Common stock for sale offer to eligible employees, if Plan is approved.

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Grant Date Fair Value Of Equity Awards Issued During Period

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Share based compensation arrangement by share based payment award non vested stock options grants in period.

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Share based compensation arrangement by share based payment award options vested in period total fair value.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

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The discount rate from market value on purchase date that participants pay for shares.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The weighted average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period.

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Number of share options (or share units) exercised during the current period.

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Number of shares that have been repurchased and retired during the period.

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Equity Incentive Plans (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended			3 Months Ended		12 Months Ended	3 Months Ended		12 Months Ended		3 Months Ended
	Apr. 01, 2012	Jan. 01, 2012	Apr. 01, 2012 Senior Employee and Director [Member]	Apr. 01, 2012 Share based compensation awards other than option [Member]	Apr. 01, 2012 Restricted Stock [Member] Y	Apr. 01, 2011 Restricted Stock [Member]	Jan. 01, 2012 Restricted Stock [Member]	Apr. 01, 2012 Stock Options [Member] Y	Apr. 03, 2011 Stock Options [Member]	Jan. 01, 2012 Stock Options [Member]	Apr. 01, 2012 Performance Based Share [Member]	Apr. 01, 2012 Employee Stock Purchase Plan [Member]	Apr. 01, 2012 Minimum [Member] Restricted Stock [Member]	Apr. 01, 2012 Maximum [Member] Restricted Stock [Member]
Equity Incentive Plans (Additional Textual) [Abstract]
Common stock available for the issuance of awards	1,473,154			671,054
Stock options granted		554,350
Retirement of common stock, shares	57,457
Share-based compensation arrangement by share based payment award options granted aggregate fair value		$ 5.4
Options granted, Wtd. Avg. Exercise Price	$ 0.00							$ 24.71
Shares of common stock issued for employees exercising options	(44,000)									297,406
Share based compensation expense					1.0	0.7		0.5	1.3
Unrecognized compensation costs related to non vested stock option awards					11.0			3.5
Expected weighted average period to recognize expense					2.8			2.6
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period													3 years	4 years
Grant Date Fair Value of Equity Awards Issued During Period					$ 4.9		$ 9.3
Number of shares authorized amended			280,000		381,010						205,000
Shares issued due to vesting	108,000	94,530
Discount on purchase of Common Stock for employee from the current market price												5.00%
Common stock for sale offer to eligble employees, if Plan is approved												500,000