Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Accounting Policy (Narrative) (Details)

v2.4.0.6
Basis of Presentation and Accounting Policy (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
Dec. 31, 2011
Nature of Operations and Accounting Policies [Line Items]        
Deferred Revenue $ 12,733 $ 8,953 $ 2,964 $ 123
Aeroleo [Member]
       
Nature of Operations and Accounting Policies [Line Items]        
Deferred Revenue 10,100      
Customer [Member]
       
Nature of Operations and Accounting Policies [Line Items]        
Deferred Revenue $ 2,600