XML 124 R94.htm IDEA: XBRL DOCUMENT v3.20.4
Debt - Narrative (Details) - USD ($)
3 Months Ended 12 Months Ended
Nov. 23, 2015
Dec. 31, 2017
Dec. 31, 2020
Dec. 31, 2019
May 31, 2020
Jun. 21, 2019
Jun. 20, 2019
Debt Instrument [Line Items]              
Purchase of FHLB activity-based common stock as percentage of borrowing, required     4.50%        
Purchase of FHLB activity-based common stock as percentage of borrowing, percentage, authorized       15.00%      
Principal borrowings on Bank Credit Facility   $ 50,000,000.0          
FHLB advances interest rate     0.44%        
Proceeds from COVID relief advance         $ 4,000,000.0    
Minimum              
Debt Instrument [Line Items]              
Purchase of FHLB activity-based common stock as percentage of borrowing, required     2.00%        
Long-term debt              
Debt Instrument [Line Items]              
FHLB advances     $ 54,000,000.0        
October 5, 2022              
Debt Instrument [Line Items]              
FHLB advances   25,000,000.0          
December 2, 2022              
Debt Instrument [Line Items]              
FHLB advances   $ 25,000,000.0          
4.50% Senior Notes              
Debt Instrument [Line Items]              
Principal amount $ 250,000,000.0   $ 250,000,000 $ 250,000,000      
Stated rate 4.50%   4.50% 4.50%      
Discount percent on issuance 0.265%            
Effective interest percentage 4.53%            
Debt redemption price, percentage 100.00%            
Debt redemption price, interest discounted at treasury yield margin 0.35%            
Line of Credit              
Debt Instrument [Line Items]              
Debt term     5 years        
Borrowing capacity           $ 150,000,000.0 $ 225,000,000.0
Senior revolving credit facility     $ 135,000,000.0        
Commitment fee percent     0.15%        
London Interbank Offered Rate (LIBOR) | Line of Credit              
Debt Instrument [Line Items]              
Basis spread on variable rate     1.15%