XML 105 R88.htm IDEA: XBRL DOCUMENT v3.22.0.1
Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Goodwill And Other Intangible Assets [Line Items]      
Amortization of core deposit and other intangible assets $ 10,167 $ 14,869 $ 19,490
Minimum [Member]      
Goodwill And Other Intangible Assets [Line Items]      
Estimated useful lives 5 years    
Maximum [Member]      
Goodwill And Other Intangible Assets [Line Items]      
Estimated useful lives 10 years    
Core Deposit and Other Intangible Assets [Member]      
Goodwill And Other Intangible Assets [Line Items]      
Estimated useful lives 7 years    
Amortization of core deposit and other intangible assets $ 10,000 $ 15,000 $ 19,000
Estimated amortization expense in 2022 $ 4,000    
Core Deposit and Other Intangible Assets [Member] | Minimum [Member]      
Goodwill And Other Intangible Assets [Line Items]      
Estimated useful lives 3 years    
Core Deposit and Other Intangible Assets [Member] | Maximum [Member]      
Goodwill And Other Intangible Assets [Line Items]      
Estimated useful lives 7 years