Equity Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2016		Sep. 30, 2015		Sep. 30, 2016		Sep. 30, 2015
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax, Portion Attributable to Parent	$ 135		$ 126		$ 404		$ 375
Change In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance, Foreign Currency Translation Adjustment, Net of Tax	(12,506)		(1,812)		(12,513)		3,808
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	21		(6,193)		28		(11,813)
Ending Balance, Foreign Currency Translation Adjustment, Net of Tax	(12,485)		(8,005)		(12,485)		(8,005)
Beginning Balance, Pension and Other Postretirement Benefit Plans, Net of Tax	(11,892)		(12,029)		(12,391)		(12,494)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	250	[1]	231	[1]	749	[2]	696	[2]
Ending Balance, Pension and Other Postretirement Benefit Plans, Net of Tax	(11,642)		(11,798)		(11,642)		(11,798)
Beginning Balance Accumulated Other Comprehensive Income, Net of Tax	(24,398)		(13,841)		(24,904)		(8,686)
Other Comprehensive Income (Loss), Net of Tax	271		(5,962)		777		(11,117)
Ending Balance Accumulated Other Comprehensive Income, Net of Tax	(24,127)		(19,803)		(24,127)		(19,803)
Cost of Sales [Member]
Change In Accumulated Other Comprehensive Income [Roll Forward]
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax	152		140		454		421
Selling, General and Administrative Expenses [Member]
Change In Accumulated Other Comprehensive Income [Roll Forward]
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax	$ 233		$ 217		$ 699		$ 650

[1] Amounts reclassified from accumulated other comprehensive (loss) income were expensed and included in cost of sales ($152 and $140 for the three months ended September 30, 2016 and 2015, respectively) and selling, general and administrative expenses ($233 and $217 for the three months ended September 30, 2016 and 2015, respectively) in the condensed consolidated statements of operations and comprehensive income (loss). The components in accumulated other comprehensive (loss) income are included in the computation of net periodic pension expense (income) as reported in Note 11.

[2] Amounts reclassified from accumulated other comprehensive (loss) income were expensed and included in cost of sales ($454 and $421 for the nine months ended September 30, 2016 and 2015, respectively) and selling, general and administrative expenses ($699 and $650 for the nine months ended September 30, 2016 and 2015, respectively) in the condensed consolidated statements of operations and comprehensive income (loss). The components in accumulated other comprehensive income (loss) are included in the computation of net periodic pension expense (income) as reported in Note 11.