Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
Selected Quarterly Financial Information - Summarizes Selected Quarterly Financial Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Oct. 03, 2015
Jul. 04, 2015
Apr. 04, 2015
Dec. 31, 2014
Sep. 27, 2014
Jun. 28, 2014
Mar. 29, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]                      
Sales $ 157,340 $ 200,145 $ 173,156 $ 161,638 $ 166,083 $ 179,442 $ 174,563 $ 140,951 $ 692,279 $ 661,039 $ 339,937
Gross profit (sales less cost of products sold) 38,901 59,427 49,452 40,162 42,525 51,310 43,202 30,005 187,942 167,042 87,858
Income before income taxes 14,822 35,887 27,044 16,297 24,411 23,470 19,922 11,304 94,050 79,107 38,211
Net income $ 13,907 $ 24,694 $ 17,690 $ 10,683 $ 18,439 $ 17,080 $ 13,144 $ 7,507 $ 66,974 $ 56,170 $ 27,266
Basic earnings per share (in usd per share) $ 0.54 $ 0.97 $ 0.70 $ 0.42 $ 0.73 $ 0.68 $ 0.53 $ 0.30 $ 2.63 $ 2.25 $ 1.13
Diluted earnings per share (in usd per share) $ 0.53 $ 0.94 $ 0.67 $ 0.41 $ 0.71 $ 0.65 $ 0.50 $ 0.29 $ 2.55 $ 2.16 $ 1.08