Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
NET SALES	$ 168,171	$ 137,927	$ 310,023	$ 261,119
COST OF SALES	78,249	63,017	144,460	117,525
GROSS PROFIT	89,922	74,910	165,563	143,594
OPERATING EXPENSES:
Sales and marketing	6,845	5,854	12,713	10,986
Research and development	10,483	7,229	19,281	14,369
General and administrative	12,829	8,736	24,639	18,685
Gain on foreign exchange	(110)	(3,354)	(591)	(2,068)
Total operating expenses	30,047	18,465	56,042	41,972
OPERATING INCOME	59,875	56,445	109,521	101,622
OTHER (EXPENSE) INCOME, Net:
Interest (expense) income, net	(35)	615	(88)	486
Other expense, net	(239)	(92)	(169)	(1,186)
Total other (expense) income	(274)	523	(257)	(700)
INCOME BEFORE PROVISION FOR INCOME TAXES	59,601	56,968	109,264	100,922
PROVISION FOR INCOME TAXES	(17,881)	(17,119)	(32,417)	(30,525)
NET INCOME	41,720	39,849	76,847	70,397
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	0	2,107	0	2,740
NET INCOME ATTRIBUTABLE TO IPG PHOTONICS CORPORATION	$ 41,720	$ 37,742	$ 76,847	$ 67,657
NET INCOME ATTRIBUTABLE TO IPG PHOTONICS CORPORATION PER SHARE:
Basic (in dollars per share)	$ 0.81	$ 0.74	$ 1.49	$ 1.37
Diluted (in dollars per share)	$ 0.80	$ 0.72	$ 1.47	$ 1.34
WEIGHTED AVERAGE SHARES OUTSTANDING:
Basic (shares)	51,462	50,989	51,435	49,717
Diluted (shares)	52,385	52,071	52,357	50,826