Condensed Consolidated Balance Sheets Parenthetical - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Investments:
Fixed-maturity securities and Short-term investments available-for-sale, amortized cost		$ 2,301,238
Fixed-maturity securities held to maturity, fair value	$ 1,516,401	1,606,208
Equity securities, at fair value, cost	32,239	32,031
Trading securities, amortized cost	$ 35,179	$ 16,359
Stockholders’ equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	39,414,000	39,306,000
Common stock, shares outstanding	39,414,000	39,306,000
Fixed Maturities
Investments:
Fixed-maturity securities and Short-term investments available-for-sale, amortized cost	$ 2,440,181	$ 2,301,238
Trading securities, amortized cost	$ 35,179	$ 16,359