Environmental Matters (tables)

3 Months Ended

Mar. 31, 2014

Environmental Remediation Obligations [Abstract]

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

	Current Liabilities						Non-Current Liabilities
	March 31,				December 31,		March 31,				December 31,
In thousands	2014		2013		2013		2014		2013		2013
Portland Harbor site:
Gasco/Siltronic Sediments	$	776	$	389	$	1,278	$	38,584	$	38,050	$	37,954
Other Portland Harbor	1,408		1,678		1,766		3,283		2,793		3,478
Gasco Uplands site	8,766		15,411		11,010		39,482		8,365		39,508
Siltronic Uplands site	872		556		763		394		414		406
Central Service Center site	70		80		85		224		386		248
Front Street site	1,176		760		1,274		115		199		122
Oregon Steel Mills	—		—		—		179		179		179
Total	$	13,068	$	18,874	$	16,176	$	82,261	$	50,386	$	81,895

Environmental Regulatory Table [Table Text Block]

	March 31,				December 31,
In thousands	2014		2013		2013
Cash paid(1)	$	106,105	$	75,620	$	98,817
Total regulatory asset deferral(2)	63,517		125,671		148,389