Earnings (loss) Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Earnings Per Share [Abstract]
Net income (loss)	$ 3,203	$ 5,585	$ 7,146	$ 12,490
Weighted-average common shares outstanding (basic)	15,480,000	15,955,000	15,483,000	15,994,000
Effect of dilutive securities from equity awards (shares)	36,000	81,000	63,000	91,000
Weighted-average common shares outstanding (diluted)	15,516,000	16,036,000	15,546,000	16,085,000
Basic earnings (loss) per common share (in US$ per share)	$ 0.21	$ 0.35	$ 0.46	$ 0.78
Diluted earnings (loss) per common share (in US$ per share)	$ 0.21	$ 0.35	$ 0.46	$ 0.78
Non-dilutive equity awards excluded from computation of weighted-average common shares outstanding (shares)	2,014,132	2,156,490	1,931,703	2,326,449