Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net income (loss)	$ 11,488	$ (31,403)	$ 16,376	$ (36,502)
Changes in fair value of derivative, net of tax of $37, $37, $74 and $73	59	59	118	119
Changes in defined benefit pension plans, net of tax of $401, $(1,669), $801 and $(1,211)	640	(2,716)	1,282	(1,959)
Other	(7)	84	(14)	84
Total comprehensive income (loss)	$ 12,180	$ (33,976)	$ 17,762	$ (38,258)