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Financial Instruments | 12 Months Ended
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Dec. 31, 2015
Financial Instruments [Abstract] |
Financial Instruments | 14. Financial Instruments Long-term debt, principally to banks and bondholders, consists of:
(in thousands, except interest rates) |  | 2015 |  |  | 2014 |
Private placement with a fixed interest rate of 6.84%, due 2017 |  |  | $50,000 |  |  |  |  | $100,000 |  |
Revolving credit agreements with borrowings outstanding at an end of period interest rate of 2.27% in 2015 and 2.69% in 2014 (including the effect of interest rate hedging transactions, as described below), due in 2020 |  |  | 215,000 |  |  |  |  | 172,000 |  |
Various notes and mortgages, at an average end of period rate of 5.50% in both 2015 and 2014, due in varying amounts through 2021 |  |  | 96 |  |  |  |  | 111 |  |
Long-term debt |  |  | 265,096 |  |  |  |  | 272,111 |  |
Less: current portion |  |  | (16) |  |  |  |  | (50,015) |  |
Long-term debt, net of current portion |  |  | $265,080 |  |  |  |  | $222,096 |  |
Principal payments due on long-term debt are: 2017, $50.0 million and 2020, $215.0 million. Total principal payments in 2016, 2018, 2019, 2021 and thereafter total $0.1 million. Cash payments of interest amounted to $14.8 million in 2015, $13.0 million in 2014 and $16.1 million in 2013. A note agreement and guaranty (“Prudential Agreement”) was originally entered into in October 2005 with the Prudential Insurance Company of America, and certain other purchasers, with interest at 6.84% and a maturity date of October 25, 2017. The remaining obligation under the Prudential Agreement has a final payment of $50 million due on October 25, 2017. At the noteholders' election, certain prepayments may also be required in connection with certain asset dispositions or financings. The notes may not otherwise be prepaid without a premium, under certain market conditions. The Prudential Agreement contains customary terms, as well as affirmative covenants, negative covenants, and events of default comparable to those in our current principal credit facility (as described below). The Prudential Agreement has been amended a number of times, most recently in June 2015, in order to maintain terms comparable to our current principal credit facility. For disclosure purposes, we are required to measure the fair value of outstanding debt on a recurring basis. As of December 31, 2015, the fair value of this debt was approximately $54.6 million, and was measured using active market interest rates, which would be considered Level 2 for fair value measurement purposes. On June 18, 2015, we entered into a $400 million, unsecured Five-Year Revolving Credit Facility Agreement (“Credit Agreement”), under which $215 million of borrowings were outstanding as of December 31, 2015. The Credit Agreement replaced a previous $330 million five-year Credit Agreement entered into 2013. The applicable interest rate for borrowings under the Credit Agreement is, as it was under the former agreement, LIBOR plus a spread, based on our leverage ratio at the time of borrowing. At the time of the last borrowing on December 16, 2015, the spread was 1.375%. The spread is based on a pricing grid, which ranges from 1.250% to 1.750%, based on our leverage ratio. Our ability to borrow additional amounts under the Credit Agreement is conditional upon the absence of any defaults, as well as the absence of any material adverse change (as defined in the Credit Agreement). Based on our maximum leverage ratio and our Consolidated EBITDA (as defined in the Credit Agreement), and without modification to any other credit agreements, as of December 31, 2015, we would have been able to borrow an additional $185 million under the Credit Agreement. On July 16, 2010, we entered into interest rate hedging transactions that had the effect of fixing the LIBOR portion of the effective interest rate (before addition of the spread) on $105 million of the indebtedness drawn under the Credit Agreement at the rate of 2.04%,plus the applicable spread. The agreement expired on July 16, 2015. On May 20, 2013, we entered into interest rate hedging transactions for the period July 16, 2015 through March 16, 2018. These transactions have the effect of fixing the LIBOR portion of the effective interest rate (before addition of the spread) on $110 million of indebtedness drawn under the Credit Agreement at the rate of 1.414% during this period. Under the terms of these transactions, we pay the fixed rate of 1.414% and the counterparties pay a floating rate based on the one-month LIBOR rate at each monthly calculation date, which on December 16, 2015 was 0.350%. The net effect is to fix the effective interest rate on $110 million of indebtedness at 1.414%, plus the applicable spread, during the swap period. On December 16, 2015, the all-in-rate on the $110 million of debt was 2.789%. On July 16, 2015, we entered into interest rate hedging transactions for the period March 16, 2018 through June 16, 2020. These transactions have the effect of fixing the LIBOR portion of the effective interest rate (before addition of the spread) on $120 million of indebtedness drawn under the Credit Agreement at the rate of 2.43% during the period. Under the term of these transactions, we pay the fixed rate of 2.43% and the counterparties pay a floating rate based on the one-month LIBOR rate at each monthly calculation date, which on December 16, 2015 was 0.35%. The net effect is to fix the effective interest rate on $120 million of indebtedness at 2.43%, plus the applicable spread, during the swap period. These interest rate swaps are accounted for as a hedge of future cash flows, as further described in Note 15 of the Notes to Consolidated Financial Statements. No cash collateral was received or pledged in relation to the swap agreements. Under the Credit Agreement and Prudential Agreement, we are currently required to maintain a leverage ratio (as defined in the agreements) of not greater than 3.50 to 1.00 and minimum interest coverage (as defined) of 3.00 to 1.00. As of December 31, 2015, our leverage ratio was 1.27 to 1.00 and our interest coverage ratio was 13.39 to 1.00. We may purchase our Common Stock or pay dividends to the extent our leverage ratio remains at or below 3.50 to 1.00, and may make acquisitions with cash provided our leverage ratio would not exceed 3.50 to 1.00 after giving pro forma effect to the acquisition. Indebtedness under each of the Prudential Agreement and the Credit Agreement is ranked equally in right of payment to all unsecured senior debt. We were in compliance with all debt covenants as of December 31, 2015.

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- Definition The entire disclosure for long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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