Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2016

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,	2016			2015			2014
(in thousands except interest rate data)
Interest incurred	$	449		$	1,913		$	2,295
Capitalized interest	$	—		$	534		$	563
Interest paid (net of capitalized interest)	$	284		$	1,169		$	1,314
Weighted average interest rate		—	%		2.2	%		2.2	%