Environmental Matters (tables)

6 Months Ended

Jun. 30, 2014

Environmental Remediation Obligations [Abstract]

Schedule of Environmental Loss Contingencies by Site [Table Text Block]

	Current Liabilities						Non-Current Liabilities
	June 30,				December 31,		June 30,				December 31,
In thousands	2014		2013		2013		2014		2013		2013
Portland Harbor site:
Gasco/Siltronic Sediments	$	799	$	427	$	1,278	$	38,535	$	38,058	$	37,954
Other Portland Harbor	1,317		1,729		1,766		3,080		2,598		3,478
Gasco Uplands site	7,152		11,354		11,010		39,553		8,230		39,508
Siltronic Uplands site	884		496		763		401		392		406
Central Service Center site	70		100		85		190		338		248
Front Street site	1,115		475		1,274		107		178		122
Oregon Steel Mills	—		—		—		179		179		179
Total	$	11,337	$	14,581	$	16,176	$	82,045	$	49,973	$	81,895

Environmental Regulatory Table [Table Text Block]

	June 30,				December 31,
In thousands	2014		2013		2013
Cash paid(1)	$	108,783	$	83,936	$	98,817
Total regulatory asset deferral(2)	52,117		120,224		148,389