Schedule Of Long-Lived Asset By Geographic Areas (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 22,384	$ 29,694
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	9,832	12,453
CANADA
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	3,586	4,375
EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	468	657
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	6,562	10,786
APAC Excluding China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,936	$ 1,423