Annual report pursuant to Section 13 and 15(d)

Selected Quarterly Financial Information - Summarizes Selected Quarterly Financial Information (Detail)

v2.4.0.8
Selected Quarterly Financial Information - Summarizes Selected Quarterly Financial Information (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 28, 2013
Jun. 29, 2013
Mar. 30, 2013
Dec. 31, 2012
Sep. 29, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]                      
Sales $ 105,456 $ 89,681 $ 70,833 $ 73,967 $ 67,420 $ 68,899 $ 64,989 $ 65,138 $ 339,937 $ 266,446 $ 228,163
Gross Profit (sales less cost of products sold) 25,173 23,785 18,681 20,219 17,551 16,717 17,054 18,120 87,858 69,442 60,496
Income Before Tax 8,902 10,747 7,718 10,844 7,690 7,381 7,510 9,002 38,211 31,583 29,015
Net Income $ 6,389 $ 7,155 $ 5,158 $ 8,564 $ 5,655 $ 4,930 $ 5,194 $ 6,095 $ 27,266 $ 21,874 $ 21,591
Basic Earnings Per Share $ 0.36 $ 0.41 $ 0.30 $ 0.49 $ 0.33 $ 0.29 $ 0.30 $ 0.36 $ 1.56 $ 1.28 $ 1.29
Diluted Earnings Per Share $ 0.34 $ 0.39 $ 0.28 $ 0.47 $ 0.31 $ 0.27 $ 0.29 $ 0.34 $ 1.49 $ 1.20 $ 1.21