Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2015

Fair Value Measurements [Abstract]

Schedule of Fair Value, Assets and Liabilities 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 September 30, 2015 and December 31, 2014 was as follows (in thousands):

	As of September 30, 2015
	Level 1		Level 2			Level 3		Total
Assets
Interest rate derivatives	$	—	$	—		$	—	$	—
Commodity derivatives	—		6			—		6
Total assets	—		6			—		6
Liabilities
Commodity derivatives	—		(9		)	—		(9		)
Net liabilities	$	—	$	(3	)	$	—	$	(3	)

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