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Commitments and Contingencies (Details) (USD $)
 6 Months Ended 1 Months Ended 1 Months Ended 1 Months Ended 1 Months Ended
Jun. 30, 2012
Vasakronan Fastigheter AB, Linnegatan 89 [Member]
Jun. 30, 2012
Vasakronan Fastigheter AB, Linnegatan 89 [Member]
Month [Member]
Jun. 30, 2012
Vasakronan Fastigheter AB, Linnegatan 89 [Member]
Annual [Member]
Jun. 30, 2012
Vasakronan Fastigheter AB, Linnegatan 89D [Member]
Jun. 30, 2012
Vasakronan Fastigheter AB, Linnegatan 89D [Member]
Month [Member]
Jun. 30, 2012
Vasakronan Fastigheter AB, Linnegatan 89D [Member]
Annual [Member]
Mar. 31, 2011
CA-Santa Clara Office Center Limited Partnership [Member]
Mar. 18, 2011
CA-Santa Clara Office Center Limited Partnership [Member]
Mar. 31, 2011
CA-Santa Clara Office Center Limited Partnership [Member]
Month [Member]
Mar. 31, 2012
2350 Mission Investors LLC [Member]
Mar. 22, 2012
2350 Mission Investors LLC [Member]
Mar. 31, 2012
2350 Mission Investors LLC [Member]
Month [Member]
Mar. 31, 2012
2350 Mission Investors LLC [Member]
Annual [Member]
Apr. 30, 2012
Picnic [Member]
Jun. 30, 2012
Picnic [Member]
Apr. 30, 2012
Picnic [Member]
Month [Member]
Apr. 30, 2012
Picnic [Member]
Annual [Member]
Commitments and Contingencies (Textual)                                  
Area of leased space (in square feet) 2,207     2,723       1,718     3,185       2,853    
Initial lease payment                       $ 7,000          
Lease payment including property tax (excluding VAT)   $ 6,000 $ 72,000   $ 8,000 $ 93,000     $ 2,647     $ 7,700 $ 84,000     $ 13,000 $ 161,000
Operating lease period 3 months     9 months     12 months     3 years              
Lease extended period if not terminated       3 years                          
Lease expiration date       Dec. 31, 2014     Apr. 30, 2012             Apr. 15, 2013