Inventories (Details) (USD $)	Jan. 03, 2015	Dec. 28, 2013
Inventory Disclosure [Abstract]
Raw materials	$ 10,220,000	$ 7,118,000
Work in progress	411,000us-gaap_InventoryWorkInProcess	505,000us-gaap_InventoryWorkInProcess
Finished goods	42,904,000	32,529,000
Inventories	53,535,000us-gaap_InventoryNet	40,152,000us-gaap_InventoryNet
Components of finished goods inventory [Abstract]
Finished beds included in finished goods inventory	20,400,000	13,400,000
Finished components included in finished goods inventory	14,700,000	11,300,000
Retail accessories included in finished goods inventory	$ 7,800,000	$ 7,800,000

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Carrying amount as of the balance sheet date of merchandise included in finished goods inventory, for finished and retail display beds.

+ References

No definition available.

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- Definition

Carrying amount as of the balance sheet date of merchandise ready for assembly that are included in the finished goods inventory as finished components.

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of merchandise, goods and components held by the company that are readily available for sale.

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of retail accessories included in finished goods inventory.

+ References

No definition available.

+ Details

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 1

-Subparagraph (b)

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- Definition

Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(4),(5))

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- Definition

Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(3))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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