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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 28, 2013
Income Taxes [Line Items]
Increase in gross unrecognized tax benefits	$ 1.0
Reasonably possible decrease in unrecognized tax benefits in the next twelve months	$ 1.0
Scenario, Forecast [Member]
Income Taxes [Line Items]
Estimated annual effective income tax benefit rate	75.00%

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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