Commitments (Details)		1 Months Ended				1 Months Ended			1 Months Ended
	Sep. 30, 2012 USD ($)	Jan. 31, 2011 Non-cancelable operating lease agreement in September 2005 USD ($)	Nov. 30, 2010 Non-cancelable operating lease agreement in September 2005	Sep. 30, 2012 Non-cancelable operating lease agreement in September 2005 USD ($)	Sep. 30, 2005 Non-cancelable operating lease agreement in September 2005 USD ($) sqft	Nov. 30, 2010 Non-cancelable operating lease agreement in January 2007	Sep. 30, 2012 Non-cancelable operating lease agreement in January 2007 USD ($)	Jan. 31, 2007 Non-cancelable operating lease agreement in January 2007 USD ($) sqft	Oct. 31, 2009 Non-cancelable operating lease agreement in October 2009 USD ($) sqft	Sep. 30, 2012 Non-cancelable operating lease agreement in October 2009 USD ($)	Sep. 30, 2012 Non-cancelable operating lease agreement in May 2010 CHF	May 30, 2010 Non-cancelable operating lease agreement in May 2010 Swiss subsidiary sqft
Non-cancelable operating leases
Area covered under non-cancelable operating lease agreement (in square feet)					48,000			48,000	30,500			2,500
Period of time for which entity has an option to extend lease term			5 years			5 years			5 years
Lease incentive obligations					$ 834,000			$ 283,000	$ 307,000
Cash security deposit				317,000			151,000			183,000	100,800
Letter of credit released which was previously held as security under original lease		500,000
Non-cancelable commitments under operating leases
2012 (remainder of year)	716,000
2013	2,930,000
2014	3,013,000
2015	3,030,000
2016	3,070,000
2017 and thereafter	5,229,000
Total minimum payments	$ 17,988,000