v3.26.1
Segment Information - Summary of Income (loss) Before Income Taxes by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting Information [Line Items]    
Revenues $ 872,693 $ 804,843
Expenses:    
Benefits and claims 171,254 174,862
Amortization of DAC 84,260 78,550
Insurance expenses 66,567 64,805
Insurance commissions 5,618 6,124
Sales commissions 195,210 158,118
Interest expense 5,861 6,004
Other operating expenses 101,882 98,338
Total benefits and expenses 623,275 583,528
Income before income taxes 249,418 221,315
Term Life Insurance Segment [Member]    
Segment Reporting Information [Line Items]    
Revenues 464,634 457,841
Expenses:    
Benefits and claims 167,252 171,243
Future policy benefits remeasurement (gain) loss (7,564) (3,402)
Amortization of DAC 82,666 76,921
Insurance expenses 65,378 63,645
Insurance commissions 2,042 2,649
Total benefits and expenses 309,774 311,056
Income before income taxes 154,860 146,785
Investment and Savings Products Segment [Member]    
Segment Reporting Information [Line Items]    
Revenues 350,645 290,812
Expenses:    
Amortization of DAC 1,334 1,337
Insurance commissions 3,457 3,277
Fees based on client asset values 13,287 10,915
Fees based on fee-generating positions 11,121 12,410
Other operating expenses 30,019 28,089
Total benefits and expenses 249,746 209,541
Income before income taxes 100,899 81,271
Investment and Savings Products Segment [Member] | Sales-based    
Expenses:    
Sales commissions 95,168 77,267
Investment and Savings Products Segment [Member] | Asset-based    
Expenses:    
Sales commissions 95,360 76,246
Corporate and Other Distributed Products Segment [Member]    
Segment Reporting Information [Line Items]    
Revenues 57,414 56,190
Expenses:    
Benefits and claims 4,002 3,619
Future policy benefits remeasurement (gain) loss 187 129
Amortization of DAC 260 292
Insurance expenses 1,189 1,160
Insurance commissions 119 198
Sales commissions 4,682 4,605
Interest expense 5,861 6,004
Other operating expenses 47,455 46,924
Total benefits and expenses 63,755 62,931
Income before income taxes $ (6,341) $ (6,741)