Quarterly Financial Data Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 27, 2015	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information [Abstract]
Net sales	$ 194,621	$ 175,656	$ 183,940	$ 173,729	$ 186,672	$ 176,419	$ 198,966	$ 183,390	$ 727,946	$ 745,447	$ 789,564
Gross profit	23,591	16,484	19,920	11,222	11,536	7,318	15,732	15,636	71,217	50,222	64,061
Income from operations	13,527	8,059	11,039	3,669	4,404	(2,637)	8,444	7,702	36,294	17,913	34,593
Income before income taxes	13,362	7,615	10,734	3,572	1,721	(2,740)	8,662	8,059	35,283	15,702	36,841
Income tax provision	(5,232)	(2,669)	(4,200)	(762)	(360)	321	(3,623)	(3,237)	(11,339)	(6,899)	(14,017)
Net Income	$ 8,130	$ 4,946	$ 6,534	$ 4,334	$ 1,361	$ (2,419)	$ 5,039	$ 4,822	$ 23,944	$ 8,803	$ 22,824
Basic	$ 0.31	$ 0.19	$ 0.24	$ 0.16	$ 0.05	$ (0.09)	$ 0.19	$ 0.18	$ 0.90	$ 0.33	$ 0.83
Diluted	0.31	0.19	0.24	0.16	0.05	(0.09)	0.18	0.18	0.90	0.33	$ 0.83
Dividends declared per share	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.72	$ 0.72