Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2016		Dec. 31, 2015		Jun. 30, 2015	Dec. 31, 2014
Other Liabilities Disclosure [Abstract]
Accrued warranty, current, see Note 1	$ 163		$ 330
Accrued taxes, net	1,806		1,135
Accrued sales returns	1,973	[1]	4,179	[1]	$ 4,359	$ 7,651
Other accrued liabilities	4,339		2,921
Total other accrued liabilities	$ 8,281		$ 8,565

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