DEBT AND LINES OF CREDIT - Long-Term Debt (Details) - USD ($) $ in Thousands	Jan. 02, 2016	Jan. 03, 2015
Long-Term Debt
Total long-term debt	$ 74,247	$ 71,584
Current portion of long-term debt		584
Total long-term debt, less current portion	$ 74,247	71,000
U.S. revolving line of credit expiring July 2018 \| Revolving line of credit \| Secured debt
Long-Term Debt
Interest Rate, effective interest rate (as a percent)	1.94%
Total long-term debt	$ 74,000	71,000
Israeli loans \| Loans
Long-Term Debt
Total long-term debt		$ 584
Austrian loans due through March 2019 \| Unsecured debt
Long-Term Debt
Total long-term debt	$ 247
Austrian loans due through March 2019 \| Unsecured debt \| Minimum
Long-Term Debt
Interest Rate, stated rate (as a percent)	0.75%
Austrian loans due through March 2019 \| Unsecured debt \| Maximum
Long-Term Debt
Interest Rate, stated rate (as a percent)	2.00%

Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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The effective interest rate at the end of the reporting period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Topic 210
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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-Number 210
-Section 02
-Paragraph 20, 22
-Article 5

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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