Equity and Noncontrolling Interest - Reclassifications (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Loss, Balance at Beginning of Period	$ (54,406,000)	$ (34,700,000)
Other Comprehensive Income (Loss) Before Reclassifications	(8,345,000)	1,758,000
Reclassifications From Accumulated Comprehensive Income Loss To Income Statement	717,000	211,000
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(7,628,000)	1,969,000
Related Tax Amounts	(937,000)	(284,000)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(8,565,000)	1,685,000
Accumulated Other Comprehensive Loss, Balance at End of Period	(62,971,000)	(33,015,000)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Loss, Balance at Beginning of Period	(14,312,000)	1,152,000
Other Comprehensive Income (Loss) Before Reclassifications	(11,113,000)	1,070,000
Reclassifications From Accumulated Comprehensive Income Loss To Income Statement	0	0
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(11,113,000)	1,070,000
Related Tax Amounts	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(11,113,000)	1,070,000
Accumulated Other Comprehensive Loss, Balance at End of Period	(25,425,000)	2,222,000
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Loss, Balance at Beginning of Period	(41,551,000)	(37,433,000)
Other Comprehensive Income (Loss) Before Reclassifications	2,498,000	25,000
Reclassifications From Accumulated Comprehensive Income Loss To Income Statement	881,000	769,000
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	3,379,000	794,000
Related Tax Amounts	(901,000)	(248,000)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	2,478,000	546,000
Accumulated Other Comprehensive Loss, Balance at End of Period	(39,073,000)	(36,887,000)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Loss, Balance at Beginning of Period	1,457,000	1,581,000
Other Comprehensive Income (Loss) Before Reclassifications	270,000	663,000
Reclassifications From Accumulated Comprehensive Income Loss To Income Statement	(164,000)	(558,000)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	106,000	105,000
Related Tax Amounts	(36,000)	(36,000)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	70,000	69,000
Accumulated Other Comprehensive Loss, Balance at End of Period	$ 1,527,000	$ 1,650,000