XML 35 R35.htm IDEA: XBRL DOCUMENT v2.4.0.6
Long-Term Debt (Narrative) (Details) (USD $)
 0 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended
Jan. 23, 2012
Mar. 31, 2012
Mar. 31, 2011
Jan. 23, 2012
6.25% Senior Notes, Due 2037 [Member]
Mar. 31, 2012
6.25% Senior Notes, Due 2037 [Member]
Mar. 31, 2012
6.6% Senior Notes, due 2018
Apr. 13, 2012
AR Credit Facility [Member]
Mar. 31, 2012
Including Acquisition Bridge Debt [Member]
Mar. 31, 2012
Excluding Acquisition Bridge Debt [Member]
Mar. 31, 2012
Maximum [Member]
Mar. 31, 2012
Maximum [Member]
Unrestricted Cash Reduction [Member]
Mar. 31, 2012
Minimum [Member]
Unrestricted Cash Reduction [Member]
Debt Instrument [Line Items]                        
Senior notes debt outstanding repurchased after year end       $ 20,000,000                
Percent of par value paid to repurchase senior notes       $ 90.75                
Revolving credit facility borrowings to finance repurchase of senior notes after year end       18,200,000                
Debt instrument maturity date 2037       2037 2018 April 20, 2013          
Interest rate on notes 6.25%       6.25% 6.60%            
Debt covenant  

The Credit Agreement and the AR Credit Facility require the Corporation's ratio of consolidated debt to consolidated earnings before interest, taxes, depreciation, depletion and amortization (EBITDA), as defined, for the trailing twelve month period (the "Ratio") to not exceed 3.50x as of the end of any fiscal quarter, provided that the Corporation may exclude from the Ratio debt incurred in connection with certain acquisitions for a period of 180 days so long as the Corporation maintains specified ratings on its long-term unsecured debt and the Ratio calculated without such exclusion does not exceed 3.75x. Additionally, if no amounts are outstanding under both the Revolving Facility and the AR Credit Facility, consolidated debt, including debt guaranteed by the Corporation, may be reduced by the Corporation's unrestricted cash and cash equivalents in excess of $50,000,000, such reduction not to exceed $200,000,000, for purposes of the covenant calculation.

          3.50 3.75 3.95    
Reduction of consolidated debt in the debt ratio calculation                       50,000,000
Maximum consolidated debt reduction for unrestricted cash and cash equivalents for debt covenant calculation                     200,000,000  
Additional interest expense   251,000 234,000                  
Increase in annual interest expense due to ongoing amortization of the terminated value of the swap agreements           $ 1,000,000