Subsequent Event (Details) (Subsequent event, Tempur-Pedic International Inc., USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended
	Sep. 30, 2012	Sep. 26, 2012
Merger Agreement
Per share value to be paid in cash by acquirer (in dollars per share)		2.20
Break-up fee the acquirer is entitled to if agreement is terminated by either party to the merger		25.0
Reverse break-up fee to be paid by the acquirer to the Company, first option		90.0
Reverse break-up fee to be paid by the acquirer to the Company, second option		40.0
Convertible notes
Merger Agreement
Repurchase price as a percentage of principal amount that the Company will be required to repurchase following completion of the Merger		100.00%
Trading period in which holders of the Convertible Notes are entitled following the completion of the Marger to convert the Convertible Notes into the Merger Consideration at a more favorable "make whole" conversion rate	35 days
Senior and Subordinated Notes
Merger Agreement
Repurchase price as a percentage of principal amount that the Company will be required to repurchase following completion of the Merger		101.00%