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Net (Loss) Income Attributable to Penumbra, Inc. Per Share (Tables)
3 Months Ended
Mar. 31, 2021
Earnings Per Share [Abstract]  
Reconciliation of the Numerator and Denominator used in the Calculation of the Basic and Diluted Earnings per Share
A reconciliation of the numerator and denominator used in the calculation of the basic and diluted net income attributable to Penumbra, Inc. per share is as follows (in thousands, except share and per share amounts):
 Three Months Ended March 31,
 20212020
Numerator:
Net income attributable to Penumbra, Inc.$11,836 $1,425 
Denominator:
Weighted average shares used to compute net income attributable to common stockholders:
Basic36,455,712 35,042,912 
Potential dilutive stock-based options and awards1,077,808 1,319,814 
Diluted37,533,520 36,362,726 
Net income attributable to Penumbra, Inc. per share:
Basic$0.32 $0.04 
Diluted$0.32 $0.04