Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2014

Other Liabilities Disclosure [Abstract]

Components Of Accrued Liabilities

	December 31,
(Dollars in thousands)	2014		2013
Variable compensation	$	56,698	$	33,573
Compensated absences	50,325		46,421
Wages and salaries	43,920		35,826
Employee benefits	37,702		40,203
Taxes other than income taxes	27,861		26,704
Interest	17,555		17,579
Other	23,882		28,772
Total accrued liabilities	$	257,943	$	229,078