Earning Per Share-Diluted (detail) (USD $)	3 Months Ended		9 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 27, 2014	Dec. 28, 2013
Diluted
Earnings (Loss) Attributable to Common Stock	$ 7,711,000	$ 6,622,000	$ 6,995,000	$ 14,307,000
Dividends Convertible Preferred Stock Cash	5,000	5,000	15,000	15,000
Net Income (Loss) Available to Common Stockholders, Diluted	$ 7,716,000	$ 6,627,000	$ 7,010,000	$ 14,322,000
Weighted Average Number of Shares Outstanding, Basic	10,733,000	10,743,000	10,769,000	10,748,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	4,000	5,000	4,000	5,000
Incremental Common Shares Attributable to Conversion of Preferred Stock	67,000	67,000	67,000	67,000
Weighted Average Number of Shares Outstanding, Diluted	10,804,000	10,815,000	10,840,000	10,820,000
Diluted Earnings (Loss) per Common Share	$ 0.71	$ 0.61	$ 0.65	$ 1.32