CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 51,146	$ 60,980
Accounts receivable, net of allowance of $282 and $575, respectively	51,494	48,552
Inventories	62,943	58,290
Income taxes receivable	5,906	5,715
Deferred tax assets	5,971	5,122
Prepaid expenses and other current assets	5,236	5,134
Assets of discontinued operations	631	17,836
Total current assets	183,327	201,629
Property, plant and equipment, net	40,088	31,303
Deferred tax assets	2,912
Other assets	14,604	9,426
Intangible assets, net	67,242	65,293
Goodwill	90,746	71,156
Total assets	398,919	378,807
Current Liabilities
Current portion of long-term debt	7,500	7,500
Accounts payable	25,592	24,361
Income taxes payable	1,189	1,018
Deferred tax liabilities	208	177
Accrued expenses and other current liabilities	19,401	22,288
Liabilities of discontinued operations	324	6,143
Total current liabilities	54,214	61,487
Long-term debt	107,500	64,000
Deferred tax liabilities	35	293
Income taxes payable	7,097	5,596
Other liabilities	18,819	5,028
Total liabilities	187,665	136,404
Commitments and Contingencies (Note 15)
Stockholders’ Equity:
Common shares, no par value; Authorized shares: unlimited; Issued and outstanding: 34,219 and 33,991, respectively	423,856	423,856
Additional paid-in capital	28,590	25,383
Accumulated deficit	(225,165)	(200,913)
Accumulated other comprehensive loss	(16,456)	(6,342)
Total GSI Group Inc. stockholders’ equity	210,825	241,984
Noncontrolling interest	429	419
Total stockholders’ equity	211,254	242,403
Total liabilities and stockholders’ equity	$ 398,919	$ 378,807