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Deposits Deposit Liabilities, Type (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Deposits [Abstract]    
Demand deposits (noninterest bearing) $ 1,971,013 $ 1,951,274
Savings and NOW 646,200 700,520
Money market 3,969,330 3,338,891
Certificates of deposit under $100,000 145,226 265,883
Certificates of deposit $100,000 or more to less than $250,000 (1) 94,095 98,120
Certificates of deposit $250,000 or more 415,612 426,482
Deposits $ 7,241,476 $ 6,781,170