Segment, Customer Concentration and Geographical Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Company revenue in different geographic locations
Total Revenues	$ 12,032	$ 11,012	$ 10,171	$ 10,114	$ 11,239	$ 12,632	$ 16,105	$ 17,791	$ 43,329	$ 57,767	$ 130,501
Americas [Member]
Company revenue in different geographic locations
Revenues from external customers attributed to the entity's country of domicile.									37,724	51,784	121,495
EMEA [Member]
Company revenue in different geographic locations
Revenues from external customers attributed to all foreign countries									2,734	3,171	7,117
Asia Pacific [Member]
Company revenue in different geographic locations
Revenues from external customers attributed to all foreign countries									$ 2,871	$ 2,812	$ 1,889