Annual report pursuant to Section 13 and 15(d)

Debt and Capital Lease Obligations - Capital Lease (Details)

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Debt and Capital Lease Obligations - Capital Lease (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Capital Leased Assets [Line Items]      
Gain on termination of lease   $ 679  
Capital Leases, Future Minimum Payments Due [Abstract]      
2012 585    
2013 286    
2014 55    
Total 926    
Less amounts representing interest 41    
Present value of net minimum lease payments (including current portion of $552) 885    
Interest Paid 563 718 749
Interest Costs, Capitalized During Period 0 0 110
Equipment [Member]
     
Capital Lease Obligations [Abstract]      
Equipment 1,402 2,071  
Accumulated amortization (1,078) (1,401)  
Capital leases, net $ 324 $ 670  
Rickenbacker Capital Lease [Member]
     
Capital Leased Assets [Line Items]      
Initial term of capital lease (in years) 10    
Capital lease, number of renewal options 2    
Capital lease, years In renewal option 5