Warranty (Tables)

6 Months Ended

Oct. 30, 2011

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

Changes in the Company's warranty liability during the following period were as follows (in thousands):

	Six Months Ended
	October 30, 2011
Beginning balance at April 30, 2011	$	4,469
Additions during the period based on product sold	1,452
Additions during the period due to acquisition of controlling interest in subsidiary	313
Change in estimates	(557		)
Settlements and expirations	(2,238		)
Ending balance at October 30, 2011	$	3,439