Other Accrued Liabilities (Details 1) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016		Jun. 30, 2015
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 4,179	[1]	$ 7,651
Additions that reduce net sales	4,976		10,510
Deductions from reserves	(7,182)		(13,802)
Balance at end of period	$ 1,973	[1]	$ 4,359

[1] The activity in the accrued sales returns liability account was as follows: