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Unaudited Quarterly Financial Data - Schedule of Quarterly Financial Data (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Quarterly Financial Data [Abstract]                      
Net sales $ 96,670 $ 112,008 $ 94,629 $ 86,139 $ 103,910 $ 93,972 $ 83,378 $ 66,735 $ 389,446 $ 347,995 $ 237,842
Cost of sales 82,975 96,700 77,255 69,682 82,819 75,344 67,982 54,805 326,612 280,950 193,316
Gross profit 13,695 15,308 17,374 16,457 21,091 18,628 15,396 11,930 62,834 67,045 44,526
Operating expenses 14,433 13,920 12,899 12,387 11,980 11,109 9,503 8,409 53,639 41,001 29,559
Operating income (loss) (738) 1,388 4,475 4,070 9,111 7,519 5,893 3,521 9,195 26,044 14,967
Other (income) expense 149 (7,255) (1,731) 4,142 (4,519) (3,625) (240) (111) 229 183 10
Income (loss) before income taxes (887) 8,643 6,206 (72) 13,630 11,144 6,133 3,632 13,890 34,539 (14,001)
Income tax provision (benefit) (2,591) (466) 1,285 1,384 3,309 3,996 2,250 1,258 (388) 10,813 4,759
Net income (loss) $ 1,704 $ 9,109 $ 4,921 $ (1,456) $ 10,321 $ 7,148 $ 3,883 $ 2,374 $ 14,278 $ 23,726 $ (18,760)
Net income (loss) per common share:                      
Basic $ 0.16 $ 0.84 $ 0.46 $ (0.13) $ 0.96 $ 0.66 $ 0.37 $ 0.23      
Diluted $ 0.04 $ 0.03 $ 0.18 $ (0.13) $ 0.48 $ 0.56 $ 0.34 $ 0.19