Consolidated Statements of Equity (USD $) In Thousands, unless otherwise specified		Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2010		$ 591,532	$ 583	$ 558,225	$ 111,641	$ (81,547)	$ 2,630
Net (Loss) Income Attributable to Parent		(15,537)			(15,537)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(15,687)
Net Loss Attributable to Noncontrolling Interest		150					(150)
Changes in defined benefit pension plans		(16,733)				(16,733)
Change in fair value of derivative		0
Repurchase 6,216,610 Class A Common shares in 2011, 2,478,453 Class A Common shares in 2012 and 5,065,660 Class A Common shares in 2013		(51,383)	(62)	(51,321)
Compensation plans: 2,166,605 in 2011, 3,718,800 in 2012 and 5,565,932 in 2013	[1]	1,594	22	1,571	1
Excess tax expense of compensation plans		6,946		6,946
Other		732				732
Balance at Dec. 31, 2011		517,001	543	515,421	96,105	(97,548)	2,480
Net (Loss) Income Attributable to Parent		40,188			40,188
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		39,922
Net Loss Attributable to Noncontrolling Interest		266					(266)
Changes in defined benefit pension plans		(18,009)				(18,009)
Change in fair value of derivative		(1,009)				(1,009)
Repurchase 6,216,610 Class A Common shares in 2011, 2,478,453 Class A Common shares in 2012 and 5,065,660 Class A Common shares in 2013		(23,564)	(25)	(23,539)
Compensation plans: 2,166,605 in 2011, 3,718,800 in 2012 and 5,565,932 in 2013	[1]	18,290	37	18,253
Excess tax expense of compensation plans		7,553		7,553
Other		(274)				(274)
Balance at Dec. 31, 2012		539,910	555	517,688	136,293	(116,840)	2,214
Net (Loss) Income Attributable to Parent		(474)			(474)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(724)
Net Loss Attributable to Noncontrolling Interest		250					(250)
Changes in defined benefit pension plans		35,811				35,811
Change in fair value of derivative		291				291
Repurchase 6,216,610 Class A Common shares in 2011, 2,478,453 Class A Common shares in 2012 and 5,065,660 Class A Common shares in 2013		(74,199)	(51)	(55,222)	(18,926)
Compensation plans: 2,166,605 in 2011, 3,718,800 in 2012 and 5,565,932 in 2013	[1]	46,833	56	46,777
Excess tax expense of compensation plans		0
Other		(185)				(185)
Balance at Dec. 31, 2013		$ 547,737	$ 560	$ 509,243	$ 116,893	$ (80,923)	$ 1,964

[1] * Net of tax payments related to shares withheld for vested stock and RSUs of $6,270 in 2013, $7,658 in 2012, and $9,596 in 2011