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Supplemental Disclosure of Cash Flow Information (Details Textual) (USD $) | 12 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 26, 2011 | Mar. 27, 2010
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |
Other comprehensive income in connection with interest rate swap contracts |  | $ 190,000 | [1] | $ 435,000 | [1]
Supplemental Disclosure Of Cash Flow Information (Textual) [Abstract] |  |  |  |  |
Capital leases - property, plant and equipment | 1,400,000 | 1,065,000 |  | 3,500,000 |
Capital leases - long-term debt | 1,400,000 | 1,065,000 |  | 3,500,000 |
Other non current assets pension liability adjustment | (3,033,000) |  |  | 1,311,000 |
Other comprehensive income pension liability adjustment | (1,977,000) |  |  | (813,000) |
Long term deferred taxes pension liability adjustment | (1,212,000) |  |  | (498,000) |
Other long term liabilities pension liability adjustment | 156,000 |  |  |  |
Paid in capital in connection with accounting for income tax benefits related to the exercise of stock options | (5,314,000) | (3,538,000) |  | (2,990,000) |
Tax benefit from exercise of stock options | 5,314,000 | 3,531,000 |  | 2,990,000 |
Long-term deferred taxes in connection with accounting for income tax benefits related to the exercise of stock options |  | 7,000 |  |  |
Current liabilities, exercise of stock options | 5,485,000 | 1,120,000 |  | 792,000 |
Common stock issued exercise of stock options | 6,000 | 1,000 |  | 1,000 |
Paid in capital exercise of stock options | 8,685,000 | 606,000 |  | 2,343,000 |
Treasury stock exercise of stock options | 14,176,000 | 1,727,000 |  | 3,136,000 |
Other current liabilities in connection with declaration of cash dividend |  |  |  | 1,434,000 |
Retained earnings in connection with declaration of cash dividend |  |  |  | 1,434,000 |
Interest rate swap [Member] |  |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |  |
Other comprehensive income in connection with interest rate swap contracts |  |  |  | 435,000 |
Other current liabilities in connection with interest rate swap contracts |  |  |  | 307,000 |
Other long-term liabilities in connection with interest rate swap contracts |  |  |  | (1,008,000) |
Long-term deferred taxes in connection with interest rate swap contracts |  |  |  | $ (266,000) |
[1] | The balance related to the derivatives contracts was $(190) at March 27, 2010.

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