CONSOLIDATED BALANCE SHEETS - USD ($)	Oct. 02, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents	$ 80,089,000	$ 51,146,000
Accounts receivable, net of allowance of $311 and $282, respectively	56,050,000	51,494,000
Inventories	61,268,000	62,943,000
Income taxes receivable	5,662,000	5,906,000
Deferred tax assets	3,820,000	5,971,000
Prepaid expenses and other current assets	5,361,000	5,081,000
Assets of discontinued operations	0	631,000
Total current assets	212,250,000	183,172,000
Property, plant and equipment, net	37,596,000	40,088,000
Deferred tax assets	1,293,000	2,912,000
Other assets	12,163,000	12,134,000
Intangible assets, net	64,240,000	67,242,000
Goodwill	98,358,000	90,746,000
Total assets	425,900,000	396,294,000
Current Liabilities
Current portion of long-term debt	7,374,000	7,345,000
Accounts payable	27,507,000	25,592,000
Income taxes payable	3,009,000	1,189,000
Deferred tax liabilities	202,000	208,000
Accrued expenses and other current liabilities	21,894,000	19,401,000
Liabilities of discontinued operations	0	324,000
Total current liabilities	59,986,000	54,059,000
Long-term debt	100,084,000	105,030,000
Deferred tax liabilities	2,509,000	35,000
Income taxes payable	5,861,000	7,097,000
Other liabilities	17,477,000	18,819,000
Total liabilities	$ 185,917,000	$ 185,040,000
Commitments and Contingencies (Note 13)
Stockholders’ Equity:
Common shares, no par value; Authorized shares: unlimited; Issued and outstanding: 34,341 and 34,219, respectively	$ 423,856,000	$ 423,856,000
Additional paid-in capital	29,471,000	28,590,000
Accumulated deficit	(195,653,000)	(225,165,000)
Accumulated other comprehensive loss	(17,691,000)	(16,456,000)
Total GSI Group Inc. stockholders’ equity	239,983,000	210,825,000
Noncontrolling interest		429,000
Total stockholders’ equity	239,983,000	211,254,000
Total liabilities and stockholders’ equity	$ 425,900,000	$ 396,294,000