Earning Per Share-Diluted (detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Diluted
Earnings (Loss) Attributable to Common Stock	$ (576)	$ 6,387	$ (684)	$ 7,685
Dividends Convertible Preferred Stock Cash	5	5	10	10
Net Income (Loss) Available to Common Stockholders, Diluted	$ (571)	$ 6,392	$ (674)	$ 7,695
Weighted Average Number of Shares Outstanding, Basic	10,774	10,748	10,787	10,750
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	4	4	4	4
Incremental Common Shares Attributable to Conversion of Preferred Stock	67	67	67	67
Weighted Average Number of Shares Outstanding, Diluted	10,845	10,819	10,858	10,821
Diluted Earnings (Loss) per Common Share	$ (0.05)	$ 0.59	$ (0.06)	$ 0.71