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Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Jan. 02, 2016 | Jan. 03, 2015
Cash paid for: |  |  |
Interest paid (net of capitalized interest) | $ 6,644 | $ 7,066 | $ 8,301
Income taxes paid | 23,120 | 28,252 | 36,637
Changes in accrued expenses due to: |  |  |
Purchases of property and equipment | 3,599 | (327) | 3,873
Purchases of capitalized software | $ 603 | $ (2,806) | $ 2,183

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