Consolidated Statement of Changes in Retained Earnings and Accumulated Other Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ 516,496
Net income	12,073	$ 9,450
Pension and post-retirement plan adjustments, net of tax	1,892	2,529
(Income) attributable to noncontrolling interests	2	490
Ending Balance	540,039
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	858,553	835,126
Net income	12,073	9,450
(Income) attributable to noncontrolling interests	(322)	232
Common dividends	(11,926)	(11,543)
Preferred dividends	(10)	(10)
Ending Balance	858,368	833,255
Accumulated Other Comprehensive (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(208,199)	(166,730)
Foreign currency translation adjustments	13,948	(24,050)
Pension and post-retirement plan adjustments, net of tax	1,892	2,529
(Income) attributable to noncontrolling interests	(324)	258
Foreign currency translation adjustments reclassified into earnings	2,103	0
Ending Balance	$ (190,580)	$ (187,993)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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