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Maintenance and Accrued Costs (Tables)
6 Months Ended
Jun. 30, 2012
Maintenance and Accrued Costs [Abstract]  
Summary of the company's maintenance reserves and accruals
The accompanying balance sheets reflect refundable maintenance payments billed to lessees based on usage and accrued maintenance costs for off-lease aircraft and lessee maintenance claims for non-refundable maintenance reserves as liabilities.  At June 30, 2012 and December 31, 2011, the Company's maintenance reserves and accruals consisted of the following:

   
June 30,
2012
  
December 31,
2011
 
        
Refundable maintenance reserves
 $6,265,600  $4,801,300 
Accrued maintenance costs
  1,616,000   1,013,400 
   $7,881,600  $5,814,700 

Additions to and deductions from the company's accrued maintenance cost for aircraft maintenance
Additions to and deductions from the Company's accrued maintenance costs during the six months ended June 30, 2012 and 2011 for aircraft maintenance were as follows:

   
For Six Months Ended
June 30,
 
   
2012
  
2011
 
        
Balance, beginning of period
 $1,013,400  $2,446,800 
          
Additions:
        
Charged to expense
  2,378,500   7,909,000 
       Reversals of previously accrued maintenance costs
  (11,400)  (401,300)
       Total maintenance expense
  2,367,100   7,507,700 
       Capital equipment
  64,800   242,600 
       Accrued claims related to refundable maintenance reserves
  578,100   81,200 
       Prepaid maintenance
  32,900   201,100 
Total additions
  3,042,900   8,032,600 
          
Deductions:
        
      Payments
  1,960,500   6,915,500 
      Other
  479,800   607,000 
Total deductions
  2,440,300   7,522,500 
          
Net increase in accrued maintenance costs
  602,600   510,100 
          
Balance, end of period
 $1,616,000  $2,956,900