Segment Reporting - Geographic Schedul of Revenue and Long-lived Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 233,229	$ 253,713	$ 273,410	$ 292,714	$ 274,021	$ 304,039	$ 329,392	$ 362,916	$ 1,053,066	$ 1,270,368	$ 1,132,366
Long-Lived Assets	76,694				79,640				76,694	79,640	82,141
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									817,714	988,161	895,165
Long-Lived Assets	63,667				68,253				63,667	68,253	72,138
All other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									235,352	282,207	237,201
Long-Lived Assets	$ 13,027				$ 11,387				$ 13,027	$ 11,387	$ 10,003