Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2012

Long-Term Debt

Schedule of interest incurred and paid on the credit facility, interest capitalized related to facilities and equipment under construction, and the related weighted average interest rates on long term debt

Years Ended December 31,	2012			2011			2010
(in thousands except interest rate data)
Interest incurred	$	2,936		$	4,146		$	3,170
Capitalized interest	$	1,026		$	627		$	554
Interest paid (net of capitalized interest)	$	1,498		$	3,168		$	1,899
Weighted average interest rate		2.3	%		2.8	%		3.0	%