Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Revenue	$ 105,109	$ 134,201	$ 242,438	$ 262,640
Cost of revenue	40,179	40,273	89,499	84,802
Gross profit	64,930	93,928	152,939	177,838
Operating expenses:
Research and development	22,725	13,462	35,671	25,129
Sales, general and administrative	59,854	67,665	134,307	128,756
Total operating expenses	82,579	81,127	169,978	153,885
(Loss) income from operations	(17,649)	12,801	(17,039)	23,953
Interest income, net	108	784	407	1,517
Other income (expense), net	511	(71)	(1,144)	(47)
(Loss) income before income taxes	(17,030)	13,514	(17,776)	25,423
Benefit from income taxes	(4,129)	(2,735)	(5,763)	(1,280)
Consolidated net (loss) income	(12,901)	16,249	(12,013)	26,703
Net loss attributable to non-controlling interest	(941)	(339)	(1,478)	(583)
Net (loss) income attributable to Penumbra, Inc.	$ (11,960)	$ 16,588	$ (10,535)	$ 27,286
Net (loss) income attributable to Penumbra, Inc. per share:
Basic (in dollars per share)	$ (0.34)	$ 0.48	$ (0.30)	$ 0.79
Diluted (in dollars per share)	$ (0.34)	$ 0.46	$ (0.30)	$ 0.75
Weighted average shares outstanding:
Basic (in shares)	35,400,542	34,694,228	35,221,727	34,601,270
Diluted (in shares)	35,400,542	36,214,321	35,221,727	36,214,362