Other Accrued Liabilities (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016		Mar. 31, 2015
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 4,179	[1]	$ 7,651
Additions that reduce net sales	2,160		6,519
Deductions from reserves	(4,154)		(8,229)
Balance at end of period	$ 2,185	[1]	$ 5,941

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