CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 27, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 45,007	$ 60,980
Accounts receivable, net of allowance of $573 and $575, respectively	57,028	48,552
Inventories	64,550	58,290
Income taxes receivable	5,666	5,715
Deferred tax assets	8,716	6,351
Prepaid expenses and other current assets	5,053	5,134
Assets of discontinued operations	13,022	16,088
Total current assets	199,042	201,110
Property, plant and equipment, net	40,159	31,303
Deferred tax assets	503	519
Other assets	12,477	9,426
Intangible assets, net	98,024	65,293
Goodwill	115,584	71,156
Total assets	465,789	378,807
Current Liabilities
Current portion of long-term debt	7,500	7,500
Accounts payable	28,440	24,361
Income taxes payable	2,053	1,018
Deferred tax liabilities	218	214
Accrued expenses and other current liabilities	20,765	22,288
Liabilities of discontinued operations	7,542	6,398
Total current liabilities	66,518	61,779
Long-term debt	127,250	64,000
Deferred tax liabilities	4,773
Income taxes payable	7,322	5,596
Other liabilities	13,425	5,029
Total liabilities	219,288	136,404
Commitments and Contingencies (Note 13)
Stockholders' Equity:
Common shares, no par value; Authorized shares: unlimited; Issued and outstanding: 34,192 and 33,991, respectively	423,856	423,856
Additional paid-in capital	26,806	25,383
Accumulated deficit	(199,205)	(200,913)
Accumulated other comprehensive loss	(5,385)	(6,342)
Total GSI Group Inc. stockholders' equity	246,072	241,984
Noncontrolling interest	429	419
Total stockholders' equity	246,501	242,403
Total liabilities and stockholders' equity	$ 465,789	$ 378,807