Stock-Based Compensation - PSUs (Details) - Performance Stock Units - USD ($) $ / shares in Units, $ in Millions	9 Months Ended	12 Months Ended
	Dec. 25, 2016	Mar. 27, 2016
PSU Activity
Unvested shares available for issue under outstanding PSUs, beginning of period (in shares)	138,925
Granted (in shares)	207,000
Vested (in shares)	(26,736)
Forfeited/cancelled (in shares)	(123,654)
Unvested shares available for issue under outstanding PSUs, end of period (in shares)	195,535	138,925
Unvested PSUs, Weighted-Average Fair Value at Grant Date
Unvested shares available for issue under outstanding PSUs, beginning of period (in dollars per share)	$ 21.46
Granted (in dollars per share)	10.77
Vested (in dollars per share)	19.40
Forfeited/cancelled (in dollars per share)	21.72
Unvested shares available for issue under outstanding PSUs, end of period (in dollars per share)	$ 11.16	$ 21.46
Additional stock based compensation information
Shares earned, but not yet vested (in shares)	8,535
Measurement period	1 year	1 year
Canceled shares, employee departures (in shares)	20,000
Unvested shares not-yet-earned (in shares)	187,000
Unrecognized compensation costs (in dollars)	$ 2.0