Note 15 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Effective Income Tax Rate Reconciliation, Percent	46.80%	15.90%
Goodwill	$ 12,325	$ 11,630	$ 10,223
Income Tax Examination, Penalties and Interest Expense	0	0
Information Technology [Member]
Goodwill	$ 5,516	5,516	$ 5,516
Information Technology [Member] \| Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Goodwill		$ 0
Foreign Tax Authority [Member] \| Canada Revenue Agency [Member] \| Maximum [Member]
Effective Income Tax Rate Reconciliation, Percent	30.00%
Domestic Tax Authority [Member] \| Internal Revenue Service (IRS) [Member] \| Tax Year 2011 [Member]
Income Tax Examination, Year under Examination	2011
Domestic Tax Authority [Member] \| Internal Revenue Service (IRS) [Member] \| Tax Year 2012 [Member]
Income Tax Examination, Year under Examination	2012
State and Local Jurisdiction [Member] \| New Jersey Division of Taxation [Member] \| Earliest Tax Year [Member]
Income Tax Examination, Year under Examination	2009
State and Local Jurisdiction [Member] \| New Jersey Division of Taxation [Member] \| Latest Tax Year [Member]
Income Tax Examination, Year under Examination	2012

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(2))
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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Tax year being audited in the income tax examination, in CCYY format.

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