XML 58 R47.htm IDEA: XBRL DOCUMENT v3.21.1
Equity Investments - Narrative (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Net Investment Income [Line Items]      
Equity investments with readily determinable fair value $ 59,049,000   $ 59,699,000
Equity investments without readily determinable fair values 31,900,000   32,100,000
Equity investments without readily determinable fair values, impairment 0 $ 0  
Equity investments without readily determinable fair values, observable price changes 0 $ 0  
Mutual funds      
Net Investment Income [Line Items]      
Equity investments with readily determinable fair value 27,100,000   27,600,000
Correspondent bank stock      
Net Investment Income [Line Items]      
Equity investments without readily determinable fair values 370,000   370,000
CDFI investments      
Net Investment Income [Line Items]      
Equity investments without readily determinable fair values 1,000,000.0   1,000,000.0
CRA investments      
Net Investment Income [Line Items]      
Equity investments without readily determinable fair values $ 30,600,000   $ 30,700,000