Property, Plant And Equipment (Summary Of Fair Value And Impairment Of Long Lived Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Jun. 30, 2015
Property, Plant and Equipment [Line Items]
Assets held for sale	$ 37,400	$ 45,349
Total losses on assets held for sale	$ (21,566)
Level 1 [Member]
Property, Plant and Equipment [Line Items]
Assets held for sale
Level 2 [Member]
Property, Plant and Equipment [Line Items]
Assets held for sale
Level 3 [Member]
Property, Plant and Equipment [Line Items]
Assets held for sale	$ 37,400	$ 45,349