Allowance for Credit Losses (Tables)
 9 Months Ended
Sep. 30, 2012
Allowance for Credit Losses

The Company’s allowance for credit losses are as follows (in thousands):

       
  Accounts Receivable Allowance
for Doubtful Accounts		   Valuation Adjustments on Financing Receivables   Total Allowance for Credit Losses
     Finance
Leases		   Operating Leases   Finance
Leases
Balance December 31, 2010   $          —     $          8     $        —     $          8  
Provision     —       14       —       14  
Balance December 31, 2011     —       22       —       22  
Reversal of provision     —       (22 )      —       (22 ) 
Balance September 30, 2012   $ —     $ —     $ —     $ —  
Allowance for Credit Losses of Financing Receivables and its Recorded Investment

As of September 30, 2012 and December 31, 2011, the Company’s allowance for credit losses (related solely to financing receivables) and its recorded investment in financing receivables were as follows (in thousands):

   
September 30, 2012   Finance Leases   Total
Allowance for credit losses:
                  
Ending balance   $        —     $        —  
Ending balance: individually evaluated for impairment   $ —     $ —  
Ending balance: collectively evaluated for impairment   $ —     $ —  
Ending balance: loans acquired with deteriorated credit quality   $ —     $ —  
Financing receivables:
                  
Ending balance   $ 130     $ 130  
Ending balance: individually evaluated for impairment   $ 130     $ 130  
Ending balance: collectively evaluated for impairment   $ —     $ —  
Ending balance: loans acquired with deteriorated credit quality   $ —     $ —  

   
December 31, 2011   Finance Leases   Total
Allowance for credit losses:
                  
Ending balance   $        —     $        —  
Ending balance: individually evaluated for impairment   $ —     $ —  
Ending balance: collectively evaluated for impairment   $ —     $ —  
Ending balance: loans acquired with deteriorated credit quality   $ —     $ —  
Financing receivables:
                  
Ending balance   $ 256     $ 256  
Ending balance: individually evaluated for impairment   $ 256     $ 256  
Ending balance: collectively evaluated for impairment   $ —     $ —  
Ending balance: loans acquired with deteriorated credit quality   $ —     $ —  
Financing Receivables By Credit Quality Indicator and Class of Financing Receivables

At September 30, 2012 and December 31, 2011, the Company’s financing receivables by credit quality indicator and by class of financing receivables are as follows (in thousands):

   
  Finance Leases
     September 30, 2012   December 31, 2011
Pass   $           130     $           256  
Special mention     —       —  
Substandard     —       —  
Doubtful     —       —  
Total   $ 130     $ 256  
Net Investment in Financing Receivables by Age

At September 30, 2012 and December 31, 2011, investment in financing receivables is aged as follows (in thousands):

             
September 30, 2012   30 - 59 Days Past Due   60 - 89 Days Past Due   Greater Than 90 Days   Total Past Due   Current   Total
Financing Receivables		   Recorded Investment
> 90 Days and Accruing
Finance leases   $       47     $       —     $       —     $       47     $       83     $      130     $         —  

             
December 31, 2011   30 - 59 Days Past Due   60 - 89 Days Past Due   Greater Than 90 Days   Total Past Due   Current   Total
Financing Receivables		   Recorded Investment
> 90 Days and Accruing
Finance leases   $      84     $       —     $       —     $       84     $      172     $      256     $         —