XML 29 R19.htm IDEA: XBRL DOCUMENT v2.4.0.6
Inventories (Details Textual) (USD $)
 9 Months Ended
Jun. 30, 2012
Three to Four Years Old Inventory [Member]
  
Inventories (Textual) [Abstract]  
Cost basis reduction in inventory, percentage 50.00%
Three to Four Years Old Inventory [Member] | Maximum [Member]
  
Inventories (Textual) [Abstract]  
Inventory, time period on the shelf, years 4
Three to Four Years Old Inventory [Member] | Minimum [Member]
  
Inventories (Textual) [Abstract]  
Inventory, time period on the shelf, years 3
Four to Five Years Old Inventory [Member]
  
Inventories (Textual) [Abstract]  
Cost basis reduction in inventory, percentage 75.00%
Four to Five Years Old Inventory [Member] | Maximum [Member]
  
Inventories (Textual) [Abstract]  
Inventory, time period on the shelf, years 5
Four to Five Years Old Inventory [Member] | Minimum [Member]
  
Inventories (Textual) [Abstract]  
Inventory, time period on the shelf, years 4
Greater Than Five Years Old Inventory [Member]
  
Inventories (Textual) [Abstract]  
Inventory valuation estimate 0
Greater Than Five Years Old Inventory [Member] | Minimum [Member]
  
Inventories (Textual) [Abstract]  
Inventory, time period on the shelf, years 5