12. Financial Instruments

Long-term debt, principally to banks and bondholders, consists of:

(in thousands, except interest rates)	2012	2011

Convertible notes, par value $28,437, issued in March 2006 with fixed contractual interest rates of 2.25%, due in 2026	$28,261	$27,228

Private placement with a fixed interest rate of 6.84%, due in 2013 through 2017	150,000	150,000

Credit agreement with borrowings outstanding at an end of period interest rate of 3.92% in 2012 and 3.61% in 2011, due in 2015	132,000	187,000

Various notes and mortgages relative to operations principally outside the United States, at an average end of period rate of 3.06% in 2012 and 3.05% in 2011, due in varying amounts through 2021	8,892	10,160

Long-term debt	319,153	374,388

Less: current portion	(83,276)	(1,263)

Long-term debt, net of current portion	$235,877	$373,125

Principal payments due on long-term debt are: 2013, $83.3 million; 2014, $3.8 million; 2015, $182.0 million; 2017, $50.0 million. Total principal payments in 2016, 2018 and thereafter total $0.1 million. Cash payments of interest amounted to $18.4 million in 2012, $20.2 million in 2011, and $17.4 million in 2010.

The note agreement and guaranty ("the Prudential agreement") was entered into in October 2005 and was amended and restated as of July 16, 2010, 2010, with the Prudential Insurance Company of America, and certain other purchasers, in an aggregate principal amount of $150 million, with interest at 6.84% and a maturity date of October 25, 2017. There are mandatory payments of $50 million on October 25, 2013, and October 25, 2015. 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 note agreement contains customary terms, as well as affirmative covenants, negative covenants, and events of default comparable to those in 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, 2012, the fair value of the note agreement was approximately $171.9 million, which was measured using active market interest rates.

On July 16, 2010, we entered into a $390 million unsecured five-year revolving credit facility agreement under which $132 million of borrowings were outstanding as of December 31, 2012. The applicable interest rate for borrowings under the agreement, as well as under the former agreement, is LIBOR plus a spread, based on our leverage ratio at the time of borrowing.

Our ability to borrow additional amounts under the agreement is conditional upon the absence of any defaults, as well as the absence of any material adverse change. Based on our maximum leverage ratio and our consolidated EBITDA (as defined in the agreement), and without modification to any other credit agreements as of December 31, 2012, we would have been able to borrow an additional $258 million under our agreement.

Also on July 16, 2010, we entered into interest rate hedging transactions that have 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 new agreement at the rate of 2.04% for the next five years. Under the terms of these transactions, we pay the fixed rate of 2.04% and the counterparties pay a floating rate based on the three-month LIBOR rate at each quarterly calculation date, which on October 12, 2012 was 0.34%. The net effect is to fix the effective interest rate on $105 million of indebtedness at 2.04%, plus the applicable spread, until these swap agreements expire on July 16, 2015. On October 16, 2012, the applicable spread was 2.25%, yielding an effective annual rate of 4.29%. This interest rate swap is accounted for as a hedge of future cash flows, as further described in Note 13 of the Notes to Consolidated Financial Statements.

We are currently required to maintain a leverage ratio of not greater than 3.50 to 1.00 and minimum interest coverage of 3.00 to 1.00 under the new credit agreement and the Prudential agreement.

As of December 31, 2012, our leverage ratio was 1.06 to 1.00 and our interest coverage ratio was 13.29 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 3.00 to 1.00 after giving pro forma effect to the acquisition.

On January 25, 2013, the Company announced the redemption, at 100 percent of principal, of all remaining 2.25% Convertible Senior Notes due 2026 ("the Notes"). As of December 31, 2012, the fair value of the balance of the Notes outstanding was approximately $28.4 million, which was measured using quoted prices in active markets.

Holders were entitled to convert their Notes at any time on or after February 15, 2013. Before February 15, 2013, a holder may have converted Notes during the five-business-day period immediately after any period of five consecutive trading days in which the trading price per Note for each of such five days was less than 103% of the product of the last reported sale price of our Class A common stock and the conversion rate on such day. Additionally, holders were entitled to convert prior to February 15, 2013, if we elected to distribute to all or substantially all of our Class A shareholders (a) rights or warrants to purchase shares of Class A common stock for less than their trading value, or (b) assets, debt securities, or rights to purchase securities, which distribution has a per share value exceeding 15% of the current trading value of the Class A common stock.

Converting holders are entitled to receive, upon conversion of their Notes, (1) an amount in cash equal to the lesser of the principal amount of the Note and the Note's conversion value, and (2) if the conversion value of the Note exceeds the principal amount, shares of our Class A common stock in respect of the excess conversion value. The conversion rate of the Notes (subject to adjustment upon the occurrence of certain events) is 23.2078 shares per $1,000 principal amount of Notes (equivalent to a conversion price of $43.09 per share of Class A common stock). The exact amount payable upon conversion would be determined in accordance with the terms of the indenture pursuant to which the Notes were issued and will be based on a daily conversion value calculated on a proportionate basis by reference to the volume-weighted average price of our Class A common stock for each day during a twenty-five day period relating to the conversion.

In connection with the sale of the Notes, we entered into hedge and warrant transactions with respect to our Class A common stock. These transactions are intended to reduce the potential dilution upon conversion of the Notes by providing us with the option, subject to certain exceptions, to acquire shares in an amount equal to the number of shares that we would be required to deliver upon conversion of the Notes. These transactions had the economic effect to the Company of increasing the conversion price of the Notes to $52.25 per share.

Pursuant to the hedge transactions, if we deliver notice to the counterparties of any conversion of the Notes on or prior to March 15, 2013, the counterparties are in the aggregate obligated to deliver to the Company the number of shares of Class A common stock that we are obligated to deliver to the holders of the Notes with respect to such conversion, exclusive of any shares deliverable by the Company by reason of any additional (or "make whole") premium relating to the Notes or by reason of any election by the Company to unilaterally increase the conversion rate. The Note hedge and warrant transactions had a net cost of $14.7 million.

Pursuant to the warrant transactions, we sold a total of 4.1 million warrants, each exercisable to buy a single share of Class A common stock at an initial strike price of $52.25 per share. The warrants are American-style warrants (exercisable at any time), and expire over a period of sixty trading days beginning on September 15, 2013. If the warrants are exercised when they expire, we may choose either net cash or net share settlement. If the warrants are exercised before they expire, they must be net share settled. If we elect to net cash settle the warrants, we will pay cash in an amount equal to, for each exercise of warrants, (i) the number of warrants exercised multiplied by (ii) the excess of the volume weighted average price of our Class A common stock on the expiration date of such warrants (the "settlement price") over the strike price. Under net share settlement, we will deliver to the warrant holders a number of shares of our Class A common stock equal to, for each exercise of warrants, the amount payable upon net cash settlement divided by the settlement price.

As of December 31, 2012, the carrying amounts of the debt and equity components of our bifurcated convertible debt instrument were $28.2 million and $25.5 million, respectively. The equity component is included in additional paid-in capital in the equity section of the balance sheet.

The convertible feature of the Notes, the convertible note hedge, and the warrant transactions each meet the requirements of the applicable accounting guidance to be accounted for as equity instruments. As such, the convertible feature of the Notes has not been accounted for as a derivative (which would be marked to market each reporting period) and in the event the debt is converted, no gain or loss is recognized, as the cash payment of principal reduces the recorded liability and the issuance of common shares would be recorded in stockholders' equity.

In addition, the amount paid for the call option and the premium received for the warrant were recorded as additional paid-in capital in the accompanying consolidated balance sheet and are not accounted for as derivatives (which would be marked to market each reporting period). Incremental net shares for the convertible note feature and the warrant agreement will be included in future diluted earnings per share calculations for those periods in which our average common stock price exceeds $43.09 per share in the case of the Senior Notes and $49.20 per share in the case of the warrants. The purchased call option is antidilutive and is excluded from the diluted earnings per share calculation.

Indebtedness under the Prudential note and guaranty agreement, the convertible Notes, 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, 2012.