Other Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011	Dec. 31, 2011	Dec. 13, 2011
Other Accrued Liabilities [Abstract]
Accrued warranty, current	$ 1,229		$ 346		$ 1,157
Accrued taxes, including liability for unrecognized tax benefit, see Note 11	4,028				5,101
Accrued sales return	7,219	[1]	6,944		6,143	[1]
Other accrued liabilities	2,554				2,588
Total other accrued liabilities	15,030			15,110	14,989
Balance at beginning of year			3,406		6,143	[1]
Additions that reduce net sales	29,063		14,843
Deductions from reserves	(27,987)		(11,305)
Balance at end of period	$ 7,219	[1]	$ 6,944		$ 6,143	[1]

[1] The activity in the sales returns liability account was as follows: Balance at beginning of year $6,143 and $3,406 for nine months ended September 30, 2012 and 2011, respectively. Additions that reduce net sales $29,063 and $14,843 for nine months ended September 30, 2012 and 2011, respectively. Deductions from reserves $27,987 and $11,305 for nine months ended September 30, 2012 and 2011, respectively. Balance at end of period $7,219 and $6,944 for nine months ended September 30, 2012 and 2011, respectively. All values are in thousands.