Subsequent Events (Details) (Dassault Systems Americas Corp., Subsequent Event, USD $)	0 Months Ended
Jan. 30, 2014
Dassault Systems Americas Corp. \| Subsequent Event
Subsequent Event [Line Items]
Tender offer of common stock per share	$ 12.50
Termination fee	$ 25,000,000

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

No definition available.

Name:	us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant