Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

The fair value hierarchy for our financial assets accounted for at fair value on a recurring basis at December 31, 2015 and 2014 was as follows: (in thousands):



	As of December 31, 2015
	Level 1		Level 2			Level 3		Total
Assets
Interest rate derivatives	$	—	$	—		$	—	$	—
OTC commodity swaps	$	—	$	171		$	—	$	171
Total assets	—		171			—		171
Liabilities
OTC commodity swaps	—		(45		)	—		(45		)
Net Assets	$	—	$	126		$	—	$	126



	As of December 31, 2014
	Level 1		Level 2			Level 3		Total
Assets
Interest rate derivatives	$	—	$	24		$	—	$	24
OTC commodity swaps	—		456			—		456
Total assets	—		480			—		480
Liabilities
OTC commodity swaps	—		(61		)	—		(61		)
Net assets	$	—	$	419		$	—	$	419