Our surety products guarantee performance and payment by our bonded principals. Our contract bonds protect owners from failure to perform on the part of our principals. In addition, our surety bonds protect material suppliers and subcontractors from nonpayment by our contractors. When surety losses occur, our loss is determined by estimating the cost to complete the remaining work and to pay the contractor's unpaid bills, offset by contract funds due to the contractor, reinsurance, and the value of any collateral to which we may have access.
The following table shows the composition of fixed maturity securities held in our available-for-sale and trading security portfolios by credit rating at December 31, 2020 and 2019. Information contained in the table is generally
We hold investments in limited liability partnerships as part of our investment strategy. Pursuant to agreements with our limited liability partnership investments, we are contractually committed through July 10, 2030 to make capital contributions upon request of the partnerships. Our remaining potential contractual obligation was $8.5 at December 31, 2020.
Premiums earned and losses and loss settlement expenses incurred are reported net of reinsurance ceded. Ceded insurance business is accounted for on a basis consistent with the original policies issued and the terms of the reinsurance contracts. Refer to Note 4 "Reinsurance" for a discussion of our reinsurance activities.
The following tables summarize our fixed maturity securities that were in an unrealized loss position reported on a consolidated basis at December 31, 2020 and 2019. The securities are presented by the length of time they have been continuously in an unrealized loss position. Non-credit related unrealized losses are recognized as a component of other comprehensive income and represent other market movements that are not credit related, for example interest rate changes. We have no intent to sell, and it is more likely than not that we will not be required to sell, these securities until the fair value recovers to at least equal our cost basis or the securities mature.
To determine the fair value of the majority of our investments, we utilize prices obtained from independent, nationally recognized pricing services. We obtain one price for each security. When the pricing services cannot provide a determination of fair value for a specific security, we obtain non-binding price quotes from broker-dealers with whom we have had several years of experience and who have demonstrated knowledge of the subject security. We request and utilize one broker quote per security.
Federal income tax expense (benefit) from both continuing and discontinued operations is composed of the following:
We also offer a health and dental benefit plan to all of our eligible employees and retirees that consists of two programs: (1) the self-funded employee health and dental benefit plan and (2) the self-funded (pre-65) and fully-funded (post-65) retiree health and dental benefit plan (the "post-retirement benefit plan"). Effective January 1, 2017, there was a plan amendment, which included the following changes: eliminated the pre-65 retirement plan with a $500 hundred dollar deductible; for retirements after January 1, 2017, the retiree will pay 50 percent of the lower cost supplemental plan if they are 65 or older and 100 percent of the premium if less than 65; and removed spousal coverage after the death of the participant. The financial impact of the changes were reflected in accumulated other comprehensive income at December 31, 2016. Effective January 1, 2019, there was a plan amendment, which requires spouses to pay 100 percent of the medical, dental & vision premiums and the subsidy for the post-65 retirees, which is based off the lowest cost Medicare Supplement Plan (Plan 1). The financial impact of the changes were reflected in accumulated other comprehensive income at December 31, 2019.
In 2020, 2019 and 2018, we recognized stock-based compensation expense of $4,991, $6,152 and $5,249, respectively. Stock-based compensation expense is recognized over the vesting period of the stock options.
The analysis below details the award activity for the restricted stock and restricted stock unit awards outstanding at December 31, 2020:
In 2020, 2019 and 2018 we recognized $3,734, $4,659 and $3,877, respectively, in compensation expense related to the restricted stock and restricted stock unit awards. At December 31, 2020, we had $3,074 in compensation expense that has yet to be recognized through our results of operations related to the restricted stock and restricted stock unit awards. The intrinsic value of the non-vested restricted stock and restricted stock unit awards outstanding totaled $5,469 and $10,165 at December 31, 2020 and 2019, respectively.
The entry into the Credit Agreement was completed as part of the Company’s regular course of financial planning and was not initiated as a result of market conditions resulting from the COVID-19 pandemic.