Derivatives (Narrative) (Details) (Commodity Derivatives [Member], USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
Commodity Derivatives [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Accumulated OCI gain, net of tax	$ 0	[1]	$ 1,709	[1]

[1] Net of taxes.