Discontinued Operations (Details) (USD $)	3 Months Ended	12 Months Ended						3 Months Ended	12 Months Ended
	Apr. 26, 2014	Apr. 26, 2014	Apr. 27, 2013	Apr. 28, 2012	Apr. 26, 2014 Bauhaus U.S.A. [Member]	Apr. 27, 2013 Bauhaus U.S.A. [Member]	Apr. 28, 2012 Bauhaus U.S.A. [Member]	Jul. 26, 2014 Bauhaus U.S.A. [Member] Subsequent Event [Member]	Apr. 26, 2014 Lea Industries [Member]	Apr. 27, 2013 Lea Industries [Member]	Apr. 28, 2012 Lea Industries [Member]
Results of the discontinued operations [Abstract]
Net sales					$ 33,608,000	$ 37,282,000	$ 37,043,000		$ 16,979,000	$ 21,366,000	$ 27,928,000
Income (loss) from discontinued operations					(1,560,000)	1,088,000	791,000		(4,472,000)	(1,063,000)	7,116,000
Income tax benefit / (expense)					541,000	(412,000)	(303,000)		1,695,000	404,000	(2,698,000)
Income (loss) from discontinued operations, net of tax		(3,796,000)	17,000	4,906,000	(1,019,000)	676,000	488,000		(2,777,000)	(659,000)	4,418,000
Impairment of asset to be disposed of					1,149,000
Restructuring cost	4,800,000	8,071,000	2,600,000						3,300,000
Assets and Liabilities of discontinued operations [Abstract]
Receivables, net					3,780,000				1,190,000
Inventories, net					4,231,000				3,013,000
Other current assets					85,000				87,000
Property, plant, and equipment, net					518,000
Total assets					8,614,000				4,290,000
Accounts payable					1,290,000				234,000
Accrued expenses and other current liabilities					633,000				576,000
Other long-term liabilities									22,000
Total liabilities					1,923,000				832,000
Working capital adjustment								$ 200,000