Condensed Consolidated Statements of Equity (USD $)		Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2012		$ 539,910,000	$ 555,000	$ 517,688,000	$ 136,293,000	$ (116,840,000)	$ 2,214,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		514,000			514,000
Net loss attributable to noncontrolling interests		0
Net loss, continuing operations		514,000
Changes in defined benefit pension plans		1,956,000				1,956,000
Changes in fair value of derivative		671,000				671,000
Compensation plans: 4,248,638 net shares issued in 2013 and 1,352,813 in 2014	[1]	31,802,000	43,000	31,759,000
Repurchase 2,684,876 Class A Common shares in 2013 and 1,181,560 Class A Common shares in 2014		(34,910,000)	(27,000)	(29,251,000)	(5,632,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Jun. 30, 2013		539,943,000	571,000	520,196,000	131,175,000	(114,213,000)	2,214,000
Balance at Dec. 31, 2013		547,737,000	560,000	509,243,000	116,893,000	(80,923,000)	1,964,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(3,847,000)			(3,847,000)
Net loss attributable to noncontrolling interests		(199,000)					(199,000)
Net loss, continuing operations		(4,046,000)
Changes in defined benefit pension plans		888,000				888,000
Changes in fair value of derivative		118,000				118,000
Compensation plans: 4,248,638 net shares issued in 2013 and 1,352,813 in 2014	[1]	9,943,000	14,000	9,929,000
Repurchase 2,684,876 Class A Common shares in 2013 and 1,181,560 Class A Common shares in 2014		(21,237,000)	(12,000)	(12,496,000)	(8,729,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Jun. 30, 2014		$ 533,403,000	$ 562,000	$ 506,676,000	$ 104,317,000	$ (79,917,000)	$ 1,765,000

[1] * Net of tax payments related to shares withheld for vested stock and RSUs of $3,837 in 2014 and $5,970 in 2013.