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Cash Flow Information (Tables) | 9 Months Ended
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Jan. 27, 2013
Schedule of Payments for Interest and Income Taxes | Payments for interest and income taxes follows:
|  | Nine months ended |
(dollars in thousands) |  | January 27, 2013 |  |  | January 29, 2012 |
Interest |  | $ | 395 |  |  | $ | 449 |
Net income tax payments |  |  | 2,305 |  |  |  | 1,886 |

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration