Long-term Debt

Total long-term debt consists of the following (in millions):



	June 30,		December 31,
	2012		2011
Amounts borrowed (Credit Facility)	$	47.5	$	62.0
Obligations under capital leases	1.2		1.1
Total long-term debt	$	48.7	$	63.1

We have a revolving credit facility (“Credit Facility”) with a capacity of $200 million, which also provides for up to an additional $100 million of lenders' revolving commitments, subject to certain provisions. On May 5, 2011, we entered into a fourth amendment to our Credit Facility (the "Fourth Amendment"), which extended our Credit Facility from February 2014 to May 2016 and reduced the unused facility fees and the margin on LIBOR or CDOR borrowings. The margin added to LIBOR or CDOR is a range of 175 to 225 basis points, down from a range of 275 to 350 basis points. The Fourth Amendment ties the LIBOR or CDOR margin to the amount of available credit under the revolving Credit Facility, instead of the achievement of certain operating results as defined in the original agreement. At the date of signing the Fourth Amendment, we incurred fees of approximately $0.7 million, which are being amortized over the term of the amendment.

All obligations under the Credit Facility are secured by first priority liens upon substantially all of our present and future assets. The terms of the Credit Facility permit prepayment without penalty at any time (subject to customary breakage costs with respect to LIBOR or CDOR based loans prepaid prior to the end of an interest period).

The Credit Facility contains restrictive covenants, including among others, limitations on dividends and other restricted payments, other indebtedness, liens, investments and acquisitions and certain asset sales. As of June 30, 2012, we were in compliance with all of the covenants under the Credit Facility.

Amounts borrowed, outstanding letters of credit and amounts available to borrow, net of certain reserves required under the Credit Facility, were as follows (in millions):



	June 30,		December 31,
	2012		2011
Amounts borrowed	$	47.5	$	62.0
Outstanding letters of credit	$	20.9	$	23.7
Amounts available to borrow	$	121.4	$	106.2

Average borrowings during the three and six months ended June 30, 2012 were $40.5 million and $32.6 million, respectively, with amounts borrowed, at any one time outstanding, ranging from zero to $91.5 million. For the three and six months ended June 30, 2011, average borrowings were $20.2 million and $10.1 million, respectively, with amounts borrowed, at any one time outstanding, ranging from zero to $76.1 million.

Our weighted-average interest rate was calculated based on our daily cost of borrowing, which was computed on a blend of prime and LIBOR rates. The weighted-average interest rate on our revolving credit facility for the three and six months ended June 30, 2012 was 2.1%, compared to 2.3% for the same periods in 2011. We paid total unused facility fees and letter of credit participation fees, which are included in interest expense, of $0.5 million during the six months ended June 30, 2012 compared to $0.8 million for the same period in 2011. Amortization of debt issuance costs is included in interest expense. Unamortized debt issuance costs were $1.7 million as of June 30, 2012 and $1.9 million as of December 31, 2011.