XML 50 R38.htm IDEA: XBRL DOCUMENT v3.7.0.1
Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Net Income Per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Apr. 01, 2017
Apr. 02, 2016
Accounting Policies [Abstract]    
Options to purchase of shares of common stock 100 1,500
Net income attributable to stockholders of Masimo Corporation:    
Net income $ 45,334 $ 27,577
Net income attributable to Masimo Corporation stockholders 45,334 27,577
Net income    
Net income attributable to Masimo Corporation stockholders $ 45,334 $ 27,577
Weighted average shares outstanding - basic (in shares) 50,652 49,424
Basic net income per share attributable to Masimo Corporation stockholders (in usd per share) $ 0.90 $ 0.56
Diluted net income per share:    
Weighted average shares outstanding - basic (in shares) 50,652 49,424
Diluted share equivalent: stock options (in shares) 4,877 2,525
Weighted average shares outstanding - diluted (in shares) 55,529 51,949
Diluted net income per share attributable to Masimo Corporation stockholders (in usd per share) $ 0.82 $ 0.53