v3.25.2
Segment and Geographical Information - Summary of Assets and Profit or Loss by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting Information [Line Items]        
Revenues $ 793,334 $ 790,955 $ 1,598,177 $ 1,526,904
Benefits, Losses and Expenses [Abstract]        
Benefits and claims 152,494 150,030 327,355 316,351
Amortization of DAC 80,043 73,643 158,592 145,692
Insurance expenses 64,362 62,685 129,168 125,834
Insurance commissions 5,751 7,399 11,875 17,033
Sales commissions 166,291 142,154 324,409 273,292
Other operating expenses 89,791 80,505 188,129 173,950
Total benefits and expenses 558,837 518,186 1,142,365 1,060,747
Income from continuing operations before income taxes 234,497 272,769 455,812 466,157
Term Life Insurance Segment [Member]        
Segment Reporting Information [Line Items]        
Revenues 441,834 426,944 899,676 867,357
Benefits, Losses and Expenses [Abstract]        
Benefits and claims 148,725 146,268 319,968 310,115
Future policy benefits remeasurement (gain) loss (5,743) (4,280) (9,145) (4,600)
Amortization of DAC 78,386 71,916 155,308 142,407
Insurance expenses 63,216 61,476 126,861 123,454
Insurance commissions 2,238 3,785 4,887 9,833
Total benefits and expenses 286,822 279,165 597,879 581,209
Income from continuing operations before income taxes 155,012 147,779 301,797 286,148
Investment and Savings Products Segment [Member]        
Segment Reporting Information [Line Items]        
Revenues 298,298 260,906 589,109 504,622
Benefits, Losses and Expenses [Abstract]        
Amortization of DAC 1,368 1,478 2,705 2,679
Insurance commissions 3,468 3,343 6,745 6,743
Fees based on client asset values 11,404 9,548 22,319 18,890
Fees based on fee-generating positions 11,015 10,483 23,425 21,909
Other operating expenses 30,677 24,238 58,766 50,001
Total benefits and expenses 218,877 186,124 428,418 364,277
Income from continuing operations before income taxes 79,421 74,782 160,691 140,345
Investment and Savings Products Segment [Member] | Sales-based        
Benefits, Losses and Expenses [Abstract]        
Sales commissions 82,935 70,509 160,202 133,322
Investment and Savings Products Segment [Member] | Assets-based        
Benefits, Losses and Expenses [Abstract]        
Sales commissions 78,010 66,525 154,256 130,733
Corporate and Other Distributed Products Segment [Member]        
Segment Reporting Information [Line Items]        
Revenues 53,202 103,105 109,392 154,925
Benefits, Losses and Expenses [Abstract]        
Benefits and claims 3,769 3,762 7,387 6,236
Future policy benefits remeasurement (gain) loss (152) (49) (23) 325
Amortization of DAC 289 249 579 606
Insurance expenses 1,146 1,209 2,307 2,380
Insurance commissions 45 271 243 457
Sales commissions 5,346 5,120 9,951 9,237
Interest expense 6,000 6,099 12,005 12,870
Other operating expenses 36,695 36,236 83,619 83,150
Total benefits and expenses 53,138 52,897 116,068 115,261
Income from continuing operations before income taxes $ 64 $ 50,208 $ (6,676) $ 39,664