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OTHER LONG-TERM ASSETS
 12 Months Ended
Sep. 30, 2018
OTHER LONG-TERM ASSETS [Abstract]  
OTHER LONG-TERM ASSETS
7. OTHER LONG-TERM ASSETS

Other long-term assets consisted of the following:

 
 
September 30,
 
 
 
2018
  
2017
 
Auction rate securities (ARS)
 
$
-
  
$
5,319
 
Long-term contract asset
  
1,548
   
2,115
 
Other long-term assets
  
1,979
   
2,154
 
Other long-term investments
  
1,137
   
929
 
Total
 
$
4,664
  
$
10,517
 

During the fiscal year we redeemed our ARS investments which consisted of two tax exempt municipal debt securities, both of which had maturities of greater than ten years.

Other long-term assets are primarily comprised of long-term miscellaneous deposits and prepayments on contracts extending beyond the next 12 months.  As discussed in Note 3, we recorded a long-term asset and a corresponding long-term liability of $1,137 representing the fair value of our SERP investments as of September 30, 2018.