Investments (Tables)
 12 Months Ended
Dec. 31, 2021
Debt Securities, Available-for-Sale and Held-to-Maturity, after Allowance for Credit Loss [Abstract]  
Summary of Available For Sale and Held to Maturity Securities Amortized Cost Gross Unrealized Gains Losses and Fair Value

As of December 31, 2021 and 2020, amortized cost, gross unrealized gains and losses, and estimated fair values of total fixed-maturity securities were as follows:

 

 

 

December 31, 2020

 

 

 

Amortized

 

 

Gross Unrealized

 

 

Gross Unrealized

 

 

Estimated

 

(in thousands)

 

Cost

 

 

Gain

 

 

Loss

 

 

Fair Value

 

Held-to-maturity securities:

 

 

 

 

 

 

 

 

 

 

 

 

U.S. Treasury bonds

 

$

10,002

 

 

$

14

 

 

$

-

 

 

$

10,016

 

Available-for-sale securities:

 

 

 

 

 

 

 

 

 

 

 

 

U.S. Treasury bonds

 

$

13,060

 

 

$

68

 

 

$

-

 

 

$

13,128

 

 

 

$

23,062

 

 

$

82

 

 

$

-

 

 

$

23,144

 

 

 

 

December 31, 2021

 

 

 

Amortized

 

 

Gross Unrealized

 

 

Gross Unrealized

 

 

Estimated

 

(in thousands)

 

Cost

 

 

Gain

 

 

Loss

 

 

Fair Value

 

Available-for-sale securities:

 

 

 

 

 

 

 

 

 

 

 

 

U.S. Treasury bonds

 

$

15,146

 

 

$

-

 

 

$

(36

)

 

$

15,110

 

Certificates of deposit

 

 

3,922

 

 

 

-

 

 

 

(4

)

 

 

3,918

 

 

 

$

19,068

 

 

$

-

 

 

$

(40

)

 

$

19,028

 
Summary of Amortized Cost and Estimated Fair Value of Fixed-maturity Securities Amortized cost and estimated fair value of fixed-maturity securities at December 31, 2021 by contractual maturity were as follows:

 

 

 

2021

 

(in thousands)

 

Amortized
Cost

 

 

Estimated
Fair Value

 

Amounts maturing in:

 

 

 

 

 

 

One year or less

 

$

3,922

 

 

$

3,918

 

More than one year

 

 

15,146

 

 

 

15,110

 

Total investments

 

$

19,068

 

 

$

19,028