Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net (Loss) Income	$ (18,687)	$ 145,765	$ (134,683)	$ (4,705)
Income (Loss) from Discontinued Operations, net of taxes	0	(8,074)	15,039	(21,018)
Net (Loss) Income from Continuing Operations	(18,687)	153,839	(149,722)	16,313
Other Comprehensive (Loss) Income from Continuing Operations, net of taxes			10,535
Comprehensive (Loss) Income	(18,062)	148,449	(124,148)	2,427
Discontinued Operations
Comprehensive (Loss) Income	0	(5,862)	26,810	(17,784)
Continuing Operations
Change in unrecognized benefit plan gains and losses arising during the period, net of taxes of $(285) and $2,367 for the nine months ended September 30, 2017 and September 30, 2016, respectively	0	0	(442)	3,671
Adjustment for previously unrecognized benefit plan gains and losses included in net income, net of taxes of $(26) and $(28) for the three months ended September 30, 2017 and September 30, 2016, respectively, and $(77) and $(85) for the nine months ended September 30, 2017 and September 30, 2016, respectively	(40)	(44)	(120)	(132)
Change in unrecognized benefit plan gains and losses, net of taxes	(40)	(44)	(562)	3,539
Change in unrealized holding gains and losses arising during the period, net of taxes of $341 for the three months ended September 30, 2016 and $(60) and $1,026 for the nine months ended September 30, 2017 and September 30, 2016, respectively	0	593	(95)	1,591
Adjustment for loss (gain) on investment sales included in net income, net of taxes of $40 and $(1,921) for the three and nine months ended September 30, 2017	62	0	(2,980)	0
Change in marketable securities, net of taxes	62	593	(3,075)	1,591
Unrealized gains and losses, net of taxes of $(497) and $(3,950) for the three and nine months ended September 30, 2017	(769)	0	(6,126)	0
Gains and losses reclassified to net income, net of taxes of $509 and $1,638 for the three and nine months ended September 30, 2017	789	0	2,540	0
Change in unrecognized gains and losses on cash flow hedging instruments, net of taxes	20	0	(3,586)	0
Change in foreign currency translation adjustments, net of taxes of $42 and $(103) for the three months ended September 30, 2017 and September 30, 2016, respectively, and $2,752 and $(1,198) for the nine months ended September 30, 2017 and September 30, 2016, respectively	583	(77)	5,987	(1,232)
Other Comprehensive (Loss) Income from Continuing Operations, net of taxes	625	472	(1,236)	3,898
Comprehensive (Loss) Income	$ (18,062)	$ 154,311	$ (150,958)	$ 20,211