | 294,096 | 279,287
Provision for credit losses | 12,067 | 21,993 | 5,027 | 13,816
Noninterest income | 56,894 | 37,106 | 83,594 | 45,281
Noninterest expense | 79,521 | 73,472 | 159,110 | 143,196
Income before income taxes | 114,400 | 84,519 | 213,553 | 167,556
Income tax expense | 23,752 | 15,679 | 39,831 | 28,455
NET INCOME | 90,648 | 68,840 | 173,722 | 139,101
Average assets | 16,829,000 | 14,993,000 | 16,824,000 | 14,593,000
Institutional Banking [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 34,981 | 21,258 | 61,233 | 43,397
Provision for credit losses | 89 | 147 | 240 | 367
Noninterest income | 81,082 | 68,745 | 154,354 | 137,166
Noninterest expense | 76,511 | 72,575 | 152,112 | 143,857
Income before income taxes | 39,463 | 17,281 | 63,235 | 36,339
Income tax expense | 8,193 | 3,206 | 11,795 | 6,171
NET INCOME | 31,270 | 14,075 | 51,440 | 30,168
Average assets | 13,577,000 | 11,611,000 | 14,125,000 | 11,608,000
Personal Banking [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 40,716 | 36,935 | 79,817 | 72,502
Provision for credit losses | 1,244 | 1,860 | 1,633 | 2,317
Noninterest income | 38,359 | 25,738 | 62,065 | 58,039
Noninterest expense | 58,095 | 55,291 | 117,683 | 115,231
Income before income taxes | 19,736 | 5,522 | 22,566 | 12,993
Income tax expense | 4,098 | 1,025 | 4,209 | 2,207
NET INCOME | 15,638 | 4,497 | 18,357 | 10,786
Average assets | $ 7,157,000 | $ 7,660,000 | $ 7,404,000 | $ 7,453,000

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