Note 12 - Stock-based Compensation (Details) - RSU Transactions (Restricted Stock Units (RSUs) [Member], USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
Dec. 28, 2014	Mar. 30, 2014
Restricted Stock Units (RSUs) [Member]
Note 12 - Stock-based Compensation (Details) - RSU Transactions [Line Items]
Shares	1,104,932	1,177,126
Weighted Average Grant-Date Fair Value (in Dollars per share)	$ 10.31	$ 10.94
Weighted Average Remaining Contractual Term (in years)	1 year 146 days	1 year 226 days
Aggregate Intrinsic Value (in thousands) (in Dollars)	$ 11,370	$ 13,784
Granted	337,022
Granted (in Dollars per share)	$ 9.27
Issued and released	(230,553)
Issued and released (in Dollars per share)	$ 10.65
Cancelled	(178,663)
Cancelled (in Dollars per share)	$ 12.05
Vested and expected to vest, December 28, 2014	962,572
Vested and expected to vest, December 28, 2014	1 year 116 days
Vested and expected to vest, December 28, 2014 (in Dollars)	$ 9,905

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest share-based compensation awards (other than options) outstanding.

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The number of exercisable share-based compensation awards other than options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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Weighted average remaining contractual term for fully vested and expected to vest share-based compensation awards (other than options) outstanding.

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Intrinsic value of equity-based compensation awards not vested. Excludes stock and unit options.

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

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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 weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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