Acquisitions (Pro Forma) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Business Combinations [Abstract]
Net sales	$ 109,875	$ 100,532	$ 213,823	$ 196,150
Net sales, Pro Forma		110,227		214,242
Net income	3,752	6,095	4,423	11,843
Net Income, Pro Forma		$ 7,028		$ 13,303
Basic (in dollars per share)	$ 0.09	$ 0.14	$ 0.10	$ 0.28
Basic, Pro Forma (in dollars per share)		$ 0.17		$ 0.32
Diluted (in dollars per share)	$ 0.09	$ 0.14	$ 0.10	$ 0.28
Diluted, Pro Forma (in dollars per share)		$ 0.17		$ 0.31