$ 57,701,000

$ 38,772,000

$ 46,263,000

$ 48,994,000

$ 48,832,000

$ 36,986,000

$ 41,836,000

$ 49,920,000

$ 191,730,000

$ 177,574,000

Net sales

$ 19,657,000

Customer concentration risk percentage description

During fiscal 2014, net sales of homes and recreational vehicles to Sun Home Services, Inc. totaled approximately $19,657,000 or 10 percent of total net sales. No other individual customer in fiscal 2014 and 2013 had net sales greater than 10 percent of net total sales.

Customer Concentration - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended
	May 31, 2014	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	May 31, 2013	Feb. 28, 2013	Nov. 30, 2012	Aug. 31, 2012	May 31, 2014	May 31, 2013
Revenue, Major Customer [Line Items]
Net sales	$ 57,701,000	$ 38,772,000	$ 46,263,000	$ 48,994,000	$ 48,832,000	$ 36,986,000	$ 41,836,000	$ 49,920,000	$ 191,730,000	$ 177,574,000
Net sale Percentage									100.00%	100.00%
Sun Home Services, Inc [Member]
Revenue, Major Customer [Line Items]
Net sales									$ 19,657,000
Net sale Percentage									10.00%
Customer concentration risk percentage description									During fiscal 2014, net sales of homes and recreational vehicles to Sun Home Services, Inc. totaled approximately $19,657,000 or 10 percent of total net sales. No other individual customer in fiscal 2014 and 2013 had net sales greater than 10 percent of net total sales.