Commitments and Contingencies

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

(6) Commitments and Contingencies

Credit Facilities and Commitments

We have a $230,000 unsecured revolving credit facility which expires December 31, 2016. The facility includes a $45,000 letter of credit subfacility. At March 31, 2015 and 2014, there were undrawn letters of credit outstanding under this facility with a face amount of $37,233 and $34,376, respectively, of which there were loans outstanding under this facility of $125,000 and $0, respectively. We have the right to prepay this debt and intend to repay this amount using cash within the next twelve months; therefore, we have classified the debt as a current liability. Loans under the facility are subject to certain financial covenants, and we are currently in compliance with these covenants.

Loans under the facility, other than swingline loans, bear interest at a rate per annum equal to, at our election, either (i) LIBOR for an interest period of one month, reset daily, plus 0.875%, or (ii) LIBOR for an interest period of one, two, three, six or twelve months as selected by us, reset at the end of the selected interest period, plus 0.875%. The outstanding loan amount at March 31, 2015 bears interest at a rate per annum equal to option (i) noted above. Given the LIBOR rate at March 31, 2015, our effective per annum interest rate at quarter end was approximately 1.1%. Swingline loans bear interest at a rate per annum equal to LIBOR for an interest period of one month, reset daily, plus 0.875%. We pay a commitment fee for the unused portion of the facility of 0.10% per annum if the average quarterly utilization of the facility is 20% or more, or 0.125% per annum if the average quarterly utilization of the facility is less than 20%. For each letter of credit issued under the facility, we pay a commission fee on the amount available to be drawn under such letter of credit equal to 0.875% per annum and, subject to certain exceptions, an issuance fee equal to 0.075% of the face amount of such letter of credit.

Legal Contingencies

The nature of our potential exposure to legal contingencies is described in our 2014 annual report on Form 10-K in Note 10 of the Notes to Consolidated Financial Statements. As of March 31, 2015, there were no litigation matters that we consider to be probable or reasonably possible to have a material adverse outcome.