Selected Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2019

Selected Quarterly Financial Information [Abstract]

Schedule of Quarterly Financial Data

2019	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	315,047	$	363,769	$	329,138	$	306,627
Gross profit	148,911		180,237		152,858		124,203
Net income (loss) attributable to IPG Photonics Corporation	55,159		72,272		57,253		(4,450)
Net income (loss) per share, basic	1.04		1.36		1.08		(0.08)
Net income (loss) per share, diluted	1.02		1.34		1.07		(0.08)

2018	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	359,864	$	413,613	$	356,346	$	330,051
Gross profit	203,362		234,975		195,184		166,747
Net income attributable to IPG Photonics Corporation	106,334		121,617		100,517		75,559
Net income per share, basic	1.98		2.27		1.88		1.42
Net income per share, diluted	1.93		2.21		1.84		1.40