Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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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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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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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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No definition available.

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

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Number of shares related to Restricted Stock Award forfeited during the period.

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Share Based Awards Share Based Awards - Restricted (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Dec. 29, 2016	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures		1,146,500
Allocated Share-based Compensation Expense		$ 7,598	$ 3,295	$ 3,472
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted	123,082
Restricted Stock Units Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense		$ 3,691	$ 940	$ 877
Restricted Stock Units Award [Member] \| Two Thousand Fifteen Stock Options Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares Outstanding Beginning Balance		191,247	78,205
Granted		909,456	165,634
Vested		(92,543)	(51,092)
Number of Shares Outstanding Ending Balance		902,948	191,247	78,205
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant-Date Fair Value per Share, Beginning of Period (in dollars per share)		$ 14.44	$ 17.94
Weighted Average Grant-Date Fair Value per Share, Granted (in dollars per share)		12.93	14.06
Weighted Average Grant-Date Fair Value per Share, Vested (in dollars per share)		15.25	20.14
Weighted Average Grant-Date Fair Value per Share, End of Period (in dollars per share)		$ 12.92	$ 14.44	$ 17.94
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited		(105,212)	(1,500)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value		$ 13.00	$ 17.95
Restricted Stock Units Award [Member] \| Two Thousand Five Stock Options Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares Outstanding Beginning Balance				64,571.00
Granted				48,414.00
Vested				(34,780)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant-Date Fair Value per Share, Beginning of Period (in dollars per share)				$ 20.74
Weighted Average Grant-Date Fair Value per Share, Granted (in dollars per share)				15.77
Weighted Average Grant-Date Fair Value per Share, Vested (in dollars per share)				$ 21.33
Award Grant Date Twenty-Nine December Two Thousand Sixteen [Member] \| Two Thousand Fifteen Stock Options Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures		118,999