Restructuring (narrative) (detail) (USD $)	3 Months Ended	9 Months Ended
Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Dec. 29, 2012	Dec. 28, 2013	Dec. 29, 2012
Restructuring Charges [Abstract]
Plant Restructuring	$ 0	$ 347,000	$ 154,000	$ 2,510,000	$ 501,000	$ 2,510,000
Restructuring Equipment Cost		$ 341,000

The charge against earnings in the period, comprised of costs associated with restructuring activities not otherwise specified in the taxonomy pursuant to a duly authorized plan, excluding a discontinued operation as defined by generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, but excludes costs associated with the retirement of a long-lived asset and severance costs associated with established compensation plans.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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