Inventories (Details) (USD $)	Dec. 29, 2012	Dec. 31, 2011
Inventory Disclosure [Abstract]
Raw materials	$ 5,089,000	$ 4,834,000
Work in progress	236,000	96,000
Finished goods	30,239,000	19,921,000
Inventories	35,564,000	24,851,000
Components of finished goods inventory [Abstract]
Finished beds included in finished goods inventory	12,600,000	6,500,000
Finished components included in finished goods inventory	10,800,000	8,600,000
Retail accessories included in finished goods inventory	$ 6,800,000	$ 4,800,000