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Note B - Inventories (Tables)

9 Months Ended

Sep. 30, 2012

Schedule of Inventory, Current [Table Text Block]

(Thousands of dollars)	September 30, 2012		December  31,     2011
Raw materials and in-process	$23,363		$30,480
Finished parts	45,046		36,451
Finished products	13,381		6,262
Total inventories	$81,790		$73,193

X

- Definition

Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 2

-Paragraph 6

-Subparagraph a,b,c

-Article 5

+ Details

Name:	us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration