CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Net loss	$ (67,948)		$ (32,673)
Other comprehensive income:
Defined benefit postretirement plans - amortization of actuarial losses, net of tax	342	[1]	187
Total other comprehensive income	342		187
Total comprehensive loss	$ (67,606)		$ (32,486)

[1] All amounts are net of tax.