Long-Term Debt and Capital Lease Obligations	12 Months Ended
Dec. 31, 2012
Long-Term Debt and Capital Lease Obligations.
Long-Term Debt and Capital Lease Obligations	5. Long-Term Debt and Capital Lease Obligations On April 29, 2009, the Company entered into a credit facility with Deutsche Bank AG, Citibank, N.A., and Bank of America, N.A. that provided for an $80.0 million Revolving Loan Commitment for the issuance of letters of credit for the account of the Company with a sublimit of up to $30.0 million for revolving loans (the "2009 Credit Facility"). Under the 2009 Credit Facility, the annual interest rate on Revolving Loan borrowings was equal to (i) in the case of U.S. dollar denominated loans, the sum of a borrowing margin of 2.25 percent plus the higher of the prime rate or one-half of one percent in excess of the overnight "federal funds" rate, or (ii) in the case of Eurodollar denominated loans, the sum of a borrowing margin of 3.25 percent plus the Eurodollar rate for the selected interest period. On April 28, 2010, the Company entered into an amendment to the 2009 Credit Facility with Deutsche Bank AG, Citibank, N.A., and Bank of America, N.A. that provided for an $80.0 million Revolving Loan Commitment for the issuance of letters of credit for the account of the Company with a sublimit of up to $30.0 million for revolving loans (the "2010 Credit Facility"). Under the 2010 Credit Facility, the annual interest rate on Revolving Loan borrowings was equal to (i) in the case of U.S. dollar denominated loans, the sum of a borrowing margin of 1.75 percent plus the higher of the prime rate or one-half of one percent in excess of the overnight "federal funds" rate, or (ii) in the case of Eurodollar denominated loans, the sum of a borrowing margin of 2.75 percent plus the Eurodollar rate for the selected interest period. The Company had the option to borrow in U.S. dollar denominated loans or Eurodollar denominated loans at its discretion. Letters of Credit issued under the Revolving Loan Commitment bore interest at the rate of 2.875 percent. The commitment commission on the 2010 Credit Facility was 0.50 percent of the unused Revolving Loan Commitment. On December 9, 2011, the Company entered into a Senior Secured Revolving Credit Facility Credit Agreement with Citibank, N.A., Wells Fargo Bank, N.A., Bank of America, N.A., and U.S. Bank, N.A. that provides for up to $230.0 million of revolving loans with a sublimit of up to $70.0 million for the issuance of letters of credit for the account of the Company (the "2011 Credit Facility"). At such point, the 2010 Credit Facility was terminated. The 2011 Credit Facility is guaranteed by substantially all of the subsidiaries of the Company and is secured by substantially all of the assets of the Company and the subsidiary guarantors. The 2011 Credit Facility will mature on December 9, 2014. Under the 2011 Credit Facility, the annual interest rate on Revolving Loan borrowings is equal to (i) in the case of U.S. dollar denominated loans, the sum of a borrowing margin of 0.75 percent plus the higher of the prime rate, one-half of one percent in excess of the overnight "federal funds" rate, or the Eurodollar rate for one month plus 1.00 percent, or (ii) in the case of Eurodollar denominated loans, the sum of a borrowing margin of 1.75 percent plus the Eurodollar rate for the selected interest period. The Company has the option to borrow in U.S. dollar denominated loans or Eurodollar denominated loans at its discretion. Letters of Credit issued under the Revolving Loan Commitment bear interest at the rate of 1.875 percent. The commitment commission on the 2011 Credit Facility is 0.375 percent of the unused Revolving Loan Commitment. The 2011 Credit Facility contains covenants that limit management's discretion in operating the Company's business by restricting or limiting the Company's ability, among other things, to: • incur or guarantee additional indebtedness or issue preferred or redeemable stock; • pay dividends and make other distributions; • repurchase equity interests; • make certain advances, investments and loans; • enter into sale and leaseback transactions; • create liens; • sell and otherwise dispose of assets; • acquire or merge or consolidate with another company; and • enter into some types of transactions with affiliates. There were $68.1 million and $32.0 million of letters of credit outstanding at December 31, 2011 and 2012, respectively, and no Revolving Loan borrowings or capital lease obligations at December 31, 2011 or December 31, 2012.

5. Long-Term Debt and Capital Lease Obligations

On April 29, 2009, the Company entered into a credit facility with Deutsche Bank AG, Citibank, N.A., and Bank of America, N.A. that provided for an $80.0 million Revolving Loan Commitment for the issuance of letters of credit for the account of the Company with a sublimit of up to $30.0 million for revolving loans (the "2009 Credit Facility"). Under the 2009 Credit Facility, the annual interest rate on Revolving Loan borrowings was equal to (i) in the case of U.S. dollar denominated loans, the sum of a borrowing margin of 2.25 percent plus the higher of the prime rate or one-half of one percent in excess of the overnight "federal funds" rate, or (ii) in the case of Eurodollar denominated loans, the sum of a borrowing margin of 3.25 percent plus the Eurodollar rate for the selected interest period.

On April 28, 2010, the Company entered into an amendment to the 2009 Credit Facility with Deutsche Bank AG, Citibank, N.A., and Bank of America, N.A. that provided for an $80.0 million Revolving Loan Commitment for the issuance of letters of credit for the account of the Company with a sublimit of up to $30.0 million for revolving loans (the "2010 Credit Facility").

Under the 2010 Credit Facility, the annual interest rate on Revolving Loan borrowings was equal to (i) in the case of U.S. dollar denominated loans, the sum of a borrowing margin of 1.75 percent plus the higher of the prime rate or one-half of one percent in excess of the overnight "federal funds" rate, or (ii) in the case of Eurodollar denominated loans, the sum of a borrowing margin of 2.75 percent plus the Eurodollar rate for the selected interest period. The Company had the option to borrow in U.S. dollar denominated loans or Eurodollar denominated loans at its discretion. Letters of Credit issued under the Revolving Loan Commitment bore interest at the rate of 2.875 percent. The commitment commission on the 2010 Credit Facility was 0.50 percent of the unused Revolving Loan Commitment.

On December 9, 2011, the Company entered into a Senior Secured Revolving Credit Facility Credit Agreement with Citibank, N.A., Wells Fargo Bank, N.A., Bank of America, N.A., and U.S. Bank, N.A. that provides for up to $230.0 million of revolving loans with a sublimit of up to $70.0 million for the issuance of letters of credit for the account of the Company (the "2011 Credit Facility"). At such point, the 2010 Credit Facility was terminated. The 2011 Credit Facility is guaranteed by substantially all of the subsidiaries of the Company and is secured by substantially all of the assets of the Company and the subsidiary guarantors. The 2011 Credit Facility will mature on December 9, 2014.

Under the 2011 Credit Facility, the annual interest rate on Revolving Loan borrowings is equal to (i) in the case of U.S. dollar denominated loans, the sum of a borrowing margin of 0.75 percent plus the higher of the prime rate, one-half of one percent in excess of the overnight "federal funds" rate, or the Eurodollar rate for one month plus 1.00 percent, or (ii) in the case of Eurodollar denominated loans, the sum of a borrowing margin of 1.75 percent plus the Eurodollar rate for the selected interest period. The Company has the option to borrow in U.S. dollar denominated loans or Eurodollar denominated loans at its discretion. Letters of Credit issued under the Revolving Loan Commitment bear interest at the rate of 1.875 percent. The commitment commission on the 2011 Credit Facility is 0.375 percent of the unused Revolving Loan Commitment.

The 2011 Credit Facility contains covenants that limit management's discretion in operating the Company's business by restricting or limiting the Company's ability, among other things, to:

•

incur or guarantee additional indebtedness or issue preferred or redeemable stock;

•

pay dividends and make other distributions;

•

repurchase equity interests;

•

make certain advances, investments and loans;

•

enter into sale and leaseback transactions;

•

create liens;

•

sell and otherwise dispose of assets;

•

acquire or merge or consolidate with another company; and

•

enter into some types of transactions with affiliates.

There were $68.1 million and $32.0 million of letters of credit outstanding at December 31, 2011 and 2012, respectively, and no Revolving Loan borrowings or capital lease obligations at December 31, 2011 or December 31, 2012.