Share Based Compensation (Narrative) (Details) - USD ($)	12 Months Ended
Mar. 28, 2020	Mar. 30, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 3,813,000	$ 4,022,000	$ 2,858,000
Tax benefit from compensation expense	900,000	$ 1,000,000.0	$ 1,000,000.0
Unrecognized compensation expense related to non-vested fixed stock options	$ 5,000,000.0
Compensation expenses recognition period related to nonvested fixed stock options	2 years
Weighted average fair value of options granted	$ 18.92	$ 15.44	$ 8.84
Total shares exercisable	471,192	405,245	495,573
Weighted average exercise price, exercisable	$ 55.52
Options granted	129,886	123,627	546,080
Weighted average contractual term, options outstanding	3 years 4 months 24 days	3 years 10 months 24 days
Weighted average contractual term of all options exercisable	2 years 9 months 18 days	3 years 2 months 12 days
Aggregate intrinsic value, options outstanding	$ 0	$ 26,600,000
Aggregate intrinsic value of all options exercisable	0	12,200,000
Fair value of awards vested under the Company's stock plans	$ 2,000,000.0	$ 2,800,000	$ 1,400,000
Aggregate intrinsic value, Company's closing stock price	$ 40.01	$ 86.52	$ 53.60
Aggregate intrinsic value of options exercised	$ 2,900,000	$ 7,400,000	$ 2,800,000
Cash received from stock option exercises	6,171,000	14,640,000	4,816,000
Tax benefit from option exercises	$ 400,000	$ 1,000,000.0	$ 500,000
Closing stock price	$ 40.01	$ 86.52
Aggregate intrinsic value	$ 2,200,000	$ 5,000,000.0
Market Condition Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted	0	0	100,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of employee options	4 years
Employee options term	6 years
Stock Options [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of employee options	3 years
Stock Options [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of employee options	4 years
Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of employee options	3 years
Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of employee options	4 years
Incentive Stock Option Plan 2007 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares initially reserved for future issuance	873,000
Common shares authorized for issuance	5,001,620
Options available for grant	929,360
Senior Management [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of employee options	3 years

Closing stock price on last trading day.

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Common Stock Shares Initially Reserved For Future Issuance

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The number of years that an award under the equity-based compensation plan would be outstanding.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Amount of tax benefit from exercise of option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Amount of noncash expense for share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of shares authorized for issuance under share-based payment arrangement.

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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 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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Price of a single share of a number of saleable stocks of a company.

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Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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