Notes Payable and Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2011

Notes Payable and Long-Term Debt

Summary of long-term debt

	December 31,
(Thousands of dollars)	2011			2010
Private placements:
6.21% senior notes, due 2012	$	1,072		$	2,143
6.92% senior notes, due 2012	31,000			31,000
Industrial Development Revenue Bonds, floating rates (1.27% - 2.10% at December 31, 2011) due 2014 through 2027	41,800			41,800
Foreign subsidiary obligation, 5.34%, due 2012 through 2021	81,318			16,352
Foreign subsidiary obligation, floating rate	206			221
Capital lease obligations and other	1,856			1,588
	157,252			93,104
Current maturities of long-term debt	(40,885		)	(1,697		)
Long-term debt, less current maturities	$	116,367		$	91,407