Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Consolidated net income	$ 7,331		$ 19,578		$ 29,001
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	54	[1]	(1,510)	[1]	241	[1]
Pension liability adjustments, net of tax	3,353	[2]	(3,215)	[2]	(1,836)	[2]
Total other comprehensive income (loss)	3,407		(4,725)		(1,595)
Total consolidated comprehensive income	10,738		14,853		27,406
Less: Comprehensive income attributable to noncontrolling interest	(22)		(40)		(28)
Comprehensive income attributable to GSI Group Inc.	$ 10,716		$ 14,813		$ 27,378

[1] The tax effect on the component of comprehensive income was $477 and $1,942 in 2013 and 2012, respectively, and was nominal for the year ended 2011.

[2] The tax effect on the component of comprehensive income was $900 and $829 in 2013 and 2012, respectively, and was nominal for the year ended 2011.