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Other Assets - Summary of Other Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Prepaid expenses $ 6,929 $ 6,571
Interest rate swaps 30,181 11,502
ROU assets 19,112 18,522
Affordable housing investments 10,617 12,452
Other investments 48,017 45,540
Other assets 12,841 15,550
Total $ 127,697 $ 110,137