CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
NET INCOME (LOSS)	$ 17,208	$ 4,878	$ 12,015	$ (8,517)
Pension and other postretirement benefit plans:
Net gain from curtailment, net of tax of: (2013 - Three-month period $11,384, Six-month period $11,384)		17,878		17,878
Net actuarial gain (loss), net of tax of: (2014 - Three-month period $116, Six-month period $3,488; 2013 - Three-month period $6,617, Six-month period $6,617)	(181)	10,396	(5,477)	10,396
Pension settlement expense, net of tax of: (2014 - Three- month period $353, Six-month period $1,789)	556		2,811
Amortization of unrecognized net periodic benefit costs, net of tax of: (2014 - Three-month period $261, Six-month period $467; 2013 - Three- month period $1,115, Six-month period $2,229)
Net actuarial loss	436	1,779	789	3,558
Prior service credit	(29)	(29)	(58)	(58)
Foreign currency translation:
Change in foreign currency translation, net of tax of: (2014 - Three-month period $65, Six-month period $41; 2013 - Three-month period $76, Six-month period $87)	101	(116)	64	(135)
OTHER COMPREHENSIVE INCOME (LOSS), net of tax	883	29,908	(1,871)	31,639
TOTAL COMPREHENSIVE INCOME	$ 18,091	$ 34,786	$ 10,144	$ 23,122