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Debt
12 Months Ended
Dec. 31, 2012
Debt Disclosure [Abstract]  
Debt
Debt
Long-term debt on the Consolidated Balance Sheets is summarized as follows:
 
 
December 31,
(Thousands)
 
2012
 
2011
Revolving credit agreement
 
$
30,000

 
$
25,000

Fixed rate industrial development revenue bonds payable in annual installments through 2021
 
7,158

 
7,705

Variable rate industrial development revenue bonds payable in 2016
 
8,305

 
8,305

Total outstanding
 
45,463

 
41,010

Current portion of long-term debt
 
(583
)
 
(547
)
Total
 
$
44,880

 
$
40,463


Maturities on long-term debt instruments as of December 31, 2012 are as follows:
2013
$
583

2014
613

2015
653

2016
38,998

2017
733

Thereafter
3,883

 
 
Total
$
45,463

 
 

In July 2011, the Company entered into an Amended and Restated Credit Agreement with six financial institutions that expires in 2016 and provides for a $325.0 million revolving credit facility comprised of sub-facilities for revolving loans, swing line loans, letters of credit and foreign borrowings. The credit agreement also provides for an uncommitted incremental facility whereby, under certain conditions, the Company may be able to borrow additional term loans in an aggregate amount not to exceed $100.0 million. The credit agreement is secured by substantially all of the assets of the Company and its direct subsidiaries, with the exception of non-mining real property and certain other assets. The credit agreement allows the Company to borrow money at a premium over LIBOR or the prime rate and at varying maturities. The premium resets quarterly according to the terms and conditions available under the agreement. At December 31, 2012 there was $38.2 million outstanding against the letters of credit sub-facility. The Company pays a variable commitment fee that resets quarterly (0.25% as of December 31, 2012) of the available and unborrowed amounts under the revolving credit line.
The credit agreement is subject to restrictive covenants including incurring additional indebtedness, acquisition limits, dividend declarations and stock repurchases. In addition, the agreement includes covenants over a maximum leverage ratio and a minimum fixed charge coverage ratio. The Company was in compliance with all of its debt covenants as of December 31, 2012.
The following table summarizes the Company’s short-term lines of credit. Amounts shown as outstanding are included in short-term debt on the Consolidated Balance Sheets.
 
 
December 31, 2012
 
December 31, 2011
(Thousands)
 
Total
 
Outstanding
 
Available
 
Total
 
Outstanding
 
Available
Domestic
 
$
256,799

 
$
8,000

 
$
248,799

 
$
262,724

 
$
3,200

 
$
259,524

Foreign
 
15,266

 
1,415

 
13,851

 
16,149

 
770

 
15,379

Precious metal
 
39,435

 
39,435

 

 
36,427

 
36,427

 

Total
 
$
311,500

 
$
48,850

 
$
262,650

 
$
315,300

 
$
40,397

 
$
274,903


While the available borrowings under the individual existing credit lines total $262.7 million, the covenants in the domestic credit agreement restrict the aggregate available borrowings to $189.5 million as of December 31, 2012.
The domestic line is committed and includes all sub-facilities in the $325.0 million maximum borrowing under the revolving credit agreement. The Company has various foreign lines of credit, one of which for 3.5 million euros is committed and secured. The remaining foreign lines are uncommitted, unsecured and renewed annually. The average interest rate on short-term debt was 2.43% and 2.94% as of December 31, 2012 and 2011, respectively.
In April 2011, the Company entered into an agreement with the Toledo-Lucas County Port Authority and the Dayton–Montgomery County Port Authority, who co-issued $8.0 million in taxable development revenue bonds, with a fixed amortization term that will mature in 2021. The interest rate on these bonds is fixed at 4.9% and the unamortized balance of the bonds was $7.2 million at December 31, 2012.
In November 1996, the Company entered into an agreement with the Lorain Port Authority, Ohio to issue $8.3 million in variable rate industrial revenue bonds, maturing in 2016. The variable rate ranged from 0.26% to 0.46% in 2012 and from 0.20% to 0.50% in 2011.