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Business Segments and Geographic Information (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 01, 2012 | Jul. 03, 2011 | Jul. 01, 2012 | Jul. 03, 2011 | Jan. 01, 2012
Statement of Operations Data |  |  |  |  |
Revenues | $ 11,651 | $ 12,830 | $ 23,496 | $ 25,001 |
Operating income | 4,706 | 5,369 | 9,474 | 10,129 |
Net income | 2,641 | 2,837 | 5,232 | 4,160 |
Balance Sheet Data |  |  |  |  |
Current assets | 22,774 |  | 22,774 |  |
Non-current assets | 37,317 |  | 37,317 |  | 39,110
Current liabilities | 3,331 |  | 3,331 |  | 3,645
Non-current liabilities | 40,473 |  | 40,473 |  | 45,237
Shareholders' equity | $ 16,287 |  | $ 16,287 |  | $ 11,296

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