Rationalization Charges Activity in Rationalization Plan Reserves (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Restructuring Reserve [Roll Forward]
Balance at December 31, 2012	$ 4,929
Total activity	(1,202)
Balance at June 30, 2013	3,727
Prior Years' Rationalization plans
Restructuring Reserve [Roll Forward]
Rationalization Plan Reserves Established	869
Rationalization Plan Reserves Utilized	(2,453)
2013 Rationalization Plans
Restructuring Reserve [Roll Forward]
Rationalization Plan Reserves Established	1,415
Rationalization Plan Reserves Utilized	(1,033)
Employee Severance and Benefits
Restructuring Reserve [Roll Forward]
Balance at December 31, 2012	3,231
Total activity	(1,250)
Balance at June 30, 2013	1,981
Employee Severance and Benefits | Prior Years' Rationalization plans
Restructuring Reserve [Roll Forward]
Rationalization Plan Reserves Established	(138)
Rationalization Plan Reserves Utilized	(1,494)
Employee Severance and Benefits | 2013 Rationalization Plans
Restructuring Reserve [Roll Forward]
Rationalization Plan Reserves Established	1,057
Rationalization Plan Reserves Utilized	(675)
Plant Exit Costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2012	1,698
Total activity	48
Balance at June 30, 2013	1,746
Plant Exit Costs | Prior Years' Rationalization plans
Restructuring Reserve [Roll Forward]
Rationalization Plan Reserves Established	829
Rationalization Plan Reserves Utilized	(781)
Plant Exit Costs | 2013 Rationalization Plans
Restructuring Reserve [Roll Forward]
Rationalization Plan Reserves Established	257
Rationalization Plan Reserves Utilized	(257)
Non-Cash Asset Write-Down
Restructuring Reserve [Roll Forward]
Balance at December 31, 2012	0
Total activity	0
Balance at June 30, 2013	0
Non-Cash Asset Write-Down | Prior Years' Rationalization plans
Restructuring Reserve [Roll Forward]
Rationalization Plan Reserves Established	178
Rationalization Plan Reserves Utilized	(178)
Non-Cash Asset Write-Down | 2013 Rationalization Plans
Restructuring Reserve [Roll Forward]
Rationalization Plan Reserves Established	101
Rationalization Plan Reserves Utilized	$ (101)