XML 80 R50.htm IDEA: XBRL DOCUMENT v3.20.4
Basis of Presentation and Significant Accounting Policies - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Oct. 01, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Jan. 01, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Amortization of acquisition costs for property and casualty contracts, first term   6 months        
Amortization of acquisition costs for property and casualty contracts, second term   12 months        
Amortization of acquisition costs for supplemental policies   6 years        
Amortization term for acquisition costs of annuity contracts   20 years        
Amortization period of acquisition costs of interest sensitive life contracts   20 years        
Amortization term for acquisition costs of indexed universal life contracts   30 years        
Amortization of acquisition costs for individual life contracts, first term   10 years        
Amortization of acquisition costs for individual life contracts, second term   15 years        
Amortization of acquisition costs for individual life contracts, third term   20 years        
Amortization of acquisition costs for individual life contracts, fourth term   30 years        
Percentage of reversion to mean approach utilized to amortized policy acquisition costs   8.00%        
Deferred policy acquisition costs, corridor around the mean   2.00%        
Amortization in 2021   $ 13,067        
Amortization in 2022   12,070        
Amortization in 2023   11,232        
Amortization in 2024   10,480        
Amortization in 2025   9,811        
Goodwill impairment   $ 5,625        
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%      
FHLB advances   $ 590,500        
Share-based compensation expense   $ 4,800 $ 5,200 $ 6,600    
Weighted average fair value of nonvested options outstanding (in usd per share)   $ 6.31        
Unrecognized share-based compensation expense, nonvested options   $ 2,100        
Antidilutive securities exclude from EPS computation (in shares)   713,080 713,080 713,080 713,080  
Minimum exercise price (in usd per share)   $ 38.05 $ 38.05 $ 38.05 $ 38.05  
Maximum exercise price (in usd per share)   $ 42.95 $ 42.95 $ 42.95 $ 42.95  
Stockholders' equity   $ 1,790,079 $ 1,567,285 $ 1,290,550    
Cumulative effect of change in accounting principle            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Stockholders' equity     0 0 $ (15,041)  
Retained earnings            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Stockholders' equity   1,434,634 1,352,539 1,216,582 1,231,177  
Retained earnings | Cumulative effect of change in accounting principle            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Stockholders' equity     (509)   $ 15,041 $ (500)
Employee stock option            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Share-based compensation expense   1,100 1,200 1,200    
Restricted stock units            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Unrecognized share-based compensation expense, equity instruments other than options   6,500        
HMLIC and NTA            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Proceeds from FHLB funding agreements   $ 95,500        
Minimum            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Purchase of FHLB activity-based common stock as percentage of borrowing, required   2.00%        
Real estate property | Minimum            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Property, plant and equipment, useful life   20 years        
Real estate property | Maximum            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Property, plant and equipment, useful life   45 years        
Lease hold improvements and other property and equipment | Minimum            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Property, plant and equipment, useful life   3 years        
Lease hold improvements and other property and equipment | Maximum            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Property, plant and equipment, useful life   10 years        
Benefit Consultants Group Inc.            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Impairment charges of intangible assets $ 4,400          
Goodwill impairment $ 5,600          
Value of business acquired            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Value of business acquired   $ 83,600        
Amortization in 2021   6,600        
Amortization in 2022   6,200        
Amortization in 2023   5,800        
Amortization in 2024   5,400        
Amortization in 2025   5,100        
Value of distribution acquired | NTA            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Amortization in 2021   2,900        
Amortization in 2022   2,900        
Amortization in 2023   2,900        
Amortization in 2024   2,900        
Amortization in 2025   2,900        
Value of distribution acquired   44,700        
Value of distribution acquired | Benefit Consultants Group Inc.            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Amortization in 2022   300        
Amortization in 2023   300        
Amortization in 2024   300        
Amortization in 2025   300        
Value of distribution acquired   700        
Value of agency relationships | NTA            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Amortization in 2021   2,200        
Amortization in 2022   1,900        
Amortization in 2023   1,600        
Amortization in 2024   1,400        
Amortization in 2025   1,200        
Value of agency relationship   12,900        
Value of customer relationships | Benefit Consultants Group Inc.            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Amortization in 2021   1,200        
Amortization in 2022   1,100        
Amortization in 2023   900        
Amortization in 2024   700        
Amortization in 2025   600        
Value of customer relationship   5,900        
Interest sensitive life contracts            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Deferred policy acquisition costs, impact of unrealized investment gains (losses)   $ 90,500 $ 41,200 $ 17,900