Accumulated Other Comprehensive Income (Reclassification Out Of Accumulated Other Comprehensive Income) (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
Net sales	$ 60,405	$ 52,776	$ 38,855	$ 51,000	$ 48,801	$ 48,742	$ 31,915	$ 46,419	$ 203,036	$ 175,877	$ 145,775
Income tax benefit									(2,073)	(1,864)	(2,688)
Amount reclassified net of tax									515
Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Net sales									804
Income tax benefit									289
Amount reclassified net of tax									$ 515