Schedule I - Summary of Investments-Other Than Investments in Related Parties

12 Months Ended

Dec. 31, 2020

SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract]

Schedule I - Summary of Investments-Other Than Investments in Related Parties

Schedule I—Summary of Investments—Other Than Investments in Related Parties

December 31, 2020

Type of Investment (In thousands)	Amortized Cost		Fair Value		Amount at which shown in the Balance Sheet
Fixed maturities:
Bonds:
United States Government and government agencies and authorities	$	1,212,622	$	1,254,075	$	1,254,075
States, municipalities and political subdivisions	513,870		551,517		551,517
Residential and commercial mortgage securities	391,921		409,282		409,282
Asset-backed securities	452,527		454,717		454,717
Foreign government and agency securities	56,045		61,607		61,607
All other corporate bonds	1,050,830		1,107,315		1,107,315
Total fixed maturities	3,677,815		3,838,513		3,838,513
Short-term investments	726,875		726,860		726,860
Other invested assets	81,263		88,904		88,904
Total investments	$	4,485,953	$	4,654,277	$	4,654,277