Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Income Statement [Abstract]      
Net sales $ 458,550 $ 389,810 $ 306,388
Cost of sales 318,452 270,678 213,596
Gross profit 140,098 119,132 92,792
Selling, general and administrative expenses 83,995 68,190 56,377
Fair value adjustment to contingent consideration (3,000)    
Income from operations 59,103 50,942 36,415
Interest expense, net 20,125 11,705 5,960
Debt extinguishment costs 3,431   2,625
Other expense, net   388 1,750
Income before income taxes 35,547 38,849 26,080
Income tax expense 11,800 15,297 9,675
Net income $ 23,747 $ 23,552 $ 16,405
Net income per common share:      
Basic $ 0.49 $ 0.49 $ 0.35
Diluted $ 0.47 $ 0.47 $ 0.33
Weighted average shares outstanding:      
Basic 48,856 48,272 47,376
Diluted 50,579 50,368 49,777