Note 10—Debt

The Company's debt obligations consist of the following as of December 31, (in millions):

	2014			2013
US Dollar revolving loan under the Amended Credit Agreement	$	112.5		$	112.5
US Dollar notes under the Note Purchase Agreement		240.0			240.0
Capital lease obligations and other loans		2.5			2.5

Total debt		355.0			355.0
Current portion of long-term debt		(0.8	)		(0.7	)

Total long-term debt, less current portion	$	354.2		$	354.3

In May 2011, the Company entered into an amendment to, and restatement of, its credit agreement, referred to as the Amended Credit Agreement. The Amended Credit Agreement provides a maximum commitment on the Company's revolving credit line of $250.0 million and a maturity date of May 2016. Borrowings under the revolving credit line of the Amended Credit Agreement accrue interest, at the Company's option, at either (a) the greatest of (i) the prime rate, (ii) the federal funds rate plus 0.50% and (iii) adjusted LIBOR plus 1.00% or (b) LIBOR, plus margins ranging from 0.80% to 1.65%. There is also a facility fee ranging from 0.20% to 0.35%.

Borrowings under the Amended Credit Agreement are secured by guarantees from certain material subsidiaries, as defined in the Amended Credit Agreement, and Bruker Energy & Supercon Technologies, Inc. The Amended Credit Agreement also requires the Company to maintain certain financial ratios related to maximum leverage and minimum interest coverage. Specifically, the Company's leverage ratio cannot exceed 3.0 and the Company's interest coverage ratio cannot be less than 3.0. As of December 31, 2014, the Company was in compliance with the covenants of the Amended Credit Agreement. In addition to the financial ratios, the Amended Credit Agreement restricts, among other things, the Company's ability to do the following: make certain payments; incur additional debt; incur certain liens; make certain investments, including derivative agreements; merge, consolidate, sell or transfer all or substantially all of its assets; and enter into certain transactions with affiliates. Failure to comply with any of these restrictions or covenants may result in an event of default on the Amended Credit Agreement, which could permit acceleration of the debt and require the Company to prepay the debt before its scheduled due date.

The following is a summary of the maximum commitments and the net amounts available to the Company under the revolving loan arrangements at December 31, 2014 (in millions):

	Weighted Average Interest Rate			Total Amount Committed by Lenders		Outstanding Borrowings		Outstanding Letters of Credit		Total Amount Available
Amended Credit Agreement		1.3	%	$	250.0	$	112.5	$	6.6	$	130.9
Other revolving loans		—			231.0		—		143.7		87.3

Total revolving loans				$	481.0	$	112.5	$	150.3	$	218.2

Other revolving loans are with various financial institutions located primarily in Germany, Switzerland and France. The Company's other revolving lines of credit are typically due upon demand with interest payable monthly. Certain of these lines of credit are unsecured while others are secured by the accounts receivable and inventory of the related subsidiary.

In January 2012, the Company entered into a note purchase agreement, referred to as the Note Purchase Agreement, with a group of accredited institutional investors. Pursuant to the Note Purchase Agreement, the Company issued and sold $240.0 million of senior notes, referred to as the Senior Notes, which consist of the following:

•	$20 million 3.16% Series 2012A Senior Notes, Tranche A, due January 18, 2017;
•	$15 million 3.74% Series 2012A Senior Notes, Tranche B, due January 18, 2019;
•	$105 million 4.31% Series 2012A Senior Notes, Tranche C, due January 18, 2022; and
•	$100 million 4.46% Series 2012A Senior Notes, Tranche D, due January 18, 2024.

Under the terms of the Note Purchase Agreement, the Company may issue and sell additional senior notes up to an aggregate principal amount of $600 million, subject to certain conditions. Interest on the Senior Notes is payable semi-annually on January 18 and July 18 of each year. The Senior Notes are unsecured obligations of the Company and are fully and unconditionally guaranteed by certain of the Company's direct and indirect subsidiaries. The Senior Notes rank pari passu in right of repayment with the Company's other senior unsecured indebtedness. The Company may prepay some or all of the Senior Notes at any time in an amount not less than 10% of the original aggregate principal amount of the Senior Notes to be prepaid, at a price equal to the sum of (a) 100% of the principal amount thereof, plus accrued and unpaid interest, and (b) the applicable make-whole amount, upon not less than 30 and no more than 60 days written notice to the holders of the Senior Notes. In the event of a change in control of the Company, as defined in the Note Purchase Agreement, the Company may be required to prepay the Notes at a price equal to 100% of the principal amount thereof, plus accrued and unpaid interest.

The Note Purchase Agreement contains affirmative covenants, including, without limitation, maintenance of corporate existence, compliance with laws, maintenance of insurance and properties, payment of taxes, addition of subsidiary guarantors and furnishing notices and other information. The Note Purchase Agreement also contains certain restrictive covenants that restrict the Company's ability to, among other things, incur liens, transfer or sell assets, engage in certain mergers and consolidations and enter into transactions with affiliates. The Note Purchase Agreement also includes customary representations and warranties and events of default. In the case of an event of default arising from specified events of bankruptcy or insolvency, all outstanding Senior Notes will become due and payable immediately without further action or notice. In the case of payment events of defaults, any holder of Senior Notes affected thereby may declare all Senior Notes held by it due and payable immediately. In the case of any other event of default, a majority of the holders of the Senior Notes may declare all the Senior Notes to be due and payable immediately. Pursuant to the Note Purchase Agreement, so long as any Senior Notes are outstanding the Company will not permit (i) its leverage ratio, as determined pursuant to the Note Purchase Agreement, as of the end of any fiscal quarter to exceed 3.50 to 1.00, (ii) its interest coverage ratio as determined pursuant to the Note Purchase Agreement as of the end of any fiscal quarter for any period of four consecutive fiscal quarters to be less than 2.50 to 1 or (iii) priority debt at any time to exceed 25% of consolidated net worth, as determined pursuant to the Note Purchase Agreement.

As of December 31, 2014, the Company was in compliance with the covenants of the Note Purchase Agreement.

Annual maturities of long-term debt outstanding at December 31, 2014 are as follows (in millions):

2015	$	0.8
2016		113.3
2017		20.1
2018		0.2
2019		15.2
Thereafter		205.4

Total	$	355.0

Interest expense for the years ended December 31, 2014, 2013 and 2012, was $13.3 million, $13.4 million and $14.3 million, respectively.