Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2011

Long-term Debt, Unclassified [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term debt consisted of the following as of December 31, 2011 and 2010 (dollars in thousands):

	2011		2010
Senior credit facilities with variable interest rates (weighted average of 3.15% and 3.53% before impact of interest rate swaps at December 31, 2011 and 2010, respectively) due 2016	$	493,345	$	370,589
Series A senior notes with fixed interest rate of 4.85% matured November 2011	—		75,000
Series B senior notes with fixed interest rate of 5.36% due 2015	100,000		100,000
Series C senior notes with variable interest rate (1.12% and 0.99% at December 31, 2011 and 2010, respectively) due July 2012	25,000		25,000
Other debt and capital leases with interest rates up to 2.50% and maturing at various dates up to 2054	7,849		8,275
Long-term debt	626,194		578,864
Less: current portion	57,168		103,690
Long-term debt, less current portion	$	569,026	$	475,174

Schedule of Maturities of Long-term Debt [Table Text Block]

The following is a summary of the maturities of long-term debt, including capital leases, as of December 31, 2011 (dollars in thousands):

2012	$	57,168
2013	32,113
2014	32,121
2015	136,598
2016	366,650
Thereafter (1)	51,486
Total long-term debt	$	676,136