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Significant Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 29, 2012 | Dec. 31, 2011
Property and equipment |  |
Depreciation and amortization | $ 1,141 | $ 1,223
Property plant and equipment, gross | 24,790 | 23,950
Less accumulated depreciation and amortization | (12,542) | (11,415)
Property plant and equipment, net | 12,248 | 12,535
Depreciation and amortization included in cost of revenues | 591 | 507
Estimated amortization expense |  |
2013 | 80 |
2014 | 80 |
2015 | 80 |
Land |  |
Property and equipment |  |
Property plant and equipment, gross | 1,140 | 1,140
Buildings and improvements |  |
Property and equipment |  |
Property plant and equipment, gross | 3,429 | 3,303
Buildings and improvements | Minimum [Member] |  |
Property and equipment |  |
Estimated useful life | 18 years |
Buildings and improvements | Maximum [Member] |  |
Property and equipment |  |
Estimated useful life | 30 years |
Equipment (including computer software) |  |
Property and equipment |  |
Property plant and equipment, gross | 20,158 | 19,472
Equipment (including computer software) | Minimum [Member] |  |
Property and equipment |  |
Estimated useful life | 3 years |
Equipment (including computer software) | Maximum [Member] |  |
Property and equipment |  |
Estimated useful life | 15 years |
Projects under construction |  |
Property and equipment |  |
Property plant and equipment, gross | 63 | 35
Software development costs |  |
Property and equipment |  |
Costs capitalized | 135 | 191
Amortization | 150 | 217
Estimated amortization expense |  |
2013 | 124 |
2014 | 79 |
2015 | $ 17 |
Property and Equipment [Member] | Minimum [Member] |  |
Property and equipment |  |
Estimated useful life | 3 years |
Property and Equipment [Member] | Maximum [Member] |  |
Property and equipment |  |
Estimated useful life | 30 years |

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- Definition The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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- Definition Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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