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Note B - Inventories (Detail)	Sep. 30, 2012	Dec. 31, 2011
Percentage of LIFO Inventory	79.00%	82.00%

X

- Definition

The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

+ References

No definition available.

+ Details

Name:	us-gaap_PercentageOfLIFOInventory
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant