Leases and Deferred Rent (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended								12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Office Building Salt Lake City, Utah sqft	Dec. 31, 2012 Office Building Hod Hasharon sqft	Dec. 31, 2012 Warehouse Salt Lake City, Utah sqft	Jan. 31, 2012 Warehouse Salt Lake City, Utah sqft	Dec. 31, 2012 Warehouse Hong Kong sqft	Dec. 31, 2012 Warehouse Austin, Texas sqft	Dec. 31, 2012 Warehouse ISRAEL facilities	Dec. 31, 2012 Warehouse ISRAEL Minimum	Dec. 31, 2012 Warehouse ISRAEL Maximum	Dec. 31, 2012 Warehouse Tzur Yigal sqft
Operating Leased Asset
Rent expense	$ 973	$ 762
Area leased (sqft)			31,000	4,700	40,000	24,000	5,600	11,100				1,000
Number of facilities leased									2
Term of lease commitment										2 years	6 years
Future minimum lease payments
2013	942
2014	909
2015	939
2016	575
2017	254
Thereafter	170
Total minimum lease payments	$ 3,789