Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 28, 2013		Jun. 29, 2012		Jun. 28, 2013		Jun. 29, 2012
Consolidated net income (loss)	$ (853)		$ 4,881		$ 1,265		$ 6,280
Other comprehensive income (loss):
Foreign currency translation adjustments	(86)	[1]	(1,351)	[1]	(5,780)	[1]	(146)	[1]
Pension liability adjustments, net of tax	223	[2]	376	[2]	1,172	[2]	492	[2]
Total other comprehensive income (loss)	137		(975)		(4,608)		346
Total consolidated comprehensive income (loss)	(716)		3,906		(3,343)		6,626
Less: Comprehensive (income) attributable to noncontrolling interest	(18)		(8)		(54)		(26)
Comprehensive income (loss) to GSI Group Inc.	$ (734)		$ 3,898		$ (3,397)		$ 6,600

[1] The tax effect on the component of comprehensive income was zero and $1.3 million for the three and six months ended June 28, 2013, respectively. The impact for the three and six months ended June 29, 2012 was not material.

[2] The tax effect on the component of comprehensive income was not material for all periods presented. See Note 4 for the total amount of pension liability adjustments reclassified out of accumulated other comprehensive loss.