CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 01, 2011	Jul. 02, 2010
Sales	$ 101,370	$ 85,737	$ 193,228	$ 200,352
Cost of goods sold	56,377	47,681	108,341	113,258
Gross profit	44,993	38,056	84,887	87,094
Operating expenses:
Research and development and engineering	7,946	7,399	16,117	14,764
Selling, general and administrative	21,254	17,573	40,522	35,145
Amortization of purchased intangible assets	987	1,126	1,979	2,254
Restructuring, restatement related costs and other	(61)	1,011	122	1,679
Post-emergence professional fees	94		233
Total operating expenses	30,220	27,109	58,973	53,842
Income from operations	14,773	10,947	25,914	33,252
Interest income	19	25	39	50
Interest expense	(3,414)	(5,747)	(7,084)	(11,555)
Foreign exchange transaction gains (losses), net	(123)	(106)	(815)	263
Other income (expense), net	358	1,081	1,388	1,686
Income from operations before reorganization items and income taxes	11,613	6,200	19,442	23,696
Reorganization items		(10,617)		(20,247)
Income (loss) from operations before income taxes	11,613	(4,417)	19,442	3,449
Income tax provision	1,538	638	3,105	2,463
Consolidated net income (loss)	10,075	(5,055)	16,337	986
Less: Net income attributable to noncontrolling interest	(9)	(11)	(64)	(52)
Net income (loss) attributable to GSI Group Inc.	$ 10,066	$ (5,066)	$ 16,273	$ 934
Net income (loss) attributable to GSI Group Inc. per common share:
Basic	$ 0.30	$ (0.32)	$ 0.49	$ 0.06
Diluted	$ 0.30	$ (0.32)	$ 0.48	$ 0.06
Weighted average common shares outstanding-basic	33,478	15,967	33,464	15,960
Weighted average common shares outstanding-diluted	33,595	15,967	33,564	15,981