8. Debt

The Company has revolving lines of credit with various banks in the United States and Europe. Total available credit at December 31, 2013, was $304.4 million, including revolving credit lines and an irrevocable standby letter of credit in support of various insurance deductibles.

The Company’s primary credit facility is a revolving line of credit with $300.0 million in available credit. This credit facility will expire in July 2017. Amounts borrowed under this credit facility will bear interest at an annual rate equal to either, at the Company’s option, (a) the rate for Eurocurrency deposits for the corresponding deposits of U.S. dollars appearing on Reuters LIBOR01screen page (the “LIBOR Rate”), adjusted for any reserve requirement in effect, plus a spread of 0.60% to 1.45%, determined quarterly based on the Company’s leverage ratio (at December 31, 2013, the LIBOR Rate was 0.77%), or (b) a base rate, plus a spread of 0.00% to 0.45%, determined quarterly based on the Company’s leverage ratio. The base rate is defined in a manner such that it will not be less than the LIBOR Rate. The Company will pay fees for standby letters of credit at an annual rate equal to the LIBOR Rate plus the applicable spread described above, and will pay market-based fees for commercial letters of credit. The Company is required to pay an annual facility fee of 0.15% to 0.30% of the available commitments under the credit agreement, regardless of usage, with the applicable fee determined on a quarterly basis based on the Company’s leverage ratio. The Company was also required to pay customary fees as specified in a separate fee agreement between the Company and Wells Fargo Bank, National Association, in its capacity as the Agent under the credit agreement.

The Company’s borrowing capacity under other revolving credit lines and a term note totaled $4.5 million at December 31, 2013. The other revolving credit lines and term note charge interest ranging from 1.084% to 7.25% and have maturity dates from March 2014 to December 2014. The Company had $0.1 million and $0.2 million outstanding at December 31, 2013 and 2012, respectively.

The Company and its subsidiaries are required to comply with various affirmative and negative covenants. The covenants include provisions that would limit the availability of funds as a result of a material adverse change to the Company’s financial position or results of operations. The Company was in compliance with its financial covenants under the loan agreement as of December 31, 2013.

The Company incurs interest costs, which include interest, maintenance fees and bank charges. The amount of costs incurred, capitalized, and expensed for the years ended December 31, 2013, 2012 and 2011, consisted of the following:

(in thousands)

	Years Ended December 31,
	2013			2012			2011

Interest costs incurred	$	1,019		$	909		$	661
Less: Interest capitalized	(118		)	(116		)	(88		)
Interest expense	$	901		$	793		$	573