Health care reform activity is not expected to have a significant impact on our operations, and we are continuing to monitor future developments. The Affordable Care Act (ACA) imposes an annual fee to health insurance issuers offering commercial health insurance as well as another fee for premium stabilization. These taxes totaled $621 thousand, $1.2 million and $1.8 million in 2016, 2015 and 2014, respectively.
Other distribution. Certain of our other distribution channels market health products, although their main emphasis is on life insurance. On a combined basis, they accounted for 16% of health premium in 2016 and 2015. The American Income Exclusive Agency primarily markets accident plans. The Direct Response group markets primarily Medicare Supplements to employer or union-sponsored groups. Direct Response added $6 million of Medicare Supplement net sales in 2016 compared with $5 million in 2015 and $23 million in 2014. The higher net sales in 2014 were due to the addition of a large new group in the third quarter of 2014.
Short-Term Borrowings. An additional source of parent company liquidity is a line of credit facility with a group of lenders which allows unsecured borrowings and stand-by letters of credit up to $750 million, which could be extended up to $1 billion. While Torchmark can request the extension, it is not guaranteed. In May 2016, Torchmark amended the facility to extend the maturity date to May 2021. The amendment also allowed for an additional $100 million term loan as discussed under the caption Credit Facility in Note 11-Debt in the Notes to Consolidated Financial Statements. The facility is further designated as a back-up line of credit for a commercial paper program as well as the stand-by letters of credit as discussed below. As of December 31, 2016, we had available $310 million of additional borrowing capacity under this facility, compared with $332 million a year earlier. There have been no difficulties in accessing the commercial paper market during the three years ended December 31, 2016.
Pension obligations are primarily liabilities in trust funds that are calculated in accordance with the terms of the pension plans. They are offset by invested assets in the trusts, which are funded through periodic contributions by Torchmark in a manner which will provide for the settlement of the obligations as they become due. Therefore, our obligations are offset by those assets when reported on Torchmark’s Consolidated Balance Sheets. At December 31, 2016, these pension obligations were $528 million, but there were also assets of $329 million in the pension entities. The schedule of pension benefit payments covers ten years and is based on the same assumptions used to measure the pension obligations, except there is no interest assumption because the payments are undiscounted. There are also obligations for benefits other than pensions with a liability of $24 million. Please refer to Note 9-Postretirement Benefits in the Notes to Consolidated Financial Statements for more information on pension obligations.
Debt: The carrying value of the funded debt was $1.1 billion at December 31, 2016, compared with $993 million a year earlier. On April 5, 2016, Torchmark completed the issuance and sale of $300 million aggregate principal amount of Torchmark’s 6.125% Junior Subordinated Debentures due 2056. The debentures were sold pursuant to Torchmark’s shelf registration statement on Form S-3, filed September 25, 2015. The net proceeds from the sale of the debentures were $290 million, after giving effect to the underwriting discount and estimated expenses of the offering of the debentures. Torchmark used the net proceeds from the offering of the debentures to repay the $250 million outstanding principal amount plus accrued interest of $8 million on its 6.375% Senior Notes that were due June 15, 2016. The remaining proceeds were used for general corporate purposes.
While the intent of the adoption of this guidance is simplification, inherent changes in future share prices and volume of stock option exercises are expected to result in increased volatility in net income and earnings per share in future periods. As provided by the new standard, the adoption is prospective and thus will impact only 2016 and future periods.
A schedule of fixed maturities by contractual maturity at December 31, 2016 is shown below on an amortized cost basis and on a fair value basis. Actual maturities could differ from contractual maturities due to call or prepayment provisions.
The collateral underlying collateralized debt obligations for which fair values are reported as Level 3 consists primarily of trust preferred securities issued by banks and insurance companies. Collateralized debt obligations are valued at the present value of expected future cash flows using an unobservable discount rate. Expected cash flows are determined by scheduling the projected repayment of the collateral assuming no future defaults, deferrals, or recoveries. The discount rate is risk-adjusted to take these items into account. A significant increase (decrease) in the discount rate will produce a significant decrease (increase) in fair value. Additionally, a significant increase (decrease) in the cash flow expectations would result in a significant increase (decrease) in fair value.
The following table includes activity for the active SERP for the three years ended December 31, 2016.
The second supplemental benefit pension plan is limited to a very select group of employees and was closed as of December 31, 1994. It provides the full benefits that an employee would have otherwise received from a defined benefit plan in the absence of the limitation on benefits payable under a qualified plan. This plan is also nonqualified and unfunded. Liability for this closed plan was $3 million at December 31, 2016 and December 31, 2015. Pension cost for both supplemental defined benefit plans is determined in the same manner as for the qualified defined benefit plans.
Retirement of Treasury Stock: Torchmark retired 3.0 million shares of treasury stock in 2016, 4.0 million in 2015, and 17.0 million in 2014.
Restricted stock grants consist of time-vested grants, restricted stock units, and performance shares. Time-vested restricted stock is available to both senior executives and directors. The employee grants generally vest over five years and the director grants vest over six months. Restricted stock units are available only to directors. They vest over six months and are not converted to shares until the directors’ retirement, death, or disability. Director restricted stock and restricted stock units are generally granted on the first work day of the year. Performance shares are granted to a limited number of senior executives. Performance shares have a three year contract life and are not settled in shares until the termination of the three-year contract period. While the grant specifies a stated target number of shares, the determination of the actual settlement in shares will be based on the achievement of certain performance objectives of Torchmark over the respective three-year contract periods. Certain executive restricted stock and performance share grants contain terms related to age that could accelerate vesting.
Guarantees: At December 31, 2016, Torchmark had in place four guarantee agreements, of which were either parent company guarantees of subsidiary obligations to a third party, or parent company guarantees of obligations between wholly-owned subsidiaries. As of December 31, 2016, Torchmark had no liability with respect to these guarantees.