Summarized Information Regarding Options Outstanding and Options Exercisable (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Sep. 27, 2013	Jun. 28, 2013	Sep. 28, 2012	Jun. 29, 2012	Mar. 31, 2013	Mar. 31, 2012
Number of Options Outstanding
Beginning Balance	2,302	2,392	2,382	2,267
Granted		24	67	125
Exercised	(4)			(5)
Expired or forfeited	(19)	(114)	(11)	(5)
Ending Balance	2,279	2,302	2,438	2,382
Vested & expected to Vest	2,235
Weighted Average Exercise Price per Share
Beginning Balance	$ 1.68		$ 1.69	$ 1.75
Granted		$ 0.48	$ 0.62	$ 0.63
Exercised	$ 0.44		$ 0.00	$ 0.44
Expired or forfeited	$ 1.80	$ 1.03	$ 2.26	$ 0.44
Ending Balance	$ 1.68	$ 1.68	$ 1.66	$ 1.69
Vested & expected to Vest	$ 1.70
Number of Shares Exercisable
Number of Shares Exercisable	2,117	2,099	2,058	2,023	2,142	1,994
Weighted Average Exercise Price per Share
Weighted Average Exercise Price per Share	$ 1.75	$ 1.76	$ 1.83	$ 1.86	$ 1.76	$ 1.88

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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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 vested portions of options outstanding and currently exercisable under the stock option plan.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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

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