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Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]  
Annuity Deposits (Net of Coinsurance), By Product Type Annuity deposits (net of coinsurance) collected in 2021, 2020 and 2019, by product type were as follows:
Year Ended December 31,
Product Type202120202019
(Dollars in thousands)
Fixed index annuities$3,026,211 $2,309,580 $4,603,490 
Annual reset fixed rate annuities6,000 7,846 10,665 
Multi-year fixed rate annuities2,452,994 1,295,843 47,016 
Single premium immediate annuities (SPIA)59,816 33,461 12,002 
$5,545,021 $3,646,730 $4,673,173