Commitments and Contingencies (Tables)

9 Months Ended

Sep. 28, 2013

Commitments and Contingencies Disclosure [Abstract]

Sales Returns

The activity in the sales returns liability account was as follows (in thousands):

	Nine Months Ended
	September 28, 2013			September 29, 2012
Balance at beginning of year	$	5,330		$	4,402
Additions that reduce net sales	33,260			33,082
Deductions from reserves	(28,816		)	(32,231		)
Acquired sales return reserve	98			—
Balance at end of period(1)	$	9,872		$	5,253

⁽¹⁾ The year-over-year increase in the sales returns liability is primarily due to an increase in our 30-night trial policy to 100 nights.

Warranty Liabilities

The activity in the accrued warranty liabilities account was as follows (in thousands): 

	Nine Months Ended
	September 28, 2013			September 29, 2012
Balance at beginning of year	$	4,858		$	6,310
Additions charged to costs and expenses for current-year sales	3,206			3,023
Deductions from reserves	(4,428		)	(3,785		)
Changes in liability for pre-existing warranties during the current year, including expirations	3			(484		)
Acquired warranty reserve	532			—
Balance at end of period	$	4,171		$	5,064