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Condensed Consolidated Statement of Income Statement - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
Total product revenue $ 181,271 $ 160,286 $ 542,170 $ 488,183
Royalty and other revenue   7,335   23,241
Royalty and other revenue 12,421   30,757  
Total revenue 193,692 167,621 572,927 511,424
Cost of goods sold 65,027 57,499 191,692 171,954
Gross profit 128,665 110,122 381,235 339,470
Selling, general and administrative 65,390 57,845 197,339 184,244
Research and development 15,300 15,673 45,859 44,856
Total operating expenses 80,690 73,518 243,198 229,100
Operating income 47,975 36,604 138,037 110,370
Non-operating income (expense) 287 (546) 1,319 423
Income before provision for income taxes 48,262 36,058 139,356 110,793
Provision for income taxes 9,027 8,285 8,108 25,420
Net income including noncontrolling interest 39,235 27,773 131,248 85,373
Net income 39,235 27,773 131,248 85,373
Foreign currency translation adjustments 1,405 (470) 4,270 (280)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent $ 40,640 $ 27,303 $ 135,518 $ 85,093
Basic $ 0.75 $ 0.56 $ 2.55 $ 1.73
Diluted $ 0.70 $ 0.52 $ 2.35 $ 1.62
Basic 52,079 49,477 51,469 49,386
Diluted 56,163 53,565 55,967 52,837